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Removed unused nested children collector.

This commit is contained in:
Martijn van Groningen 2013-02-25 14:13:59 +01:00
parent c7a05b1dda
commit c751df5ee5
1 changed files with 0 additions and 94 deletions
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94
src/main/java/org/elasticsearch/index/search/nested/NestedChildrenCollector.java
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@ -1,94 +0,0 @@
/*
* Licensed to ElasticSearch and Shay Banon 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.search.nested;
import org.apache.lucene.index.AtomicReaderContext;
import org.apache.lucene.search.Collector;
import org.apache.lucene.search.DocIdSet;
import org.apache.lucene.search.Filter;
import org.apache.lucene.search.Scorer;
import org.apache.lucene.util.Bits;
import org.apache.lucene.util.FixedBitSet;
import org.elasticsearch.common.lucene.docset.DocIdSets;
import org.elasticsearch.common.lucene.search.XCollector;
import java.io.IOException;
/**
* A collector that accepts parent docs, and calls back the collect on child docs of that parent.
*/
public class NestedChildrenCollector extends XCollector {
private final Collector collector;
private final Filter parentFilter;
private final Filter childFilter;
private Bits childDocs;
private FixedBitSet parentDocs;
public NestedChildrenCollector(Collector collector, Filter parentFilter, Filter childFilter) {
this.collector = collector;
this.parentFilter = parentFilter;
this.childFilter = childFilter;
}
@Override
public void postCollection() {
if (collector instanceof XCollector) {
((XCollector) collector).postCollection();
}
}
@Override
public void setScorer(Scorer scorer) throws IOException {
collector.setScorer(scorer);
}
@Override
public void setNextReader(AtomicReaderContext context) throws IOException {
collector.setNextReader(context);
// Can use null as acceptedDocs here, since only live doc ids are being pushed to collect method.
DocIdSet docIdSet = parentFilter.getDocIdSet(context, null);
// Im ES if parent is deleted, then also the children are deleted. Therefore acceptedDocs can also null here.
childDocs = DocIdSets.toSafeBits(context.reader(), childFilter.getDocIdSet(context, null));
if (docIdSet == null) {
parentDocs = null;
} else {
parentDocs = (FixedBitSet) docIdSet;
}
}
@Override
public boolean acceptsDocsOutOfOrder() {
return collector.acceptsDocsOutOfOrder();
}
@Override
public void collect(int parentDoc) throws IOException {
if (parentDoc == 0 || parentDocs == null) {
return;
}
int prevParentDoc = parentDocs.prevSetBit(parentDoc - 1);
for (int i = (parentDoc - 1); i > prevParentDoc; i--) {
if (childDocs.get(i)) {
collector.collect(i);
}
}
}
}