Sources and Results

The Source and Result interfaces abstract out the API dependent details of exactly how an XML document is represented. You can construct sources from DOM nodes, SAX event sequences, and raw streams. You can target the result of a transform at a DOM Node, a SAX ContentHandler, or a stream-based target such as an OutputStream, Writer, File, or String. Other models may also provide their own implementations of these interfaces. For instance, JDOM has an org.jdom.transform package that includes a JDOMSource and JDOMResult class.

In fact, these different models have very little in common, other than that they all hold an XML document. Consequently, the Source and Result interfaces don’t themselves provide a lot of the functionality you need, just methods to get the system and public ID of the document. Everything else is deferred to the implementations.

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Copyright 2000-2003 Elliotte Rusty Harold
Last Modified January 13, 2003