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  • Jetty 7 + MySQL Config [java.lang.ClassNotFoundException: org.mortbay.jetty.webapp.WebAppContext]

    - by Scott Chang
    I've been trying to get a c3p0 db connection pool configured for Jetty, but I keep getting a ClassNotFoundException: 2010-03-14 19:32:12.028:WARN::Failed startup of context WebAppContext@fccada@fccada/phpMyAdmin,file:/usr/local/jetty/webapps/phpMyAdmin/,file:/usr/local/jetty/webapps/phpMyAdmin/ java.lang.ClassNotFoundException: org.mortbay.jetty.webapp.WebAppContext at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at java.lang.ClassLoader.loadClass(ClassLoader.java:252) at org.eclipse.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:313) at org.eclipse.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:266) at org.eclipse.jetty.util.Loader.loadClass(Loader.java:90) at org.eclipse.jetty.xml.XmlConfiguration.nodeClass(XmlConfiguration.java:224) at org.eclipse.jetty.xml.XmlConfiguration.configure(XmlConfiguration.java:187) at org.eclipse.jetty.webapp.JettyWebXmlConfiguration.configure(JettyWebXmlConfiguration.java:77) at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:975) at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:586) at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:349) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:55) at org.eclipse.jetty.server.handler.HandlerCollection.doStart(HandlerCollection.java:165) at org.eclipse.jetty.server.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:162) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:55) at org.eclipse.jetty.server.handler.HandlerCollection.doStart(HandlerCollection.java:165) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:55) at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(HandlerWrapper.java:92) at org.eclipse.jetty.server.Server.doStart(Server.java:228) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:55) at org.eclipse.jetty.xml.XmlConfiguration$1.run(XmlConfiguration.java:990) at java.security.AccessController.doPrivileged(Native Method) at org.eclipse.jetty.xml.XmlConfiguration.main(XmlConfiguration.java:955) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.eclipse.jetty.start.Main.invokeMain(Main.java:394) at org.eclipse.jetty.start.Main.start(Main.java:546) at org.eclipse.jetty.start.Main.parseCommandLine(Main.java:208) at org.eclipse.jetty.start.Main.main(Main.java:75) I'm new to Jetty and I want to ultimately get phpMyAdmin and WordPress to run on it through Quercus and a JDBC connection. Here are my web.xml and jetty-web.xml files in my WEB-INF directory. jetty-web.xml: <?xml version="1.0"?> <!DOCTYPE Configure PUBLIC "-//Mort Bay Consulting//DTD Configure//EN" "http://jetty.mortbay.org/configure.dtd"> <Configure class="org.mortbay.jetty.webapp.WebAppContext"> <New id="mysql" class="org.mortbay.jetty.plus.naming.Resource"> <Arg>jdbc/mysql</Arg> <Arg> <New class="com.mchange.v2.c3p0.ComboPooledDataSource"> <Set name="Url">jdbc:mysql://localhost:3306/mysql</Set> <Set name="User">user</Set> <Set name="Password">pw</Set> </New> </Arg> </New> </Configure> web.xml: <?xml version="1.0"?> <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN" "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd"> <web-app> <description>Caucho Technology's PHP Implementation</description> <resource-ref> <description>My DataSource Reference</description> <res-ref-name>jdbc/mysql</res-ref-name> <res-type>javax.sql.DataSource</res-type> <res-auth>Container</res-auth> </resource-ref> <servlet> <servlet-name>Quercus Servlet</servlet-name> <servlet-class>com.caucho.quercus.servlet.QuercusServlet</servlet-class> <!-- Specifies the encoding Quercus should use to read in PHP scripts. --> <init-param> <param-name>script-encoding</param-name> <param-value>UTF-8</param-value> </init-param> <!-- Tells Quercus to use the following JDBC database and to ignore the arguments of mysql_connect(). --> <init-param> <param-name>database</param-name> <param-value>jdbc/mysql</param-value> </init-param> <init-param> <param-name>ini-file</param-name> <param-value>WEB-INF/php.ini</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>Quercus Servlet</servlet-name> <url-pattern>*.php</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>index.php</welcome-file> </welcome-file-list> </web-app> I'm guessing that I'm missing a few jars or something. Currently I have placed the following jars in my WEB-INF/lib directory: c3p0-0.9.1.2.jar commons-dbcp-1.4.jar commons-pool-1.5.4.jar mysql-connector-java-5.1.12-bin.jar I have also tried to put these jars in JETTY-HOME/lib/ext, but to no avail... Someone please tell me what is wrong with my configuration. I'm sick of digging through Jetty's crappy documentation.

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  • Android exception i don't understand after loading webpage in a webview

    - by DixieFlatline
    I have a webview that loads a webpage. I also have a reload button. Sometimes it works but sometimes it crashes when i hit reload and i get this exceptions: 05-14 10:08:33.958: ERROR/WindowManager(918): Activity com.poslji.gor.Uvod has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@435da698 that was originally added here 05-14 10:08:33.958: ERROR/WindowManager(918): android.view.WindowLeaked: Activity com.poslji.gor.Uvod has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@435da698 that was originally added here 05-14 10:08:33.958: ERROR/WindowManager(918): at android.view.ViewRoot.(ViewRoot.java:217) 05-14 10:08:33.958: ERROR/WindowManager(918): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:148) 05-14 10:08:33.958: ERROR/WindowManager(918): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91) 05-14 10:08:33.958: ERROR/WindowManager(918): at android.view.Window$LocalWindowManager.addView(Window.java:392) 05-14 10:08:33.958: ERROR/WindowManager(918): at android.app.Dialog.show(Dialog.java:231) 05-14 10:08:33.958: ERROR/WindowManager(918): at android.app.ProgressDialog.show(ProgressDialog.java:107) 05-14 10:08:33.958: ERROR/WindowManager(918): at android.app.ProgressDialog.show(ProgressDialog.java:90) 05-14 10:08:33.958: ERROR/WindowManager(918): at com.poslji.gor.Odgovori$2.onClick(Odgovori.java:120) 05-14 10:08:33.958: ERROR/WindowManager(918): at android.view.View.performClick(View.java:2179) 05-14 10:08:33.958: ERROR/WindowManager(918): at android.view.View.onTouchEvent(View.java:3828) 05-14 10:08:33.958: ERROR/WindowManager(918): at android.widget.TextView.onTouchEvent(TextView.java:6307) 05-14 10:08:33.958: ERROR/WindowManager(918): at android.view.View.dispatchTouchEvent(View.java:3368) 05-14 10:08:33.958: ERROR/WindowManager(918): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:903) 05-14 10:08:33.958: ERROR/WindowManager(918): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:903) 05-14 10:08:33.958: ERROR/WindowManager(918): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:903) 05-14 10:08:33.958: ERROR/WindowManager(918): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1752) 05-14 10:08:33.958: ERROR/WindowManager(918): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1206) 05-14 10:08:33.958: ERROR/WindowManager(918): at android.app.Activity.dispatchTouchEvent(Activity.java:1997) 05-14 10:08:33.958: ERROR/WindowManager(918): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1736) 05-14 10:08:33.958: ERROR/WindowManager(918): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:903) 05-14 10:08:33.958: ERROR/WindowManager(918): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:903) 05-14 10:08:33.958: ERROR/WindowManager(918): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:903) 05-14 10:08:33.958: ERROR/WindowManager(918): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:903) 05-14 10:08:33.958: ERROR/WindowManager(918): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:903) 05-14 10:08:33.958: ERROR/WindowManager(918): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1752) 05-14 10:08:33.958: ERROR/WindowManager(918): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1206) 05-14 10:08:33.958: ERROR/WindowManager(918): at android.app.Activity.dispatchTouchEvent(Activity.java:1997) 05-14 10:08:33.958: ERROR/WindowManager(918): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1736) 05-14 10:08:33.958: ERROR/WindowManager(918): at android.view.ViewRoot.handleMessage(ViewRoot.java:1761) 05-14 10:08:33.958: ERROR/WindowManager(918): at android.os.Handler.dispatchMessage(Handler.java:99) 05-14 10:08:33.958: ERROR/WindowManager(918): at android.os.Looper.loop(Looper.java:123) 05-14 10:08:33.958: ERROR/WindowManager(918): at android.app.ActivityThread.main(ActivityThread.java:3948) 05-14 10:08:33.958: ERROR/WindowManager(918): at java.lang.reflect.Method.invokeNative(Native Method) 05-14 10:08:33.958: ERROR/WindowManager(918): at java.lang.reflect.Method.invoke(Method.java:521) 05-14 10:08:33.958: ERROR/WindowManager(918): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:782) 05-14 10:08:33.958: ERROR/WindowManager(918): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540) 05-14 10:08:33.958: ERROR/WindowManager(918): at dalvik.system.NativeStart.main(Native Method) 05-14 10:08:36.768: ERROR/AndroidRuntime(918): Uncaught handler: thread main exiting due to uncaught exception 05-14 10:08:36.778: ERROR/AndroidRuntime(918): java.lang.IllegalArgumentException: View not attached to window manager 05-14 10:08:36.778: ERROR/AndroidRuntime(918): at android.view.WindowManagerImpl.findViewLocked(WindowManagerImpl.java:356) 05-14 10:08:36.778: ERROR/AndroidRuntime(918): at android.view.WindowManagerImpl.removeView(WindowManagerImpl.java:201) 05-14 10:08:36.778: ERROR/AndroidRuntime(918): at android.view.Window$LocalWindowManager.removeView(Window.java:400) 05-14 10:08:36.778: ERROR/AndroidRuntime(918): at android.app.Dialog.dismissDialog(Dialog.java:268) 05-14 10:08:36.778: ERROR/AndroidRuntime(918): at android.app.Dialog.access$000(Dialog.java:69) 05-14 10:08:36.778: ERROR/AndroidRuntime(918): at android.app.Dialog$1.run(Dialog.java:103) 05-14 10:08:36.778: ERROR/AndroidRuntime(918): at android.app.Dialog.dismiss(Dialog.java:252) 05-14 10:08:36.778: ERROR/AndroidRuntime(918): at com.poslji.gor.Odgovori$HelloWebViewClient.onPageFinished(Odgovori.java:180) 05-14 10:08:36.778: ERROR/AndroidRuntime(918): at android.webkit.CallbackProxy.handleMessage(CallbackProxy.java:225) 05-14 10:08:36.778: ERROR/AndroidRuntime(918): at android.os.Handler.dispatchMessage(Handler.java:99) 05-14 10:08:36.778: ERROR/AndroidRuntime(918): at android.os.Looper.loop(Looper.java:123) 05-14 10:08:36.778: ERROR/AndroidRuntime(918): at android.app.ActivityThread.main(ActivityThread.java:3948) 05-14 10:08:36.778: ERROR/AndroidRuntime(918): at java.lang.reflect.Method.invokeNative(Native Method) 05-14 10:08:36.778: ERROR/AndroidRuntime(918): at java.lang.reflect.Method.invoke(Method.java:521) 05-14 10:08:36.778: ERROR/AndroidRuntime(918): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:782) 05-14 10:08:36.778: ERROR/AndroidRuntime(918): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540) 05-14 10:08:36.778: ERROR/AndroidRuntime(918): at dalvik.system.NativeStart.main(Native Method) What is going wrong here?

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  • Create PDF document using iTextSharp in ASP.Net 4.0 and MemoryMappedFile

    - by sreejukg
    In this article I am going to demonstrate how ASP.Net developers can programmatically create PDF documents using iTextSharp. iTextSharp is a software component, that allows developers to programmatically create or manipulate PDF documents. Also this article discusses the process of creating in-memory file, read/write data from/to the in-memory file utilizing the new feature MemoryMappedFile. I have a database of users, where I need to send a notice to all my users as a PDF document. The sending mail part of it is not covered in this article. The PDF document will contain the company letter head, to make it more official. I have a list of users stored in a database table named “tblusers”. For each user I need to send customized message addressed to them personally. The database structure for the users is give below. id Title Full Name 1 Mr. Sreeju Nair K. G. 2 Dr. Alberto Mathews 3 Prof. Venketachalam Now I am going to generate the pdf document that contains some message to the user, in the following format. Dear <Title> <FullName>, The message for the user. Regards, Administrator Also I have an image, bg.jpg that contains the background for the document generated. I have created .Net 4.0 empty web application project named “iTextSharpSample”. First thing I need to do is to download the iTextSharp dll from the source forge. You can find the url for the download here. http://sourceforge.net/projects/itextsharp/files/ I have extracted the Zip file and added the itextsharp.dll as a reference to my project. Also I have added a web form named default.aspx to my project. After doing all this, the solution explorer have the following view. In the default.aspx page, I inserted one grid view and associated it with a SQL Data source control that bind data from tblusers. I have added a button column in the grid view with text “generate pdf”. The output of the page in the browser is as follows. Now I am going to create a pdf document when the user clicking on the Generate PDF button. As I mentioned before, I am going to work with the file in memory, I am not going to create a file in the disk. I added an event handler for button by specifying onrowcommand event handler. My gridview source looks like <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataSourceID="SqlDataSource1" Width="481px" CellPadding="4" ForeColor="#333333" GridLines="None" onrowcommand="Generate_PDF" > ………………………………………………………………………….. ………………………………………………………………………….. </asp:GridView> In the code behind, I wrote the corresponding event handler. protected void Generate_PDF(object sender, GridViewCommandEventArgs e) { // The button click event handler code. // I am going to explain the code for this section in the remaining part of the article } The Generate_PDF method is straight forward, It get the title, fullname and message to some variables, then create the pdf using these variables. The code for getting data from the grid view is as follows // get the row index stored in the CommandArgument property int index = Convert.ToInt32(e.CommandArgument); // get the GridViewRow where the command is raised GridViewRow selectedRow = ((GridView)e.CommandSource).Rows[index]; string title = selectedRow.Cells[1].Text; string fullname = selectedRow.Cells[2].Text; string msg = @"There are some changes in the company policy, due to this matter you need to submit your latest address to us. Please update your contact details / personnal details by visiting the member area of the website. ................................... "; since I don’t want to save the file in the disk, I am going the new feature introduced in .Net framework 4, called Memory-Mapped Files. Using Memory-Mapped mapped file, you can created non-persisted memory mapped files, that are not associated with a file in a disk. So I am going to create a temporary file in memory, add the pdf content to it, then write it to the output stream. To read more about MemoryMappedFile, read this msdn article http://msdn.microsoft.com/en-us/library/dd997372.aspx The below portion of the code using MemoryMappedFile object to create a test pdf document in memory and perform read/write operation on file. The CreateViewStream() object will give you a stream that can be used to read or write data to/from file. The code is very straight forward and I included comment so that you can understand the code. using (MemoryMappedFile mmf = MemoryMappedFile.CreateNew("test1.pdf", 1000000)) { // Create a new pdf document object using the constructor. The parameters passed are document size, left margin, right margin, top margin and bottom margin. iTextSharp.text.Document d = new iTextSharp.text.Document(PageSize.A4, 72,72,172,72); //get an instance of the memory mapped file to stream object so that user can write to this using (MemoryMappedViewStream stream = mmf.CreateViewStream()) { // associate the document to the stream. PdfWriter.GetInstance(d, stream); /* add an image as bg*/ iTextSharp.text.Image jpg = iTextSharp.text.Image.GetInstance(Server.MapPath("Image/bg.png")); jpg.Alignment = iTextSharp.text.Image.UNDERLYING; jpg.SetAbsolutePosition(0, 0); //this is the size of my background letter head image. the size is in points. this will fit to A4 size document. jpg.ScaleToFit(595, 842); d.Open(); d.Add(jpg); d.Add(new Paragraph(String.Format("Dear {0} {1},", title, fullname))); d.Add(new Paragraph("\n")); d.Add(new Paragraph(msg)); d.Add(new Paragraph("\n")); d.Add(new Paragraph(String.Format("Administrator"))); d.Close(); } //read the file data byte[] b; using (MemoryMappedViewStream stream = mmf.CreateViewStream()) { BinaryReader rdr = new BinaryReader(stream); b = new byte[mmf.CreateViewStream().Length]; rdr.Read(b, 0, (int)mmf.CreateViewStream().Length); } Response.Clear(); Response.ContentType = "Application/pdf"; Response.BinaryWrite(b); Response.End(); } Press ctrl + f5 to run the application. First I got the user list. Click on the generate pdf icon. The created looks as follows. Summary: Creating pdf document using iTextSharp is easy. You will get lot of information while surfing the www. Some useful resources and references are mentioned below http://itextsharp.com/ http://www.mikesdotnetting.com/Article/82/iTextSharp-Adding-Text-with-Chunks-Phrases-and-Paragraphs http://somewebguy.wordpress.com/2009/05/08/itextsharp-simplify-your-html-to-pdf-creation/ Hope you enjoyed the article.

