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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.shard;
import org.apache.lucene.codecs.DocValuesProducer;
import org.apache.lucene.index.BinaryDocValues;
import org.apache.lucene.index.FieldInfo;
import org.apache.lucene.index.NumericDocValues;
import org.apache.lucene.index.SortedDocValues;
import org.apache.lucene.index.SortedNumericDocValues;
import org.apache.lucene.index.SortedSetDocValues;
import org.apache.lucene.util.Accountable;
import org.apache.lucene.util.Bits;
import java.io.IOException;
import java.util.Collection;
import java.util.Collections;
// TODO: move this to lucene's FilterCodecReader
/**
* Base class for filtering DocValuesProducer implementations.
* <p>
* NOTE: just like with DocValuesProducer, the default {@link #getMergeInstance()}
* is unoptimized. overriding this method when possible can improve performance.
*/
class FilterDocValuesProducer extends DocValuesProducer {
/** The underlying Producer instance. */
protected final DocValuesProducer in;
/**
* Creates a new FilterDocValuesProducer
* @param in the underlying producer.
*/
FilterDocValuesProducer(DocValuesProducer in) {
this.in = in;
}
@Override
public void close() throws IOException {
in.close();
}
@Override
public long ramBytesUsed() {
return in.ramBytesUsed();
}
@Override
public Collection<Accountable> getChildResources() {
return in.getChildResources();
}
@Override
public NumericDocValues getNumeric(FieldInfo field) throws IOException {
return in.getNumeric(field);
}
@Override
public BinaryDocValues getBinary(FieldInfo field) throws IOException {
return in.getBinary(field);
}
@Override
public SortedDocValues getSorted(FieldInfo field) throws IOException {
return in.getSorted(field);
}
@Override
public SortedNumericDocValues getSortedNumeric(FieldInfo field) throws IOException {
return in.getSortedNumeric(field);
}
@Override
public SortedSetDocValues getSortedSet(FieldInfo field) throws IOException {
return in.getSortedSet(field);
}
@Override
public Bits getDocsWithField(FieldInfo field) throws IOException {
return in.getDocsWithField(field);
}
@Override
public void checkIntegrity() throws IOException {
in.checkIntegrity();
}
// TODO: move this out somewhere else (and can fix all these null producers in lucene?)
// we shouldn't need nullness for any reason.
public static final DocValuesProducer EMPTY = new DocValuesProducer() {
@Override
public void close() throws IOException {}
@Override
public long ramBytesUsed() {
return 0;
}
@Override
public Collection<Accountable> getChildResources() {
return Collections.emptyList();
}
@Override
public NumericDocValues getNumeric(FieldInfo field) throws IOException {
throw new IllegalStateException(); // we don't have any docvalues
}
@Override
public BinaryDocValues getBinary(FieldInfo field) throws IOException {
throw new IllegalStateException(); // we don't have any docvalues
}
@Override
public SortedDocValues getSorted(FieldInfo field) throws IOException {
throw new IllegalStateException(); // we don't have any docvalues
}
@Override
public SortedNumericDocValues getSortedNumeric(FieldInfo field) throws IOException {
throw new IllegalStateException(); // we don't have any docvalues
}
@Override
public SortedSetDocValues getSortedSet(FieldInfo field) throws IOException {
throw new IllegalStateException(); // we don't have any docvalues
}
@Override
public Bits getDocsWithField(FieldInfo field) throws IOException {
throw new IllegalStateException(); // we don't have any docvalues
}
@Override
public void checkIntegrity() throws IOException {}
};
}
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