Creating a Parser Controller

Using SAX2 to Manage Parsers

Building on Existing Tools Okay, SAX2 doesn't really exist yet, except in alpha. However, it does have some very attractive features for querying parsers to determine which options they support. Building on this foundation, XPDL could attempt to configure XML parsers to support the needs identified in the XPD, and report an exception if they don't.
Using a ParserFilter foundation For XPDL to provide the application with a complete picture of the information returned by the document, it needs to listen to the event stream. This approach complements the configuration phase.