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  • Error loading Mongrel in Aptana Ruby Application on Vista

    - by floatingfrisbee
    I'm brand new at Ruby. Trying to set up the first application/project using Aptana Studio. Here are my ruby and gem versions c:\>ruby -v ruby 1.9.1p378 (2010-01-10 revision 26273) [i386-mingw32] c:\>gem -v 1.3.6 I am seeing this error below while starting my ruby application. I'm developing on Vista (sucks, I know but am working on changing that) C:/Ruby/lib/ruby/gems/1.9.1/gems/activesupport-2.3.4/lib/active_support/dependencies.rb:156:in `require': 126: The specified module could not be found. - C:/Ruby/lib/ruby/gems/1.9.1/gems/mongrel-1.1.5-x86-mingw32/lib/http11.so (LoadError) from C:/Ruby/lib/ruby/gems/1.9.1/gems/activesupport-2.3.4/lib/active_support/dependencies.rb:156:in `block in require' from C:/Ruby/lib/ruby/gems/1.9.1/gems/activesupport-2.3.4/lib/active_support/dependencies.rb:521:in `new_constants_in' from C:/Ruby/lib/ruby/gems/1.9.1/gems/activesupport-2.3.4/lib/active_support/dependencies.rb:156:in `require' from C:/Ruby/lib/ruby/gems/1.9.1/gems/mongrel-1.1.5-x86-mingw32/lib/mongrel.rb:12:in `<top (required)>' from C:/Ruby/lib/ruby/gems/1.9.1/gems/activesupport-2.3.4/lib/active_support/dependencies.rb:156:in `require' from C:/Ruby/lib/ruby/gems/1.9.1/gems/activesupport-2.3.4/lib/active_support/dependencies.rb:156:in `block in require' from C:/Ruby/lib/ruby/gems/1.9.1/gems/activesupport-2.3.4/lib/active_support/dependencies.rb:521:in `new_constants_in' from C:/Ruby/lib/ruby/gems/1.9.1/gems/activesupport-2.3.4/lib/active_support/dependencies.rb:156:in `require' from C:/Ruby/lib/ruby/gems/1.9.1/gems/rack-1.0.0/lib/rack/handler/mongrel.rb:1:in `<top (required)>' from C:/Ruby/lib/ruby/gems/1.9.1/gems/rack-1.0.0/lib/rack/handler.rb:17:in `const_get' from C:/Ruby/lib/ruby/gems/1.9.1/gems/rack-1.0.0/lib/rack/handler.rb:17:in `block in get' from C:/Ruby/lib/ruby/gems/1.9.1/gems/rack-1.0.0/lib/rack/handler.rb:17:in `each' from C:/Ruby/lib/ruby/gems/1.9.1/gems/rack-1.0.0/lib/rack/handler.rb:17:in `get' from C:/Ruby/lib/ruby/gems/1.9.1/gems/rails-2.3.4/lib/commands/server.rb:45:in `<top (required)>' from C:/Users/Me - Admin/My Documents/Aptana RadRails Workspace/EventBuzz/script/server:3:in `require' from C:/Users/Me - Admin/My Documents/Aptana RadRails Workspace/EventBuzz/script/server:3:in `<top (required)>' from -e:2:in `load' from -e:2:in `<main>' As a part of fixing this issue, I've installed the following gems and updates c:\>gem update --system Updating RubyGems Nothing to update c:\>gem install rails capistrano mongrel mongrel_cluster Successfully installed rails-2.3.5 Successfully installed net-ssh-2.0.21 Successfully installed net-sftp-2.0.4 Successfully installed net-scp-1.0.2 Successfully installed net-ssh-gateway-1.0.1 Successfully installed highline-1.5.2 Successfully installed capistrano-2.5.18 Successfully installed mongrel-1.1.5-x86-mingw32 Successfully installed mongrel_cluster-1.0.5 9 gems installed Installing ri documentation for rails-2.3.5... Installing ri documentation for net-ssh-2.0.21... Installing ri documentation for net-sftp-2.0.4... Installing ri documentation for net-scp-1.0.2... Installing ri documentation for net-ssh-gateway-1.0.1... Installing ri documentation for highline-1.5.2... Installing ri documentation for capistrano-2.5.18... Installing ri documentation for mongrel-1.1.5-x86-mingw32... Installing ri documentation for mongrel_cluster-1.0.5... Updating class cache with 1380 classes... Installing RDoc documentation for rails-2.3.5... Installing RDoc documentation for net-ssh-2.0.21... Installing RDoc documentation for net-sftp-2.0.4... Installing RDoc documentation for net-scp-1.0.2... Installing RDoc documentation for net-ssh-gateway-1.0.1... Installing RDoc documentation for highline-1.5.2... Installing RDoc documentation for capistrano-2.5.18... Installing RDoc documentation for mongrel-1.1.5-x86-mingw32... Installing RDoc documentation for mongrel_cluster-1.0.5... c:\>gem install mysql Successfully installed mysql-2.8.1-x86-mingw32 1 gem installed Installing ri documentation for mysql-2.8.1-x86-mingw32... Updating class cache with 1641 classes... Installing RDoc documentation for mysql-2.8.1-x86-mingw32... Ideas as to what is going on?

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  • RequestValidation Changes in ASP.NET 4.0

    - by Rick Strahl
    There’s been a change in the way the ValidateRequest attribute on WebForms works in ASP.NET 4.0. I noticed this today while updating a post on my WebLog all of which contain raw HTML and so all pretty much trigger request validation. I recently upgraded this app from ASP.NET 2.0 to 4.0 and it’s now failing to update posts. At first this was difficult to track down because of custom error handling in my app – the custom error handler traps the exception and logs it with only basic error information so the full detail of the error was initially hidden. After some more experimentation in development mode the error that occurs is the typical ASP.NET validate request error (‘A potentially dangerous Request.Form value was detetected…’) which looks like this in ASP.NET 4.0: At first when I got this I was real perplexed as I didn’t read the entire error message and because my page does have: <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="NewEntry.aspx.cs" Inherits="Westwind.WebLog.NewEntry" MasterPageFile="~/App_Templates/Standard/AdminMaster.master" ValidateRequest="false" EnableEventValidation="false" EnableViewState="false" %> WTF? ValidateRequest would seem like it should be enough, but alas in ASP.NET 4.0 apparently that setting alone is no longer enough. Reading the fine print in the error explains that you need to explicitly set the requestValidationMode for the application back to V2.0 in web.config: <httpRuntime executionTimeout="300" requestValidationMode="2.0" /> Kudos for the ASP.NET team for putting up a nice error message that tells me how to fix this problem, but excuse me why the heck would you change this behavior to require an explicit override to an optional and by default disabled page level switch? You’ve just made a relatively simple fix to a solution a nasty morass of hard to discover configuration settings??? The original way this worked was perfectly discoverable via attributes in the page. Now you can set this setting in the page and get completely unexpected behavior and you are required to set what effectively amounts to a backwards compatibility flag in the configuration file. It turns out the real reason for the .config flag is that the request validation behavior has moved from WebForms pipeline down into the entire ASP.NET/IIS request pipeline and is now applied against all requests. Here’s what the breaking changes page from Microsoft says about it: The request validation feature in ASP.NET provides a certain level of default protection against cross-site scripting (XSS) attacks. In previous versions of ASP.NET, request validation was enabled by default. However, it applied only to ASP.NET pages (.aspx files and their class files) and only when those pages were executing. In ASP.NET 4, by default, request validation is enabled for all requests, because it is enabled before the BeginRequest phase of an HTTP request. As a result, request validation applies to requests for all ASP.NET resources, not just .aspx page requests. This includes requests such as Web service calls and custom HTTP handlers. Request validation is also active when custom HTTP modules are reading the contents of an HTTP request. As a result, request validation errors might now occur for requests that previously did not trigger errors. To revert to the behavior of the ASP.NET 2.0 request validation feature, add the following setting in the Web.config file: <httpRuntime requestValidationMode="2.0" /> However, we recommend that you analyze any request validation errors to determine whether existing handlers, modules, or other custom code accesses potentially unsafe HTTP inputs that could be XSS attack vectors. Ok, so ValidateRequest of the form still works as it always has but it’s actually the ASP.NET Event Pipeline, not WebForms that’s throwing the above exception as request validation is applied to every request that hits the pipeline. Creating the runtime override removes the HttpRuntime checking and restores the WebForms only behavior. That fixes my immediate problem but still leaves me wondering especially given the vague wording of the above explanation. One thing that’s missing in the description is above is one important detail: The request validation is applied only to application/x-www-form-urlencoded POST content not to all inbound POST data. When I first read this this freaked me out because it sounds like literally ANY request hitting the pipeline is affected. To make sure this is not really so I created a quick handler: public class Handler1 : IHttpHandler { public void ProcessRequest(HttpContext context) { context.Response.ContentType = "text/plain"; context.Response.Write("Hello World <hr>" + context.Request.Form.ToString()); } public bool IsReusable { get { return false; } } } and called it with Fiddler by posting some XML to the handler using a default form-urlencoded POST content type: and sure enough – hitting the handler also causes the request validation error and 500 server response. Changing the content type to text/xml effectively fixes the problem however, bypassing the request validation filter so Web Services/AJAX handlers and custom modules/handlers that implement custom protocols aren’t affected as long as they work with special input content types. It also looks that multipart encoding does not trigger event validation of the runtime either so this request also works fine: POST http://rasnote/weblog/handler1.ashx HTTP/1.1 Content-Type: multipart/form-data; boundary=------7cf2a327f01ae User-Agent: West Wind Internet Protocols 5.53 Host: rasnote Content-Length: 40 Pragma: no-cache <xml>asdasd</xml>--------7cf2a327f01ae *That* probably should trigger event validation – since it is a potential HTML form submission, but it doesn’t. New Runtime Feature, Global Scope Only? Ok, so request validation is now a runtime feature but sadly it’s a feature that’s scoped to the ASP.NET Runtime – effective scope to the entire running application/app domain. You can still manually force validation using Request.ValidateInput() which gives you the option to do this in code, but that realistically will only work with the requestValidationMode set to V2.0 as well since the 4.0 mode auto-fires before code ever gets a chance to intercept the call. Given all that, the new setting in ASP.NET 4.0 seems to limit options and makes things more difficult and less flexible. Of course Microsoft gets to say ASP.NET is more secure by default because of it but what good is that if you have to turn off this flag the very first time you need to allow one single request that bypasses request validation??? This is really shortsighted design… <sigh>© Rick Strahl, West Wind Technologies, 2005-2010Posted in ASP.NET  

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  • What is the best way to provide an AutoMappingOverride for an interface in fluentnhibernate automapp

    - by Tom
    In my quest for a version-wide database filter for an application, I have written the following code: using System; using System.Collections.Generic; using System.Linq; using System.Text; using FluentNHibernate.Automapping; using FluentNHibernate.Automapping.Alterations; using FluentNHibernate.Mapping; using MvcExtensions.Model; using NHibernate; namespace MvcExtensions.Services.Impl.FluentNHibernate { public interface IVersionAware { string Version { get; set; } } public class VersionFilter : FilterDefinition { const string FILTERNAME = "MyVersionFilter"; const string COLUMNNAME = "Version"; public VersionFilter() { this.WithName(FILTERNAME) .WithCondition("Version = :"+COLUMNNAME) .AddParameter(COLUMNNAME, NHibernateUtil.String ); } public static void EnableVersionFilter(ISession session,string version) { session.EnableFilter(FILTERNAME).SetParameter(COLUMNNAME, version); } public static void DisableVersionFilter(ISession session) { session.DisableFilter(FILTERNAME); } } public class VersionAwareOverride : IAutoMappingOverride<IVersionAware> { #region IAutoMappingOverride<IVersionAware> Members public void Override(AutoMapping<IVersionAware> mapping) { mapping.ApplyFilter<VersionFilter>(); } #endregion } } But, since overrides do not work on interfaces, I am looking for a way to implement this. Currently I'm using this (rather cumbersome) way for each class that implements the interface : public class SomeVersionedEntity : IModelId, IVersionAware { public virtual int Id { get; set; } public virtual string Version { get; set; } } public class SomeVersionedEntityOverride : IAutoMappingOverride<SomeVersionedEntity> { #region IAutoMappingOverride<SomeVersionedEntity> Members public void Override(AutoMapping<SomeVersionedEntity> mapping) { mapping.ApplyFilter<VersionFilter>(); } #endregion } I have been looking at IClassmap interfaces etc, but they do not seem to provide a way to access the ApplyFilter method, so I have not got a clue here... Since I am probably not the first one who has this problem, I am quite sure that it should be possible; I am just not quite sure how this works.. EDIT : I have gotten a bit closer to a generic solution: This is the way I tried to solve it : Using a generic class to implement alterations to classes implementing an interface : public abstract class AutomappingInterfaceAlteration<I> : IAutoMappingAlteration { public void Alter(AutoPersistenceModel model) { model.OverrideAll(map => { var recordType = map.GetType().GetGenericArguments().Single(); if (typeof(I).IsAssignableFrom(recordType)) { this.GetType().GetMethod("overrideStuff").MakeGenericMethod(recordType).Invoke(this, new object[] { model }); } }); } public void overrideStuff<T>(AutoPersistenceModel pm) where T : I { pm.Override<T>( a => Override(a)); } public abstract void Override<T>(AutoMapping<T> am) where T:I; } And a specific implementation : public class VersionAwareAlteration : AutomappingInterfaceAlteration<IVersionAware> { public override void Override<T>(AutoMapping<T> am) { am.Map(x => x.Version).Column("VersionTest"); am.ApplyFilter<VersionFilter>(); } } Unfortunately I get the following error now : [InvalidOperationException: Collection was modified; enumeration operation may not execute.] System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource) +51 System.Collections.Generic.Enumerator.MoveNextRare() +7661017 System.Collections.Generic.Enumerator.MoveNext() +61 System.Linq.WhereListIterator`1.MoveNext() +156 FluentNHibernate.Utils.CollectionExtensions.Each(IEnumerable`1 enumerable, Action`1 each) +239 FluentNHibernate.Automapping.AutoMapper.ApplyOverrides(Type classType, IList`1 mappedProperties, ClassMappingBase mapping) +345 FluentNHibernate.Automapping.AutoMapper.MergeMap(Type classType, ClassMappingBase mapping, IList`1 mappedProperties) +43 FluentNHibernate.Automapping.AutoMapper.Map(Type classType, List`1 types) +566 FluentNHibernate.Automapping.AutoPersistenceModel.AddMapping(Type type) +85 FluentNHibernate.Automapping.AutoPersistenceModel.CompileMappings() +746 EDIT 2 : I managed to get a bit further; I now invoke "Override" using reflection for each class that implements the interface : public abstract class PersistenceOverride<I> { public void DoOverrides(AutoPersistenceModel model,IEnumerable<Type> Mytypes) { foreach(var t in Mytypes.Where(x=>typeof(I).IsAssignableFrom(x))) ManualOverride(t,model); } private void ManualOverride(Type recordType,AutoPersistenceModel model) { var t_amt = typeof(AutoMapping<>).MakeGenericType(recordType); var t_act = typeof(Action<>).MakeGenericType(t_amt); var m = typeof(PersistenceOverride<I>) .GetMethod("MyOverride") .MakeGenericMethod(recordType) .Invoke(this, null); model.GetType().GetMethod("Override").MakeGenericMethod(recordType).Invoke(model, new object[] { m }); } public abstract Action<AutoMapping<T>> MyOverride<T>() where T:I; } public class VersionAwareOverride : PersistenceOverride<IVersionAware> { public override Action<AutoMapping<T>> MyOverride<T>() { return am => { am.Map(x => x.Version).Column(VersionFilter.COLUMNNAME); am.ApplyFilter<VersionFilter>(); }; } } However, for one reason or another my generated hbm files do not contain any "filter" fields.... Maybe somebody could help me a bit further now ??

