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  • ReflectionTypeLoadException with Silverlight serialization attributes

    - by RPS
    Hi all, I´m trying to inspect the types in a silverlight 4 assembly from a .NET 3.5 application. I have loaded the silverlight assembly with a Assembly.ReflectionOnlyLoadFrom sentence. contractsAssembly = Assembly.ReflectionOnlyLoadFrom(contractsAssemblyPath); When the .NET application tries to perform a call to GetTypes(), it throws a ReflectionTypeLoadException. Type[] types = contractsAssembly.GetTypes(); The LoaderExceptions property in the ReflectionTypeLoadException contains a list of exceptions, all of them regarding a problem loading a type that has serialization attributes. Type 'XXXX' in assembly 'YYYY' has method 'OnSerializing' with an incorrect signature for the serialization attribute that it is decorated with. The type XXXX has the following definitions in it: [System.Runtime.Serialization.OnSerializing] public void OnSerializing(System.Runtime.Serialization.StreamingContext context) [System.Runtime.Serialization.OnSerialized] public void OnSerialized(System.Runtime.Serialization.StreamingContext context) [System.Runtime.Serialization.OnDeserializing] public void OnDeserializing(System.Runtime.Serialization.StreamingContext context) [System.Runtime.Serialization.OnDeserialized] public void OnDeserialized(System.Runtime.Serialization.StreamingContext context) I have tried changing the method signature to internal or private, but with no luck. When I perform a GetTypes() call in a silverlight application that inspects this assembly I have no problems, so I thought that this was due to an incompatibility between .NET Framework and Silverlight. However, I see that .NET tools such as Reflector can inspect this Silverlight assembly, so there is a way to inspect Silverlight assemblies with serialization attributes from a .NET applciation. Could someone shed me some light on this? Many thanks in advance. Jose Antonio

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  • Interoperability between Weblogic 10.3.1 and Oracle BPM 10.3.1

    - by alfredozn
    Hi, Im migrating an ALBPM 6.5 running on a WLS 10.0 to an Oracle BPM 10.3.1 running on WLS 10.3.1 I got some problems with the Oracle driver because the old driver (weblogic.jdbcx.oracle.OracleDataSource) was definitely removed from the server and is not longer supported. Instead I used the thin driver (oracle.jdbc.xa.OracleXADataSource), the database migration was executed succesfully but after that, when I try to deploy the engine ear in WebLogic I got exceptions asociated to the driver: [ (cont) ] Main: Caused by: weblogic.application.ModuleException: [HTTP:101216]Servlet: "engineStartup" failed to preload on startup in Web application: "/albpmServices/albpm_engine". [ (cont) ] Main: fuego.directory.DirectoryRuntimeException: Exception [java.sql.SQLException: Invalid column type]. [ (cont) ] Main: at fuego.directory.DirectoryRuntimeException.wrapException(DirectoryRuntimeException.java:85) [ (cont) ] Main: at fuego.directory.provider.jdbc.oracle.OraclePersistenceManager.mapSQLException(OraclePersistenceManager.java:145) [ (cont) ] Main: at fuego.directory.provider.jdbc.datadirect.oracle.DataDirectOraclePersistenceManager.mapSQLException(DataDirectOraclePersistenceManager.java:51) [ (cont) ] Main: at fuego.directory.provider.jdbc.JDBCServiceAccessor.mapSQLException(JDBCServiceAccessor.java:78) [ (cont) ] Main: at fuego.directory.provider.jdbc.JDBCObjectPropertiesAccessor.fetchAllDirectoryProperties(JDBCObjectPropertiesAccessor.java:442) [ (cont) ] Main: at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) I was looking around for a solution but all is pointing to use the old driver, I think isn't a good practice to force the server to use this driver after Oracle remove it completely. Any suggestions or similar experiences??

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  • We have multiple app servers running against a single database. How do I ensure that each row in a q

    - by Dave
    We have about 7 app servers running .NET windows services that ping a single sql server 2005 queue table and fetch a fixed amount of records to process at fixed intervals. The amount of records to process and the amount of time between fetches are both configurable and are initially set to 100 and 30 seconds initially. Currently, my queue table has an int status column which can be either "Ready, Processing, Complete, Error". The proc that fetches the records has a sql transaction with the following code inside the transaction: 1) Fetch x number of records into temp table where the status is "Ready". The select uses a holdlock hint 2) Update the status on those records in the Queue table to "Processing" The .NET services do some processing that may take seconds or even minutes per record. Another proc is called per record that simply updates the status to "Complete". The update proc has no transaction as I'm leaning on the implicit transaction as part of the update clause here. I don't know the traffic exceptions for this but figure it will be under 10k records per day. Is this the best way to handle this scenario? If so, are there any details that I've left out, such as a hint here or there? Thanks! Dave

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  • Adding new record to a VFP data table in VB.NET with ADO recordsets

