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    <p>To perform some operations on specific phases of upload, you can attach to an event of rich:fileUpload. Along with standard events, rich:fileUpload provides a number of specific events:</p> <ul> <li>The "onadd" event handler called on an add file operation</li> <li>The "onupload" which gives you a possibility to cancel the upload at client side</li> <li>The "onuploadcomplete" which is called after all files from the list are uploaded</li> <li>The "onuploadcanceled" which is called after upload has been canceled via cancel control</li> <li>The "onerror" which is called if the file upload was interrupted according to any errors</li> </ul> <p>To invoke server side logic using AJAX when event occurs, use 'a4j:status' or 'a4j:jsFunction', for example using 'a4j:status':</p> <pre><code>&lt;rich:fileUpload yourParameters="..."&gt; &lt;a4j:support event="onuploadcomplete" reRender="something" action="#{fileUploadController.setImageFormat(imageFormat)}"/&gt; &lt;/rich:fileUpload&gt; </code></pre> <p>and using 'a4j:jsFunction' (also demonstrated how to use setPropertyActionListener, it is for case if your EL resolver does not support method invocations with parameters (refer to BalusC comment))</p> <pre><code>&lt;rich:fileUpload onupload="setImageFormat();" yourParameters="..."&gt;&lt;/rich:fileUpload&gt; &lt;a4j:jsFunction name="setImageFormat"&gt; &lt;f:setPropertyActionListener value="#{imageFormat}" target="#{fileUploadController.imageFormat}"/&gt; &lt;/a4j:jsFunction&gt; </code></pre>
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    1. COInvoking non-getter methods with arguments in EL is not supported prior EL 2.2. And since OP is using JSF 1.2, I doubt that he is running an EL 2.2 capable container (EL 2.2 is part of Java EE 6 which in turn offers JSF 2.0).
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    2. CO@BalusC Regarding methods with parameters invocation. I did not want to overload the answer with that details, just wanted to demonstrate the approach. It might work as is for Joerg, if he is using, for example, JBoss EL. If not in this particular case f:setPropertyActionListener is appropriate.
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    3. CO@Andrey thanks for you help - it works now!
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