FileUpload UI element ...

Question

Hi guys,
I have placed FileUpload UI element into a FileUploadView and binded it to context attributes PdfSource (binary type) and PdfName (string type). Also I have placed a button into the view. Folowing code should be executed after selecting some PDF file and clicking on the button:
public void onActionShowFormPressed(com.sap.tc.webdynpro.progmodel.api.IWDCustomEvent wdEvent )
    //@@begin onActionShowFormPressed(ServerEvent)
     wdThis.wdGetUploadDownloadInteractiveFormCompController().wdGetContext().currentContextElement().setPdfSource(wdContext.currentContextElement().getPdfSource());
     //wdThis.wdFirePlugToFormView();   
     byte[] content = wdContext.currentContextElement().getPdfSource();
                     String name = wdContext.currentContextElement().getPdfName();
The "name" variable contains the real name of uploaded file. It's right. But the "content" variable contains array of zero size.
Do you have any idea why?
Thaks a lot in advance!
Regards
Zbynek

Answer 1

Hi
Try binding the Resource property of File Upload UI element to 'Resource' under Java Native Type. Once the file is browsed using the Browse button, ask user to click a button say Attach where it would upload to the Web Dynpro context by server round trip. So no coding required.
Now you can get the File name and Resource type using:
String file Name = wdContext.currentContextElement().getVa_Resource().getResourceName();
String resType = wdContext.currentContextElement().getVa_Resource().getResourceType();
The data property is bound to an attribute whose value would not denote the data in the file but would be used to store some property of the same file. Say, in case you need to store the name of the file then you can get it from the resource and set it there so that next time if somebody is trying to access the same file, the file name can be retrieved direcly from the attribute bound to data. That is why when you try printing the length of the byte array it would be always zero rather than what you expected.
Regards,
Tushar Sinha