    - by Gerry
    I am trying to add a new record to a Visual FoxPro data table using an ADO dataset with no luck. The code runs fine with no exceptions but when I check the dbf after the fact there is no new record. The mDataPath variable shown in the code snippet is the path to the .dbc file for the entire database. A note about the For loop at the bottom; I am adding the body of incoming emails to this MEMO field so thought I needed to break the addition of this string into 256 character Chunks. Any guidance would be greatly appreciated. cnn1.Open("Driver={Microsoft Visual FoxPro Driver};" & _ "SourceType=DBC;" & _ "SourceDB=" & mDataPath & ";Exclusive=No") Dim RS As ADODB.RecordsetS = New ADODB.Recordset RS.Open("select * from gennote", cnn1, 1, 3, 1) RS.AddNew() 'Assign values to the first three fields RS.Fields("ignnoteid").Value = NextIDI RS.Fields("cnotetitle").Value = "'" & mail.Subject & "'" RS.Fields("cfilename").Value = "''" 'Looping through 254 characters at a time and add the data 'to Ado Field buffer For i As Integer = 1 To Len(memo) Step liChunkSize liStartAt = i liWorkString = Mid(mail.Body, liStartAt, liChunkSize) RS.Fields("mnote").AppendChunk(liWorkString) Next 'Update the recordset RS.Update() RS.Requery() RS.Close()

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  • Cannot rollback ransaction with Entity Framework

    - by Luca
    I have to do queries on uncommitted changes and I tried to use transactions, but I found that it do not work if there are exceptions. I made a simple example to reproduce the problem. I have a database with only one table called "Tabella" and the table has two fields: "ID" is a autogenerated integer, and "Valore" is an integer with a Unique constraint. Then I try to run this code: using (TransactionScope scope = new TransactionScope()) { Db1Container db1 = new Db1Container(); try { db1.AddToTabella(new Tabella() { Valore = 1 }); db1.SaveChanges(); } catch { } try { db1.AddToTabella(new Tabella() { Valore = 1 }); db1.SaveChanges(); //Unique constraint is violated here and an exception is thrown } catch { } try { db1.AddToTabella(new Tabella() { Valore = 2 }); db1.SaveChanges(); } catch { } //scope.Complete(); //NEVER called } //here everything should be rolled back Now if I look into the database it should contain no records because the transaction should rollback, instead I find two records!!!! One with Valore=1 and one with Valore=2. I am missing something? It looks like the second call to SaveChanges method rollback its own changes and "deletes" the transaction, then the third call to SaveChanges commits the changes of the first and the third insert (at this point it is like the transaction not exists). I also tried to use SaveChanges(false) method (even without calling AcceptAllChanges method), but with no success: I have the same behaviour. I do not want the transaction to be rolled back automatically by SaveChanges, because I want to correct the errors (for example by user interaction in the catch statement) and make a retry. Can someone help me with this? It seems like a "bug", and it is giving me a really big headache...

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  • Program and debugger quit without indication of problem

    - by spender
    OK, not quite a Heisenbug but similar in nature. I'm developing a WPF application. When debugging, the logic reaches a certain point, then the application quits for no reason. VS debugger catches nothing and the only indication of a problem is the following in the output window: The program '[6228] SomeApp.vshost.exe: Managed (v4.0.30319)' has exited with code 1073741855 (0x4000001f). When debugging the release version, or indeed running the debug build out of the debugger (in fact all combos that aren't running the debug version in debugger), everything works fine. I'm trying to catch unhandled exceptions with the following code: AppDomain .CurrentDomain .UnhandledException += (sender, e) => { Debug.WriteLine("Unhandled Exception " + e.ExceptionObject); }; Application .Current .DispatcherUnhandledException += (sender1, e1) => { Debug.WriteLine("DispatcherUnhandledException " + e1.Exception); }; ...but I'm not catching anything. I'm considering peppering the app with debug output statements, but it's highly asynchronous so reading this will be both arduous and tedious. So tell me, if you can... how do I start figuring WTF is going on?

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  • Why is WCF Stream response getting corrupted on write to disk?

    - by Alvin S
    I am wanting to write a WCF web service that can send files over the wire to the client. So I have one setup that sends a Stream response. Here is my code on the client: private void button1_Click(object sender, EventArgs e) { string filename = System.Environment.CurrentDirectory + "\\Picture.jpg"; if (File.Exists(filename)) File.Delete(filename); StreamServiceClient client = new StreamServiceClient(); int length = 256; byte[] buffer = new byte[length]; FileStream sink = new FileStream(filename, FileMode.CreateNew, FileAccess.Write); Stream source = client.GetData(); int bytesRead; while ((bytesRead = source.Read(buffer,0,length))> 0) { sink.Write(buffer,0,length); } source.Close(); sink.Close(); MessageBox.Show("All done"); } Everything processes fine with no errors or exceptions. The problem is that the .jpg file that is getting transferred is reported as being "corrupted or too large" when I open it. What am I doing wrong? On the server side, here is the method that is sending the file. public Stream GetData() { string filename = Environment.CurrentDirectory+"\\Chrysanthemum.jpg"; FileStream myfile = File.OpenRead(filename); return myfile; } I have the server configured with basicHttp binding with Transfermode.StreamedResponse.

