org.elasticsearch.index.fielddata.ordinals.GlobalOrdinalMapping Maven / Gradle / Ivy
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* 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
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*/
package org.elasticsearch.index.fielddata.ordinals;
import org.apache.lucene.index.MultiDocValues.OrdinalMap;
import org.apache.lucene.index.RandomAccessOrds;
import org.apache.lucene.util.BytesRef;
import org.apache.lucene.util.LongValues;
import org.elasticsearch.index.fielddata.AbstractRandomAccessOrds;
/**
* A {@link RandomAccessOrds} implementation that returns ordinals that are global.
*/
public class GlobalOrdinalMapping extends AbstractRandomAccessOrds {
private final RandomAccessOrds values;
private final OrdinalMap ordinalMap;
private final LongValues mapping;
private final RandomAccessOrds[] bytesValues;
GlobalOrdinalMapping(OrdinalMap ordinalMap, RandomAccessOrds[] bytesValues, int segmentIndex) {
super();
this.values = bytesValues[segmentIndex];
this.bytesValues = bytesValues;
this.ordinalMap = ordinalMap;
this.mapping = ordinalMap.getGlobalOrds(segmentIndex);
}
@Override
public long getValueCount() {
return ordinalMap.getValueCount();
}
public final long getGlobalOrd(long segmentOrd) {
return mapping.get(segmentOrd);
}
@Override
public long ordAt(int index) {
return getGlobalOrd(values.ordAt(index));
}
@Override
public void doSetDocument(int docId) {
values.setDocument(docId);
}
@Override
public int cardinality() {
return values.cardinality();
}
@Override
public BytesRef lookupOrd(long globalOrd) {
final long segmentOrd = ordinalMap.getFirstSegmentOrd(globalOrd);
int readerIndex = ordinalMap.getFirstSegmentNumber(globalOrd);
return bytesValues[readerIndex].lookupOrd(segmentOrd);
}
}