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/*
* 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.Analyzer;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.document.Fieldable;
import org.elasticsearch.common.util.concurrent.Immutable;
import java.io.IOException;
import java.io.Reader;
/**
* Named analyzer is an analyzer wrapper around an actual analyzer ({@link #analyzer} that is associated
* with a name ({@link #name()}.
*
* @author kimchy (shay.banon)
*/
@Immutable
public class NamedAnalyzer extends Analyzer {
private final String name;
private final AnalyzerScope scope;
private final Analyzer analyzer;
public NamedAnalyzer(String name, Analyzer analyzer) {
this(name, AnalyzerScope.INDEX, analyzer);
}
public NamedAnalyzer(String name, AnalyzerScope scope, Analyzer analyzer) {
this.name = name;
this.scope = scope;
this.analyzer = analyzer;
}
/**
* The name of the analyzer.
*/
public String name() {
return this.name;
}
/**
* The scope of the analyzer.
*/
public AnalyzerScope scope() {
return this.scope;
}
/**
* The actual analyzer.
*/
public Analyzer analyzer() {
return this.analyzer;
}
@Override public TokenStream tokenStream(String fieldName, Reader reader) {
return analyzer.tokenStream(fieldName, reader);
}
@Override public TokenStream reusableTokenStream(String fieldName, Reader reader) throws IOException {
return analyzer.reusableTokenStream(fieldName, reader);
}
@Override public int getPositionIncrementGap(String fieldName) {
return analyzer.getPositionIncrementGap(fieldName);
}
@Override public int getOffsetGap(Fieldable field) {
return analyzer.getOffsetGap(field);
}
@Override public void close() {
analyzer.close();
}
@Override public String toString() {
return "analyzer name[" + name + "], analyzer [" + analyzer + "]";
}
}