org.elasticsearch.common.lucene.docset.BitsDocIdSetIterator Maven / Gradle / Ivy
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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.common.lucene.docset;
import org.apache.lucene.search.DocIdSetIterator;
import org.apache.lucene.search.FilteredDocIdSetIterator;
import org.apache.lucene.util.Bits;
/**
* A {@link Bits} based iterator.
*/
public class BitsDocIdSetIterator extends MatchDocIdSetIterator {
private final Bits bits;
public BitsDocIdSetIterator(Bits bits) {
super(bits.length());
this.bits = bits;
}
public BitsDocIdSetIterator(int maxDoc, Bits bits) {
super(maxDoc);
this.bits = bits;
}
@Override
protected boolean matchDoc(int doc) {
return bits.get(doc);
}
public static class FilteredIterator extends FilteredDocIdSetIterator {
private final Bits bits;
FilteredIterator(DocIdSetIterator innerIter, Bits bits) {
super(innerIter);
this.bits = bits;
}
@Override
protected boolean match(int doc) {
return bits.get(doc);
}
}
@Override
public long cost() {
return this.bits.length();
}
}