Streaming API for XML
JSR-173, proposed by BEA Systems:
Two recently proposed JSRs, JAXB and JAX-RPC, highlight the need for an XML Streaming API. Both data binding and remote procedure calling (RPC) require processing of XML as a stream of events, where the current context of the XML defines subsequent processing of the XML. A streaming API makes this type of code much more natural to write than SAX, and much more efficient than DOM.
Develop APIs and conventions that allow a user to programmatically pull parse events from an XML input stream.
Develop APIs that allow a user to write events to an XML output stream.
Develop a set of objects and interfaces that encapsulate the information contained in an XML stream.
The specification should be easy to use, efficient, and not require a grammar. It should include support for namespaces, and associated XML constructs. The specification will make reasonable efforts to define APIs that are "pluggable".