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  • Gnome Do not Launching

    - by PyRulez
    When I try running gnome do, I get this. chris@Chris-Ubuntu-Laptop:~$ gnome-do pgrep: invalid user name: -u and it is not writable Trying sudo: chris@Chris-Ubuntu-Laptop:~$ sudo gnome-do [NetworkService] Could not initialize Network Manager dbus: Unable to open the session message bus. [Error 17:54:30.122] [SystemService] Could not initialize dbus: Unable to open the session message bus. (Do:2401): Wnck-CRITICAL **: wnck_set_client_type got called multiple times. (Do:2401): libdo-WARNING **: Binding '<Super>space' failed! [Error 17:54:30.649] [AbstractKeyBindingService] Key "" is already mapped. Tomboy.NotesItemSource "Tomboy Notes" encountered an error in UpdateItems: System.TypeInitializationException: An exception was thrown by the type initializer for Tomboy.TomboyDBus ---> System.Exception: Unable to open the session message bus. ---> System.ArgumentNullException: Argument cannot be null. Parameter name: address at NDesk.DBus.Bus.Open (System.String address) [0x00000] in <filename unknown>:0 at NDesk.DBus.Bus.get_Session () [0x00000] in <filename unknown>:0 --- End of inner exception stack trace --- at NDesk.DBus.Bus.get_Session () [0x00000] in <filename unknown>:0 at Tomboy.TomboyDBus..cctor () [0x00000] in <filename unknown>:0 --- End of inner exception stack trace --- at Tomboy.NotesItemSource.UpdateItems () [0x00000] in <filename unknown>:0 at Do.Universe.Safe.SafeItemSource.UpdateItems () [0x00000] in <filename unknown>:0 . Firefox.PlacesItemSource "Firefox Places" encountered an error in UpdateItems: System.InvalidCastException: Cannot cast from source type to destination type. at Mono.Data.Sqlite.SqliteDataReader.VerifyType (Int32 i, DbType typ) [0x00000] in <filename unknown>:0 at Mono.Data.Sqlite.SqliteDataReader.GetString (Int32 i) [0x00000] in <filename unknown>:0 at Firefox.PlacesItemSource+<LoadPlaceItems>c__Iterator3.MoveNext () [0x00000] in <filename unknown>:0 at System.Collections.Generic.List`1[Firefox.PlaceItem].AddEnumerable (IEnumerable`1 enumerable) [0x00000] in <filename unknown>:0 at System.Collections.Generic.List`1[Firefox.PlaceItem]..ctor (IEnumerable`1 collection) [0x00000] in <filename unknown>:0 at System.Linq.Enumerable.ToArray[PlaceItem] (IEnumerable`1 source) [0x00000] in <filename unknown>:0 at Firefox.PlacesItemSource.UpdateItems () [0x00000] in <filename unknown>:0 at Do.Universe.Safe.SafeItemSource.UpdateItems () [0x00000] in <filename unknown>:0 . Do.Universe.Linux.GNOMESpecialLocationsItemSource "GNOME Special Locations" encountered an error in UpdateItems: System.IO.FileNotFoundException: Could not find file "/root/.gtk-bookmarks". File name: '/root/.gtk-bookmarks' at System.IO.FileStream..ctor (System.String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, Boolean anonymous, FileOptions options) [0x00000] in <filename unknown>:0 at System.IO.FileStream..ctor (System.String path, FileMode mode, FileAccess access, FileShare share) [0x00000] in <filename unknown>:0 at (wrapper remoting-invoke-with-check) System.IO.FileStream:.ctor (string,System.IO.FileMode,System.IO.FileAccess,System.IO.FileShare) at System.IO.File.OpenRead (System.String path) [0x00000] in <filename unknown>:0 at System.IO.StreamReader..ctor (System.String path, System.Text.Encoding encoding, Boolean detectEncodingFromByteOrderMarks, Int32 bufferSize) [0x00000] in <filename unknown>:0 at System.IO.StreamReader..ctor (System.String path) [0x00000] in <filename unknown>:0 at (wrapper remoting-invoke-with-check) System.IO.StreamReader:.ctor (string) at Do.Universe.Linux.GNOMESpecialLocationsItemSource+<ReadBookmarkItems>c__Iterator3.MoveNext () [0x00000] in <filename unknown>:0 at Do.Universe.Linux.GNOMESpecialLocationsItemSource.UpdateItems () [0x00000] in <filename unknown>:0 at Do.Universe.Safe.SafeItemSource.UpdateItems () [0x00000] in <filename unknown>:0 . ^[^\Full thread dump: "<unnamed thread>" tid=0x0xb7570700 this=0x0x56f18 thread handle 0x403 state : not waiting owns () at (wrapper managed-to-native) Mono.Unix.Native.Syscall.read (int,intptr,ulong) <0xffffffff> at Mono.Unix.Native.Syscall.read (int,void*,ulong) <0x00023> at Mono.Unix.UnixStream.Read (byte[],int,int) <0x0008b> at NDesk.DBus.Connection.ReadMessage () <0x0003c> at NDesk.DBus.Connection.Iterate () <0x0001b> at NDesk.DBus.BusG/<Init>c__AnonStorey0.<>m__0 (intptr,NDesk.GLib.IOCondition,intptr) <0x00033> at (wrapper native-to-managed) NDesk.DBus.BusG/<Init>c__AnonStorey0.<>m__0 (intptr,NDesk.GLib.IOCondition,intptr) <0xffffffff> at (wrapper managed-to-native) Gtk.Clipboard.gtk_clipboard_wait_is_text_available (intptr) <0xffffffff> at Gtk.Clipboard.WaitIsTextAvailable () <0x00017> at Do.Universe.SelectedTextItem.UpdateSelection (object,System.EventArgs) <0x00027> at Do.Platform.AbstractApplicationService.OnSummoned () <0x00025> at Do.Platform.ApplicationService.<ApplicationService>m__31 (object,System.EventArgs) <0x00013> at Do.Core.Controller.OnSummoned () <0x00025> at Do.Core.Controller.Summon () <0x00027> at Do.Do.Main (string[]) <0x001eb> at (wrapper runtime-invoke) <Module>.runtime_invoke_void_object (object,intptr,intptr,intptr) <0xffffffff> "<unnamed thread>" tid=0x0xb2c81b40 this=0x0x194150 thread handle 0x412 state : interrupted state owns () at (wrapper managed-to-native) System.IO.InotifyWatcher.ReadFromFD (intptr,byte[],intptr) <0xffffffff> at System.IO.InotifyWatcher.Monitor () <0x0005f> at System.Threading.Thread.StartInternal () <0x00057> at (wrapper runtime-invoke) object.runtime_invoke_void__this__ (object,intptr,intptr,intptr) <0xffffffff> "Universe Update Dispatcher" tid=0x0xb29ffb40 this=0x0x569d8 thread handle 0x41b state : interrupted state owns () at (wrapper managed-to-native) System.Threading.WaitHandle.WaitOne_internal (System.Threading.WaitHandle,intptr,int,bool) <0xffffffff> at System.Threading.WaitHandle.WaitOne (System.TimeSpan,bool) <0x00133> at System.Threading.WaitHandle.WaitOne (System.TimeSpan) <0x00022> at Do.Core.UniverseManager.UniverseUpdateLoop () <0x0007a> at System.Threading.Thread.StartInternal () <0x00057> at (wrapper runtime-invoke) object.runtime_invoke_void__this__ (object,intptr,intptr,intptr) <0xffffffff> Tomboy.NotesItemSource "Tomboy Notes" encountered an error in UpdateItems: System.TypeInitializationException: An exception was thrown by the type initializer for Tomboy.TomboyDBus ---> System.Exception: Unable to open the session message bus. ---> System.ArgumentNullException: Argument cannot be null. Parameter name: address at NDesk.DBus.Bus.Open (System.String address) [0x00000] in <filename unknown>:0 at NDesk.DBus.Bus.get_Session () [0x00000] in <filename unknown>:0 --- End of inner exception stack trace --- at NDesk.DBus.Bus.get_Session () [0x00000] in <filename unknown>:0 at Tomboy.TomboyDBus..cctor () [0x00000] in <filename unknown>:0 --- End of inner exception stack trace --- at Tomboy.NotesItemSource.UpdateItems () [0x00000] in <filename unknown>:0 at Do.Universe.Safe.SafeItemSource.UpdateItems () [0x00000] in <filename unknown>:0 . Firefox.PlacesItemSource "Firefox Places" encountered an error in UpdateItems: System.InvalidCastException: Cannot cast from source type to destination type. at Mono.Data.Sqlite.SqliteDataReader.VerifyType (Int32 i, DbType typ) [0x00000] in <filename unknown>:0 at Mono.Data.Sqlite.SqliteDataReader.GetString (Int32 i) [0x00000] in <filename unknown>:0 at Firefox.PlacesItemSource+<LoadPlaceItems>c__Iterator3.MoveNext () [0x00000] in <filename unknown>:0 at System.Collections.Generic.List`1[Firefox.PlaceItem].AddEnumerable (IEnumerable`1 enumerable) [0x00000] in <filename unknown>:0 at System.Collections.Generic.List`1[Firefox.PlaceItem]..ctor (IEnumerable`1 collection) [0x00000] in <filename unknown>:0 at System.Linq.Enumerable.ToArray[PlaceItem] (IEnumerable`1 source) [0x00000] in <filename unknown>:0 at Firefox.PlacesItemSource.UpdateItems () [0x00000] in <filename unknown>:0 at Do.Universe.Safe.SafeItemSource.UpdateItems () [0x00000] in <filename unknown>:0 . Do.Universe.Linux.GNOMESpecialLocationsItemSource "GNOME Special Locations" encountered an error in UpdateItems: System.IO.FileNotFoundException: Could not find file "/root/.gtk-bookmarks". File name: '/root/.gtk-bookmarks' at System.IO.FileStream..ctor (System.String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, Boolean anonymous, FileOptions options) [0x00000] in <filename unknown>:0 at System.IO.FileStream..ctor (System.String path, FileMode mode, FileAccess access, FileShare share) [0x00000] in <filename unknown>:0 at (wrapper remoting-invoke-with-check) System.IO.FileStream:.ctor (string,System.IO.FileMode,System.IO.FileAccess,System.IO.FileShare) at System.IO.File.OpenRead (System.String path) [0x00000] in <filename unknown>:0 at System.IO.StreamReader..ctor (System.String path, System.Text.Encoding encoding, Boolean detectEncodingFromByteOrderMarks, Int32 bufferSize) [0x00000] in <filename unknown>:0 at System.IO.StreamReader..ctor (System.String path) [0x00000] in <filename unknown>:0 at (wrapper remoting-invoke-with-check) System.IO.StreamReader:.ctor (string) at Do.Universe.Linux.GNOMESpecialLocationsItemSource+<ReadBookmarkItems>c__Iterator3.MoveNext () [0x00000] in <filename unknown>:0 at Do.Universe.Linux.GNOMESpecialLocationsItemSource.UpdateItems () [0x00000] in <filename unknown>:0 at Do.Universe.Safe.SafeItemSource.UpdateItems () [0x00000] in <filename unknown>:0 . It stops when I try my key combination, ctrl-alt-. It does not pop up though.

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  • Use Autoruns to Manually Clean an Infected PC

    - by Mark Virtue
    There are many anti-malware programs out there that will clean your system of nasties, but what happens if you’re not able to use such a program?  Autoruns, from SysInternals (recently acquired by Microsoft), is indispensable when removing malware manually. There are a few reasons why you may need to remove viruses and spyware manually: Perhaps you can’t abide running resource-hungry and invasive anti-malware programs on your PC You might need to clean your mom’s computer (or someone else who doesn’t understand that a big flashing sign on a website that says “Your computer is infected with a virus – click HERE to remove it” is not a message that can necessarily be trusted) The malware is so aggressive that it resists all attempts to automatically remove it, or won’t even allow you to install anti-malware software Part of your geek credo is the belief that anti-spyware utilities are for wimps Autoruns is an invaluable addition to any geek’s software toolkit.  It allows you to track and control all programs (and program components) that start automatically with Windows (or with Internet Explorer).  Virtually all malware is designed to start automatically, so there’s a very strong chance that it can be detected and removed with the help of Autoruns. We have covered how to use Autoruns in an earlier article, which you should read if you need to first familiarize yourself with the program. Autoruns is a standalone utility that does not need to be installed on your computer.  It can be simply downloaded, unzipped and run (link below).  This makes is ideally suited for adding to your portable utility collection on your flash drive. When you start Autoruns for the first time on a computer, you are presented with the license agreement: After agreeing to the terms, the main Autoruns window opens, showing you the complete list of all software that will run when your computer starts, when you log in, or when you open Internet Explorer: To temporarily disable a program from launching, uncheck the box next to it’s entry.  Note:  This does not terminate the program if it is running at the time – it merely prevents it from starting next time.  To permanently prevent a program from launching, delete the entry altogether (use the Delete key, or right-click and choose Delete from the context-menu)).  Note:  This does not remove the program from your computer – to remove it completely you need to uninstall the program (or otherwise delete it from your hard disk). Suspicious Software It can take a fair bit of experience (read “trial and error”) to become adept at identifying what is malware and what is not.  Most of the entries presented in Autoruns are legitimate programs, even if their names are unfamiliar to you.  Here are some tips to help you differentiate the malware from the legitimate software: If an entry is digitally signed by a software publisher (i.e. there’s an entry in the Publisher column) or has a “Description”, then there’s a good chance that it’s legitimate If you recognize the software’s name, then it’s usually okay.  Note that occasionally malware will “impersonate” legitimate software, but adopting a name that’s identical or similar to software you’re familiar with (e.g. “AcrobatLauncher” or “PhotoshopBrowser”).  Also, be aware that many malware programs adopt generic or innocuous-sounding names, such as “Diskfix” or “SearchHelper” (both mentioned below). Malware entries usually appear on the Logon tab of Autoruns (but not always!) If you open up the folder that contains the EXE or DLL file (more on this below), an examine the “last modified” date, the dates are often from the last few days (assuming that your infection is fairly recent) Malware is often located in the C:\Windows folder or the C:\Windows\System32 folder Malware often only has a generic icon (to the left of the name of the entry) If in doubt, right-click the entry and select Search Online… The list below shows two suspicious looking entries:  Diskfix and SearchHelper These entries, highlighted above, are fairly typical of malware infections: They have neither descriptions nor publishers They have generic names The files are located in C:\Windows\System32 They have generic icons The filenames are random strings of characters If you look in the C:\Windows\System32 folder and locate the files, you’ll see that they are some of the most recently modified files in the folder (see below) Double-clicking on the items will take you to their corresponding registry keys: Removing the Malware Once you’ve identified the entries you believe to be suspicious, you now need to decide what you want to do with them.  Your choices include: Temporarily disable the Autorun entry Permanently delete the Autorun entry Locate the running process (using Task Manager or similar) and terminating it Delete the EXE or DLL file from your disk (or at least move it to a folder where it won’t be automatically started) or all of the above, depending upon how certain you are that the program is malware. To see if your changes succeeded, you will need to reboot your machine, and check any or all of the following: Autoruns – to see if the entry has returned Task Manager (or similar) – to see if the program was started again after the reboot Check the behavior that led you to believe that your PC was infected in the first place.  If it’s no longer happening, chances are that your PC is now clean Conclusion This solution isn’t for everyone and is most likely geared to advanced users. Usually using a quality Antivirus application does the trick, but if not Autoruns is a valuable tool in your Anti-Malware kit. Keep in mind that some malware is harder to remove than others.  Sometimes you need several iterations of the steps above, with each iteration requiring you to look more carefully at each Autorun entry.  Sometimes the instant that you remove the Autorun entry, the malware that is running replaces the entry.  When this happens, we need to become more aggressive in our assassination of the malware, including terminating programs (even legitimate programs like Explorer.exe) that are infected with malware DLLs. Shortly we will be publishing an article on how to identify, locate and terminate processes that represent legitimate programs but are running infected DLLs, in order that those DLLs can be deleted from the system. Download Autoruns from SysInternals Similar Articles Productive Geek Tips Using Autoruns Tool to Track Startup Applications and Add-onsHow To Get Detailed Information About Your PCSUPERAntiSpyware Portable is the Must-Have Spyware Removal Tool You NeedQuick Tip: Windows Vista Temp Files DirectoryClear Recent Commands From the Run Dialog in Windows XP TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 PCmover Professional 15 Great Illustrations by Chow Hon Lam Easily Sync Files & Folders with Friends & Family Amazon Free Kindle for PC Download Stretch popurls.com with a Stylish Script (Firefox) OldTvShows.org – Find episodes of Hitchcock, Soaps, Game Shows and more Download Microsoft Office Help tab

