| 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 org.apache.lucene.util.Version; |
| |
| 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 |
| * @deprecated (4.4) |
| */ |
| @Deprecated |
| public class PositionFilterFactory extends TokenFilterFactory { |
| private final int positionIncrement; |
| |
| /** Creates a new PositionFilterFactory */ |
| public PositionFilterFactory(Map<String,String> args) { |
| super(args); |
| positionIncrement = getInt(args, "positionIncrement", 0); |
| if (!args.isEmpty()) { |
| throw new IllegalArgumentException("Unknown parameters: " + args); |
| } |
| if (luceneMatchVersion != null && luceneMatchVersion.onOrAfter(Version.LUCENE_4_4)) { |
| throw new IllegalArgumentException("PositionFilter is deprecated as of Lucene 4.4. You should either fix your code to not use it or use Lucene 4.3 version compatibility"); |
| } |
| } |
| |
| @Override |
| public PositionFilter create(TokenStream input) { |
| return new PositionFilter(input, positionIncrement); |
| } |
| } |
| |