Ivelin,
I'm trying to code your suggestions but I have problems and some doubts.
> 1) You can remove ArtistBean altogether
Done.
> 2) Store the empty id structure in a static file or local constant
Done.
> 3) Override the getForm() method in the action
Wouldn't it be enough to override the getFormModel() method?
Something like this:
protected Object getFormModel() {
//to load the XML model
Container DOMModel = null;
Source modelSrc = null;
//this parameter holds the name of the xml file with the empty XML
structure
String modelFileName = getParameters().getParameter("xmlform-model",
null);
if(modelFileName==null) return null;
try {
modelSrc = getSourceResolver().resolveURI(modelFileName);
DOMModel = new XMLDocumentContainer(new
StreamSource(modelSrc.getInputStream()));
return DOMModel;
}
catch ( Exception e) {
throw new CascadingRuntimeException( " Failed instantiating form
model ", e );
}
finally {
getSourceResolver().release(modelSrc);
}
}
> 4) Use the JXPath DOMContainer to load the xml file(constant)
I have used XMLDocumentContainer. I see there's a DocumentContainer but only
present in JXPath 1.1 alpha and the jar file is still not included in
Cocoon, so I used the soon to be deprecated mentioned.
Btw, how could I extract a DOMNode from the root or an XML String so I could
store the whole structure afterwards? I see in 1.1alpha I could do something
like 'DocumentContainer.MODEL_DOM' but I guess in 1.0 I should get a
JXPathContext and search for the root node so I can get the String I need.
Am I right?
> 5) Use the DOMContainer object as the Form model
Ok. But where should I store it? In a separate file like the ArtistBean I
got before?
Or maybe would be enough to declare it and initialize it in the getForm() or
getFormModel() method?
> 6) When you need to reference a node in the model, instead of using the
DOM
> API, you can directly use XPath,
> like this: getForm().getValue("/@id")
At this stage I can only see the form and when trying to access the model I
get the following exception: 'Cannot setValue of an object that is not some
other object's property/child'
Sorry about all the questions but this is totally new for me and it is not
easy.
Best.
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