org.elasticsearch.index.fielddata.plain.BytesBinaryDVAtomicFieldData Maven / Gradle / Ivy
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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.plain;
import org.apache.lucene.index.BinaryDocValues;
import org.apache.lucene.store.ByteArrayDataInput;
import org.apache.lucene.util.Accountable;
import org.apache.lucene.util.BytesRef;
import org.elasticsearch.index.fielddata.AtomicFieldData;
import org.elasticsearch.index.fielddata.ScriptDocValues;
import org.elasticsearch.index.fielddata.SortedBinaryDocValues;
import java.io.IOException;
import java.util.Collection;
import java.util.Collections;
final class BytesBinaryDVAtomicFieldData implements AtomicFieldData {
private final BinaryDocValues values;
BytesBinaryDVAtomicFieldData(BinaryDocValues values) {
super();
this.values = values;
}
@Override
public long ramBytesUsed() {
return 0; // not exposed by Lucene
}
@Override
public Collection getChildResources() {
return Collections.emptyList();
}
@Override
public SortedBinaryDocValues getBytesValues() {
return new SortedBinaryDocValues() {
int count;
final ByteArrayDataInput in = new ByteArrayDataInput();
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 ScriptDocValues getScriptValues() {
return new ScriptDocValues.BytesRefs(getBytesValues());
}
@Override
public void close() {
// no-op
}
}