Get attribute name from VO returns null.

Question

Hello,
I'm using JDeveloper 11.1.1.3. I have an af:inputfile component in which i set a ValueChangeListener. I'm using the attribute "Filename" from the form view to set the name of the file before saving it to a directory. At first, i had a different layout for my jspx page (very similar in design) and everything was working perfectly. When i redesigned the page, i'm now getting "null" as the filename. I'm not able to get the attribute! Although i didn't change anything in the code! I tried writing a simple method to output the attribute:
      public String justOutput(){
        BindingContainer bindings = BindingContext.getCurrent().getCurrentBindingsEntry();
        AttributeBinding attr = (AttributeBinding) bindings.getControlBinding("Filename");
        if (attr == null)
            return null;
        String filename = (String) attr.getInputValue();
        System.out.print(filename);
        return null;
      }It was able to output the attribute. But in my original method i'm getting "null".
******Another important observation*******
If i pressed upload another time at runtime and uploaded another file it works again!
Here is my code:
     public void uploadFile(ValueChangeEvent valueChangeEvent)  {
          InputStream in;
          FileOutputStream out;   
          ExternalContext context = FacesContext.getCurrentInstance().getExternalContext();
          String fileLoc = context.getInitParameter("DATA_DIR");                 
          UploadedFile file= (UploadedFile)valueChangeEvent.getNewValue();                           
          boolean exists = (new File(fileLoc)).exists();
          if(!exists){
            (new File(fileLoc)).mkdirs();
          if(file != null && file.getLength() > 0){
            FacesContext context2 = FacesContext.getCurrentInstance();
            FacesMessage message = new FacesMessage("File Uploaded" + file.getFilename() +
                                                    "(" + file.getLength() + "bytes)");
            //context2.addMessage(valueChangeEvent.getComponent().getClientId(context2), message);
            BindingContainer bindings = BindingContext.getCurrent().getCurrentBindingsEntry();
            AttributeBinding attr = (AttributeBinding) bindings.getControlBinding("Filename");
            if (attr == null)
                return;
            String filename = (String) attr.getInputValue();
            try {
                     out = new FileOutputStream("C:\\demos\\" + filename + ".pdf");
                     in = file.getInputStream();
                     for (int bytes=0; bytes < file.getLength(); bytes++) {
                         out.write(in.read());
                     in.close();
                     out.close();
                 } catch (IOException e) {
                 e.printStackTrace();
          else {
              String filename = file != null ? file.getFilename():null;
              String byteLength = file != null ? "" + file.getLength():"0";
      }I don't think the code is wrong because it worked before. But why is this happening?
Can anyone please help!?
Mohamed.

Answer 1

Sorry for the late reply Frank,
Thanks for your reply, no i didn't! But it worked when i set the 'autosubmit' property to true... Like you said:
the name field hasn't updated the model to the time you try and access itThanks again.
Mohamed