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  • Distinguishing between .NET exception types

    - by Swingline Rage
    For the love of all things holy, how do you distinguish between different "exception flavors" within the predefined .NET exception classes? For example, a piece of code might throw an XmlException under the following conditions: The root element of the document is NULL Invalid chars are in the document The document is too long All of these are thrown as XmlException objects and all of the internal "tell me more about this exception" fields (such as Exception.HResult, Exception.Data, etc.) are usually empty or null. That leaves Exception.Message as the only thing that allows you to distinguish among these exception types, and you can't really depend on it because, you guessed it, the Exception.Message string is glocabilized, and can change when the culture changes. At least that's my read on the documentation. Exception.HResult and Exception.Data are widely ignored across the .NET libraries. They are the red-headed stepchildren of the world's .NET error-handling code. And even assuming they weren't, the HRESULT type is still the worst, downright nastiest error code in the history of error codes. Why we are still looking at HRESULTs in 2010 is beyond me. I mean if you're doing Interop or P/Invoke that's one thing but... HRESULTs have no place in System.Exception. HRESULTs are a wart on the proboscis of System.Exception. But seriously, it means I have to set up a lot of detailed specific error-handling code in order to figure out the same information that should have been passed as part of the exception data. Exceptions are useless if they force you to work like this. What am I doing wrong?

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  • Spring Security HTTP Basic Authentication

    - by Raspayu
    Hi people! I am trying to do a really simple basic authentication with Spring Security. I have configured properly the namespace, and there are no Exceptions in the server. In my "servlet.xml" I have got the next for Spring Security: <security:http> <security:http-basic></security:http-basic> <security:intercept-url method="POST" pattern="/**" access="ROLE_USER" /> </security:http> <security:authentication-manager alias="authenticationManager"> <security:authentication-provider> <security:user-service> <security:user name="cucu" password="tas" authorities="ROLE_USER" /> <security:user name="bob" password="bobspassword" authorities="ROLE_USER" /> </security:user-service> </security:authentication-provider> </security:authentication-manager> It nearly all goes perfect: the methods that are not POST doesn't prompt any login form, and the POST method prompt it. The problem is, that nor "cucu", neither "bob" can login there. Can anyone see what am I doing wrong? Thanks in advance! ;-)

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  • Scrapy issue with iTunes' AppStore

    - by Eric
    I am using Scrapy to fetch some data from iTunes' AppStore database. I start with this list of apps: http://itunes.apple.com/us/genre/mobile-software-applications/id36?mt=8 In the following code I have used the simplest regex which targets all apps in the US store. from scrapy.contrib.linkextractors.sgml import SgmlLinkExtractor from scrapy.contrib.spiders import CrawlSpider, Rule class AppStoreSpider(CrawlSpider): domain_name = 'itunes.apple.com' start_urls = ['http://itunes.apple.com/us/genre/mobile-software-applications/id6015?mt=8'] rules = ( Rule(SgmlLinkExtractor(allow='itunes\.apple\.com/us/app'), 'parse_app', follow=True, ), ) def parse_app(self, response): .... SPIDER = AppStoreSpider() When I run it I receive the following: [itunes.apple.com] DEBUG: Crawled (200) <GET http://itunes.apple.com/us/genre/mobile-software-applications/id6015?mt=8> (referer: None) [itunes.apple.com] DEBUG: Filtered offsite request to 'itunes.apple.com': <GET http://itunes.apple.com/us/app/bloomberg/id281941097?mt=8> As you can see, when it starts crawling the first page it says: "Filtered offsite request to 'itunes.apple.com'". and then the spider stops.. it also returns this message: [ScrapyHTTPPageGetter,client] /usr/lib/python2.5/cookielib.py:1577: exceptions.UserWarning: cookielib bug! Traceback (most recent call last): File "/usr/lib/python2.5/cookielib.py", line 1575, in make_cookies parse_ns_headers(ns_hdrs), request) File "/usr/lib/python2.5/cookielib.py", line 1532, in _cookies_from_attrs_set cookie = self._cookie_from_cookie_tuple(tup, request) File "/usr/lib/python2.5/cookielib.py", line 1451, in _cookie_from_cookie_tuple if version is not None: version = int(version) ValueError: invalid literal for int() with base 10: '"1"' I have used the same script for other website and I didn't have this problem. Any suggestion?

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  • Problem upgrading eclipse rcp app from 3.3 to 3.5 on Mac OS

