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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.DirectoryReader;
import org.apache.lucene.index.DocValues;
import org.apache.lucene.index.LeafReaderContext;
import org.apache.lucene.index.RandomAccessOrds;
import org.apache.lucene.index.SortedDocValues;
import org.apache.lucene.util.Accountable;
import org.apache.lucene.util.BytesRef;
import org.elasticsearch.index.IndexSettings;
import org.elasticsearch.index.fielddata.AtomicOrdinalsFieldData;
import org.elasticsearch.index.fielddata.FieldDataType;
import org.elasticsearch.index.fielddata.IndexFieldData;
import org.elasticsearch.index.fielddata.IndexFieldDataCache;
import org.elasticsearch.index.fielddata.IndexOrdinalsFieldData;
import org.elasticsearch.index.mapper.MappedFieldType;
import org.elasticsearch.index.mapper.MapperService;
import org.elasticsearch.indices.breaker.CircuitBreakerService;
import java.util.Collection;
import java.util.Collections;
public class IndexIndexFieldData extends AbstractIndexOrdinalsFieldData {
public static class Builder implements IndexFieldData.Builder {
@Override
public IndexFieldData<?> build(IndexSettings indexSettings, MappedFieldType fieldType, IndexFieldDataCache cache,
CircuitBreakerService breakerService, MapperService mapperService) {
return new IndexIndexFieldData(indexSettings, fieldType.name());
}
}
private static class IndexAtomicFieldData extends AbstractAtomicOrdinalsFieldData {
private final String index;
IndexAtomicFieldData(String index) {
this.index = index;
}
@Override
public long ramBytesUsed() {
return 0;
}
@Override
public Collection<Accountable> getChildResources() {
return Collections.emptyList();
}
@Override
public RandomAccessOrds getOrdinalsValues() {
final BytesRef term = new BytesRef(index);
final SortedDocValues sortedValues = new SortedDocValues() {
@Override
public BytesRef lookupOrd(int ord) {
return term;
}
@Override
public int getValueCount() {
return 1;
}
@Override
public int getOrd(int docID) {
return 0;
}
};
return (RandomAccessOrds) DocValues.singleton(sortedValues);
}
@Override
public void close() {
}
}
private final AtomicOrdinalsFieldData atomicFieldData;
private IndexIndexFieldData(IndexSettings indexSettings, String name) {
super(indexSettings, name, new FieldDataType("string"), null, null);
atomicFieldData = new IndexAtomicFieldData(index().getName());
}
@Override
public void clear() {
}
@Override
public final AtomicOrdinalsFieldData load(LeafReaderContext context) {
return atomicFieldData;
}
@Override
public AtomicOrdinalsFieldData loadDirect(LeafReaderContext context)
throws Exception {
return atomicFieldData;
}
@Override
public IndexOrdinalsFieldData loadGlobal(DirectoryReader indexReader) {
return this;
}
@Override
public IndexOrdinalsFieldData localGlobalDirect(DirectoryReader indexReader) throws Exception {
return loadGlobal(indexReader);
}
}
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