org.elasticsearch.common.lucene.docset.BitsDocIdSetIterator Maven / Gradle / Ivy
/*
* 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.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();
}
}