    - by Alb
    I previously had an eclipse rcp app based on eclipse 3.3 pugins deployed on both windows and mac OS X 10.4. i'm now trying to port the app to java 1.6 and eclipse 3.5 (Build id: 20100218-1602) plugins on Mac OS X 10.5.8 (Leopard). I can launch the product from eclipse 3.5 on windows but not on Mac OS X. I have the 64bit cocoa eclipse IDE and java 6. In the launch configuration I set runtime JRE to JVM 1.6.0 and added required plugins. The plugins validate and everything else looks similar to windows configuration where it works, but when I launch i only get the following two lines in the console: 2010-03-16 13:29:32.742 java[758:10b] [Java CocoaComponent compatibility mode]: Enabled 2010-03-16 13:29:32.744 java[758:10b] [Java CocoaComponent compatibility mode]: Setting timeout for SWT to 0.100000 and then the program appears to just hang indefinitely. There is nothing written to the .log file so I'm not sure what error there is. EDIT: Here's what Yourkit profiling says before all cpu activity stops. +----------------------------------------------------------------------------+----------------+-----------------+ | Name | Time (ms) | Own Time (ms) | +----------------------------------------------------------------------------+----------------+-----------------+ | +---<All threads> | 2,799 100 % | | | | | | | | +---org.eclipse.equinox.launcher.Main.main(String[]) | 1,924 69% | 0 | | | | | | | +---org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run() | 632 23 % | 0 | | | | | | | +---java.lang.Thread.run() | 135 5 % | 0 | | | | | | | +---java.lang.ClassLoader.loadClassInternal(String) | 106 4 % | 0 | +----------------------------------------------------------------------------+----------------+-----------------+ , and this in the exceptions tab: Exception staticstics +----------------------------------------+--------------+ | Name | Count | +----------------------------------------+--------------+ | +---java.lang.ClassNotFoundException | 102 11 % | | | | | | +---java.net.MalformedURLException | 4 0 % | | | | | | +---java.lang.NoSuchMethodException | 3 0 % | | | | | | +---java.lang.NumberFormatException | 2 0 % | | | | | | +---java.io.FileNotFoundException | 1 0 % | | | | | | +---java.lang.UnsatisfiedLinkError | 1 0 % | +----------------------------------------+--------------+ and here's more details on the ClassNotFoundExceptions mentioned above: java.lang.ClassNotFoundException Start Level Event Dispatcher native ID: 0x8B0B group: 'main' 78 Thread-4 native ID: 0x10B group: 'main' 22 Framework Event Dispatcher native ID: 0xD207 group: 'main' 2 Anyone know why I don't see a trace for this in Eclipse or in any log files? any ideas where I should look? [Updated on: Tue, 16 March 2010 09:37]

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  • ejb testing issues with netbeans and openejb

    - by SibzTer
    I have created a netbeans 6.7 EnterpriseApplication project with ejb and war modules with a test stateless session ejb with a simple sayHello() method. I also added the openEjb library in order to unit test the ejb. Everything runs fine except that I keep getting the following error: Testsuite: com.myapp.test.NewEmptyJUnitTest Apache OpenEJB 3.1.1 build: 20090530-06:18 http://openejb.apache.org/ INFO - openejb.home = C:\Users\me\Documents\NetBeansProjects\TestEnterpriseApp\TestEnterpriseApp-ejb INFO - openejb.base = C:\Users\me\Documents\NetBeansProjects\TestEnterpriseApp\TestEnterpriseApp-ejb INFO - Configuring Service(id=Default Security Service, type=SecurityService, provider-id=Default Security Service) INFO - Configuring Service(id=Default Transaction Manager, type=TransactionManager, provider-id=Default Transaction Manager) INFO - Found ClientModule in classpath: C:\Program Files\NetBeans 6.7.1\java2\ant\lib\ant.jar INFO - Found ClientModule in classpath: C:\Program Files\NetBeans 6.7.1\java2\ant\lib\ant-launcher.jar INFO - Found EjbModule in classpath: C:\Users\me\Documents\NetBeansProjects\TestEnterpriseApp\TestEnterpriseApp-ejb\build\jar INFO - Found ClientModule in classpath: C:\Users\me\Documents\NetBeansProjects\TestEnterpriseApp\lib\OpenEJB\xml-resolver-1.2.jar INFO - Found ClientModule in classpath: C:\Users\me\Documents\Downloads\glassfish\lib\webservices-tools.jar INFO - Beginning load: C:\Program Files\NetBeans 6.7.1\java2\ant\lib\ant.jar INFO - Beginning load: C:\Program Files\NetBeans 6.7.1\java2\ant\lib\ant-launcher.jar INFO - Beginning load: C:\Users\me\Documents\NetBeansProjects\TestEnterpriseApp\TestEnterpriseApp-ejb\build\jar INFO - Beginning load: C:\Users\me\Documents\NetBeansProjects\TestEnterpriseApp\lib\OpenEJB\xml-resolver-1.2.jar INFO - Beginning load: C:\Users\me\Documents\Downloads\glassfish\lib\webservices-tools.jar INFO - Configuring enterprise application: classpath.ear WARN - No application-client.xml found assuming annotations present: classpath.ear, module: ant.jar WARN - No application-client.xml found assuming annotations present: classpath.ear, module: ant-launcher.jar WARN - No application-client.xml found assuming annotations present: classpath.ear, module: xml-resolver-1.2.jar WARN - No application-client.xml found assuming annotations present: classpath.ear, module: webservices-tools.jar java.lang.Exception: Could not load 1/0/com/sun/codemodel/CodeWriter.class at org.apache.xbean.finder.ClassFinder.readClassDef(ClassFinder.java:730) .... Turns out that I am getting the glassfish library webservices-tools.jar from somewhere somehow and I cant find out how to get rid of it so that I dont get the bunch of Exceptions whenever I try to run any junit tests. Has anyone faced this issue before? Can you help me resolve it please? Thanks.

