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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.ArrayUtil;
import org.apache.lucene.util.BytesRef;
import org.apache.lucene.util.BytesRefBuilder;
import org.apache.lucene.util.RamUsageEstimator;
import org.elasticsearch.index.fielddata.AtomicFieldData;
import org.elasticsearch.index.fielddata.ScriptDocValues;
import org.elasticsearch.index.fielddata.SortedBinaryDocValues;
import java.util.Arrays;
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<Accountable> getChildResources() {
return Collections.emptyList();
}
@Override
public SortedBinaryDocValues getBytesValues() {
return new SortedBinaryDocValues() {
int count;
BytesRefBuilder[] refs = new BytesRefBuilder[0];
final ByteArrayDataInput in = new ByteArrayDataInput();
@Override
public void setDocument(int docId) {
final BytesRef bytes = values.get(docId);
in.reset(bytes.bytes, bytes.offset, bytes.length);
if (bytes.length == 0) {
count = 0;
} else {
count = in.readVInt();
if (count > refs.length) {
final int previousLength = refs.length;
refs = Arrays.copyOf(refs, ArrayUtil.oversize(count, RamUsageEstimator.NUM_BYTES_OBJECT_REF));
for (int i = previousLength; i < refs.length; ++i) {
refs[i] = new BytesRefBuilder();
}
}
for (int i = 0; i < count; ++i) {
final int length = in.readVInt();
final BytesRefBuilder scratch = refs[i];
scratch.grow(length);
in.readBytes(scratch.bytes(), 0, length);
scratch.setLength(length);
}
}
}
@Override
public int count() {
return count;
}
@Override
public BytesRef valueAt(int index) {
return refs[index].get();
}
};
}
@Override
public ScriptDocValues getScriptValues() {
return new ScriptDocValues.BytesRefs(getBytesValues());
}
@Override
public void close() {
// no-op
}
}
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