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  • Why is my Lucene index getting locked?

    - by Andrew Bullock
    I had an issue with my search not return the results I expect. I tried to run Luke on my index, but it said it was locked and I needed to Force Unlock it (I'm not a Jedi/Sith though) I tried to delete the index folder and run my recreate-indicies application but the folder was locked. Using unlocker I've found that there are about 100 entries of w3wp.exe (same PID, different Handle) with a lock on the index. Whats going on? I'm doing this in my NHibernate configuration: c.SetListener(ListenerType.PostUpdate, new FullTextIndexEventListener()); c.SetListener(ListenerType.PostInsert, new FullTextIndexEventListener()); c.SetListener(ListenerType.PostDelete, new FullTextIndexEventListener()); And here is the only place i query the index: var fullTextSession = NHibernate.Search.Search.CreateFullTextSession(this.unitOfWork.Session); var fullTextQuery = fullTextSession.CreateFullTextQuery(query, typeof (Person)); fullTextQuery.SetMaxResults(100); return fullTextQuery.List<Person>(); Whats going on? What am i doing wrong? Thanks

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  • Making REST request using LWP::Simple

    - by Alienfluid
    I am trying to use LWP::Simple to make a GET request to a REST service. Here's the simple code: use LWP::Simple; $uri = "http://api.stackoverflow.com/0.8/questions/tagged/php"; $jsonresponse= get $uri; print $jsonresponse; On my local machine, running Ubuntu 10.4, and Perl version 5.10.1: farhan@farhan-lnx:~$ perl --version This is perl, v5.10.1 (*) built for x86_64-linux-gnu-thread-multi I can get the correct response and have it printed on the screen. E.g.: farhan@farhan-lnx:~$ head -10 output.txt { "total": 1000, "page": 1, "pagesize": 30, "questions": [ { "tags": [ "php", "arrays", "coding-style" (... snipped ...) But on my host's machine to which I SSH into, I get garbage printed on the screen for the same exact code. I am assuming it has something to do with the encoding, but the REST service does not return the character set type in the response, so how do I force LWP::Simple to use the correct encoding? Any ideas what may be going on here? Here's the version of Perl on my host's machine: [dredd]$ perl --version This is perl, v5.8.8 built for x86_64-linux-gnu-thread-multi

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  • Having a hard time implementing jquery serialScroll to a website. Need help!

    - by Martin Defatte
    Here's the page I am attempting to implement it on. www.yosoh.com/2010/advertising/beyond/ I have a custom script with figures out the width of all the images, adds it up, then sets the width of that page... I'd like to be able to set the arrows at the top to scroll to the next div (div.portfolioImage). I've followed Ariel Fischer's demo and documentation as best I can... but something keeps escaping me. I've finally gotten some "movement" on page load.. but to tell you the truth, I can't figure out if it's my html structure, css styles, or implementation of serialScroll causing the issue. here's the code for the buttons: <ul id="portfolioNav"> <li><a href="" id="prev">&larr;</a></li> <li><a href="" id="next">&rarr;</a></li> </ul> Here's the script, as it is right now: $('#mainContent').css('overflow', 'hidden'); $('#mainContent').serialScroll({ items:'.portfolioItem', prev:'a#prev', next:'a#next', axis: 'x', duration:1200, force:true, stop:true, lock:false, easing:'easeOutQuart', jump: true });

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  • How to print PDF on default network printer using GhostScript (gswin32c.exe) shell command