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  • (Enterprise GlassFish v3 build 11) Communication link problem (MySQL DB)

    - by user312853
    I get a communication link failure while application tries to establish a connection with DB. [#|2010-04-08T20:09:57.825+0300|SEVERE|glassfish3.0|javax.enterprise.system.std.com.sun.enterprise.v3.services.impl|_ThreadID=24;_ThreadName=Thread-1;|Cannot connect to database server = com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.|#] Precisely at this string: Statement s = conn.createStatement(); where conn is defined as follows: private static java.sql.Connection conn; For this app I have set a connection pool with default parameters and currently it (app) uses both JPA and direct JDBC queries. Recreation of connection pool gave nothing, connection pool ping gave next message: Ping Connection Pool for pool is Failed. Ping failed Exce ption - Connection could not be allocated because: Communications lin k failure%%%EOL%%%%%%EOL%%%The last packet sent successfully to the s erver was 0 milliseconds ago. The driver has not received any packets from the server. Please check the server.log for more details.%%%EOL %%%Ping failed Exception - Connection could not be allocated because: Communications link failure and flushing the connection pool gave: com.sun.enterprise.admin.cli.CommandException: remote failure: Failed to flush connection pool ... However I can connect to the database from a terminal. Besides I have the same app working on my local machine with identical connection pool settings. Any one has an idea on whats going on or how to solve the trouble?

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  • How to migrate from XslTransform to XslCompiledTransform

    - by Atara
    I have the following code that I need to migrate from VS 2003 (.Net 1.1) to VS 2008 (.Net 2+) but I get compilation error - System.Xml.Xsl.XslTransform' is obsolete: This class has been deprecated. I probably need to use System.Xml.Xsl.XslCompiledTransform instead. but I do not find the matching Load() and Transform() overload versions that I can use with all the parameters of my original code. in MSDN [How to: Migrate Your XslTransform Code] I only found some simpler cases. http://msdn.microsoft.com/en-us/library/aa983475%28VS.80%29.aspx but in my code I see some remarks that hints that the added parameters were used to avoid exceptions, so I prefer to use these parameters. Can someone please help migrating this code? Thanks, Atara ' ---------------------------------------------------------------------- ' VS 2003 code: ' ---------------------------------------------------------------------- . . . Dim myXslDoc As Xml.XmlDocument ' ---------------------------------------------------------------------- Public Sub mcSetParameters(ByVal srcFileName As String) ' ---------------------------------------------------------------------- Me.myXslDoc = New Xml.XmlDocument Me.myXslDoc.Load(srcFileName) End Sub ' ---------------------------------------------------------------------- Public Sub mcSetHtml() ' ---------------------------------------------------------------------- Dim oXPathNav As System.Xml.XPath.XPathNavigator = xmlDoc.DocumentElement.CreateNavigator() Dim sbContent As New System.Text.StringBuilder Dim swContent As New System.IO.StringWriter(sbContent) Dim args As New System.Xml.Xsl.XsltArgumentList args.AddParam("paramName1", "", paramVal1.ToString) args.AddParam("paramName2", "", paramVal2.ToString) Try ' Try to avoid "Invalid site" exception, by using XmlUrlResolver and Evidence. ' If the XSLT stylesheet . . . comes from a code base that you trust, Then use Me.GetType().Assembly.Evidence() Dim resolver As System.Xml.XmlUrlResolver = New System.Xml.XmlUrlResolver resolver.Credentials = System.Net.CredentialCache.DefaultCredentials Dim xslt As System.Xml.Xsl.XslTransform = New System.Xml.Xsl.XslTransform xslt.Load(Me.myXslDoc, resolver, Me.GetType().Assembly.Evidence()) xslt.Transform(oXPathNav, args, swContent, Nothing) Catch ex As Exception Debug.WriteLine("Exception: {0}", ex.ToString()) End Try DoSomething(sbContent.ToString()) End Sub ' ----------------------------------------------------------------------

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  • C# IsolatedStorage Not Working

    - by Don
    I am building a C# .NET (VS2010) IE8 add-on application but am having some trouble saving data using IsolatedStorage. No exceptions occur but, after writing the data, when I try to read the contents back it is blank, and I can find no evidence that it actually saved. Could anyone point out any problems with the following code please that would explain why it doesn't work? //Write IsolatedStorageFile app_isoStore = IsolatedStorageFile.GetStore( IsolatedStorageScope.User | IsolatedStorageScope.Assembly, null, null); IsolatedStorageFileStream isoStream = new IsolatedStorageFileStream( "app_started.txt", FileMode.OpenOrCreate, FileAccess.Write, app_isoStore); StreamWriter iswriter = new StreamWriter(isoStream); iswriter.WriteLine("Run"); iswriter.Close(); //app_isoStore.Dispose(); app_isoStore.Close(); //Read IsolatedStorageFile app_isoStoreCheck = IsolatedStorageFile.GetStore( IsolatedStorageScope.User | IsolatedStorageScope.Assembly, null, null); IsolatedStorageFileStream isoReadStream = new IsolatedStorageFileStream( "app_started.txt", FileMode.Open, FileAccess.Read, app_isoStoreCheck); StreamReader isreader = new StreamReader(isoReadStream); string rdata = isreader.ReadToEnd(); isreader.Close(); //app_isoStoreCheck.Dispose(); app_isoStoreCheck.Close(); Should I be using: IsolatedStorageFile.GetStore(IsolatedStorageScope.User| IsolatedStorageScope.Domain|IsolatedStorageScope.Assembly, null,null) instead of: IsolatedStorageFile.GetStore(IsolatedStorageScope.User| IsolatedStorageScope.Assembly, null, null) What's the difference between the two GetStore examples above please?

