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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.engine;
import org.apache.lucene.index.LeafReader;
import org.apache.lucene.index.NumericDocValues;
import org.elasticsearch.index.mapper.SeqNoFieldMapper;
import org.elasticsearch.index.mapper.SourceFieldMapper;
import org.elasticsearch.index.mapper.VersionFieldMapper;
import java.io.IOException;
import java.util.Objects;
final class CombinedDocValues {
private final NumericDocValues versionDV;
private final NumericDocValues seqNoDV;
private final NumericDocValues primaryTermDV;
private final NumericDocValues tombstoneDV;
private final NumericDocValues recoverySource;
CombinedDocValues(LeafReader leafReader) throws IOException {
this.versionDV = Objects.requireNonNull(leafReader.getNumericDocValues(VersionFieldMapper.NAME), "VersionDV is missing");
this.seqNoDV = Objects.requireNonNull(leafReader.getNumericDocValues(SeqNoFieldMapper.NAME), "SeqNoDV is missing");
this.primaryTermDV = Objects.requireNonNull(
leafReader.getNumericDocValues(SeqNoFieldMapper.PRIMARY_TERM_NAME), "PrimaryTermDV is missing");
this.tombstoneDV = leafReader.getNumericDocValues(SeqNoFieldMapper.TOMBSTONE_NAME);
this.recoverySource = leafReader.getNumericDocValues(SourceFieldMapper.RECOVERY_SOURCE_NAME);
}
long docVersion(int segmentDocId) throws IOException {
assert versionDV.docID() < segmentDocId;
if (versionDV.advanceExact(segmentDocId) == false) {
assert false : "DocValues for field [" + VersionFieldMapper.NAME + "] is not found";
throw new IllegalStateException("DocValues for field [" + VersionFieldMapper.NAME + "] is not found");
}
return versionDV.longValue();
}
long docSeqNo(int segmentDocId) throws IOException {
assert seqNoDV.docID() < segmentDocId;
if (seqNoDV.advanceExact(segmentDocId) == false) {
assert false : "DocValues for field [" + SeqNoFieldMapper.NAME + "] is not found";
throw new IllegalStateException("DocValues for field [" + SeqNoFieldMapper.NAME + "] is not found");
}
return seqNoDV.longValue();
}
long docPrimaryTerm(int segmentDocId) throws IOException {
// We exclude non-root nested documents when querying changes, every returned document must have primary term.
assert primaryTermDV.docID() < segmentDocId;
if (primaryTermDV.advanceExact(segmentDocId) == false) {
assert false : "DocValues for field [" + SeqNoFieldMapper.PRIMARY_TERM_NAME + "] is not found";
throw new IllegalStateException("DocValues for field [" + SeqNoFieldMapper.PRIMARY_TERM_NAME + "] is not found");
}
return primaryTermDV.longValue();
}
boolean isTombstone(int segmentDocId) throws IOException {
if (tombstoneDV == null) {
return false;
}
assert tombstoneDV.docID() < segmentDocId;
return tombstoneDV.advanceExact(segmentDocId) && tombstoneDV.longValue() > 0;
}
boolean hasRecoverySource(int segmentDocId) throws IOException {
if (recoverySource == null) {
return false;
}
assert recoverySource.docID() < segmentDocId;
return recoverySource.advanceExact(segmentDocId);
}
}