    - by Maciej
    I'd like to print PDF file(s) on windows' network printer via GhostScript. (I dont want to use Adobe Reader) I've read gswin32c.exe which can do the job. I experimented with many commands and coudn't find the way how to force gs to print PDF on my (windows default) network drive. I don't need point exact network printer- default can be used. But if there is no such option I'm happy to pass printer name as well. (I've tried with param -SDevice="\server_IP\printer_name" but this didnt work as well...) Command working under Windows cmd: gswin32c -dPrinted -dBATCH -dNOPAUSE -dNOSAFER -q -dNumCopies=1 -sDEVICE=ljet4 -sOutputFile="\\spool\\\Server_Name\Printer_name" "C:\test.pdf" Method created base on above - doesnt work and thorws exception. (Error code = 1) /// <summary> /// Prints the PDF. /// </summary> /// <param name="ghostScriptPath">The ghost script path. Eg "C:\Program Files\gs\gs8.71\bin\gswin32c.exe"</param> /// <param name="numberOfCopies">The number of copies.</param> /// <param name="printerName">Name of the printer. Eg \\server_name\printer_name</param> /// <param name="pdfFileName">Name of the PDF file.</param> /// <returns></returns> public bool PrintPDF (string ghostScriptPath, int numberOfCopies, string printerName, string pdfFileName) { ProcessStartInfo startInfo = new ProcessStartInfo(); startInfo.Arguments = " -dPrinted -dBATCH -dNOPAUSE -dNOSAFER -q -dNumCopies=" + Convert.ToString(numberOfCopies) + " -sDEVICE=ljet4 -sOutputFile=\"\\\\spool\\" + printerName + "\" \"" + pdfFileName + "\""; startInfo.FileName = ghostScriptPath; startInfo.UseShellExecute = false; Process process = Process.Start(startInfo); return process.ExitCode == 0; } Any idea how to make it working under C#?

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  • How to marshall non-string objects with JAXB and Spring

    - by lesula
    I was trying to follow this tutorial in order to create my own restful web-service using Spring framework. The client do a GET request to, let's say http://api.myapp/app/students and the server returns an xml version of the object classroom: @XmlRootElement(name = "class") public class Classroom { private String classId = null; private ArrayList<Student> students = null; public Classroom() { } public String getClassId() { return classId; } public void setClassId(String classId) { this.classId = classId; } @XmlElement(name="student") public ArrayList<Student> getStudents() { return students; } public void setStudents(ArrayList<Student> students) { this.students = students; } } The object Student is another bean containing only Strings. In my app-servlet.xml i copied this lines: <bean id="studentsView" class="org.springframework.web.servlet.view.xml.MarshallingView"> <constructor-arg ref="jaxbMarshaller" /> </bean> <!-- JAXB2 marshaller. Automagically turns beans into xml --> <bean id="jaxbMarshaller" class="org.springframework.oxm.jaxb.Jaxb2Marshaller"> <property name="classesToBeBound"> <list> <value>com.spring.datasource.Classroom</value> <value>com.spring.datasource.Student</value> </list> </property> </bean> Now my question is: what if i wanted to insert some non-string objects as class variables? Let's say i want a tag containing the String version of an InetAddress, such as <inetAddress>192.168.1.1</inetAddress> How can i force JAXB to call the method inetAddress.toString() in such a way that it appears as a String in the xml? In the returned xml non-string objects are ignored!

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  • Can't hit breakpoint in ASP.NET web app (Stop debugging in progress... popup in VS)

    - by dotnetdev
    Hi, I am trying to debug some code in my ASP.NET web app. I set a breakpoint in one of the page events of the page's codebehind, and this once came up with a special icon in place of the red breakpoint saying symbols have not been loaded and the breakpoint will not be hit. This error has not repeated itself but why can't I hit the breakpoint? Also, when I press stop, I get a popup in VS stating: Stop Debugging In Progres... Debugging is being stopped but is not yet complete. You can force debugging to stop completely, but any processes attached may terminate. This window will automatically close when debugging has completely stopped. Completely stop I also don't get the website appear in my browser either when starting to debug. :( To make things worse, I have a line of code like this in my page's codebehind: RssFeedSites = opml.Parse(filestream); I am putting the problematic breakpoint on this line. But I have a programatic breakpoint in the Parse() method of opml, but this does not get hit, either. Thanks

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  • Dynamically inserting an image with JavaScript does not work on images that 302 redirect