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  • EJB3 - @Column(insertable="false") question

    - by WhiteTigerK
    Hi All, I'm building a J2SE application with EJB3 and an Oracle Express Edition DB. My problem is like that - I set an EntityBean in my project which matches a table in the DB. The table contains a column which is not nullable and has a default value. All I want is that when persisting a new data to this table using the EJB, the column's value will get its default value. This is how I set it in the project: //holds user's first name @Basic(optional = true) @Column(name = "FIRST_NAME", insertable = false, updatable = true, nullable = false) private String m_firstName; I also set it in the ORM.XML file: <basic name="firstName"> <column name="FIRST_NAME" insertable="false" updatable="true" nullable="false"/> </basic> But for some reason, when creating a new EntityBean and not setting the first name field, and then trying to persist it, i get the following exception: Exception [TOPLINK-4002] (Oracle TopLink Essentials - 2.1 (Build b60e-fcs (12/23/2008))): oracle.toplink.essentials.exceptions.DatabaseException Internal Exception: java.sql.SQLException: ORA-01400: cannot insert NULL into ("TSDB"."USERS"."FIRST_NAME") Which means that the persistence manager tries to insert the first name field although I told it not to. Am I doing something wrong here ? Thanks!

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  • Writing files in App_Data causes tempdata to be null

    - by RAMX
    I have a small asp.net MVC 1 web app that can store files and create directories in the App_Data directory. When the write operation succeeds, I add a message to the tempdata and do a redirectToRoute. The problem is that the tempdata is null when the action is executed. If i write the files in a directory outside of the web applications root directory, the tempdata is not null and everything works correctly. Any ideas why writing in the app_data seems to clear the tempdata ? edit: if DRS.Logic.Repository.Manager.CreateFile(path, hpf, comment) writes in the App_Data, TempData will be null in the action being redirected to. if it is a directory out of the web app root it is fine. No exceptions are being thrown. [AcceptVerbs(HttpVerbs.Post)] public ActionResult Create(int id, string path, FormCollection form) { ViewData["path"] = path; ViewData["id"] = id; HttpPostedFileBase hpf; string comment = form["FileComment"]; hpf = Request.Files["File"] as HttpPostedFileBase; if (hpf.ContentLength != 0) { DRS.Logic.Repository.Manager.CreateFile(path, hpf, comment); TempData["notification"] = "file was created"; return RedirectToRoute(new { controller = "File", action ="ViewDetails", id = id, path = path + Path.GetFileName(hpf.FileName) }); } else { TempData["notification"] = "No file were selected."; return View(); } }

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  • jqgrid not updating data on reload

    - by meepmeep
    I have a jqgrid with data loading from an xml stream (handled by django 1.1.1): jQuery(document).ready(function(){ jQuery("#list").jqGrid({ url:'/downtime/list_xml/', datatype: 'xml', mtype: 'GET', postData:{site:1,date_start:document.getElementById('datepicker_start').value,date_end:document.getElementById('datepicker_end').value}, colNames:[...], colModel :[...], pager: '#pager', rowNum: 25, rowList:[10,25,50], viewrecords: true, height: 500, caption: 'Click on column headers to reorder' }); $("#grid_reload").click(function(){ $("#list").trigger("reloadGrid"); }); $("#tabs").tabs(); $("#datepicker_start").datepicker({dateFormat: 'yy-mm-dd'}); $("#datepicker_end").datepicker({dateFormat: 'yy-mm-dd'}); ... And the html elements: <th>Start Date:</th> <td><input id="datepicker_start" type="text" value="2009-12-01"></input></td> <th>End Date:</th> <td><input id="datepicker_end" type="text" value="2009-12-03"></input></td> <td><input id="grid_reload" type="submit" value="load" /></td> When I click the grid_reload button, the grid reloads, but when it has done so it shows exactly the same data as before, even though the xml is tested to return different data for different timestamps. I have checked using alert(document.getElementById('datepicker_start').value) that the values in the date inputs are passed correctly when the reload event is triggered. Any ideas why the data doesn't update? A caching or browser issue perhaps?

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  • In Python epoll can I avoid the errno.EWOULDBLOCK, errno.EAGAIN ?

    - by davyzhang
    I wrote a epoll wrapper in python, It works fine but recently I found the performance is not not ideal for large package sending. I look down into the code and found there's actually a LOT of error Traceback (most recent call last): File "/Users/dawn/Documents/workspace/work/dev/server/sandbox/single_point/tcp_epoll.py", line 231, in send_now num_bytes = self.sock.send(self.response) error: [Errno 35] Resource temporarily unavailable and previously silent it as the document said, so my sending function was done this way: def send_now(self): '''send message at once''' st = time.time() times = 0 while self.response != '': try: num_bytes = self.sock.send(self.response) l.info('msg wrote %s %d : %r size %r',self.ip,self.port,self.response[:num_bytes],num_bytes) self.response = self.response[num_bytes:] except socket.error,e: if e[0] in (errno.EWOULDBLOCK,errno.EAGAIN): #here I printed it, but I silent it in normal days #print 'would block, again %r',tb.format_exc() break else: l.warning('%r %r socket error %r',self.ip,self.port,tb.format_exc()) #must break or cause dead loop break except: #other exceptions l.warning('%r %r msg write error %r',self.ip,self.port,tb.format_exc()) break times += 1 et = time.time() I googled it, and says it caused by temporarily network buffer run out So how can I manually and efficiently detect this error instead it goes to exception phase? Because it cause to much time to rasie/handle the exception.

