System and method for querying XML streams
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United States of America Patent
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Jun 24, 2008
Grant Date -
Oct 14, 2004
app pub date -
Apr 14, 2003
filing date -
Apr 14, 2003
priority date (Note) -
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Abstract
A system and method for querying a stream of XML data in a single pass using standard XQuery expressions. The system comprises: an expression parser that receives a query and generates a parse tree; a SAX events API that receives the stream of XML data and generates a stream of SAX events; an evaluator that receives the parse tree and stream of SAX events and buffers fragments from the stream of SAX events that meet an evaluation criteria; and a tuple constructor that joins fragments to form a set of tuple results that satisfies the query for the stream of XML data.
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