    - by Samuel Clay
    I am dynamically inserting an image into an HTML document using jQuery. Here is the code: var image_url = "http://www.kottke.org/plus/misc/images/castro-pitching.jpg"; var $image = $('<img src="'+image_url+'" width="50" height="50" />'); $('body').prepend($image); Notice that the image http://www.kottke.org/plus/misc/images/castro-pitching.jpg is actually a 302 redirect to http://kottkegae.appspot.com/images/castro-pitching.jpg. If you were to go to the original image in your browser, it works fine. If you were to load an HTML page with that image in an img tag, it would load fine. However, if you were to insert it dynamically using jQuery (or JavaScript, for that matter), the browser will not show the 302'ed image. If you show the redirected image, it would work fine. var image_url = "http://kottkegae.appspot.com/images/castro-pitching.jpg"; var $image2 = $('<img src="'+image_url+'" width="50" height="50" />'); $('body').prepend($image2); That's crazy, right? What gives and how can I force the image to load when inserted dynamically?

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  • Installing paperclip plugin

    - by mnml
    I'm trying to install the paperclip plugin with the following command: ruby script/plugin install git://github.com/thoughtbot/paperclip.git But I'm getting some errors: ruby script/plugin install git://github.com/thoughtbot/paperclip.git --force svn: '/home/app/vendor/plugins' is not a working copy /usr/lib/ruby/1.8/open-uri.rb:32:in `initialize': No such file or directory - git://github.com/thoughtbot/paperclip.git (Errno::ENOENT) from /usr/lib/ruby/1.8/open-uri.rb:32:in `open_uri_original_open' from /usr/lib/ruby/1.8/open-uri.rb:32:in `open' from ./script/../config/../vendor/rails/railties/lib/commands/plugin.rb:863:in `fetch_dir' from ./script/../config/../vendor/rails/railties/lib/commands/plugin.rb:857:in `fetch' from ./script/../config/../vendor/rails/railties/lib/commands/plugin.rb:856:in `each' from ./script/../config/../vendor/rails/railties/lib/commands/plugin.rb:856:in `fetch' from ./script/../config/../vendor/rails/railties/lib/commands/plugin.rb:219:in `install_using_http' from ./script/../config/../vendor/rails/railties/lib/commands/plugin.rb:169:in `send' from ./script/../config/../vendor/rails/railties/lib/commands/plugin.rb:169:in `install' from ./script/../config/../vendor/rails/railties/lib/commands/plugin.rb:734:in `parse!' from ./script/../config/../vendor/rails/railties/lib/commands/plugin.rb:732:in `each' from ./script/../config/../vendor/rails/railties/lib/commands/plugin.rb:732:in `parse!' from ./script/../config/../vendor/rails/railties/lib/commands/plugin.rb:447:in `parse!' from ./script/../config/../vendor/rails/railties/lib/commands/plugin.rb:463:in `parse!' from ./script/../config/../vendor/rails/railties/lib/commands/plugin.rb:871 from script/plugin:3:in `require' from script/plugin:3 Is it because I'm using a old rails version?

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  • How can I disable keep-alive on ASP.NET Web Service client requests?

    - by Matthew Brindley
    I have a few web servers behind an Amazon EC2 load balancer. I'm using TCP balancing on port 80 (rather than HTTP balancing). I have a client polling a Web Service (running on all web servers) for new items every few seconds. However, the client seems to stay connected to one server and polls that same server each time. I've tried using ServicePointManager to disable KeepAlive, but that didn't change anything. The outgoing connection still had its "connection: keep-alive" HTTP header, and the server kept the TCP connection open. I've also tried adding an override of GetWebRequest to the proxy class created by VS, which inherits from SoapHttpClientProtocol, but I still see the keep-alive header. If I kill the client's process and restart, it'll connect to a new server via the load balancer, but it'll continue polling that new server forever. Is there a way to force it to connect to a random server each time? I want the load from the one client to be spread across all of the web servers. The client is written in C# (as is the server) and uses a Web Reference (not a Service Reference), which points to the load balancer.

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  • Why does my REST request return garbage data?

