Efficient evaluation for diff of XML documents
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United States of America Patent
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Apr 23, 2013
Grant Date -
Oct 11, 2007
app pub date -
Apr 10, 2006
filing date -
Apr 10, 2006
priority date (Note) -
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Abstract
A technique for differencing XML documents is provided. An edit graph is generated for computing the cost of possible edits that may be applied to a first XML document in order to generate a second XML document. A hash value is assigned to nodes included in the axes of the edit graph, where one axis includes nodes in the first XML document and the other axis includes nodes in the second XML document. The hash value may be generated based on a particular node's name and attributes, and the hash value of the name and attributes of each child node of the particular node. A technique for patching an XML document is also provided. Events are generated for each node in the input document and for at least one operation specified in the edit script. The edit script is applied to the input document by performing one or more operations specified in the operation events on one or more node events.
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