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  • C#/.NET Little Wonders: Using &lsquo;default&rsquo; to Get Default Values

    - by James Michael Hare
    Once again, in this series of posts I look at the parts of the .NET Framework that may seem trivial, but can help improve your code by making it easier to write and maintain. The index of all my past little wonders posts can be found here. Today’s little wonder is another of those small items that can help a lot in certain situations, especially when writing generics.  In particular, it is useful in determining what the default value of a given type would be. The Problem: what’s the default value for a generic type? There comes a time when you’re writing generic code where you may want to set an item of a given generic type.  Seems simple enough, right?  We’ll let’s see! Let’s say we want to query a Dictionary<TKey, TValue> for a given key and get back the value, but if the key doesn’t exist, we’d like a default value instead of throwing an exception. So, for example, we might have a the following dictionary defined: 1: var lookup = new Dictionary<int, string> 2: { 3: { 1, "Apple" }, 4: { 2, "Orange" }, 5: { 3, "Banana" }, 6: { 4, "Pear" }, 7: { 9, "Peach" } 8: }; And using those definitions, perhaps we want to do something like this: 1: // assume a default 2: string value = "Unknown"; 3:  4: // if the item exists in dictionary, get its value 5: if (lookup.ContainsKey(5)) 6: { 7: value = lookup[5]; 8: } But that’s inefficient, because then we’re double-hashing (once for ContainsKey() and once for the indexer).  Well, to avoid the double-hashing, we could use TryGetValue() instead: 1: string value; 2:  3: // if key exists, value will be put in value, if not default it 4: if (!lookup.TryGetValue(5, out value)) 5: { 6: value = "Unknown"; 7: } But the “flow” of using of TryGetValue() can get clunky at times when you just want to assign either the value or a default to a variable.  Essentially it’s 3-ish lines (depending on formatting) for 1 assignment.  So perhaps instead we’d like to write an extension method to support a cleaner interface that will return a default if the item isn’t found: 1: public static class DictionaryExtensions 2: { 3: public static TValue GetValueOrDefault<TKey, TValue>(this Dictionary<TKey, TValue> dict, 4: TKey key, TValue defaultIfNotFound) 5: { 6: TValue value; 7:  8: // value will be the result or the default for TValue 9: if (!dict.TryGetValue(key, out value)) 10: { 11: value = defaultIfNotFound; 12: } 13:  14: return value; 15: } 16: } 17:  So this creates an extension method on Dictionary<TKey, TValue> that will attempt to get a value using the given key, and will return the defaultIfNotFound as a stand-in if the key does not exist. This code compiles, fine, but what if we would like to go one step further and allow them to specify a default if not found, or accept the default for the type?  Obviously, we could overload the method to take the default or not, but that would be duplicated code and a bit heavy for just specifying a default.  It seems reasonable that we could set the not found value to be either the default for the type, or the specified value. So what if we defaulted the type to null? 1: public static TValue GetValueOrDefault<TKey, TValue>(this Dictionary<TKey, TValue> dict, 2: TKey key, TValue defaultIfNotFound = null) // ... No, this won’t work, because only reference types (and Nullable<T> wrapped types due to syntactical sugar) can be assigned to null.  So what about a calling parameterless constructor? 1: public static TValue GetValueOrDefault<TKey, TValue>(this Dictionary<TKey, TValue> dict, 2: TKey key, TValue defaultIfNotFound = new TValue()) // ... No, this won’t work either for several reasons.  First, we’d expect a reference type to return null, not an “empty” instance.  Secondly, not all reference types have a parameter-less constructor (string for example does not).  And finally, a constructor cannot be determined at compile-time, while default values can. The Solution: default(T) – returns the default value for type T Many of us know the default keyword for its uses in switch statements as the default case.  But it has another use as well: it can return us the default value for a given type.  And since it generates the same defaults that default field initialization uses, it can be determined at compile-time as well. For example: 1: var x = default(int); // x is 0 2:  3: var y = default(bool); // y is false 4:  5: var z = default(string); // z is null 6:  7: var t = default(TimeSpan); // t is a TimeSpan with Ticks == 0 8:  9: var n = default(int?); // n is a Nullable<int> with HasValue == false Notice that for numeric types the default is 0, and for reference types the default is null.  In addition, for struct types, the value is a default-constructed struct – which simply means a struct where every field has their default value (hence 0 Ticks for TimeSpan, etc.). So using this, we could modify our code to this: 1: public static class DictionaryExtensions 2: { 3: public static TValue GetValueOrDefault<TKey, TValue>(this Dictionary<TKey, TValue> dict, 4: TKey key, TValue defaultIfNotFound = default(TValue)) 5: { 6: TValue value; 7:  8: // value will be the result or the default for TValue 9: if (!dict.TryGetValue(key, out value)) 10: { 11: value = defaultIfNotFound; 12: } 13:  14: return value; 15: } 16: } Now, if defaultIfNotFound is unspecified, it will use default(TValue) which will be the default value for whatever value type the dictionary holds.  So let’s consider how we could use this: 1: lookup.GetValueOrDefault(1); // returns “Apple” 2:  3: lookup.GetValueOrDefault(5); // returns null 4:  5: lookup.GetValueOrDefault(5, “Unknown”); // returns “Unknown” 6:  Again, do not confuse a parameter-less constructor with the default value for a type.  Remember that the default value for any type is the compile-time default for any instance of that type (0 for numeric, false for bool, null for reference types, and struct will all default fields for struct).  Consider the difference: 1: // both zero 2: int i1 = default(int); 3: int i2 = new int(); 4:  5: // both “zeroed” structs 6: var dt1 = default(DateTime); 7: var dt2 = new DateTime(); 8:  9: // sb1 is null, sb2 is an “empty” string builder 10: var sb1 = default(StringBuilder()); 11: var sb2 = new StringBuilder(); So in the above code, notice that the value types all resolve the same whether using default or parameter-less construction.  This is because a value type is never null (even Nullable<T> wrapped types are never “null” in a reference sense), they will just by default contain fields with all default values. However, for reference types, the default is null and not a constructed instance.  Also it should be noted that not all classes have parameter-less constructors (string, for instance, doesn’t have one – and doesn’t need one). Summary Whenever you need to get the default value for a type, especially a generic type, consider using the default keyword.  This handy word will give you the default value for the given type at compile-time, which can then be used for initialization, optional parameters, etc. Technorati Tags: C#,CSharp,.NET,Little Wonders,default

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  • Upgrading from 12.10 to 13.04 -> dpkg: error processing sudo (--configure)

    - by Korrigan Nagirrok
    Here's the deal and reason I'm asking for your help. Last night I went on upgrading my Xubuntu 12.10 installation to 13.04, so at tty1 I run the command sudo do-release-upgrade and everything seemed to went well except that after rebooting and when I run sudo apt-get update && sudo apt-get upgrade I get this error: sudo apt-get update && sudo apt-get upgrade Hit http://pt.archive.ubuntu.com raring Release.gpg Hit http://pt.archive.ubuntu.com raring-updates Release.gpg Hit http://dl.google.com stable Release.gpg Hit http://pt.archive.ubuntu.com raring-backports Release.gpg Hit http://pt.archive.ubuntu.com raring Release Hit http://archive.canonical.com raring Release.gpg Hit http://ppa.launchpad.net raring Release.gpg Hit http://pt.archive.ubuntu.com raring-updates Release Hit http://extras.ubuntu.com raring Release.gpg Hit http://pt.archive.ubuntu.com raring-backports Release Hit http://dl.google.com stable Release Hit http://pt.archive.ubuntu.com raring/main Sources Hit http://pt.archive.ubuntu.com raring/restricted Sources Hit http://extras.ubuntu.com raring Release Hit http://archive.canonical.com raring Release Hit http://ppa.launchpad.net raring Release.gpg Hit http://pt.archive.ubuntu.com raring/universe Sources Hit http://pt.archive.ubuntu.com raring/multiverse Sources Hit http://dl.google.com stable/main i386 Packages Get:1 http://security.ubuntu.com raring-security Release.gpg [933 B] Hit http://pt.archive.ubuntu.com raring/main i386 Packages Hit http://extras.ubuntu.com raring/main Sources Hit http://ppa.launchpad.net raring Release Hit http://archive.canonical.com raring/partner i386 Packages Hit http://pt.archive.ubuntu.com raring/restricted i386 Packages Hit http://pt.archive.ubuntu.com raring/universe i386 Packages Hit http://extras.ubuntu.com raring/main i386 Packages Hit http://pt.archive.ubuntu.com raring/multiverse i386 Packages Hit http://ppa.launchpad.net raring Release Hit http://pt.archive.ubuntu.com raring/main Translation-en Hit http://ppa.launchpad.net raring/main Sources Hit http://ppa.launchpad.net raring/main i386 Packages Hit http://pt.archive.ubuntu.com raring/multiverse Translation-en Hit http://pt.archive.ubuntu.com raring/restricted Translation-en Hit http://pt.archive.ubuntu.com raring/universe Translation-en Hit http://pt.archive.ubuntu.com raring-updates/main Sources Hit http://pt.archive.ubuntu.com raring-updates/restricted Sources Hit http://ppa.launchpad.net raring/main Sources Hit http://pt.archive.ubuntu.com raring-updates/universe Sources Hit http://pt.archive.ubuntu.com raring-updates/multiverse Sources Hit http://pt.archive.ubuntu.com raring-updates/main i386 Packages Hit http://ppa.launchpad.net raring/main i386 Packages Hit http://pt.archive.ubuntu.com raring-updates/restricted i386 Packages Hit http://pt.archive.ubuntu.com raring-updates/universe i386 Packages Hit http://pt.archive.ubuntu.com raring-updates/multiverse i386 Packages Ign http://dl.google.com stable/main Translation-en_US Hit http://pt.archive.ubuntu.com raring-updates/main Translation-en Ign http://archive.canonical.com raring/partner Translation-en_US Ign http://extras.ubuntu.com raring/main Translation-en_US Ign http://dl.google.com stable/main Translation-en Ign http://archive.canonical.com raring/partner Translation-en Hit http://pt.archive.ubuntu.com raring-updates/multiverse Translation-en Ign http://extras.ubuntu.com raring/main Translation-en Hit http://pt.archive.ubuntu.com raring-updates/restricted Translation-en Hit http://pt.archive.ubuntu.com raring-updates/universe Translation-en Hit http://pt.archive.ubuntu.com raring-backports/main Sources Hit http://pt.archive.ubuntu.com raring-backports/restricted Sources Hit http://pt.archive.ubuntu.com raring-backports/universe Sources Hit http://pt.archive.ubuntu.com raring-backports/multiverse Sources Hit http://pt.archive.ubuntu.com raring-backports/main i386 Packages Hit http://pt.archive.ubuntu.com raring-backports/restricted i386 Packages Hit http://pt.archive.ubuntu.com raring-backports/universe i386 Packages Hit http://pt.archive.ubuntu.com raring-backports/multiverse i386 Packages Hit http://pt.archive.ubuntu.com raring-backports/main Translation-en Hit http://pt.archive.ubuntu.com raring-backports/multiverse Translation-en Get:2 http://security.ubuntu.com raring-security Release [40.8 kB] Hit http://pt.archive.ubuntu.com raring-backports/restricted Translation-en Hit http://pt.archive.ubuntu.com raring-backports/universe Translation-en Ign http://ppa.launchpad.net raring/main Translation-en_US Ign http://ppa.launchpad.net raring/main Translation-en Get:3 http://security.ubuntu.com raring-security/main Sources [2,109 B] Ign http://ppa.launchpad.net raring/main Translation-en_US Ign http://ppa.launchpad.net raring/main Translation-en Get:4 http://security.ubuntu.com raring-security/restricted Sources [14 B] Get:5 http://security.ubuntu.com raring-security/universe Sources [14 B] Get:6 http://security.ubuntu.com raring-security/multiverse Sources [14 B] Get:7 http://security.ubuntu.com raring-security/main i386 Packages [3,670 B] Get:8 http://security.ubuntu.com raring-security/restricted i386 Packages [14 B] Get:9 http://security.ubuntu.com raring-security/universe i386 Packages [2,824 B] Get:10 http://security.ubuntu.com raring-security/multiverse i386 Packages [14 B] Ign http://pt.archive.ubuntu.com raring/main Translation-en_US Ign http://pt.archive.ubuntu.com raring/multiverse Translation-en_US Ign http://pt.archive.ubuntu.com raring/restricted Translation-en_US Ign http://pt.archive.ubuntu.com raring/universe Translation-en_US Ign http://pt.archive.ubuntu.com raring-updates/main Translation-en_US Ign http://pt.archive.ubuntu.com raring-updates/multiverse Translation-en_US Hit http://security.ubuntu.com raring-security/main Translation-en Ign http://pt.archive.ubuntu.com raring-updates/restricted Translation-en_US Ign http://pt.archive.ubuntu.com raring-updates/universe Translation-en_US Ign http://pt.archive.ubuntu.com raring-backports/main Translation-en_US Ign http://pt.archive.ubuntu.com raring-backports/multiverse Translation-en_US Ign http://pt.archive.ubuntu.com raring-backports/restricted Translation-en_US Hit http://security.ubuntu.com raring-security/multiverse Translation-en Ign http://pt.archive.ubuntu.com raring-backports/universe Translation-en_US Hit http://security.ubuntu.com raring-security/restricted Translation-en Hit http://security.ubuntu.com raring-security/universe Translation-en Ign http://security.ubuntu.com raring-security/main Translation-en_US Ign http://security.ubuntu.com raring-security/multiverse Translation-en_US Ign http://security.ubuntu.com raring-security/restricted Translation-en_US Ign http://security.ubuntu.com raring-security/universe Translation-en_US Fetched 50.4 kB in 6s (7,454 B/s) Reading package lists... Done Reading package lists... Done Building dependency tree Reading state information... Done 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 2 not fully installed or removed. Need to get 0 B/373 kB of archives. After this operation, 0 B of additional disk space will be used. Do you want to continue [Y/n]? Y dpkg: error processing sudo (--configure): Package is in a very bad inconsistent state - you should reinstall it before attempting configuration. No apport report written because MaxReports is reached already dpkg: dependency problems prevent configuration of ubuntu-minimal: ubuntu-minimal depends on sudo; however: Package sudo is not configured yet. dpkg: error processing ubuntu-minimal (--configure): dependency problems - leaving unconfigured No apport report written because MaxReports is reached already Errors were encountered while processing: sudo ubuntu-minimal E: Sub-process /usr/bin/dpkg returned an error code (1) I've tried everything I thought logical, like sudo dpkg --configure -a dpkg: error processing sudo (--configure): Package is in a very bad inconsistent state - you should reinstall it before attempting configuration. dpkg: dependency problems prevent configuration of ubuntu-minimal: ubuntu-minimal depends on sudo; however: Package sudo is not configured yet. dpkg: error processing ubuntu-minimal (--configure): dependency problems - leaving unconfigured Errors were encountered while processing: sudo ubuntu-minimal sudo apt-get install -f Reading package lists... Done Building dependency tree Reading state information... Done 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 2 not fully installed or removed. Need to get 0 B/373 kB of archives. After this operation, 0 B of additional disk space will be used. dpkg: error processing sudo (--configure): Package is in a very bad inconsistent state - you should reinstall it before attempting configuration. dpkg: dependency problems prevent configuration of ubuntu-minimal: ubuntu-minimal depends on sudo; however: Package sudo is not configured yet. dpkg: error processing ubuntu-minimal (--configure): dependency problems - leaving unconfigured No apport report written because MaxReports is reached already No apport report written because MaxReports is reached already Errors were encountered while processing: sudo ubuntu-minimal E: Sub-process /usr/bin/dpkg returned an error code (1) Can someone help me, please. Edit: Here's some more info that could be of help for anyone. The output of apt-cache policy linux-image-generic-pae linux-generic-pae is linux-image-generic-pae: Installed: (none) Candidate: 3.8.0.19.35 Version table: 3.8.0.19.35 0 500 http://pt.archive.ubuntu.com/ubuntu/ raring/main i386 Packages linux-generic-pae: Installed: (none) Candidate: 3.8.0.19.35 Version table: 3.8.0.19.35 0 500 http://pt.archive.ubuntu.com/ubuntu/ raring/main i386 Packages