    - by Alienfluid
    I am trying to use LWP::Simple to make a GET request to a REST service. Here's the simple code: use LWP::Simple; $uri = "http://api.stackoverflow.com/0.8/questions/tagged/php"; $jsonresponse= get $uri; print $jsonresponse; On my local machine, running Ubuntu 10.4, and Perl version 5.10.1: farhan@farhan-lnx:~$ perl --version This is perl, v5.10.1 (*) built for x86_64-linux-gnu-thread-multi I can get the correct response and have it printed on the screen. E.g.: farhan@farhan-lnx:~$ head -10 output.txt { "total": 1000, "page": 1, "pagesize": 30, "questions": [ { "tags": [ "php", "arrays", "coding-style" (... snipped ...) But on my host's machine to which I SSH into, I get garbage printed on the screen for the same exact code. I am assuming it has something to do with the encoding, but the REST service does not return the character set type in the response, so how do I force LWP::Simple to use the correct encoding? Any ideas what may be going on here? Here's the version of Perl on my host's machine: [dredd]$ perl --version This is perl, v5.8.8 built for x86_64-linux-gnu-thread-multi

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  • Remove In-App Purchase from free app and increase the price

    - by Arseniy Banayev
    The current version of an application in the App Store is free and has very limited functionality. An In-App Purchase unlocks everything else. I have decided to remove the In-App Purchase and just make the application cost the same price as the In-App Purchase did. But if I make the update now, then those users who have the free version but who have not yet paid for the In-App Purchase will get a free update into the full version. I have removed all traces of my singleton class, PurchaseManager, from the application, so that at this point, when I build/run it, all of the features are unlocked. At this point, how can I make sure that the free-version users don't just ride an update into the full version? Maybe there's a way to test whether the app is obtained through an update or through a purchase? That way, if it's through an update, I will see if it's the free version w/o the IAP and then force the user to purchase the IAP to continue playing. Any ideas?

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  • How to avoid an HttpException due to timeout

    - by Dan
    I'm working on a website powered by .NET asp/C# code. The clients require that sessions have a 25 minute timeout. However, sometimes the site is used, and a user stays connected for long periods of time (longer than 25 mins). Session_End is triggered: protected void Session_End(Object sender, EventArgs e) { Hashtable trackingInformaiton = (Hashtable)Application["trackingInformation"]; trackingInformaiton.Remove(Session["trackingID"]); } The user returns some time later, but when they interact with the website, they get an error, and we get this email notification: User: Unauthenticated User Error: System.Web.HttpException Description: Failed to load viewstate. The control tree into which viewstate is being loaded must match the control tree that was used to save viewstate during the previous request... The telling part of the stack trace is System.Web.UI.Control.AddedControl. Apparently, the server has thrown away the session data, and is sending new data, but the client is trying to deal with old data. Hence the error that "the control tree into which viewstate is being loaded [doesn't] match the control tree that was used to save the viewstate during the prevoius request." So here's the question. How can I force instruct the user's browser to redirect to a "you're logged out" screen when the connection times out? (Is it something I should add to the Session_End method?)

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  • How to determine if "html" or "body" scrolls the window.

    - by David Murdoch
    The code below is used to find the element that can be scrolled (body or html) via javascript. var scrollElement = (function (tags) { var el, $el, init; // iterate through the tags... while (el = tags.pop()) { $el = $(el); // if the scrollTop value is already > 0 then this element will work if ( $el.scrollTop() > 0){ return $el; } // if scrollTop is 0 try to scroll. else if($el.scrollTop( 1 ).scrollTop() > 0) { // if that worked reset the scroll top and return the element return $el.scrollTop(0); } } return $(); } (["html", "body"])); // do stuff with scrollElement...like: // scrollElement.animate({"scrollTop":target.offset().top},1000); This code works perfectly when the height of the document is greater than the height of the window. However, when the height of the document is the same or less than the window the method above will not work because scrollTop() will always be equal to 0. This becomes a problem if the DOM is updated and the height of the document grows beyond the height of the window after the code runs. Also, I generally don't wait until document.ready to set up my javascript handlers (this generally works). I could append a tall div to the body temporarily to force the method above to work BUT that would required the document to be ready in IE (you can't add a node to the body element before the tag is closed). For more reading on the document.ready "anti-pattern" topic read this. So, I'd love to find a solution that finds the scrollable element even when the document is short. Any ideas?

