package org.apache.lucene.analysis.position;
/*
* 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.
*/
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.position.PositionFilter;
import org.apache.lucene.analysis.util.TokenFilterFactory;
import java.util.Map;
/**
* Factory for {@link PositionFilter}.
* Set the positionIncrement of all tokens to the "positionIncrement", except the first return token which retains its
* original positionIncrement value. The default positionIncrement value is zero.
* <pre class="prettyprint" >
* <fieldType name="text_position" class="solr.TextField" positionIncrementGap="100">
* <analyzer>
* <tokenizer class="solr.WhitespaceTokenizerFactory"/>
* <filter class="solr.PositionFilterFactory" positionIncrement="0"/>
* </analyzer>
* </fieldType></pre>
*
*
* @see org.apache.lucene.analysis.position.PositionFilter
* @since solr 1.4
*/
public class PositionFilterFactory extends TokenFilterFactory {
private int positionIncrement;
@Override
public void init(Map<String, String> args) {
super.init(args);
positionIncrement = getInt("positionIncrement", 0);
}
public PositionFilter create(TokenStream input) {
return new PositionFilter(input, positionIncrement);
}
}