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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.ordinals;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.LeafReaderContext;
import org.apache.lucene.search.SortField;
import org.apache.lucene.util.Accountable;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.index.AbstractIndexComponent;
import org.elasticsearch.index.IndexSettings;
import org.elasticsearch.index.fielddata.AtomicOrdinalsFieldData;
import org.elasticsearch.index.fielddata.IndexFieldData;
import org.elasticsearch.index.fielddata.IndexFieldData.XFieldComparatorSource.Nested;
import org.elasticsearch.index.fielddata.IndexOrdinalsFieldData;
import org.elasticsearch.search.MultiValueMode;
import java.util.Collection;
import java.util.Collections;
/**
* {@link IndexFieldData} base class for concrete global ordinals implementations.
*/
public abstract class GlobalOrdinalsIndexFieldData extends AbstractIndexComponent implements IndexOrdinalsFieldData, Accountable {
private final String fieldName;
private final long memorySizeInBytes;
protected GlobalOrdinalsIndexFieldData(IndexSettings indexSettings, String fieldName, long memorySizeInBytes) {
super(indexSettings);
this.fieldName = fieldName;
this.memorySizeInBytes = memorySizeInBytes;
}
@Override
public AtomicOrdinalsFieldData loadDirect(LeafReaderContext context) throws Exception {
return load(context);
}
@Override
public IndexOrdinalsFieldData loadGlobal(DirectoryReader indexReader) {
return this;
}
@Override
public IndexOrdinalsFieldData localGlobalDirect(DirectoryReader indexReader) throws Exception {
return this;
}
@Override
public String getFieldName() {
return fieldName;
}
@Override
public SortField sortField(@Nullable Object missingValue, MultiValueMode sortMode, Nested nested, boolean reverse) {
throw new UnsupportedOperationException("no global ordinals sorting yet");
}
@Override
public void clear() {
// no need to clear, because this is cached and cleared in AbstractBytesIndexFieldData
}
@Override
public long ramBytesUsed() {
return memorySizeInBytes;
}
@Override
public Collection<Accountable> getChildResources() {
// TODO: break down ram usage?
return Collections.emptyList();
}
}