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POSetting bean properties from a thread
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copied!<p>I have a <code>@ViewScoped</code> bean that passes itself to a Thread object.</p> <pre><code>class SomeThread implements Runnable { private SomeBeanClass someBean; public SomeThread(SomeBeanClass someBean) { this.someBean = someBean; } public void run() { // do some calculations and set bean properties someBean.setProperty("blabla"); someBean.setLocked(false); } </code></pre> <p>This seems to work most of the times, but not very stable. In my view, I use PrimeFaces' <code>p:poll</code> to refresh a <code>h:inputTextarea</code> which displays the property I set in the thread. It works... sometimes. Sometimes I see no text at all, sometimes it only displays new text for the first poll.</p> <p>The boolean property I set in the thread doesn't seem to be up to date if I call an action method from my form while the thread is running (the thread set it to <code>false</code>, after that I invoke the action method from the form and <code>isLocked()</code> still returns <code>true</code>).</p> <p>Is there any more clever way to do this? Passing a bean to a thread seems wrong to me. But how else could I achieve this?</p> <p><strong>UPDATE</strong></p> <p>My goal is as follows: I want the user to be able to see changes made to some files that lie on a remote server (without refreshing). Basically, I want the user to see a <code>tail -f</code> of a remote file in an <code>inputTextarea</code>. (The connection to the remote server is done by the thread using SSH [Ganymed library]).</p> <p>So I put the <code>inputTextarea</code> in the form and refresh it using <code>p:poll</code>. I update the String that is bound to the <code>inputTextarea</code> in the thread (the user invokes the action that will start the thread using a <code>commandButton</code>. Also, I want the user to stop the <code>tail -f</code> via a <code>selectBooleanCheckbox</code>. So I put a condition in the <code>run()</code> method of the thread:</p> <pre><code>if(someBean.isFinished()) { // logout and break; } </code></pre> <p>The changes made to the <code>selectBooleanCheckbox</code> are reflected in the run method straight away because I used <code><f:ajax /></code> - but bean properties set from the run method are sometimes not "updated" right away.</p> <p>I'm using Tomcat 7.0.12, JSF 2 (MyFaces) and PrimeFaces 2.2.1</p>

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