/*
* 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.Tokenizer;
import org.apache.lucene.analysis.path.PathHierarchyTokenizer;
import org.apache.lucene.analysis.path.ReversePathHierarchyTokenizer;
import org.elasticsearch.ElasticSearchIllegalArgumentException;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.inject.assistedinject.Assisted;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.index.Index;
import org.elasticsearch.index.settings.IndexSettings;
import java.io.Reader;
public class PathHierarchyTokenizerFactory extends AbstractTokenizerFactory {
private final int bufferSize;
private final char delimiter;
private final char replacement;
private final int skip;
private final boolean reverse;
@Inject public PathHierarchyTokenizerFactory(Index index, @IndexSettings Settings indexSettings, @Assisted String name, @Assisted Settings settings) {
super(index, indexSettings, name, settings);
bufferSize = settings.getAsInt("buffer_size", 1024);
String delimiter = settings.get("delimiter");
if (delimiter == null) {
this.delimiter = PathHierarchyTokenizer.DEFAULT_DELIMITER;
} else if (delimiter.length() > 1) {
throw new ElasticSearchIllegalArgumentException("delimiter can only be a one char value");
} else {
this.delimiter = delimiter.charAt(0);
}
String replacement = settings.get("replacement");
if (replacement == null) {
this.replacement = this.delimiter;
} else if (replacement.length() > 1) {
throw new ElasticSearchIllegalArgumentException("replacement can only be a one char value");
} else {
this.replacement = replacement.charAt(0);
}
this.skip = settings.getAsInt("skip", PathHierarchyTokenizer.DEFAULT_SKIP);
this.reverse = settings.getAsBoolean("reverse", false);
}
@Override public Tokenizer create(Reader reader) {
if (reverse) {
return new ReversePathHierarchyTokenizer(reader, bufferSize, delimiter, replacement, skip);
}
return new PathHierarchyTokenizer(reader, bufferSize, delimiter, replacement, skip);
}
}