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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.highlight;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.util.ExtensionPoint;
import java.util.*;
/**
* An extensions point and registry for all the highlighters a node supports.
*/
public class Highlighters extends ExtensionPoint.ClassMap<Highlighter> {
private static final String FVH = "fvh";
private static final String PLAIN = "plain";
private static final String POSTINGS = "postings";
private final Map<String, Highlighter> parsers;
public Highlighters(){
this(Collections.emptyMap());
}
private Highlighters(Map<String, Highlighter> parsers) {
super("highlighter", Highlighter.class, new HashSet<>(Arrays.asList(FVH, PLAIN, POSTINGS)),
Highlighters.class);
this.parsers = Collections.unmodifiableMap(parsers);
}
@Inject
public Highlighters(Settings settings, Map<String, Highlighter> parsers) {
this(addBuiltIns(settings, parsers));
}
private static Map<String, Highlighter> addBuiltIns(Settings settings, Map<String, Highlighter> parsers) {
Map<String, Highlighter> map = new HashMap<>();
map.put(FVH, new FastVectorHighlighter(settings));
map.put(PLAIN, new PlainHighlighter());
map.put(POSTINGS, new PostingsHighlighter());
map.putAll(parsers);
return map;
}
public Highlighter get(String type) {
return parsers.get(type);
}
}
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