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PORequestCycle goes null when using a separate thread
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  1. PORequestCycle goes null when using a separate thread
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    copied!<p>I am using a separate thread to handle the processing of a file. The main thread holds the table to display to the user using a listView, and uses an AjaxSelfUpdatingTimer to refresh the list every second. </p> <p>The problem is, after processing about 100 lines in my CSV file, I keep getting a no requestCyle exception:</p> <pre><code>Exception in thread "Thread-12" org.apache.wicket.WicketRuntimeException: No RequestCycle is currently set! at org.apache.wicket.Component.getRequest(Component.java:1804) at org.apache.wicket.markup.html.WebPage.dirty(WebPage.java:318) at org.apache.wicket.Page.dirty(Page.java:249) at org.apache.wicket.Page.componentStateChanging(Page.java:926) at org.apache.wicket.Component.addStateChange(Component.java:3528) at org.apache.wicket.Component.error(Component.java:1225) at com.wicket.BulkLoadPage$BatchLoaderProcessingThread.processLine(BulkLoadPage.java:806) at com.wicket.BulkLoadPage$BatchLoaderProcessingThread.run(BulkLoadPage.java:674) at java.lang.Thread.run(Thread.java:662) </code></pre> <p>these are my runnable classes the thread calls:</p> <pre><code>class BatchLoaderProcessingThread implements Runnable { @Override public void run() { processLine(); loaderFinished(); } public void cancelThread() { cancelLoaderThread = true; } } class BatchDeleteProcessingThread implements Runnable { @Override public void run() { processLine(); deleterFinished(); } public void cancelThread() { cancelDeleterThread = true; } } </code></pre> <p>I don't understand why the requestCycle would just go null.. How can I prevent this from happening?</p> <p>Edit:</p> <p>Commenting out feedback message do troubleshoot requestRecycle error, I receive this error:</p> <pre><code> java.io.IOException: Read error at java.io.FileInputStream.readBytes(Native Method) at java.io.FileInputStream.read(FileInputStream.java:220) at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:264) at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:306) at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:158) at java.io.InputStreamReader.read(InputStreamReader.java:167) at java.io.BufferedReader.read1(BufferedReader.java:185) at java.io.BufferedReader.read(BufferedReader.java:261) at java.io.BufferedReader.fill(BufferedReader.java:136) Dec 30 13:14:31 ERROR BulkLoadPage-java.io.IOException: Read error at java.io.BufferedReader.readLine(BufferedReader.java:299) at java.io.BufferedReader.readLine(BufferedReader.java:362) at au.com.bytecode.opencsv.CSVReader.getNextLine(CSVReader.java:266) at au.com.bytecode.opencsv.CSVReader.readNext(CSVReader.java:233) at com..wicket.BulkLoadPage.processLine(BulkLoadPage.java:547) at com..wicket.BulkLoadPage.access$0(BulkLoadPage.java:532) at com..wicket.BulkLoadPage$BatchLoaderProcessingThread.run(BulkLoadPage.java:1294) at java.lang.Thread.run(Thread.java:662) </code></pre> <p>this error only occurs with the larger file as well. All of the lines inside the csv are duplicate only to mimic a large file.. so all lines are the same, and there shouldn't be an error caused directly from the file. Is there something else that I should be looking for that would cause this error from using another thread?</p>
 

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