Improve runtime of the Microformat extractor on documents with many relations.
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Key: ANY23-76
URL: https://issues.apache.org/jira/browse/ANY23-76
Project: Apache Any23
Issue Type: Improvement
Reporter: Timothy Potter
Priority: Trivial
For some large documents with many Microformat tuples the extensive use of
XPath in the DomUtils class cause Microformat extraction to be slow. I've
market this as trivial as it's a corner case.
To reproduce the problem the patch addresses, run the Microformat extractor on
the folloing url:
http://en.wikipedia.org/wiki/List_of_Nike_missile_locations
I include a patch that improves performance at the cost of code simplicity. I
hope someone who is more involved in the project can decide if it's a good idea
to use the patch or not, or maybe address this issue in another way.. The
patch replaces commonly used XPath queries with DOM tree traversals. Eg.
getting all nodes with 'class' attributes. On my machine the time to parse the
given document is reduced from around 105 seconds to 14 seconds.
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