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  • How can I make an AdvancedDataGrid re-display its labels when the results of the labelFunction chang

    - by Chris R
    I have an AdvancedDataGrid with a custom label function whose value can change based on other form status (specifically, there's a drop down to choose the time display format for some columns). Right now, I have this labelFunction: internal function formatColumnTime(item: Object, column: AdvancedDataGridColumn): String { var seconds: Number = item[column.dataField]; return timeFormat.selectedItem.labelFunction(seconds); } internal function formatTimeAsInterval(time: Number): String { if (isNaN(time)) return ""; var integerTime: int = Math.round(time); var seconds: int = integerTime % 60; integerTime = integerTime / 60; var minutes: int = integerTime % 60; var hours: int = integerTime / 60; return printf("%02d:%02d:%02d", hours, minutes, seconds); } internal function formatTimeAsFractions(time: Number): String { if (isNaN(time)) return ""; var hours: Number = time / 3600.0; return new String(Math.round(hours * 100) / 100); } ... and the timeFormat object is a combo box with items whose labelFunction attributes are formatTimeAsFractions and formatTimeAsInterval. The columns that have time formats have formatColumnTime as their labelFunction value, because extracting the seconds in that function and passing it in to the formatters made for a more testable app (IMHO). So, when the timeFormat.selectedItem value changes, I want to force my grid to re-calculate the labels of these colums. What method must I call on it? invalidateProperties() didn't work, so that's out.

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  • How to use Object.GetHashCode() on a type that overrides GetHashCode()

    - by Jimmy
    Hi, I have a class A that implements IEquatable<, using its fields (say, A.b and A.c) for implementing/overriding Equals() and overriding GetHashCode(), and everything works fine, 99% of the time. Class A is part of a hierarchy (class B, C) that all inherit from interface D; they can all be stored together in a dictionary Dictionary, thus it's convenient when they all carry their own default Equals()/GetHashCode(). However, while constructing A I sometime need to do some work to get the values for A.b and A.c; while that's happening, I want to store a reference to the instance that's being built. In that case, I don't want to use the default Equals()/GetHashCode() overrides provided by A. Thus, I was thinking of implementing a ReferenceEqualityComparer, that's meant to force the use of Object's Equals()/GetHashCode(): private class ReferenceEqualityComparer<T> : IEqualityComparer<T> { #region IEqualityComparer<T> Members public bool Equals(T x, T y) { return System.Object.ReferenceEquals(x, y); } public int GetHashCode(T obj) { // what goes here? I want to do something like System.Object.GetHashCode(obj); } #endregion } The question is, since A overrides Object.GetHashCode(), how can I (outside of A) call Object.GetHashCode() for an instance of A? One way of course would be for A to not implement IEquatable< and always supply an IEqualityComparer< to any dictionary that I create, but I'm hoping for a different answer. Thanks

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  • How can I improve my real-time behavior in multi-threaded app using pthreads and condition variables

    - by WilliamKF
    I have a multi-threaded application that is using pthreads. I have a mutex() lock and condition variables(). There are two threads, one thread is producing data for the second thread, a worker, which is trying to process the produced data in a real time fashion such that one chuck is processed as close to the elapsing of a fixed time period as possible. This works pretty well, however, occasionally when the producer thread releases the condition upon which the worker is waiting, a delay of up to almost a whole second is seen before the worker thread gets control and executes again. I know this because right before the producer releases the condition upon which the worker is waiting, it does a chuck of processing for the worker if it is time to process another chuck, then immediately upon receiving the condition in the worker thread, it also does a chuck of processing if it is time to process another chuck. In this later case, I am seeing that I am late processing the chuck many times. I'd like to eliminate this lost efficiency and do what I can to keep the chucks ticking away as close to possible to the desired frequency. Is there anything I can do to reduce the delay between the release condition from the producer and the detection that that condition is released such that the worker resumes processing? For example, would it help for the producer to call something to force itself to be context switched out? Bottom line is the worker has to wait each time it asks the producer to create work for itself so that the producer can muck with the worker's data structures before telling the worker it is ready to run in parallel again. This period of exclusive access by the producer is meant to be short, but during this period, I am also checking for real-time work to be done by the producer on behalf of the worker while the producer has exclusive access. Somehow my hand off back to running in parallel again results in significant delay occasionally that I would like to avoid. Please suggest how this might be best accomplished.

