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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.core.internal.io.IOUtils;
import org.elasticsearch.index.AbstractIndexComponent;
import org.elasticsearch.index.IndexSettings;
import java.io.Closeable;
import java.io.IOException;
import java.util.Map;
import java.util.stream.Stream;
/**
* IndexAnalyzers contains a name to analyzer mapping for a specific index.
* This class only holds analyzers that are explicitly configured for an index and doesn't allow
* access to individual tokenizers, char or token filter.
*
* @see AnalysisRegistry
*/
public final class IndexAnalyzers extends AbstractIndexComponent implements Closeable {
private final NamedAnalyzer defaultIndexAnalyzer;
private final NamedAnalyzer defaultSearchAnalyzer;
private final NamedAnalyzer defaultSearchQuoteAnalyzer;
private final Map analyzers;
private final Map normalizers;
private final Map whitespaceNormalizers;
private final IndexSettings indexSettings;
public IndexAnalyzers(IndexSettings indexSettings, NamedAnalyzer defaultIndexAnalyzer, NamedAnalyzer defaultSearchAnalyzer,
NamedAnalyzer defaultSearchQuoteAnalyzer, Map analyzers,
Map normalizers, Map whitespaceNormalizers) {
super(indexSettings);
if (defaultIndexAnalyzer.name().equals("default") == false) {
throw new IllegalStateException("default analyzer must have the name [default] but was: [" + defaultIndexAnalyzer.name() + "]");
}
this.defaultIndexAnalyzer = defaultIndexAnalyzer;
this.defaultSearchAnalyzer = defaultSearchAnalyzer;
this.defaultSearchQuoteAnalyzer = defaultSearchQuoteAnalyzer;
this.analyzers = analyzers;
this.normalizers = normalizers;
this.whitespaceNormalizers = whitespaceNormalizers;
this.indexSettings = indexSettings;
}
/**
* Returns an analyzer mapped to the given name or null
if not present
*/
public NamedAnalyzer get(String name) {
return analyzers.get(name);
}
/**
* Returns a normalizer mapped to the given name or null
if not present
*/
public NamedAnalyzer getNormalizer(String name) {
return normalizers.get(name);
}
/**
* Returns a normalizer that splits on whitespace mapped to the given name or null
if not present
*/
public NamedAnalyzer getWhitespaceNormalizer(String name) {
return whitespaceNormalizers.get(name);
}
/**
* Returns the default index analyzer for this index
*/
public NamedAnalyzer getDefaultIndexAnalyzer() {
return defaultIndexAnalyzer;
}
/**
* Returns the default search analyzer for this index
*/
public NamedAnalyzer getDefaultSearchAnalyzer() {
return defaultSearchAnalyzer;
}
/**
* Returns the default search quote analyzer for this index
*/
public NamedAnalyzer getDefaultSearchQuoteAnalyzer() {
return defaultSearchQuoteAnalyzer;
}
@Override
public void close() throws IOException {
IOUtils.close(() -> Stream.concat(analyzers.values().stream(), normalizers.values().stream())
.filter(a -> a.scope() == AnalyzerScope.INDEX)
.iterator());
}
/**
* Returns the indices settings
*/
public IndexSettings getIndexSettings() {
return indexSettings;
}
}