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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.search.suggest;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.util.ExtensionPoint;
import org.elasticsearch.search.suggest.completion.CompletionSuggester;
import org.elasticsearch.search.suggest.phrase.PhraseSuggester;
import org.elasticsearch.search.suggest.term.TermSuggester;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
/**
*
*/
public final class Suggesters extends ExtensionPoint.ClassMap<Suggester> {
private final Map<String, Suggester> parsers;
public Suggesters() {
this(Collections.emptyMap());
}
@Inject
public Suggesters(Map<String, Suggester> suggesters) {
super("suggester", Suggester.class, new HashSet<>(Arrays.asList("phrase", "term", "completion")), Suggesters.class, SuggestPhase.class);
this.parsers = Collections.unmodifiableMap(addBuildIns(suggesters));
}
private static Map<String, Suggester> addBuildIns(Map<String, Suggester> suggesters) {
final Map<String, Suggester> map = new HashMap<>();
map.put("phrase", PhraseSuggester.PROTOTYPE);
map.put("term", TermSuggester.PROTOTYPE);
map.put("completion", CompletionSuggester.PROTOTYPE);
map.putAll(suggesters);
return map;
}
public SuggestionBuilder<? extends SuggestionBuilder> getSuggestionPrototype(String suggesterName) {
Suggester<?> suggester = parsers.get(suggesterName);
if (suggester == null) {
throw new IllegalArgumentException("suggester with name [" + suggesterName + "] not supported");
}
SuggestionBuilder<?> suggestParser = suggester.getBuilderPrototype();
if (suggestParser == null) {
throw new IllegalArgumentException("suggester with name [" + suggesterName + "] not supported");
}
return suggestParser;
}
}
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