xml-dev - Re: SAX2: Parser interface (fragments)

[Stefan Haustein <stefan.haustein@trantor.de>]

> Any chance of adding parseFragment?  It could come in
> real handy for applications that primarily deals with
> fragments instead of documents.

In Java, I currently use a special reader that adds an additional root
element to the stream (see below). My life would become much easier if I
could tell the parser that it is reading a fragment (without root
element) only...

Vector streams = new Vector ();

streams.add (new ByteArrayInputStream ("<root>".getBytes ()));
streams.add (new FileInputStream (new File (path, "changes.log")));
streams.add (new ByteArrayInputStream ("</root>".getBytes ()));
                
parser.parse (new InputSource
              (new SequenceInputStream (streams.elements ())));

I have another fragment-related problem:

Imagine I have an xml parser for a particular type of content. Now, I
want to send this type of content, and for sending it is included in a
kind of "xml envelope". 

e.g.
<envelope>
  <sender>agent1</sender>
  <receiver>agent2</receiver>
  <content>
     <someRealContent/>
  </content>
</envelope>

Currently, the envelope handler delegates all content related events to
the content handler.  

It would be much nicer if I could switch the DocumentHandler by calling
"setDocumentHandler", and the documentHandler would switch back
automatically when back at the corresponding nesting level.  However,
the suggested semantics requires maintenance of a stack of
DocumentHandlers in the parser.

Best regards
 
Stefan

-- 
KJAVA AWT project: www.trantor.de/kawt
SAX-based access to WBXML and WML: www.trantor.de/wbxml

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