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  • removeFirst and addLast methods of LinkedList Class are Unknown

    - by user318068
    I have a problem with my code in C# . if i click in compiler button , I get the following errors 'System.Collections.Generic.LinkedList<int?>' does not contain a definition for 'removeFirst' and no extension method 'removeFirst' accepting a first argument of type 'System.Collections.Generic.LinkedList<int?>' could be found (are you missing a using directive or an assembly reference?). and 'System.Collections.Generic.LinkedList<Hanoi_tower.Sol>' does not contain a definition for 'addLast' and no extension method 'addLast' accepting a first argument of type 'System.Collections.Generic.LinkedList<Hanoi_tower.Sol>' could be found (are you missing a using directive or an assembly reference?) This is my program using System.; using System.Collections.Generic; using System.Linq; using System.Text; namespace Hanoi_tower { public class Sol { public LinkedList<int?> tower1 = new LinkedList<int?>(); public LinkedList<int?> tower2 =new LinkedList<int?>(); public LinkedList<int?> tower3 =new LinkedList<int?>(); public int depth; public LinkedList<Sol> neighbors; public Sol(LinkedList<int?> tower1, LinkedList<int?> tower2, LinkedList<int?> tower3) { this.tower1 = tower1; this.tower2 = tower2; this.tower3 = tower3; neighbors = new LinkedList<Sol>(); } public virtual void getneighbors() { Sol temp = this.copy(); Sol neighbor1 = this.copy(); Sol neighbor2 = this.copy(); Sol neighbor3 = this.copy(); Sol neighbor4 = this.copy(); Sol neighbor5 = this.copy(); Sol neighbor6 = this.copy(); if (temp.tower1.Count != 0) { if (neighbor1.tower2.Count != 0) { if (neighbor1.tower1.First.Value < neighbor1.tower2.First.Value) { neighbor1.tower2.AddFirst(neighbor1.tower1.RemoveFirst); neighbors.AddLast(neighbor1); } } else { neighbor1.tower2.AddFirst(neighbor1.tower1.RemoveFirst()); neighbors.AddLast(neighbor1); } if (neighbor2.tower3.Count != 0) { if (neighbor2.tower1.First.Value < neighbor2.tower3.First.Value) { neighbor2.tower3.AddFirst(neighbor2.tower1.RemoveFirst()); neighbors.AddLast(neighbor2); } } else { neighbor2.tower3.AddFirst(neighbor2.tower1.RemoveFirst()); neighbors.AddLast(neighbor2); } } //------------- if (temp.tower2.Count != 0) { if (neighbor3.tower1.Count != 0) { if (neighbor3.tower2.First.Value < neighbor3.tower1.First.Value) { neighbor3.tower1.AddFirst(neighbor3.tower2.RemoveFirst()); neighbors.AddLast(neighbor3); } } else { neighbor3.tower1.AddFirst(neighbor3.tower2.RemoveFirst()); neighbors.AddLast(neighbor3); } if (neighbor4.tower3.Count != 0) { if (neighbor4.tower2.First.Value < neighbor4.tower3.First.Value) { neighbor4.tower3.AddFirst(neighbor4.tower2.RemoveFirst()); neighbors.AddLast(neighbor4); } } else { neighbor4.tower3.AddFirst(neighbor4.tower2.RemoveFirst()); neighbors.AddLast(neighbor4); } } //------------------------ if (temp.tower3.Count() != 0) { if (neighbor5.tower1.Count() != 0) { if(neighbor5.tower3.ElementAtOrDefault() < neighbor5.tower1.ElementAtOrDefault()) { neighbor5.tower1.AddFirst(neighbor5.tower3.RemoveFirst()); neighbors.AddLast(neighbor5); } } else { neighbor5.tower1.AddFirst(neighbor5.tower3.RemoveFirst()); neighbors.AddLast(neighbor5); } if (neighbor6.tower2.Count() != 0) { if(neighbor6.tower3.element() < neighbor6.tower2.element()) { neighbor6.tower2.addFirst(neighbor6.tower3.removeFirst()); neighbors.addLast(neighbor6); } } else { neighbor6.tower2.addFirst(neighbor6.tower3.removeFirst()); neighbors.addLast(neighbor6); } } } public override string ToString() { string str; str="tower1"+ tower1.ToString() + " tower2" + tower2.ToString() + " tower3" + tower3.ToString(); return str; } public Sol copy() { Sol So; LinkedList<int> l1= new LinkedList<int>(); LinkedList<int> l2=new LinkedList<int>(); LinkedList<int> l3 = new LinkedList<int>(); for(int i=0;i<=this.tower1.Count() -1;i++) { l1.AddLast(tower1.get(i)); } for(int i=0;i<=this.tower2.size()-1;i++) { l2.addLast(tower2.get(i)); } for(int i=0;i<=this.tower3.size()-1;i++) { l3.addLast(tower3.get(i)); } So = new Sol(l1, l2, l3); return So; } public bool Equals(Sol sol) { if (this.tower1.Equals(sol.tower1) & this.tower2.Equals(sol.tower2) & this.tower3.Equals(sol.tower3)) return true; return false; } public virtual bool containedin(Stack<Sol> vec) { bool found =false; for(int i=0;i<= vec.Count-1;i++) { if(vec.get(i).tower1.Equals(this.tower1) && vec.get(i).tower2.Equals(this.tower2) && vec.get(i).tower3.Equals(this.tower3)) { found=true; break; } } return found; } } }

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  • Superclass Sensitive Actions

    - by Geertjan
    I've created a small piece of functionality that enables you to create actions for Java classes in the IDE. When the user right-clicks on a Java class, they will see one or more actions depending on the superclass of the selected class. To explain this visually, here I have "BlaTopComponent.java". I right-click on its node in the Projects window and I see "This is a TopComponent": Indeed, when you look at the source code of "BlaTopComponent.java", you'll see that it implements the TopComponent class. Next, in the screenshot below, you see that I have right-click a different class. In this case, there's an action available because the selected class implements the ActionListener class. Then, take a look at this one. Here both TopComponent and ActionListener are superclasses of the current class, hence both the actions are available to be invoked: Finally, here's a class that subclasses neither TopComponent nor ActionListener, hence neither of the actions that I created for doing something that relates to TopComponents or ActionListeners is available, since those actions are irrelevant in this context: How does this work? Well, it's a combination of my blog entries "Generic Node Popup Registration Solution" and "Showing an Action on a TopComponent Node". The cool part is that the definition of the two actions that you see above is remarkably trivial: import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JOptionPane; import org.openide.loaders.DataObject; import org.openide.util.Utilities; public class TopComponentSensitiveAction implements ActionListener { private final DataObject context; public TopComponentSensitiveAction() { context = Utilities.actionsGlobalContext().lookup(DataObject.class); } @Override public void actionPerformed(ActionEvent ev) { //Do something with the context: JOptionPane.showMessageDialog(null, "TopComponent: " + context.getNodeDelegate().getDisplayName()); } } The above is the action that will be available if you right-click a Java class that extends TopComponent. This, in turn, is the action that will be available if you right-click a Java class that implements ActionListener: import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JOptionPane; import org.openide.loaders.DataObject; import org.openide.util.Utilities; public class ActionListenerSensitiveAction implements ActionListener { private final DataObject context; public ActionListenerSensitiveAction() { context = Utilities.actionsGlobalContext().lookup(DataObject.class); } @Override public void actionPerformed(ActionEvent ev) { //Do something with the context: JOptionPane.showMessageDialog(null, "ActionListener: " + context.getNodeDelegate().getDisplayName()); } } Indeed, the classes, at this stage are the same. But, depending on what I want to do with TopComponents or ActionListeners, I now have a starting point, which includes access to the DataObject, from where I can get down into the source code, as shown here. This is how the two ActionListeners that you see defined above are registered in the layer, which could ultimately be done via annotations on the ActionListeners, of course: <folder name="Actions"> <folder name="Tools"> <file name="org-netbeans-sbas-impl-TopComponentSensitiveAction.instance"> <attr stringvalue="This is a TopComponent" name="displayName"/> <attr name="instanceCreate" methodvalue="org.netbeans.sbas.SuperclassSensitiveAction.create"/> <attr name="type" stringvalue="org.openide.windows.TopComponent"/> <attr name="delegate" newvalue="org.netbeans.sbas.impl.TopComponentSensitiveAction"/> </file> <file name="org-netbeans-sbas-impl-ActionListenerSensitiveAction.instance"> <attr stringvalue="This is an ActionListener" name="displayName"/> <attr name="instanceCreate" methodvalue="org.netbeans.sbas.SuperclassSensitiveAction.create"/> <attr name="type" stringvalue="java.awt.event.ActionListener"/> <attr name="delegate" newvalue="org.netbeans.sbas.impl.ActionListenerSensitiveAction"/> </file> </folder> </folder> <folder name="Loaders"> <folder name="text"> <folder name="x-java"> <folder name="Actions"> <file name="org-netbeans-sbas-impl-TopComponentSensitiveAction.shadow"> <attr name="originalFile" stringvalue="Actions/Tools/org-netbeans-sbas-impl-TopComponentSensitiveAction.instance"/> <attr intvalue="150" name="position"/> </file> <file name="org-netbeans-sbas-impl-ActionListenerSensitiveAction.shadow"> <attr name="originalFile" stringvalue="Actions/Tools/org-netbeans-sbas-impl-ActionListenerSensitiveAction.instance"/> <attr intvalue="160" name="position"/> </file> </folder> </folder> </folder> </folder> The most important parts of the layer registration are the lines that are highlighted above. Those lines connect the layer to the generic action that delegates back to the action listeners defined above, as follows: public final class SuperclassSensitiveAction extends AbstractAction implements ContextAwareAction { private final Map map; //This method is called from the layer, via "instanceCreate", //magically receiving a map, which contains all the attributes //that are defined in the layer for the file: static SuperclassSensitiveAction create(Map map) { return new SuperclassSensitiveAction(Utilities.actionsGlobalContext(), map); } public SuperclassSensitiveAction(Lookup context, Map m) { super(m.get("displayName").toString()); this.map = m; String superclass = m.get("type").toString(); //Enable the menu item only if //we're dealing with a class of type superclass: JavaSource javaSource = JavaSource.forFileObject( context.lookup(DataObject.class).getPrimaryFile()); try { javaSource.runUserActionTask(new ScanTask(this, superclass), true); } catch (IOException ex) { Exceptions.printStackTrace(ex); } //Hide the menu item if it isn't enabled: putValue(DynamicMenuContent.HIDE_WHEN_DISABLED, true); } @Override public void actionPerformed(ActionEvent ev) { ActionListener delegatedAction = (ActionListener)map.get("delegate"); delegatedAction.actionPerformed(ev); } @Override public Action createContextAwareInstance(Lookup actionContext) { return new SuperclassSensitiveAction(actionContext, map); } private class ScanTask implements Task<CompilationController> { private SuperclassSensitiveAction action = null; private String superclass; private ScanTask(SuperclassSensitiveAction action, String superclass) { this.action = action; this.superclass = superclass; } @Override public void run(final CompilationController info) throws Exception { info.toPhase(Phase.ELEMENTS_RESOLVED); new EnableIfGivenSuperclassMatches(info, action, superclass).scan( info.getCompilationUnit(), null); } } private static class EnableIfGivenSuperclassMatches extends TreePathScanner<Void, Void> { private CompilationInfo info; private final AbstractAction action; private final String superclassName; public EnableIfGivenSuperclassMatches(CompilationInfo info, AbstractAction action, String superclassName) { this.info = info; this.action = action; this.superclassName = superclassName; } @Override public Void visitClass(ClassTree t, Void v) { Element el = info.getTrees().getElement(getCurrentPath()); if (el != null) { TypeElement te = (TypeElement) el; List<? extends TypeMirror> interfaces = te.getInterfaces(); if (te.getSuperclass().toString().equals(superclassName)) { action.setEnabled(true); } else { action.setEnabled(false); } for (TypeMirror typeMirror : interfaces) { if (typeMirror.toString().equals(superclassName)){ action.setEnabled(true); } } } return null; } } } This is a pretty cool solution and, as you can see, very generic. Create a new ActionListener, register it in the layer so that it maps to the generic class above, and make sure to set the type attribute, which defines the superclass to which the action should be sensitive.

