package org.apache.lucene.search;
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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.
*/
import java.io.IOException;
import java.util.Random;
import org.apache.lucene.index.AtomicReaderContext;
/** Wraps another Collector and checks that
* acceptsDocsOutOfOrder is respected. */
public class AssertingCollector extends Collector {
public static Collector wrap(Random random, Collector other, boolean inOrder) {
return other instanceof AssertingCollector ? other : new AssertingCollector(random, other, inOrder);
}
final Random random;
final Collector in;
final boolean inOrder;
int lastCollected;
AssertingCollector(Random random, Collector in, boolean inOrder) {
this.random = random;
this.in = in;
this.inOrder = inOrder;
lastCollected = -1;
}
@Override
public void setScorer(Scorer scorer) throws IOException {
in.setScorer(AssertingScorer.getAssertingScorer(random, scorer));
}
@Override
public void collect(int doc) throws IOException {
if (inOrder || !acceptsDocsOutOfOrder()) {
assert doc > lastCollected : "Out of order : " + lastCollected + " " + doc;
}
in.collect(doc);
lastCollected = doc;
}
@Override
public void setNextReader(AtomicReaderContext context) throws IOException {
lastCollected = -1;
}
@Override
public boolean acceptsDocsOutOfOrder() {
return in.acceptsDocsOutOfOrder();
}
}