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  • Annoying Twisted Python problem

    - by Kalmi
    I'm trying to answer the following question out of personal interest: What is the fastest way to send 100,000 HTTP requests in Python? And this is what I have came up so far, but I'm experiencing something very stange. When installSignalHandlers is True, it just hangs. I can see that the DelayedCall instances are in reactor._newTimedCalls, but processResponse never gets called. When installSignalHandlers is False, it throws an error and works. from twisted.internet import reactor from twisted.web.client import Agent from threading import Semaphore, Thread import time concurrent = 100 s = Semaphore(concurrent) reactor.suggestThreadPoolSize(concurrent) t=Thread( target=reactor.run, kwargs={'installSignalHandlers':True}) t.daemon=True t.start() agent = Agent(reactor) def processResponse(response,url): print response.code, url s.release() def processError(response,url): print "error", url s.release() def addTask(url): req = agent.request('HEAD', url) req.addCallback(processResponse, url) req.addErrback(processError, url) for url in open('urllist.txt'): addTask(url.strip()) s.acquire() while s._Semaphore__value!=concurrent: time.sleep(0.1) reactor.stop() And here is the error that it throws when installSignalHandlers is True: (Note: This is the expected behaviour! The question is why it doesn't work when installSignalHandlers is False.) Traceback (most recent call last): File "/usr/lib/python2.6/dist-packages/twisted/internet/base.py", line 396, in fireEvent DeferredList(beforeResults).addCallback(self._continueFiring) File "/usr/lib/python2.6/dist-packages/twisted/internet/defer.py", line 224, in addCallback callbackKeywords=kw) File "/usr/lib/python2.6/dist-packages/twisted/internet/defer.py", line 213, in addCallbacks self._runCallbacks() File "/usr/lib/python2.6/dist-packages/twisted/internet/defer.py", line 371, in _runCallbacks self.result = callback(self.result, *args, **kw) --- <exception caught here> --- File "/usr/lib/python2.6/dist-packages/twisted/internet/base.py", line 409, in _continueFiring callable(*args, **kwargs) File "/usr/lib/python2.6/dist-packages/twisted/internet/base.py", line 1165, in _reallyStartRunning self._handleSignals() File "/usr/lib/python2.6/dist-packages/twisted/internet/base.py", line 1105, in _handleSignals signal.signal(signal.SIGINT, self.sigInt) exceptions.ValueError: signal only works in main thread What am I doing wrong and what is the right way? I'm new to twisted.

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  • Oracle XMLDB's XMLCAST and XMLQUERY incompatible with iBatis?

    - by tthong
    I've been trying to select a list of values from XMLs stored in an XMLType column but I keep getting the errors which are listed at the tail end of this post. The select id is getXMLFragment , and the relevant subset of the sqlmap.xml is as follows: <select id="getXMLFragment" resultClass="list"> SELECT XMLCAST(XMLQUERY('$CUSTOMER/CUSTOMER/DETAILS/ CUST_NAME/text()' PASSING CUSTOMER AS "CUSTOMER" RETURNING CONTENT) AS VARCHAR2(20)) AS customers FROM SHOP.CLIENT_INFO </select> (CUSTOMER is an XMLType column in CLIENT_INFO) and I call the statement using List<String> custNames= (List<String>) sqlMap.queryForList("getXMLFragment"); I am using ibatis-2.3.4.726.jar. Is it because iBatis does not recognise XMLDB queries and hence, tokenizes the string wrongly? On a sidenote, I have implemented XMLTypeCallback.java to handle XMLType insertions successfully, and I think it will work should I wish to retrieve the entire XML. However, in this case, I need to extract only individual values due to requirements. A workaround would be greatly appreciated. Thanks in advance. The exceptions generated are listed below: --- The error occurred in sqlMap.xml. --- The error occurred while preparing the mapped statement for execution. --- Check the getXMLFragment. --- Check the SQL statement. --- Cause: java.util.NoSuchElementException at com.ibatis.sqlmap.engine.mapping.statement.MappedStatement.executeQueryWithCallback(MappedStatement.java: 204) at com.ibatis.sqlmap.engine.mapping.statement.MappedStatement.executeQueryForList(MappedStatement.java: 139) at com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.queryForList(SqlMapExecutorDelegate.java: 567) at com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.queryForList(SqlMapExecutorDelegate.java: 541) at com.ibatis.sqlmap.engine.impl.SqlMapSessionImpl.queryForList(SqlMapSessionImpl.java: 118) at com.ibatis.sqlmap.engine.impl.SqlMapSessionImpl.queryForList(SqlMapSessionImpl.java: 122) at com.ibatis.sqlmap.engine.impl.SqlMapClientImpl.queryForList(SqlMapClientImpl.java: 98) at Main.main(Main.java:60) Caused by: java.util.NoSuchElementException at java.util.StringTokenizer.nextToken(StringTokenizer.java:332) at com.ibatis.sqlmap.engine.mapping.sql.simple.SimpleDynamicSql.processDynamicElements(SimpleDynamicSql.java: 90) at com.ibatis.sqlmap.engine.mapping.sql.simple.SimpleDynamicSql.getSql(SimpleDynamicSql.java: 45) at com.ibatis.sqlmap.engine.mapping.statement.MappedStatement.executeQueryWithCallback(MappedStatement.java: 184) ... 7 more