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  • Online ALTER TABLE in MySQL 5.6

    - by Marko Mäkelä
    This is the low-level view of data dictionary language (DDL) operations in the InnoDB storage engine in MySQL 5.6. John Russell gave a more high-level view in his blog post April 2012 Labs Release – Online DDL Improvements. MySQL before the InnoDB Plugin Traditionally, the MySQL storage engine interface has taken a minimalistic approach to data definition language. The only natively supported operations were CREATE TABLE, DROP TABLE and RENAME TABLE. Consider the following example: CREATE TABLE t(a INT); INSERT INTO t VALUES (1),(2),(3); CREATE INDEX a ON t(a); DROP TABLE t; The CREATE INDEX statement would be executed roughly as follows: CREATE TABLE temp(a INT, INDEX(a)); INSERT INTO temp SELECT * FROM t; RENAME TABLE t TO temp2; RENAME TABLE temp TO t; DROP TABLE temp2; You could imagine that the database could crash when copying all rows from the original table to the new one. For example, it could run out of file space. Then, on restart, InnoDB would roll back the huge INSERT transaction. To fix things a little, a hack was added to ha_innobase::write_row for committing the transaction every 10,000 rows. Still, it was frustrating that even a simple DROP INDEX would make the table unavailable for modifications for a long time. Fast Index Creation in the InnoDB Plugin of MySQL 5.1 MySQL 5.1 introduced a new interface for CREATE INDEX and DROP INDEX. The old table-copying approach can still be forced by SET old_alter_table=0. This interface is used in MySQL 5.5 and in the InnoDB Plugin for MySQL 5.1. Apart from the ability to do a quick DROP INDEX, the main advantage is that InnoDB will execute a merge-sort algorithm before inserting the index records into each index that is being created. This should speed up the insert into the secondary index B-trees and potentially result in a better B-tree fill factor. The 5.1 ALTER TABLE interface was not perfect. For example, DROP FOREIGN KEY still invoked the table copy. Renaming columns could conflict with InnoDB foreign key constraints. Combining ADD KEY and DROP KEY in ALTER TABLE was problematic and not atomic inside the storage engine. The ALTER TABLE interface in MySQL 5.6 The ALTER TABLE storage engine interface was completely rewritten in MySQL 5.6. Instead of introducing a method call for every conceivable operation, MySQL 5.6 introduced a handful of methods, and data structures that keep track of the requested changes. In MySQL 5.6, online ALTER TABLE operation can be requested by specifying LOCK=NONE. Also LOCK=SHARED and LOCK=EXCLUSIVE are available. The old-style table copying can be requested by ALGORITHM=COPY. That one will require at least LOCK=SHARED. From the InnoDB point of view, anything that is possible with LOCK=EXCLUSIVE is also possible with LOCK=SHARED. Most ALGORITHM=INPLACE operations inside InnoDB can be executed online (LOCK=NONE). InnoDB will always require an exclusive table lock in two phases of the operation. The execution phases are tied to a number of methods: handler::check_if_supported_inplace_alter Checks if the storage engine can perform all requested operations, and if so, what kind of locking is needed. handler::prepare_inplace_alter_table InnoDB uses this method to set up the data dictionary cache for upcoming CREATE INDEX operation. We need stubs for the new indexes, so that we can keep track of changes to the table during online index creation. Also, crash recovery would drop any indexes that were incomplete at the time of the crash. handler::inplace_alter_table In InnoDB, this method is used for creating secondary indexes or for rebuilding the table. This is the ‘main’ phase that can be executed online (with concurrent writes to the table). handler::commit_inplace_alter_table This is where the operation is committed or rolled back. Here, InnoDB would drop any indexes, rename any columns, drop or add foreign keys, and finalize a table rebuild or index creation. It would also discard any logs that were set up for online index creation or table rebuild. The prepare and commit phases require an exclusive lock, blocking all access to the table. If MySQL times out while upgrading the table meta-data lock for the commit phase, it will roll back the ALTER TABLE operation. In MySQL 5.6, data definition language operations are still not fully atomic, because the data dictionary is split. Part of it is inside InnoDB data dictionary tables. Part of the information is only available in the *.frm file, which is not covered by any crash recovery log. But, there is a single commit phase inside the storage engine. Online Secondary Index Creation It may occur that an index needs to be created on a new column to speed up queries. But, it may be unacceptable to block modifications on the table while creating the index. It turns out that it is conceptually not so hard to support online index creation. All we need is some more execution phases: Set up a stub for the index, for logging changes. Scan the table for index records. Sort the index records. Bulk load the index records. Apply the logged changes. Replace the stub with the actual index. Threads that modify the table will log the operations to the logs of each index that is being created. Errors, such as log overflow or uniqueness violations, will only be flagged by the ALTER TABLE thread. The log is conceptually similar to the InnoDB change buffer. The bulk load of index records will bypass record locking. We still generate redo log for writing the index pages. It would suffice to log page allocations only, and to flush the index pages from the buffer pool to the file system upon completion. Native ALTER TABLE Starting with MySQL 5.6, InnoDB supports most ALTER TABLE operations natively. The notable exceptions are changes to the column type, ADD FOREIGN KEY except when foreign_key_checks=0, and changes to tables that contain FULLTEXT indexes. The keyword ALGORITHM=INPLACE is somewhat misleading, because certain operations cannot be performed in-place. For example, changing the ROW_FORMAT of a table requires a rebuild. Online operation (LOCK=NONE) is not allowed in the following cases: when adding an AUTO_INCREMENT column, when the table contains FULLTEXT indexes or a hidden FTS_DOC_ID column, or when there are FOREIGN KEY constraints referring to the table, with ON…CASCADE or ON…SET NULL option. The FOREIGN KEY limitations are needed, because MySQL does not acquire meta-data locks on the child or parent tables when executing SQL statements. Theoretically, InnoDB could support operations like ADD COLUMN and DROP COLUMN in-place, by lazily converting the table to a newer format. This would require that the data dictionary keep multiple versions of the table definition. For simplicity, we will copy the entire table, even for DROP COLUMN. The bulk copying of the table will bypass record locking and undo logging. For facilitating online operation, a temporary log will be associated with the clustered index of table. Threads that modify the table will also write the changes to the log. When altering the table, we skip all records that have been marked for deletion. In this way, we can simply discard any undo log records that were not yet purged from the original table. Off-page columns, or BLOBs, are an important consideration. We suspend the purge of delete-marked records if it would free any off-page columns from the old table. This is because the BLOBs can be needed when applying changes from the log. We have special logging for handling the ROLLBACK of an INSERT that inserted new off-page columns. This is because the columns will be freed at rollback.

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  • Unable to create application factory of class org.apache.wicket.spring.SpringWebApplicationFactory

    - by theJava
    org.apache.wicket.protocol.http.WebApplicationFactoryCreationException: Unable to create application factory of class org.apache.wicket.spring.SpringWebApplicationFactory at org.apache.wicket.protocol.http.WicketFilter.getApplicationFactory(WicketFilter.java:228) at org.apache.wicket.protocol.http.WicketFilter.init(WicketFilter.java:271) at org.apache.wicket.protocol.http.WicketFilter.init(WicketFilter.java:252) at org.mortbay.jetty.servlet.FilterHolder.doStart(FilterHolder.java:97) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:713) at org.mortbay.jetty.servlet.Context.startContext(Context.java:140) at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1282) at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:518) at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:499) at org.mortbay.jetty.plugin.Jetty6PluginWebAppContext.doStart(Jetty6PluginWebAppContext.java:115) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152) at org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:156) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130) at org.mortbay.jetty.Server.doStart(Server.java:224) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.jetty.plugin.Jetty6PluginServer.start(Jetty6PluginServer.java:132) at org.mortbay.jetty.plugin.AbstractJettyMojo.startJetty(AbstractJettyMojo.java:454) at org.mortbay.jetty.plugin.AbstractJettyMojo.execute(AbstractJettyMojo.java:396) at org.mortbay.jetty.plugin.AbstractJettyRunMojo.execute(AbstractJettyRunMojo.java:210) at org.mortbay.jetty.plugin.Jetty6RunMojo.execute(Jetty6RunMojo.java:184) at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:107) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:195) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:148) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:140) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59) at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183) at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:314) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:151) at org.apache.maven.cli.MavenCli.execute(MavenCli.java:445) at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:168) at org.apache.maven.cli.MavenCli.main(MavenCli.java:132) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290) at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230) at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409) at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352) 2010-12-28 14:51:46.213:INFO::Started [email protected]:8080 I am using Wicket 1.5 M3, Spring 3.0 and i am getting this error. Below is my Web.xml config. <?xml version="1.0" encoding="ISO-8859-1"?> <web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" version="2.4"> <display-name>mysticpaste</display-name> <!-- There are three means to configure Wickets configuration mode and they are tested in the order given. 1) A system property: -Dwicket.configuration 2) servlet specific <init-param> 3) context specific <context-param> The value might be either "development" (reloading when templates change) or "deployment". If no configuration is found, "development" is the default. --> <filter> <filter-name>wicket.mysticpaste</filter-name> <filter-class> org.apache.wicket.protocol.http.WicketFilter </filter-class> <init-param> <param-name>applicationFactoryClassName</param-name> <param-value>org.apache.wicket.spring.SpringWebApplicationFactory</param-value> </init-param> </filter> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:com/mysticcoders/mysticpaste/spring/application-context.xml</param-value> </context-param> <listener> <listener-class> org.springframework.web.context.ContextLoaderListener </listener-class> </listener> <filter> <filter-name>wicket.session</filter-name> <filter-class>org.apache.wicket.protocol.http.servlet.WicketSessionFilter</filter-class> <init-param> <param-name>filterName</param-name> <param-value>wicket.mysticpaste</param-value> </init-param> </filter> <filter-mapping> <filter-name>wicket.session</filter-name> <url-pattern>/servlet/*</url-pattern> </filter-mapping> <filter> <filter-name>open.hibernate.session.in.view</filter-name> <filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class> </filter> <!-- Important! This filter mapping must come before Wicket's! --> <filter-mapping> <filter-name>open.hibernate.session.in.view</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app>

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  • Oracle B2B - Synchronous Request Reply

    - by cdwright
    Introduction So first off, let me say I didn't create this demo (although I did modify it some). I got it from a member of the B2B development technical staff. Since it came with only a simple readme file, I thought I would take some time and write a more detailed explanation about how it works. Beginning with Oracle SOA Suite PS5 (11.1.1.6), B2B supports synchronous request reply over http using the b2b/syncreceiver servlet. I’m attaching the demo to this blog which includes a SOA composite archive that needs to be deployed using JDeveloper, a B2B repository with two agreements that need to be deployed using the B2B console, and a test xml file that gets sent to the b2b/syncreceiver servlet using your favorite SOAP test tool (I'm using Firefox Poster here). You can download the zip file containing the demo here. The demo works by sending the sample xml request file (req.xml) to http://<b2bhost>:8001/b2b/syncreceiver using the SOAP test tool.  The syncreceiver servlet keeps the socket connection open between itself and the test tool so that it can synchronously send the reply message back. When B2B receives the inbound request message, it is passed to the SOA composite through the default B2B Fabric binding. A simple reply is created in BPEL and returned to B2B which then sends the message back to the test tool using that same socket connection. I’ll show you the B2B configuration first, then we’ll look at the soa composite. Configuring B2B No additional configuration necessary in order to use the syncreceiver servlet. It is already running when you start SOA. After importing the GC_SyncReqRep.zip repository file into B2B, you’ll have the typical GlobalChips host trading partner and the Acme remote trading partner. Document Management The repository contains two very simple custom XML document definitions called Orders and OrdersResponse. In order to determine the trading partner agreement needed to process the inbound Orders document, you need to know two things about it; what is it and where it came from. So let’s look at how B2B identifies the appropriate document definition for the message. The XSD’s for these two document definitions themselves are not particularly interesting. Whenever you're dealing with custom XML documents, B2B identifies the appropriate document definition for each XML message using an XPath Identification Expression. The expression is entered for each of these document definitions under the document administration tab in the B2B console. The full XPATH expression for the Orders document is  //*[local-name()='shiporder']/*[local-name()='shipto']/*[local-name()='name']/text(). You can see this path in the XSD diagram below and how it uniquely identifies this message. The OrdersReponse document is identified in the same way. The XPath expression for it is //*[local-name()='Response']/*[local-name()='Status']/text(). You can see how it’s path differs uniquely identifying the reply from the request. Trading Partner Profile The trading partner profiles are very simple too. For GlobalChips, a generic identifier is being used to identify the sender of the response document using the host trading partner name. For Acme, a generic identifier is also being used to identify the sender of the inbound request using the remote trading partner name. The document types are added for the remote trading partner as usual. So the remote trading partner Acme is the sender of the Orders document, and it is the receiver of the OrdersResponse document. For the remote trading partner only, there needs to be a dummy channel which gets used in the outbound response agreement. The channel is not actually used. It is just a necessary place holder that needs to be there when creating the agreement. Trading Partner Agreement The agreements are equally simple. There is no validation and translation is not an option for a custom XML document type. For the InboundAgreement (request) the document definition is set to OrdersDef. In the Agreement Parameters section the generic identifiers have been added for the host and remote trading partners. That’s all that is needed for the inbound transaction. For the OutboundAgreement (response), the document definition is set to OrdersResponseDef and the generic identifiers for the two trading partners are added. The remote trading partner dummy delivery channel is also added to the agreement. SOA Composite Import the SOA composite archive into JDeveloper as an EJB JAR file. Open the composite and you should have a project that looks like this. In the composite, open the b2bInboundSyncSvc exposed service and advance through the setup wizard. Select your Application Server Connection and advance to the Operations window. Notice here that the B2B binding is set to Receive. It is not set for Synchronous Request Reply. Continue advancing through the wizard as you normally would and select finish at the end. Now open BPELProcess1 in the composite. The BPEL process is set as a Synchronous Request Reply as you can see below. The while loop is there just to give the process something to do. The actual reply message is prepared in the assignResponseValues assignment followed by an Invoke of the B2B binding. Open the replyResponse Invoke and go to the properties tab. You’ll see that the fromTradingPartnerId, toTradingPartner, documentTypeName, and documentProtocolRevision properties have been set. Testing the Configuration To test the configuration, I used Firefox Poster. Enter the URL for the b2b/syncreceiver servlet and browse for the req.xml file that contains the test request message. In the Headers tab, add the property ‘from’ and give it the value ‘Acme’. This is how B2B will know where the message is coming from and it will use that information along with the document type name to find the right trading partner agreement. Now post the message. You should get back a response with a status of ‘200 OK’. That’s all there is to it.

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  • DevConnections Slides and Samples Posted

    - by Rick Strahl
    I’ve posted the slides and samples to my DevConnections Sessions for anyone interested. I had a lot of fun with my sessions this time around mainly because the sessions picked were a little off the beaten track (well, the handlers/modules and e-commerce sessions anyway). For those of you that attended I hope you found the sessions useful. For the rest of you – you can check out the slides and samples if you like. Here’s what was covered: Introduction to jQuery with ASP.NET This session covered mostly the client side of jQuery demonstrated on a small sample page with a variety of incrementally built up examples of selection and page manipulation. This session also introduces some of the basics of AJAX communication talking to ASP.NET. When I do this session it never turns out exactly the same way and this time around the examples were on the more basic side and purely done with hands on demonstrations rather than walk throughs of more complex examples. Alas this session always feels like it needs another half an hour to get through the full sortiment of functionality. The slides and samples cover a wider variety of topics and there are many examples that demonstrate more advanced operations like interacting with WCF REST services, using client templating and building rich client only windowed interfaces. Download Low Level ASP.NET: Handlers and Modules This session was a look at the ASP.NET pipeline and it discusses some of the ASP.NET base architecture and key components from HttpRuntime on up through the various modules and handlers that make up the ASP.NET/IIS pipeline. This session is fun as there are a number of cool examples that demonstrate the power and flexibility of ASP.NET, but some of the examples were external and interfacing with other technologies so they’re not actually included in the downloadable samples. However, there are still a few cool ones in there – there’s an image resizing handler, an image overlay module that stamps images with Sample if loaded from a certain folder, an OpenID authentication module (which failed during the demo due to the crappy internet connection at DevConnections this year :-}), Response filtering using a generic filter stream component, a generic error handler and a few others. The slides cover a lot of the ASP.NET pipeline flow and various HttpRuntime components. Download Electronic Payment Processing in ASP.NET Applications This session covered the business end and integration of electronic credit card processing and PayPal. A good part of this session deals with what’s involved in payment processing, getting signed up and who you have to deal with for your merchant account. We then took a look at integration of credit card processing via some generic components provided with the session that allow processing using a unified class interface with specific implementations for several of the most common gateway providers including Authorize.NET, PayFlowPro, LinkPoint, BluePay etc. We also briefly looked at PayPal Classic implementation which provides a quick and cheap if not quite as professional mechanism for taking payments online. The samples provide the Credit Card processing wrappers for the various gateway providers as well as a PayPal helper class to generate the PayPal redirect urls as well as helper code for dealing with IPN callbacks. Download Hope some of you will find the material useful. Enjoy.© Rick Strahl, West Wind Technologies, 2005-2010Posted in ASP.NET  

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  • Asp.NET ReportViewer “report execution has expired or cannot be found” error when using session state service or SQL Server session state

