/*
 * Licensed to Elastic Search and Shay Banon under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. Elastic Search 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.elasticsearch.index.analysis;

import org.apache.lucene.analysis.StopAnalyzer;
import org.apache.lucene.analysis.StopFilter;
import org.apache.lucene.analysis.TokenStream;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.inject.assistedinject.Assisted;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.env.Environment;
import org.elasticsearch.index.Index;
import org.elasticsearch.index.settings.IndexSettings;

import java.util.Set;

/**
 * @author kimchy (Shay Banon)
 */
public class StopTokenFilterFactory extends AbstractTokenFilterFactory {

    private final Set<?> stopWords;

    private final boolean ignoreCase;

    @Inject public StopTokenFilterFactory(Index index, @IndexSettings Settings indexSettings, Environment env, @Assisted String name, @Assisted Settings settings) {
        super(index, indexSettings, name, settings);
        this.stopWords = Analysis.parseStopWords(env, settings, StopAnalyzer.ENGLISH_STOP_WORDS_SET);
        this.ignoreCase = settings.getAsBoolean("ignore_case", false);
    }

    @Override public TokenStream create(TokenStream tokenStream) {
        return new StopFilter(version, tokenStream, stopWords, ignoreCase);
    }

    public Set<?> stopWords() {
        return stopWords;
    }

    public boolean ignoreCase() {
        return ignoreCase;
    }
}

@@ -986,16 +986,55 @@
 Stream;%0A
+import org.apache.lucene.util.Version;%0A
 import o
@@ -1535,16 +1535,69 @@
 eCase;%0A%0A
+    private final boolean enablePositionIncrements;%0A%0A
     @Inj
@@ -1975,24 +1975,155 @@
 e%22, false);%0A
+        this.enablePositionIncrements = settings.getAsBoolean(%22enable_position_increments%22, version.onOrAfter(Version.LUCENE_29));%0A
     %7D%0A%0A    @
@@ -2192,22 +2192,35 @@
         
-return
+StopFilter filter =
  new Sto
@@ -2269,24 +2269,117 @@
 gnoreCase);%0A
+        filter.setEnablePositionIncrements(enablePositionIncrements);%0A        return filter;%0A
     %7D%0A%0A    p
@@ -2504,11 +2504,112 @@
 e;%0A    %7D
+%0A%0A    public boolean enablePositionIncrements() %7B%0A        return this.enablePositionIncrements;%0A    %7D
 %0A%7D%0A

Stop Token Filter - enable_position_increments, closes #1182.