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  • Automatically Sizing UIView after Adding to Window

    - by Kristopher Johnson
    I have an iPad app that switches between different views in its main window. The view-switching code looks like this: - (void)switchToViewController:(UIViewController*)viewController { if (currentViewController != viewController) { [currentViewController.view removeFromSuperview]; currentViewController = viewController; [window addSubview:viewController.view]; } } The problem is that when the new view (a UISplitView) appears in landscape orientation, it is not sized to fill the entire window. There is an empty black space on the right. If I rotate the device and then rotate back, the view sizes itself properly. If the device is in portrait orientation, everything works fine. The UISplitView also gets sized properly if it is the first view I show. The problem only occurs if I switch to it after another view has been shown, in landscape. So, is there some way to force iPhone OS to resize the view after it has been added to the window? I've tried calling sizeToFit, but it didn't work. I've also tried setting the view's bounds to the window's bounds, and I've tried setting the frame.

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  • How can I get PowerShell Added-Types to use Added References

    - by Scott Weinstein
    I'm working on a PoSh project that generates CSharp code, and then Add-Types it into memory. The new types use existing types in an on disk DLL, which is loaded via Add-Type. All is well and good untill I actualy try to invoke methods on the new types. Here's an example of what I'm doing: $PWD = "." rm -Force $PWD\TestClassOne* $code = " namespace TEST{ public class TestClassOne { public int DoNothing() { return 1; } } }" $code | Out-File tcone.cs Add-Type -OutputAssembly $PWD\TestClassOne.dll -OutputType Library -Path $PWD\tcone.cs Add-Type -Path $PWD\TestClassOne.dll $a = New-Object TEST.TestClassOne "Using TestClassOne" $a.DoNothing() "Compiling TestClassTwo" Add-Type -Language CSharpVersion3 -TypeDefinition " namespace TEST{ public class TestClassTwo { public int CallTestClassOne() { var a = new TEST.TestClassOne(); return a.DoNothing(); } } }" -ReferencedAssemblies $PWD\TestClassOne.dll "OK" $b = New-Object TEST.TestClassTwo "Using TestClassTwo" $b.CallTestClassOne() Running the above script gives the following error on the last line: Exception calling "CallTestClassOne" with "0" argument(s): "Could not load file or assembly 'TestClassOne,...' or one of its dependencies. The system cannot find the file specified." At AddTypeTest.ps1:39 char:20 + $b.CallTestClassOne <<<< () + CategoryInfo : NotSpecified: (:) [], MethodInvocationException + FullyQualifiedErrorId : DotNetMethodException What am I doing wrong?

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  • android checkbox box issue

    - by raqz
    i have this check box in a alertdialog. when i try to check the state of the checkbox, the application force closes. any idea why? LayoutInflater factory = LayoutInflater.from(NewActivity.this); final View textDisplayView = factory.inflate(R.layout.nearestlocs, null); final AlertDialog.Builder newAlert = new AlertDialog.Builder(NewActivity.this); newAlert.setView(textDisplayView); final CheckBox checkBoxLab = (CheckBox) findViewById(R.id.checkboxlab); newAlert.setPositiveButton("Display on Map", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { if(checkBoxLab.isChecked()){ libDisplayFlag = true; } error log 03-13 08:01:58.273: ERROR/AndroidRuntime(6188): Uncaught handler: thread main exiting due to uncaught exception 03-13 08:01:58.292: ERROR/AndroidRuntime(6188): java.lang.NullPointerException 03-13 08:01:58.292: ERROR/AndroidRuntime(6188): at com.isproj3.NewActivity$3.onClick(NewActivity.java:158) 03-13 08:01:58.292: ERROR/AndroidRuntime(6188): at com.android.internal.app.AlertController$ButtonHandler.handleMessage(AlertController.java:158) 03-13 08:01:58.292: ERROR/AndroidRuntime(6188): at android.os.Handler.dispatchMessage(Handler.java:99) xml <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <LinearLayout android:orientation="horizontal" android:gravity="center" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_weight="1"> <CheckBox android:id="@+id/checkboxlib" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Library" android:gravity="left" android:textColor="#FF0000" android:paddingBottom="5px" android:textSize="07pt" android:checked="true" /> <TextView android:id="@+id/librarytext" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="center" android:paddingBottom="5px" android:textSize="8pt" /> </LinearLayout> </LinearLayout>