    - by dotneteer
    We encountered an error like: ReportServerException: The report execution x5pl2245iwvvq055khsxzlj5 has expired or cannot be found. (rsExecutionNotFound)]    Microsoft.Reporting.WebForms.ServerReportSoapProxy.OnSoapException(SoapException e) +72    Microsoft.Reporting.WebForms.Internal.Soap.ReportingServices2005.Execution.ProxyMethodInvocation.Execute(RSExecutionConnection connection, ProxyMethod`1 initialMethod, ProxyMethod`1 retryMethod) +428    Microsoft.Reporting.WebForms.Internal.Soap.ReportingServices2005.Execution.RSExecutionConnection.GetExecutionInfo() +133    Microsoft.Reporting.WebForms.ServerReport.EnsureExecutionSession() +197    Microsoft.Reporting.WebForms.ServerReport.LoadViewState(Object viewStateObj) +256    Microsoft.Reporting.WebForms.ServerReport..ctor(SerializationInfo info, StreamingContext context) +355 [TargetInvocationException: Exception has been thrown by the target of an invocation.]    System.RuntimeMethodHandle._SerializationInvoke(Object target, SignatureStruct&amp; declaringTypeSig, SerializationInfo info, StreamingContext context) +0    System.Reflection.RuntimeConstructorInfo.SerializationInvoke(Object target, SerializationInfo info, StreamingContext context) +108    System.Runtime.Serialization.ObjectManager.CompleteISerializableObject(Object obj, SerializationInfo info, StreamingContext context) +273    System.Runtime.Serialization.ObjectManager.FixupSpecialObject(ObjectHolder holder) +49    System.Runtime.Serialization.ObjectManager.DoFixups() +223    System.Runtime.Serialization.Formatters.Binary.ObjectReader.Deserialize(HeaderHandler handler, __BinaryParser serParser, Boolean fCheck, Boolean isCrossAppDomain, IMethodCallMessage methodCallMessage) +188    System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream serializationStream, HeaderHandler handler, Boolean fCheck, Boolean isCrossAppDomain, IMethodCallMessage methodCallMessage) +203    System.Web.Util.AltSerialization.ReadValueFromStream(BinaryReader reader) +788    System.Web.SessionState.SessionStateItemCollection.ReadValueFromStreamWithAssert() +55    System.Web.SessionState.SessionStateItemCollection.DeserializeItem(String name, Boolean check) +281    System.Web.SessionState.SessionStateItemCollection.DeserializeItem(Int32 index) +110    System.Web.SessionState.SessionStateItemCollection.get_Item(Int32 index) +17    System.Web.SessionState.HttpSessionStateContainer.get_Item(Int32 index) +13    System.Web.Util.AspCompatApplicationStep.OnPageStartSessionObjects() +71    System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2065 This error occurs long after the report viewer page has closed. It occurs to any asp.net page in the application, rendering the entire application unusable until the user gets a new session. The cause of the problem is that the ReportViewer uses session state. When a page retrieves session from any out-of-state session, the session variable of type Microsoft.Reporting.WebForms.ReportHierarchy is deserialized from the session storage. The deserialization could cause the object to connect to the report server when the report is no longer available. The solution is simple but not pretty. We need to clean up the session variable when the report viewer page is closed. One way is to add some Javascript to the page to handle the window.onunload event. In the event handler, call a web service to clean up the session variable. The name of the session variable appears to be randomly generated. So we need to loop through the session variable to find a variable of the type Microsoft.Reporting.WebForms.ReportHierarchy. Microsoft has implemented pinging between the report viewer and the report server to keep the report alive on the server when the report viewer is up; I hope they will go one step further to take care of this problem.

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  • Error Handling Examples(C#)

    “The purpose of reviewing the Error Handling code is to assure that the application fails safely under all possible error conditions, expected and unexpected. No sensitive information is presented to the user when an error occurs.” (OWASP, 2011) No Error Handling The absence of error handling is still a form of error handling. Based on the code in Figure 1, if an error occurred and was not handled within either the ReadXml or BuildRequest methods the error would bubble up to the Search method. Since this method does not handle any acceptations the error will then bubble up the stack trace. If this continues and the error is not handled within the application then the environment in which the application is running will notify the user running the application that an error occurred based on what type of application. Figure 1: No Error Handling public DataSet Search(string searchTerm, int resultCount) { DataSet dt = new DataSet(); dt.ReadXml(BuildRequest(searchTerm, resultCount)); return dt; } Generic Error Handling One simple way to add error handling is to catch all errors by default. If you examine the code in Figure 2, you will see a try-catch block. On April 6th 2010 Louis Lazaris clearly describes a Try Catch statement by defining both the Try and Catch aspects of the statement. “The try portion is where you would put any code that might throw an error. In other words, all significant code should go in the try section. The catch section will also hold code, but that section is not vital to the running of the application. So, if you removed the try-catch statement altogether, the section of code inside the try part would still be the same, but all the code inside the catch would be removed.” (Lazaris, 2010) He also states that all errors that occur in the try section cause it to stops the execution of the try section and redirects all execution to the catch section. The catch section receives an object containing information about the error that occurred so that they system can gracefully handle the error properly. When errors occur they commonly log them in some form. This form could be an email, database entry, web service call, log file, or just an error massage displayed to the user.  Depending on the error sometimes applications can recover, while others force an application to close. Figure 2: Generic Error Handling public DataSet Search(string searchTerm, int resultCount) { DataSet dt = new DataSet(); try { dt.ReadXml(BuildRequest(searchTerm, resultCount)); } catch (Exception ex) { // Handle all Exceptions } return dt; } Error Specific Error Handling Like the Generic Error Handling, Error Specific error handling allows for the catching of specific known errors that may occur. For example wrapping a try catch statement around a soap web service call would allow the application to handle any error that was generated by the soap web service. Now, if the systems wanted to send a message to the web service provider every time a soap error occurred but did not want to notify them if any other type of error occurred like a network time out issue. This would be varying tedious to accomplish using the General Error Handling methodology. This brings us to the use case for using the Error Specific error handling methodology.  The Error Specific Error handling methodology allows for the TryCatch statement to catch various types of errors depending on the type of error that occurred. In Figure 3, the code attempts to handle DataException differently compared to how it potentially handles all other errors. This allows for specific error handling for each type of known error, and still allows for error handling of any unknown error that my occur during the execution of the TryCatch statement. Figure 5: Error Specific Error Handling public DataSet Search(string searchTerm, int resultCount) { DataSet dt = new DataSet(); try { dt.ReadXml(BuildRequest(searchTerm, resultCount)); } catch (TimeoutException ex) { // Handle Timeout TimeoutException Only } catch (Exception) { // Handle all Exceptions } return dt; }

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  • Tuple in C# 4.0

    - by Jalpesh P. Vadgama
    C# 4.0 language includes a new feature called Tuple. Tuple provides us a way of grouping elements of different data type. That enables us to use it a lots places at practical world like we can store a coordinates of graphs etc. In C# 4.0 we can create Tuple with Create method. This Create method offer 8 overload like following. So you can group maximum 8 data types with a Tuple. Followings are overloads of a data type. Create(T1)- Which represents a tuple of size 1 Create(T1,T2)- Which represents a tuple of size 2 Create(T1,T2,T3) – Which represents a tuple of size 3 Create(T1,T2,T3,T4) – Which represents a tuple of size 4 Create(T1,T2,T3,T4,T5) – Which represents a tuple of size 5 Create(T1,T2,T3,T4,T5,T6) – Which represents a tuple of size 6 Create(T1,T2,T3,T4,T5,T6,T7) – Which represents a tuple of size 7 Create(T1,T2,T3,T4,T5,T6,T7,T8) – Which represents a tuple of size 8 Following are some example code for tuple. using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace TupleExample { class Program { static void Main(string[] args) { var tuple = System.Tuple.Create<string, string, string>("Jalpesh", "P", "Vadgama"); Console.WriteLine(tuple); var t = System.Tuple.Create<int, string>(1, "Jalpesh"); Console.WriteLine(t); } } } Following is a output of above as expected. You can also access values insides Tuple with ItemN property. Where N represents particular number of item in tuple. Following is an example of it. using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace TupleExample { class Program { static void Main(string[] args) { var tuple = System.Tuple.Create<string, string, string>("Jalpesh", "P", "Vadgama"); Console.WriteLine(tuple.Item1); Console.WriteLine(tuple.Item2); Console.WriteLine(tuple.Item3); } } } Here you can see I have printed items with Item1,Item2 and Item3 . Following is the output of above code.   Even we can create a nested tuple also following is code for nested tuple. using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace TupleExample { class Program { static void Main(string[] args) { var tuple = System.Tuple.Create(1,"Jalpesh",new Tuple<string,string>("P","Vadgama")); Console.WriteLine(tuple.Item1); Console.WriteLine(tuple.Item2); Console.WriteLine(tuple.Item3); } } } Following is a output above code as expected. As you can see there are unlimited possibilities we can do lots of things with Tuple. Hope you liked it. Stay tuned for more. Till then Happy Programming!!

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  • Xorg does not see my monitor EDID

    - by sean farley
    Below is the output from my Xorg.0. X.Org X Server 1.11.3 Release Date: 2011-12-16 [ 22.311] X Protocol Version 11, Revision 0 [ 22.311] Build Operating System: Linux 2.6.42-23-generic x86_64 Ubuntu [ 22.311] Current Operating System: Linux sean-P55-USB3 3.2.0-34-generic #53-Ubuntu SMP Thu Nov 15 10:48:16 UTC 2012 x86_64 [ 22.311] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.2.0-34-generic root=UUID=0a34603e-aee9-44d1-8982-a5a5a38c3e4d ro quiet splash [ 22.311] Build Date: 29 August 2012 12:12:33AM [ 22.311] xorg-server 2:1.11.4-0ubuntu10.8 (For technical support please see http://www.ubuntu.com/support) [ 22.311] Current version of pixman: 0.24.4 [ 22.311] Before reporting problems, check http://wiki.x.org to make sure that you have the latest version. [ 22.311] Markers: (--) probed, (**) from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. [ 22.311] (==) Log file: "/var/log/Xorg.0.log", Time: Sat Nov 17 13:20:45 2012 [ 22.311] (==) Using config file: "/etc/X11/xorg.conf" [ 22.311] (==) Using system config directory "/usr/share/X11/xorg.conf.d" [ 22.311] (==) No Layout section. Using the first Screen section. [ 22.311] (==) No screen section available. Using defaults. [ 22.311] (**) |-->Screen "Default Screen Section" (0) [ 22.311] (**) | |-->Monitor "<default monitor>" [ 22.311] (==) No device specified for screen "Default Screen Section". Using the first device section listed. [ 22.311] (**) | |-->Device "Default Device" [ 22.311] (==) No monitor specified for screen "Default Screen Section". Using a default monitor configuration. [ 22.311] (==) Automatically adding devices I have searched all over, and followed lots of dead ends and unanswered questions on this issue. I need to get this monitor recognised so I can use the native resolution of 1600x1200. The Nvidia driver in Windows has no problem with this. The monitor is an old Iiyama HM204DT A. Is there a way of configuring Xorg manually to get these working? I have tried xrandr but this will not work. Output:- sean@sean-P55-USB3:~$ xrandr Screen 0: minimum 8 x 8, current 1152 x 864, maximum 16384 x 16384 DVI-I-0 connected 1152x864+0+0 (normal left inverted right x axis y axis) 0mm x 0mm 1024x768 60.0 + 1360x768 60.0 59.8 1152x864 60.0* 800x600 72.2 60.3 56.2 680x384 119.9 119.6 640x480 59.9 512x384 120.0 400x300 144.4 320x240 120.1 DVI-I-1 disconnected (normal left inverted right x axis y axis) DVI-I-2 disconnected (normal left inverted right x axis y axis) HDMI-0 disconnected (normal left inverted right x axis y axis) DVI-I-3 disconnected (normal left inverted right x axis y axis) Tried Nvidia Xorg.config: sean@sean-P55-USB3:~$ sudo nvidia-xconfig [sudo] password for sean: Using X configuration file: "/etc/X11/xorg.conf". VALIDATION ERROR: Data incomplete in file /etc/X11/xorg.conf. Device section "Default Device" must have a Driver line. Backed up file '/etc/X11/xorg.conf' as '/etc/X11/xorg.conf.nvidia-xconfig-original' Backed up file '/etc/X11/xorg.conf' as '/etc/X11/xorg.conf.backup' New X configuration file written to '/etc/X11/xorg.conf' How do I insert a driver line? This is a bit of a pain as I want to use my Vectorworks cad program in a WinXP Vbox at 1600x1200 but all virtual drives are restricted to the host screen resolution. Do i need to manually create EIDI info in Xorg? I am slightly confused about how Xorg and Nvidia relate Please help

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  • No audio with headphones, but audio works with integrated speakers

    - by Pedro
    My speakers work correctly, but when I plug in my headphones, they don't work. I am running Ubuntu 10.04. My audio card is Realtek ALC259 My laptop model is a HP G62t a10em In another thread someone fixed a similar issue (headphones work, speakers not) folowing this: sudo vi /etc/modprobe.d/alsa-base.conf (or some other editor instead of Vi) Append the following at the end of the file: alias snd-card-0 snd-hda-intel options snd-hda-intel model=auto Reboot but it doesnt work for me. Before making and changes to alsa, this was the output: alsamixer gives me this: Things I did: followed this HowTo but now no hardware seems to be present (before, there were 2 items listed): Now, alsamixer gives me this: alsamixer: relocation error: alsamixer: symbol snd_mixer_get_hctl, version ALSA_0.9 not defined in file libasound.so.2 with link time reference I guess there was and error in the alsa-driver install so I began reinstalling it. cd alsa-driver* //this works fine// sudo ./configure --with-cards=hda-intel --with-kernel=/usr/src/linux-headers-$(uname -r) //this works fine// sudo make //this doesn't work. see ouput error below// sudo make install Final lines of sudo make: hpetimer.c: In function ‘snd_hpet_open’: hpetimer.c:41: warning: implicit declaration of function ‘hpet_register’ hpetimer.c:44: warning: implicit declaration of function ‘hpet_control’ hpetimer.c:44: error: expected expression before ‘unsigned’ hpetimer.c: In function ‘snd_hpet_close’: hpetimer.c:51: warning: implicit declaration of function ‘hpet_unregister’ hpetimer.c:52: error: invalid use of undefined type ‘struct hpet_task’ hpetimer.c: In function ‘hpetimer_init’: hpetimer.c:88: error: ‘EINVAL’ undeclared (first use in this function) hpetimer.c:99: error: invalid use of undefined type ‘struct hpet_task’ hpetimer.c:100: error: invalid use of undefined type ‘struct hpet_task’ hpetimer.c: At top level: hpetimer.c:121: warning: excess elements in struct initializer hpetimer.c:121: warning: (near initialization for ‘__param_frequency’) hpetimer.c:121: warning: excess elements in struct initializer hpetimer.c:121: warning: (near initialization for ‘__param_frequency’) hpetimer.c:121: warning: excess elements in struct initializer hpetimer.c:121: warning: (near initialization for ‘__param_frequency’) hpetimer.c:121: warning: excess elements in struct initializer hpetimer.c:121: warning: (near initialization for ‘__param_frequency’) hpetimer.c:121: error: extra brace group at end of initializer hpetimer.c:121: error: (near initialization for ‘__param_frequency’) hpetimer.c:121: warning: excess elements in struct initializer hpetimer.c:121: warning: (near initialization for ‘__param_frequency’) make[1]: *** [hpetimer.o] Error 1 make[1]: Leaving directory `/usr/src/alsa/alsa-driver-1.0.9/acore' make: *** [compile] Error 1 And then sudo make install gives me: rm -f /lib/modules/0.0.0/misc/snd*.*o /lib/modules/0.0.0/misc/persist.o /lib/modules/0.0.0/misc/isapnp.o make[1]: Entering directory `/usr/src/alsa/alsa-driver-1.0.9/acore' mkdir -p /lib/modules/0.0.0/misc cp snd-hpet.o snd-page-alloc.o snd-pcm.o snd-timer.o snd.o /lib/modules/0.0.0/misc cp: cannot stat `snd-hpet.o': No such file or directory cp: cannot stat `snd-page-alloc.o': No such file or directory cp: cannot stat `snd-pcm.o': No such file or directory cp: cannot stat `snd-timer.o': No such file or directory cp: cannot stat `snd.o': No such file or directory make[1]: *** [_modinst__] Error 1 make[1]: Leaving directory `/usr/src/alsa/alsa-driver-1.0.9/acore' make: *** [install-modules] Error 1 [SOLUTION] After screwing it all up, someone mentioned why not trying using the packages in Synaptic - so I did. I have reinstalled the following packages and rebooter: -alsa-hda-realtek-ignore-sku-dkms -alsa-modules-2.6.32-25-generic -alsa-source -alsa-utils -linux-backports-modules-alsa-lucid-generic -linux-backports-modules-alsa-lucid-generic-pae -linux-sound-base -(i think i listed them all) After rebooting, the audio worked, both in speakers and headphones. I have no idea which is the package that made my audio work, but it certainly was one of them. [/SOLUTION]

