mirror of https://github.com/apache/lucene.git
Added per-field analysis capabilities
git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@150061 13f79535-47bb-0310-9956-ffa450edef68
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src
java/org/apache/lucene/analysis
test/org/apache/lucene/analysis
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package org.apache.lucene.analysis;
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/* ====================================================================
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* The Apache Software License, Version 1.1
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*
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* Copyright (c) 2001 The Apache Software Foundation. All rights
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* reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The end-user documentation included with the redistribution,
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* if any, must include the following acknowledgment:
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* "This product includes software developed by the
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* Apache Software Foundation (http://www.apache.org/)."
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* Alternately, this acknowledgment may appear in the software itself,
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* if and wherever such third-party acknowledgments normally appear.
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*
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* 4. The names "Apache" and "Apache Software Foundation" and
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* "Apache Lucene" must not be used to endorse or promote products
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* derived from this software without prior written permission. For
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* written permission, please contact apache@apache.org.
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*
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* 5. Products derived from this software may not be called "Apache",
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* "Apache Lucene", nor may "Apache" appear in their name, without
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* prior written permission of the Apache Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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*/
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import java.io.Reader;
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import java.util.Map;
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import java.util.HashMap;
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/**
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* This analyzer is used to facilitate scenarios where different
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* fields require different analysis techniques. Use {@link #addAnalyzer}
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* to add a non-default analyzer on a field name basis.
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* See {@link TestPerFieldAnalzyerWrapper} for example usage.
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*/
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public class PerFieldAnalyzerWrapper extends Analyzer {
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private Analyzer defaultAnalyzer;
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private Map analyzerMap = new HashMap();
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/**
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* Constructs with default analyzer.
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*
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* @param defaultAnalyzer Any fields not specifically
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* defined to use a different analyzer will use the one provided here.
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*/
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public PerFieldAnalyzerWrapper(Analyzer defaultAnalyzer) {
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this.defaultAnalyzer = defaultAnalyzer;
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}
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/**
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* Defines an analyzer to use for the specified field.
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*
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* @param fieldName field name requiring a non-default analyzer.
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* @param analyzer non-default analyzer to use for field
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*/
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public void addAnalyzer(String fieldName, Analyzer analyzer) {
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analyzerMap.put(fieldName, analyzer);
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}
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public TokenStream tokenStream(String fieldName, Reader reader) {
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Analyzer analyzer = (Analyzer) analyzerMap.get(fieldName);
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if (analyzer == null) {
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analyzer = defaultAnalyzer;
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}
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return analyzer.tokenStream(fieldName, reader);
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}
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}
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package org.apache.lucene.analysis;
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import junit.framework.TestCase;
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import java.io.StringReader;
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/* ====================================================================
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* The Apache Software License, Version 1.1
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*
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* Copyright (c) 2001 The Apache Software Foundation. All rights
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* reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
|
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The end-user documentation included with the redistribution,
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* if any, must include the following acknowledgment:
|
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* "This product includes software developed by the
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* Apache Software Foundation (http://www.apache.org/)."
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* Alternately, this acknowledgment may appear in the software itself,
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* if and wherever such third-party acknowledgments normally appear.
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*
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* 4. The names "Apache" and "Apache Software Foundation" and
|
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* "Apache Lucene" must not be used to endorse or promote products
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* derived from this software without prior written permission. For
|
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* written permission, please contact apache@apache.org.
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*
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* 5. Products derived from this software may not be called "Apache",
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* "Apache Lucene", nor may "Apache" appear in their name, without
|
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* prior written permission of the Apache Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
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* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
|
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
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* SUCH DAMAGE.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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*/
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public class TestPerFieldAnalzyerWrapper extends TestCase {
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public void testIt() throws Exception {
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String text = "Qwerty";
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PerFieldAnalyzerWrapper analyzer = new PerFieldAnalyzerWrapper(new WhitespaceAnalyzer());
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analyzer.addAnalyzer("special", new SimpleAnalyzer());
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TokenStream tokenStream = analyzer.tokenStream("field", new StringReader(text));
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Token token = tokenStream.next();
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assertEquals("WhitespaceAnalyzer does not lowercase", "Qwerty", token.termText());
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tokenStream = analyzer.tokenStream("special", new StringReader(text));
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token = tokenStream.next();
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assertEquals("SimpleAnalyzer lowercases", "qwerty", token.termText());
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}
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}
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