基于Solr 4.0正式版的IKAnalyzer分词库修改
Solr 4.0发布了,不过最新的IK分词还不支持,急着用,只能是自己修改了。
IKAnalyzer.java
/** * IK 中文分词 版本 5.0 * IK Analyzer release 5.0 * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * 源代码由林良益([email protected])提供 * 版权声明 2012,乌龙茶工作室 * provided by Linliangyi and copyright 2012 by Oolong studio * */ package org.wltea.analyzer.lucene; import java.io.IOException; import java.io.Reader; import org.apache.lucene.analysis.Analyzer; import org.apache.lucene.analysis.TokenStream; import org.apache.lucene.analysis.Tokenizer; /** * IK分词器,Lucene Analyzer接口实现 兼容Lucene 3.1以上版本 */ public final class IKAnalyzer extends Analyzer { private boolean isMaxWordLength = false; /** * IK分词器Lucene Analyzer接口实现类 默认最细粒度切分算法 */ public IKAnalyzer() { this(false); } /** * IK分词器Lucene Analyzer接口实现类 * * @param isMaxWordLength * 当为true时,分词器进行最大词长切分 */ public IKAnalyzer(boolean isMaxWordLength) { super(); this.setMaxWordLength(isMaxWordLength); } @Override public TokenStreamComponents createComponents(String fieldName, Reader reader) { Tokenizer tokenizer = new IKTokenizer(reader, isMaxWordLength()); return new TokenStreamComponents(tokenizer, null); } public void setMaxWordLength(boolean isMaxWordLength) { this.isMaxWordLength = isMaxWordLength; } public boolean isMaxWordLength() { return isMaxWordLength; } }
IKTokenizer.java
/**
* IK 中文分词 版本 5.0
* IK Analyzer release 5.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* 源代码由林良益([email protected])提供
* 版权声明 2012,乌龙茶工作室
* provided by Linliangyi and copyright 2012 by Oolong studio
*
*
*/
package org.wltea.analyzer.lucene;
import java.io.IOException;
import java.io.Reader;
import org.apache.lucene.analysis.Tokenizer;
import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
import org.apache.lucene.analysis.tokenattributes.OffsetAttribute;
import org.wltea.analyzer.core.IKSegmenter;
import org.wltea.analyzer.core.Lexeme;
/**
* IK分词器 Lucene Tokenizer适配器类 兼容Lucene 3.1以上版本
*/
public final class IKTokenizer extends Tokenizer {
// IK分词器实现
private IKSegmenter _IKImplement;
// 词元文本属性
private CharTermAttribute termAtt;
// 词元位移属性
private OffsetAttribute offsetAtt;
// 记录最后一个词元的结束位置
private int finalOffset;
/**
* Lucene 3.5 Tokenizer适配器类构造函数
*
* @param in
* @param useSmart
*/
public IKTokenizer(Reader in, boolean useSmart) {
super(in);
offsetAtt = addAttribute(OffsetAttribute.class);
termAtt = addAttribute(CharTermAttribute.class);
_IKImplement = new IKSegmenter(in, useSmart);
}
@Override
public final void end() {
// set final offset
offsetAtt.setOffset(finalOffset, finalOffset);
}
}
IKTokenizerFactory.java
/**
* IK 中文分词 版本 5.0
* IK Analyzer release 5.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* 源代码由林良益([email protected])提供
* 版权声明 2012,乌龙茶工作室
* provided by Linliangyi and copyright 2012 by Oolong studio
*
*
*/
package org.wltea.analyzer.solr;
import java.io.Reader;
import java.util.Map;
import org.apache.lucene.analysis.Tokenizer;
import org.apache.lucene.analysis.util.TokenizerFactory;
import org.wltea.analyzer.lucene.IKTokenizer;
/**
* IK中文分词
* Solr分词器工厂实现
*
* 2012-3-6
*
*/
public class IKTokenizerFactory extends TokenizerFactory {
private boolean useSmart = false;
@Override
public void init(Map<String, String> params) {
super.init(params);
String useSmartParam = params.get("useSmart");
this.useSmart = (useSmartParam != null ? Boolean.parseBoolean(useSmartParam) : false);
}
}