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  • C# using consts in static classes

    - by NickLarsen
    I was plugging away on an open source project this past weekend when I ran into a bit of code that confused me to look up the usage in the C# specification. The code in questions is as follows: internal static class SomeStaticClass { private const int CommonlyUsedValue = 42; internal static string UseCommonlyUsedValue(...) { // some code value = CommonlyUsedValue + ...; return value.ToString(); } } I was caught off guard because this appears to be a non static field being used by a static function which some how compiled just fine in a static class! The specification states (§10.4): A constant-declaration may include a set of attributes (§17), a new modifier (§10.3.4), and a valid combination of the four access modifiers (§10.3.5). The attributes and modifiers apply to all of the members declared by the constant-declaration. Even though constants are considered static members, a constant-declaration neither requires nor allows a static modifier. It is an error for the same modifier to appear multiple times in a constant declaration. So now it makes a little more sense because constants are considered static members, but the rest of the sentence is a bit surprising to me. Why is it that a constant-declaration neither requires nor allows a static modifier? Admittedly I did not know the spec well enough for this to immediately make sense in the first place, but why was the decision made to not force constants to use the static modifier if they are considered constants? Looking at the last sentence in that paragraph, I cannot figure out if it is regarding the previous statement directly and there is some implicit static modifier on constants to begin with, or if it stands on its own as another rule for constants. Can anyone help me clear this up?

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  • Linux C/C++ : How to reload dynamic modules?

    - by Arman
    Hi, Are there way to reload dynamic library? I am loading module by dlopen library: bool load_functions(){ std::string function_name="libfunction-factory.so"; void* handle = dlopen(function_name.c_str(), RTLD_NOW); //some initialization and usage // ''' // unload the library dlclose(handle); return true; } int main() { int i=0; for(;;) { cout<<"##prompt##"<<i++<<">"; if(std::cin.get()=='q') break; else { if(!load_functions()) std::cout<<"Failed to load Function Factory..."<<std::endl; } cout<<endl; } return 0; } after running I am editing library and trying to reload the library, but the new library does not load. Always the first loaded library is used. Are there way to force to reload library? Why dlclose does not unload library? Kind regards Arman.

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  • Archive log transfer from Oracle 9i to Oracle 10g

    - by Jamie Love
    Hi all, I have a situation where I need to transfer Oracle 9i archive logs to an Oracle 10g database, from where they are to be mined by a log-miner and then used by an Oracle streams capture/apply processes. (Oracle 9 archive logs can be read by the Oracle 10 logminer - I can manually copy the archive logs across, manually register them and have them mined, captured then applied). The difficulty is that the way Oracle does archive log transfer changed quite a bit between 9i and 10g and setting up the 9i database to transfer to the remote machine like so: log_archive_dest_state_2 = enable log_archive_dest_2 = "service=OTHERMACHINE arch optional" no longer works. I get this in the 9i logs: *** 2009-05-22 04:03:44.149 RFS network connection lost at host 'OTHERMACHINE' Error 3113 attaching RFS server to standby instance at host 'OTHERMACHINE' Error 3113 attaching to destination LOG_ARCHIVE_DEST_2 standby host 'OTHERMACHINE' Heartbeat failed to connect to standby 'OTHERMACHINE'. Error is 3113. *** 2009-05-22 04:03:44.150 kcrrfail: dest:2 err:3113 force:0 ORA-03113: end-of-file on communication channel And in the 10g log I get: Fri May 22 04:07:42 2009 WARNING: inbound connection timed out (ORA-3136) My question is: Does anyone know how I could configure my 9i or 10g server such that the 10g server will accept the 9i connection in such a way that I can transfer the 9i archive logs to the 10g server. It would be a bonus if the archive logs would be automatically registered in the 10g server. Note I have not set up a full DataGuard configuration here and the 10g database is not a secondary server. Thanks for any suggestions. Edit Note that I can log on to the 10g server from the 9i server via sqlplus, so connectivity is not the problem Edit 2 After a large amount of time searching for a solution, I've finally decided that such a mechanism doesn't work, and that a non-Oracle method of transferring archive logs from 9i to 10g will need to be used (e.g. rsync).

