org.elasticsearch.index.fielddata.plain.BinaryDVLeafFieldData Maven / Gradle / Ivy
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/*
* 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.index.DocValues;
import org.apache.lucene.index.LeafReader;
import org.apache.lucene.util.Accountable;
import org.elasticsearch.index.fielddata.FieldData;
import org.elasticsearch.index.fielddata.LeafFieldData;
import org.elasticsearch.index.fielddata.ScriptDocValues;
import org.elasticsearch.index.fielddata.SortedBinaryDocValues;
import org.elasticsearch.script.field.DelegateDocValuesField;
import org.elasticsearch.script.field.DocValuesScriptFieldFactory;
import java.io.IOException;
import java.util.Collection;
import java.util.Collections;
/** {@link LeafFieldData} impl on top of Lucene's binary doc values. */
public class BinaryDVLeafFieldData implements LeafFieldData {
private final LeafReader reader;
private final String field;
public BinaryDVLeafFieldData(LeafReader reader, String field) {
this.reader = reader;
this.field = field;
}
@Override
public SortedBinaryDocValues getBytesValues() {
try {
final BinaryDocValues values = DocValues.getBinary(reader, field);
return FieldData.singleton(values);
} catch (IOException e) {
throw new IllegalStateException("Cannot load doc values", e);
}
}
@Override
public DocValuesScriptFieldFactory getScriptFieldFactory(String name) {
return new DelegateDocValuesField(new ScriptDocValues.Strings(new ScriptDocValues.StringsSupplier(getBytesValues())), name);
}
@Override
public void close() {
// no-op
}
@Override
public long ramBytesUsed() {
return 0; // unknown
}
@Override
public Collection getChildResources() {
return Collections.emptyList();
}
}