org.elasticsearch.index.fielddata.plain.AbstractBinaryDVLeafFieldData Maven / Gradle / Ivy
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Elasticsearch subproject :server
/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
package org.elasticsearch.index.fielddata.plain;
import org.apache.lucene.index.BinaryDocValues;
import org.apache.lucene.util.BytesRef;
import org.elasticsearch.common.io.stream.ByteArrayStreamInput;
import org.elasticsearch.index.fielddata.LeafFieldData;
import org.elasticsearch.index.fielddata.SortedBinaryDocValues;
import java.io.IOException;
abstract class AbstractBinaryDVLeafFieldData implements LeafFieldData {
private final BinaryDocValues values;
AbstractBinaryDVLeafFieldData(BinaryDocValues values) {
super();
this.values = values;
}
@Override
public long ramBytesUsed() {
return 0; // not exposed by Lucene
}
@Override
public SortedBinaryDocValues getBytesValues() {
return new SortedBinaryDocValues() {
int count;
final ByteArrayStreamInput in = new ByteArrayStreamInput();
final BytesRef scratch = new BytesRef();
@Override
public boolean advanceExact(int doc) throws IOException {
if (values.advanceExact(doc)) {
final BytesRef bytes = values.binaryValue();
assert bytes.length > 0;
in.reset(bytes.bytes, bytes.offset, bytes.length);
count = in.readVInt();
scratch.bytes = bytes.bytes;
return true;
} else {
return false;
}
}
@Override
public int docValueCount() {
return count;
}
@Override
public BytesRef nextValue() throws IOException {
scratch.length = in.readVInt();
scratch.offset = in.getPosition();
in.setPosition(scratch.offset + scratch.length);
return scratch;
}
};
}
@Override
public void close() {
// no-op
}
}