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  • Facebook Graph API authentication in canvas app and track session

    - by cdpnet
    Short question is: how can i use graph api oauth redirects mechanism to authenticate user and save retrieved access_token and also use javascript SDK when needed (the problem is javascript SDK will have different access_token when initialized). I have initially setup my facebook iframe canvas app, with single sign on. This works well with graph api, as I am able to use access_token saved by facebook's javascript when it detects sessionchange(user logged in). But, I want to rather not do single sign-on. But, use graph api redirect and force user to send to a permissions dialog. But, if he has already given permissions, I shouldn't redirect user. How to handle this? Another question: I have done graph api redirects for authentication and have retrieved access_token also. But then, what if I want to use javascript call FB.ui to do stream.Publish? I think it will use it's own access_token which is set during FB.init and detecting session. So, I am looking for some path here. How to use graph api for authentication and also use facebook's javascript SDK when needed. P.S. I'm using ASP .NET MVC 2. I have an authentication filter developed, which needs to detect the user's authentication state and redirect.(currently it does this to graph api authorize url)

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  • WinForms databind to collection property (such as count)

    - by Ornus
    I want to databind to a collection property, such as Count. in general, when I data bind I specify data member for the object property in the collection, not for the actual properties collection itself exposes. for example, I have a list of custom objects. I show them in datagridview. but I also want to show their total count using a separate label. is there a way to do this through databinding? I imagine that somehow I need to force PropertyManager to be used, instead of CurrentyManager? I get the following exception. Notice that DataSource is collection and has TotalValue property. System.ArgumentException: Cannot bind to the property or column TotalValue on the DataSource. Parameter name: dataMember at System.Windows.Forms.BindToObject.CheckBinding() at System.Windows.Forms.Binding.SetListManager(BindingManagerBase bindingManagerBase) at System.Windows.Forms.ListManagerBindingsCollection.AddCore(Binding dataBinding) at System.Windows.Forms.BindingsCollection.Add(Binding binding) at System.Windows.Forms.BindingContext.UpdateBinding(BindingContext newBindingContext, Binding binding) at System.Windows.Forms.Binding.SetBindableComponent(IBindableComponent value) at System.Windows.Forms.ControlBindingsCollection.AddCore(Binding dataBinding) at System.Windows.Forms.BindingsCollection.Add(Binding binding)

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  • Difficulty with apps with a forced landscape orientation

    - by mahboudz
    I have two apps, both of which force the user to use the iPhone in landscape mode, in order to have a wider screen, instead of a taller one. One of the things I have found is that my first view will look fine, but all other views come up with their subviews (UIButtons, UIPicker, UIViews) squeezed to one side or clipped (depending on whether the elements were set to move, resize or stay in the same position as the view size changed). All my views are designed in IB in the landscape orientation. My underlying UIWindow, and everything I can think of has been laid out in landscape orientation. Even my plist file has the UIInterfaceOrientationLandscapeRight flag set. Now, if I load all my views at the same time as my rootview controller, then I have no problems. But if I have views loaded later, they get clipped or squeezed. The only way to get around the problem was to add the following line in my code that flips in a new view: [coming.view setFrame:CGRectMake(0, 0, 480, 300)]; Anyone know why I need to do this? Is it just that the iPhone assumes that loaded views are 300x480 unless a transform gets applied to them? Thanks. ps. This is what the view looks like if I don't call setFrame, as described above: All viewcontrollers that get loaded after the first one will have their screen similarly squeezed down. For some reason the first viewcontroller doesn't have this issue.

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