org.elasticsearch.index.cache.filter.soft.SoftFilterCache Maven / Gradle / Ivy
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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.cache.filter.soft;
import org.apache.lucene.search.Filter;
import org.elasticsearch.common.collect.MapMaker;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.lucene.docset.DocSet;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.index.Index;
import org.elasticsearch.index.cache.filter.support.AbstractDoubleConcurrentMapFilterCache;
import org.elasticsearch.index.settings.IndexSettings;
import java.util.concurrent.ConcurrentMap;
/**
* A soft reference based filter cache that has soft keys on the IndexReader.
*
* @author kimchy (shay.banon)
*/
public class SoftFilterCache extends AbstractDoubleConcurrentMapFilterCache {
@Inject public SoftFilterCache(Index index, @IndexSettings Settings indexSettings) {
super(index, indexSettings);
}
@Override protected ConcurrentMap buildCacheMap() {
// DocSet are not really stored with strong reference only when searching on them...
// Filter might be stored in query cache
return new MapMaker().softValues().makeMap();
}
@Override protected ConcurrentMap buildWeakCacheMap() {
// DocSet are not really stored with strong reference only when searching on them...
// Filter might be stored in query cache
return new MapMaker().weakValues().makeMap();
}
@Override public String type() {
return "soft";
}
}