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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.fielddata.ordinals;
import org.apache.lucene.index.LeafReaderContext;
import org.apache.lucene.index.MultiDocValues.OrdinalMap;
import org.apache.lucene.index.SortedSetDocValues;
import org.apache.lucene.util.Accountable;
import org.elasticsearch.index.IndexSettings;
import org.elasticsearch.index.fielddata.AtomicOrdinalsFieldData;
import org.elasticsearch.index.fielddata.ScriptDocValues;
import org.elasticsearch.index.fielddata.plain.AbstractAtomicOrdinalsFieldData;
import java.util.Collection;
import java.util.function.Function;
/**
* {@link org.elasticsearch.index.fielddata.IndexFieldData} impl based on global ordinals.
*/
final class InternalGlobalOrdinalsIndexFieldData extends GlobalOrdinalsIndexFieldData {
private final Atomic[] atomicReaders;
private final Function<SortedSetDocValues, ScriptDocValues<?>> scriptFunction;
InternalGlobalOrdinalsIndexFieldData(IndexSettings indexSettings, String fieldName, AtomicOrdinalsFieldData[] segmentAfd,
OrdinalMap ordinalMap, long memorySizeInBytes, Function<SortedSetDocValues, ScriptDocValues<?>> scriptFunction) {
super(indexSettings, fieldName, memorySizeInBytes);
this.atomicReaders = new Atomic[segmentAfd.length];
for (int i = 0; i < segmentAfd.length; i++) {
atomicReaders[i] = new Atomic(segmentAfd[i], ordinalMap, i);
}
this.scriptFunction = scriptFunction;
}
@Override
public AtomicOrdinalsFieldData load(LeafReaderContext context) {
return atomicReaders[context.ord];
}
private final class Atomic extends AbstractAtomicOrdinalsFieldData {
private final AtomicOrdinalsFieldData afd;
private final OrdinalMap ordinalMap;
private final int segmentIndex;
private Atomic(AtomicOrdinalsFieldData afd, OrdinalMap ordinalMap, int segmentIndex) {
super(scriptFunction);
this.afd = afd;
this.ordinalMap = ordinalMap;
this.segmentIndex = segmentIndex;
}
@Override
public SortedSetDocValues getOrdinalsValues() {
final SortedSetDocValues values = afd.getOrdinalsValues();
if (values.getValueCount() == ordinalMap.getValueCount()) {
// segment ordinals match global ordinals
return values;
}
final SortedSetDocValues[] bytesValues = new SortedSetDocValues[atomicReaders.length];
for (int i = 0; i < bytesValues.length; i++) {
bytesValues[i] = atomicReaders[i].afd.getOrdinalsValues();
}
return new GlobalOrdinalMapping(ordinalMap, bytesValues, segmentIndex);
}
@Override
public long ramBytesUsed() {
return afd.ramBytesUsed();
}
@Override
public Collection<Accountable> getChildResources() {
return afd.getChildResources();
}
@Override
public void close() {
}
}
}
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