/**
* 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.
*/
package org.apache.solr.analysis;
import org.apache.commons.codec.Encoder;
import org.apache.lucene.analysis.TokenFilter;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.Token;
import java.io.IOException;
/**
* Create tokens for phonetic matches. See:
* http://jakarta.apache.org/commons/codec/api-release/org/apache/commons/codec/language/package-summary.html
*
* @version $Id: PhoneticFilter.java 643465 2008-04-01 16:10:19Z gsingers $
*/
public class PhoneticFilter extends TokenFilter
{
protected boolean inject = true;
protected Encoder encoder = null;
protected String name = null;
protected Token save = null;
public PhoneticFilter(TokenStream in, Encoder encoder, String name, boolean inject) {
super(in);
this.encoder = encoder;
this.name = name;
this.inject = inject;
}
@Override
public final Token next(Token in) throws IOException {
if( save != null ) {
Token temp = save;
save = null;
return temp;
}
Token t = input.next(in);
if( t != null ) {
String value = new String(t.termBuffer(), 0, t.termLength());
try {
value = encoder.encode(value).toString();
}
catch (Exception ignored) {} // just use the direct text
//Token m = new Token(value, t.startOffset(), t.endOffset(), name );
if( inject ) {
save = (Token) t.clone();
save.setPositionIncrement(0);
save.setTermBuffer(value.toCharArray(), 0, value.length());
} else {
t.setTermBuffer(value.toCharArray(), 0, value.length());
}
}
return t;
}
}