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demo,contrib/swing,contrib/wikipedia,contrib/wordnet,contrib/xml-query-parser git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@834414 13f79535-47bb-0310-9956-ffa450edef68 |
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README.htm
<html> <body> <h1>XML based query syntax </h1> <p> This module contains: <ul> <li>a modular Lucene Query Parser where queries are expressed as XML</li> <li>JUnit test</li> <li>DTD schemas and <a href="docs/index.html">generated documentation</a> </li> <li>Example XML queries</li> <li>Test index (subset of Reuters 21578)</li> </ul> </p> <p> The original motivation for creating this package was outlined and discussed <a href="http://marc.theaimsgroup.com/?l=lucene-dev&m=113355526731460&w=2">here</a>. </p> <p> Parser support includes: <ul> <li>"Span" queries</li> <li>Simple caching for filters</li> <li>"Like this" queries</li> <li>Boolean, Term, and UserInput (parsed with existing query parser)</li> <li>BoostingQuery - a class that can downgrade scores for hits on certain terms rather than the hard-line approach taken by BooleanClause.Occurs.MUST_NOT</li> <li>FilteredQuery, RangeFilter, DuplicateFilter and "TermsFilter" for non-sequential terms</li> <li>"FuzzyLikeThis" a new query which is a cross between "LikeThis" and "fuzzy" but with better scoring of fuzzy terms than standard fuzzy queries</li> <li>A modular design with expandable support for new query/filter types</li> </ul> </p> <p>This code is dependent on the "queries" contrib module although the "CoreParser" can be compiled with just Lucene core if required</p> </body> </html>