[richfaces-issues] [JBoss JIRA] Created: (RF-4349) fileUpload problem - error message is not displayed

[Hrvoje Jo (JIRA)]

fileUpload problem - error message is not displayed
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                 Key: RF-4349
                 URL: https://jira.jboss.org/jira/browse/RF-4349
             Project: RichFaces
          Issue Type: Bug
    Affects Versions: 3.2.1
         Environment: jsf, a4j
            Reporter: Hrvoje Jo


Hi!

I would like to know is there a way to stop fileUploadListener (fileUpload component) and diplay error message?

E.g.
I would like to upload file only if file with sam name doesn't egsist on server. It would be nice if the validation would be on client side. So I tried to do validation inside of fileUploadListener, but the message (<rich:messages />) is not shown, although the upload is stopped, and message is added.

Is this a bug, or am I doing something wrong? Here is the code 

public void processUpload(UploadEvent event) {
				
		UploadItem item = event.getUploadItem();
		java.io.File f = item.getFile();
		
		fileList = getFiles();		
		for (File file : fileList) {
			if(item.getFileName().equals(file.getName())){
                               FacesContext ctx = FacesContext.getCurrentInstance();
                                //Show message
		              ctx.addMessage(null, new FacesMessage(FacesMessage.SEVERITY_ERROR, 
                                             "error", "error"));

				
				ctx.renderResponse();
				return;
			}
		}
                //If file doesn't egsists...
		...	


There is a post on forum
http://www.jboss.com/index.html?module=bb&op=viewtopic&t=141559&start=0&postdays=postDays&postorder=postOrder&highlight=highlight


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