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  • List of available whitepapers as at 04 May 2010

    - by Anthony Shorten
    The following table lists the whitepapers available, from My Oracle Support, for any Oracle Utilities Application Framework based product: KB Id Document Title Contents 559880.1 ConfigLab Design Guidelines Whitepaper outlining how to design and implement a ConfigLab solution. 560367.1 Technical Best Practices for Oracle Utilities Application Framework Based Products Whitepaper summarizing common technical best practices used by partners, implementation teams and customers.  560382.1 Performance Troubleshooting Guideline Series A set of whitepapers on tracking performance at each tier in the framework. The individual whitepapers are as follows: Concepts - General Concepts and Performance Troublehooting processes Client Troubleshooting - General troubleshooting of the browser client with common issues and resolutions. Network Troubleshooting - General troubleshooting of the network with common issues and resolutions. Web Application Server Troubleshooting - General troubleshooting of the Web Application Server with common issues and resolutions. Server Troubleshooting - General troubleshooting of the Operating system with common issues and resolutions. Database Troubleshooting - General troubleshooting of the database with common issues and resolutions. Batch Troubleshooting - General troubleshooting of the background processing component of the product with common issues and resolutions. 560401.1 Software Configuration Management Series  A set of whitepapers on how to manage customization (code and data) using the tools provided with the framework. The individual whitepapers are as follows: Concepts - General concepts and introduction. Environment Management - Principles and techniques for creating and managing environments. Version Management - Integration of Version control and version management of configuration items.  Release Management - Packaging configuration items into a release.  Distribution - Distribution and installation of  releases across environments  Change Management - Generic change management processes for product implementations. Status Accounting -Status reporting techniques using product facilities.  Defect Management -Generic defect management processes for product implementations. Implementing Single Fixes - Discussion on the single fix architecture and how to use it in an implementation. Implementing Service Packs - Discussion on the service packs and how to use them in an implementation. Implementing Upgrades - Discussion on the the upgrade process and common techniques for minimizing the impact of upgrades. 773473.1 Oracle Utilities Application Framework Security Overview Whitepaper summarizing the security facilities in the framework. Updated for OUAF 4.0.1 774783.1 LDAP Integration for Oracle Utilities Application Framework based products Whitepaper summarizing how to integrate an external LDAP based security repository with the framework.  789060.1 Oracle Utilities Application Framework Integration Overview Whitepaper summarizing all the various common integration techniques used with the product (with case studies). 799912.1 Single Sign On Integration for Oracle Utilities Application Framework based products Whitepaper outlining a generic process for integrating an SSO product with the framework. 807068.1 Oracle Utilities Application Framework Architecture Guidelines This whitepaper outlines the different variations of architecture that can be considered. Each variation will include advice on configuration and other considerations. 836362.1 Batch Best Practices for Oracle Utilities Application Framework based products This whitepaper oulines the common and best practices implemented by sites all over the world. Updated for OUAF 4.0.1 856854.1 Technical Best Practices V1 Addendum  Addendum to Technical Best Practices for Oracle Utilities Application Framework Based Products containing only V1.x specific advice. 942074.1 XAI Best Practices This whitepaper outlines the common integration tasks and best practices for the Web Services Integration provided by the Oracle Utilities Application Framework. Updated for OUAF 4.0.1 970785.1 Oracle Identity Manager Integration Overview This whitepaper outlines the principals of the prebuilt intergration between Oracle Utilities Application Framework Based Products and Orade Identity Manager used to provision user and user group secuity information 1068958.1 Production Environment Configuration Guidelines (New!) Whitepaper outlining common production level settings for the products

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  • Error:couldn't read file-Kernel panic

    - by Thanos
    I have just installed ubuntu 12.04.1. To be honest I had to run installation several times until it was finished fine. When I finally managed to install it properly, I power on the laptop and the grub shoed up! I selected ubuntu generic. It takes some time to load and when it does I get an error message stating that error: couldn't read file Press any key to continue If I press any button nothing happens. If a leave it there, in a short while there is a black screen loading which gives some weird messages [0.946710] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block (0,0) [0.946755] Pid: 1, comm: swapper/0 Not tainted 3.2.0-29-generic #46-Ubuntu [0.946792] Call Trace: [0.946831] [<ffffffff81640ec8>] panic+0x91/0x1a4 [0.946869] [<ffffffff81cfc01e>] mount_block_root+0xdc/0x18e [0.946909] [<ffffffff81002930>] ? populate_rootfs_wait+0x300/0x9d0 [0.946947] [<ffffffff81cfc257>] mount_root+0x54/0x59 [0.946982] [<ffffffff81cfcec9>] prepare_namespace+0x16d/0x1a6 [0.947019] [<ffffffff81cfbd63>] kernel_init+0x153/0x158 [0.947094] [<ffffffff81cfbc10>] ? start_kernel+0x3bd/0x3bd [0.947129] [<ffffffff81664030>] ? gs_change+0x13/0x13 The thing is that the laptop isn't mine. A friend tried to dual boot ubuntu alongside windows 7 but he didn't succeed. Ubuntu option was in grub, but when you tried to boot it rebooted from the start. So from a Live CD I erased ubuntu, started windows to check if something went wrong, and fortunately everything was OK. Windows started normally! So I tried to install ubuntu. Before installation was completed the installer crashed! I was afraid that he would lost windows, something that was true... At that point I tried to install windows but whichever distro(XP, 7{home, proffessional, ultimate},8) I tried it could never reach the end. So I tried to reinstall ubuntu but I was facing those weird messages. What can I do to move on? ______________________________________________________________________ EDIT1: I tried to check and fix(if possible) with GParted it took a lot of hours,although gparted displays only 01:14, I restarted the system and now I get not exactly the same messages. Numbers in braces [ ] are different [0.818189] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block (0,0) [0.818235] Pid: 1, comm: swapper/0 Not tainted 3.2.0-29-generic #46-Ubuntu [0.818272] Call Trace: [0.818312] [<ffffffff81640ec8>] panic+0x91/0x1a4 [0.818351] [<ffffffff81cfc01e>] mount_block_root+0xdc/0x18e [0.818391] [<ffffffff81002930>] ? populate_rootfs_wait+0x300/0x9d0 [0.818428] [<ffffffff81cfc257>] mount_root+0x54/0x59 [0.818464] [<ffffffff81cfcec9>] prepare_namespace+0x16d/0x1a6 [0.818501] [<ffffffff81cfbd63>] kernel_init+0x153/0x158 [0.818574] [<ffffffff81cfbc10>] ? start_kernel+0x3bd/0x3bd [0.818610] [<ffffffff81664030>] ? gs_change+0x13/0x13 What on earth is going on? ______________________________________________________________________ EDIT2: I forgot to mention that my friend gave a punch to his laptop during a game. After that his cooler became to make a weird noise so I checked and it is a bit tortuous but it is working. What I beleive must be wrong is that his HDD makes a weird noise while trying to load ubuntu, which means he might need a new HDD. Could that be true?

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  • What packages do I need to compile .tex documents using XeLaTeX?

    - by maria
    Hi I'm aware of the existence of similar threads on this forum. But any of replies mach to my problem. I'm using Ubuntu 10.4 and I hadn't problems with fonts till I've decided to use XeLaTeX instead of LaTeX (cf http://tex.stackexchange.com/questions/12347/typesetting-a-document-using-arabic-script/12358#12358). The problem is that I'm not able to compile any .tex document using XeLaTeX, as well as properly display XeLaTeX documentation. As I've learn thanks to mentioned thread, XeLaTeX uses the fonts availables in general in the system. I was trying yo read fontspec documentation, but it opens in pdf with a lot of white gaps and terminal output (quite long) consist mostly of errors. This are just few lines of it: Error: Missing language pack for 'Adobe-Japan1' mapping Error: Unknown font tag 'F5.1' Error (24124): No font in show Error: Unknown font tag 'F5.1' I was trying to compile simple XeLaTeX file: \documentclass{article} \usepackage{fontspec} \setmainfont{Linux Libertine O} \begin{document} Hello World! \end{document} without succes. This is terminal output of compilation: This is XeTeX, Version 3.1415926-2.2-0.9995.2 (TeX Live 2009/Debian) restricted \write18 enabled. entering extended mode (./ex.tex LaTeX2e <2009/09/24> Babel <v3.8l> and hyphenation patterns for english, usenglishmax, dumylang, noh yphenation, polish, loaded. (/usr/share/texmf-texlive/tex/latex/base/article.cls Document Class: article 2007/10/19 v1.4h Standard LaTeX document class (/usr/share/texmf-texlive/tex/latex/base/size10.clo)) (/usr/share/texmf-texlive/tex/xelatex/fontspec/fontspec.sty (/usr/share/texmf-texlive/tex/generic/ifxetex/ifxetex.sty) (/usr/share/texmf-texlive/tex/latex/tools/calc.sty) (/usr/share/texmf-texlive/tex/latex/xkeyval/xkeyval.sty (/usr/share/texmf-texlive/tex/generic/xkeyval/xkeyval.tex (/usr/share/texmf-texlive/tex/generic/xkeyval/keyval.tex))) (/usr/share/texmf-texlive/tex/latex/base/fontenc.sty (/usr/share/texmf-texlive/tex/xelatex/euenc/eu1enc.def) (/usr/share/texmf-texlive/tex/xelatex/euenc/eu1lmr.fd)) fontspec.cfg loaded. (/usr/share/texmf-texlive/tex/xelatex/fontspec/fontspec.cfg))kpathsea: Invalid fontname `Linux Libertine O', contains ' ' ! Font \zf@basefont="Linux Libertine O" at 10.0pt not loadable: Metric (TFM) fi le or installed font not found. \zf@fontspec ...ntname \zf@suffix " at \f@size pt \unless \ifzf@icu \zf@set@... l.3 \setmainfont{Linux Libertine O} ? I can't find Linux Libertine O. Searching for otf- by aptitude gives as result: maria@maria-laptop:/etc/fonts$ aptitude search otf p emdebian-rootfs - emdebian root filesystem support p libotf-bin - A Library for handling OpenType Font - utilities p libotf-dev - A Library for handling OpenType Font - development i libotf0 - A Library for handling OpenType Font - runtime p libotf0-dbg - The libotf libraries and debugging symbols p libpam-dotfile - A PAM module which allows users to have more than one password p livecd-rootfs - construction script for the livecd rootfs p makebootfat - Utility to create a bootable FAT filesystem p otf-ipaexfont - Japanese OpenType font, IPAexFont (IPAexGothic/Mincho) p otf-ipaexfont-gothic - Japanese OpenType font, IPAexFont (IPAexGothic) p otf-ipaexfont-mincho - Japanese OpenType font, IPAexFont (IPAexMincho) p otf-ipafont - Japanese OpenType font set, IPAfont p otf-ipafont-gothic - Japanese OpenType font set, IPA Gothic font p otf-ipafont-mincho - Japanese OpenType font set, IPA Mincho font p otf-stix - the Scientific and Technical Information eXchange fonts p otf-thai-tlwg - Thai fonts in OpenType format p otf-yozvox-yozfont - Japanese proportional Handwriting OpenType font p otf2bdf - generate BDF bitmap fonts from OpenType outline fonts p robotfindskitten - Zen Simulation of robot finding kitten So font in question is not just uninstalled, but not available, if I'm not wrong. Does it mean that I lack some repositoires? I was trying also to apply solution from the thread How do I reinstall default fonts?, but the result is: maria@maria-laptop:~$ sudo apt-get install msttcorefonts [sudo] password for maria: Reading package lists... Done Building dependency tree Reading state information... Done Note, selecting ttf-mscorefonts-installer instead of msttcorefonts ttf-mscorefonts-installer is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. maria@maria-laptop:~$ It seems that is not a usual problem for use of XeLaTeX; nobody in the mentioned thread suggested instalation of anything else than TeX Live. Thanks in advance

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  • Ubuntu Server 12 not spawning a serial ttyS0 when running on Xen

    - by segfaultreloaded
    I have this problem on more than one host, so the specific hardware is not an issue. Bare metal Ubuntu 12 is not creating a login process on the only serial port, in the default configuration. The serial port works correctly with the firmware. It works correctly with Grub2. I have even connected the serial line to 2 different external client boxes, so the problem is neither the hardware nor the remote client. When finally booted, the system fails to create the login process. root@xenpro3:~# ps ax | grep tty 1229 tty4 Ss+ 0:00 /sbin/getty -8 38400 tty4 1233 tty5 Ss+ 0:00 /sbin/getty -8 38400 tty5 1239 tty2 Ss+ 0:00 /sbin/getty -8 38400 tty2 1241 tty3 Ss+ 0:00 /sbin/getty -8 38400 tty3 1245 tty6 Ss+ 0:00 /sbin/getty -8 38400 tty6 1403 tty1 Ss+ 0:00 /sbin/getty -8 38400 tty1 1996 pts/0 S+ 0:00 grep --color=auto tty root@xenpro3:~# dmesg | grep tty [ 0.000000] Command line: BOOT_IMAGE=/vmlinuz-3.2.0-30-generic root=/dev/mapper/xenpro3-root ro console=ttyS0,115200n8 [ 0.000000] Kernel command line: BOOT_IMAGE=/vmlinuz-3.2.0-30-generic root=/dev/mapper/xenpro3-root ro console=ttyS0,115200n8 [ 0.000000] console [ttyS0] enabled [ 2.160986] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A [ 2.203396] serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A [ 2.263296] 00:08: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A [ 2.323102] 00:09: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A root@xenpro3:~# uname -a Linux xenpro3 3.2.0-30-generic #48-Ubuntu SMP Fri Aug 24 16:52:48 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux root@xenpro3:~# I have tried putting a ttyS0.conf file in /etc/initab, which solves the problem bare metal but I still cannot get the serial port to work when booting Ubuntu on top of Xen, as domain 0. My serial line output looks like this, when booting Xen /dev/ttyS0 at 0x03f8 (irq = 4) is a 16550A * Exporting directories for NFS kernel daemon... [ OK ] * Starting NFS kernel daemon [ OK ] SSL tunnels disabled, see /etc/default/stunnel4 [ 18.654627] XENBUS: Unable to read cpu state [ 18.659631] XENBUS: Unable to read cpu state [ 18.664398] XENBUS: Unable to read cpu state [ 18.669248] XENBUS: Unable to read cpu state * Starting Xen daemons [ OK ] mountall: Disconnected from Plymouth At this point, the serial line is no longer connected to a process. Xen itself is running just fine. Dmesg gives me a long list of [ 120.236841] init: ttyS0 main process ended, respawning [ 120.239717] ttyS0: LSR safety check engaged! [ 130.240265] init: ttyS0 main process (1631) terminated with status 1 [ 130.240294] init: ttyS0 main process ended, respawning [ 130.242970] ttyS0: LSR safety check engaged! which is no surprise because I see root@xenpro3:~# ls -l /dev/ttyS? crw-rw---- 1 root tty 4, 64 Nov 7 14:04 /dev/ttyS0 crw-rw---- 1 root dialout 4, 65 Nov 7 14:04 /dev/ttyS1 crw-rw---- 1 root dialout 4, 66 Nov 7 14:04 /dev/ttyS2 crw-rw---- 1 root dialout 4, 67 Nov 7 14:04 /dev/ttyS3 crw-rw---- 1 root dialout 4, 68 Nov 7 14:04 /dev/ttyS4 crw-rw---- 1 root dialout 4, 69 Nov 7 14:04 /dev/ttyS5 crw-rw---- 1 root dialout 4, 70 Nov 7 14:04 /dev/ttyS6 crw-rw---- 1 root dialout 4, 71 Nov 7 14:04 /dev/ttyS7 crw-rw---- 1 root dialout 4, 72 Nov 7 14:04 /dev/ttyS8 crw-rw---- 1 root dialout 4, 73 Nov 7 14:04 /dev/ttyS9 If I manually change the group of /dev/ttyS0 to dialout, it gets changed back. I have made no changes to the default udev rules, so I cannot see where this problem is coming from. Sincerely, John

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