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  • Soap Negotiation Exception with BasicHttpBinding

    - by kyliod
    I have a wcf client/server application that I'm trying to get deployed at a client location. I believe it's a cross-domain issue, as we've deployed it successfully on the same computer. I'm currently using basichttpbinding and a custombinding that just uses Soap1.2: if (!useBasic) { CustomBinding binding = new CustomBinding(); TextMessageEncodingBindingElement encoding = new TextMessageEncodingBindingElement(MessageVersion.Soap12, System.Text.Encoding.UTF8); HttpTransportBindingElement transport = new HttpTransportBindingElement(); transport.MaxReceivedMessageSize = BindingConstants.MaxStringContentLength; binding.Elements.Add(encoding); binding.Elements.Add(transport); return binding; } else { BasicHttpBinding binding = new BasicHttpBinding(); binding.MaxReceivedMessageSize = BindingConstants.MaxStringContentLength; return binding; } However the client tells me that they get an error "SOAP security negotiation with 'XXXXXXXXXXXX' for target 'XXXXXXXXXXX' failed. See inner exception for details." Now I haven't gotten the inner exceptions yet, but everything I research online tells me that BasicHttpBinding should fix this, however they tell me they are using BasicHttpBinding. Is this error possible with BasicHttpBinding like how I have mine set up above? Also, when I check my BasicHttpBinding.Security.Message.ClientCredentialType, it says UserName. Does this even matter if my Security.Mode is "None"? Thanks.

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  • php: how to return an HTTP 500 code on any error, no matter what

    - by Jake
    Hi guys. I'm writing an authentication script in PHP, to be called as an API, that needs to return 200 only in the case that it approves the request, and 403 (Forbidden) or 500 otherwise. The problem I'm running into is that php returns 200 in the case of error conditions, outputting the error as html instead. How can I make absolutely sure that php will return an HTTP 500 code unless I explicitly return the HTTP 200 or HTTP 403 myself? In other words, I want to turn any and all warning or error conditions into 500s, no exceptions, so that the default case is rejecting the authentication request, and the exception is approving it with a 200 code. I've fiddled with set_error_handler() and error_reporting(), but so far no luck. For example, if the code outputs something before I send the HTTP response code, PHP naturally reports that you can't modify header information after outputting anything. However, this is reported by PHP as a 200 response code with html explaining the problem. I need even this kind of thing to be turned into a 500 code. Is this possible in PHP? Or do I need to do this at a higher level like using mod_rewrite somehow? If that's the case, any idea how I'd set that up? Thanks for any help. Jake

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  • SQL Server 2005 and 'General network error'

    - by Mariusz
    I know there is a lot of information in the Internet about solving this problem, but it didn't help me. My Delphi application uses dbExpress controls to access the database and execute SQL queries. Once every couple of days, however, it stops working because the database connection fails. This happens on several different computers with different versions of Windows. MSSQL Server 2005 (version 9.0.4035) is installed on each of them. The above mentioned application executes queries every couple of seconds, and they are mainly insert commands. Every couple of days I get a series of exceptions like the following one: [DBNETLIB][ConnectionOpen (PreLoginHandshake()).]General network error. Check your network documentation. And then the SQL server becomes inaccessible until I restart it manually. The information I found in the Internet say that I should install some service packs, change some registry entries etc., but believe me, none of these helps and I don't know what else to do now. Could you please help me solve this problem? Any clues or ideas? I can give you some more information about the server or the application if necessary. Thank you very much in advance.

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  • How to Determine The Module a Particular Exception Class is Defined In

    - by doug
    Note: i edited my Q (in the title) so that it better reflects what i actually want to know. In the original title and in the text of my Q, i referred to the source of the thrown exception; what i meant, and what i should have referred to, as pointed out in one of the high-strung but otherwise helpful response below, is the module that the exception class is defined in. This is evidenced by the fact that, again, as pointed out in one of the answers below the answer to the original Q is that the exceptions were thrown from calls to cursor.execute and cursor.next, respectively--which of course, isn't the information you need to write the try/except block. For instance (the Q has nothing specifically to do with SQLite or the PySQLite module): from pysqlite2 import dbapi2 as SQ try: cursor.execute('CREATE TABLE pname (id INTEGER PRIMARY KEY, name VARCHARS(50)') except SQ.OperationalError: print("{0}, {1}".format("table already exists", "... 'CREATE' ignored")) # cursor.execute('SELECT * FROM pname') while 1: try: print(cursor.next()) except StopIteration: break # i let both snippets error out to see the exception thrown, then coded the try/finally blocks--but that didn't tell me anything about which module the exception class is defined. In my example, there's only a single imported module, but where there are many more, i am interested to know how an experienced pythonista identifies the exception source (search-the-docs-till-i-happen-to-find-it is my current method). [And yes i am aware there's a nearly identical question on SO--but for C# rather than python, plus if you read the author's edited version, you'll see he's got a different problem in mind.]

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