/*
* 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.
*/
package org.apache.geode.internal.cache.persistence.query.mock;
import java.util.concurrent.atomic.AtomicLong;
import org.apache.geode.internal.cache.CachedDeserializable;
import org.apache.geode.internal.cache.persistence.query.CloseableIterator;
import org.apache.geode.internal.cache.persistence.query.IdentityExtractor;
import org.apache.geode.internal.cache.persistence.query.ResultBag;
import org.apache.geode.internal.cache.persistence.query.SortKeyExtractor;
/**
* Mock sorted bag implementation. Uses the mock index map internally, for convenience.
*
*/
public class SortedResultBagImpl implements ResultBag {
private final IndexMapImpl map;
private AtomicLong counter = new AtomicLong();
private SortKeyExtractor extractor;
private boolean reverse;
public SortedResultBagImpl(SortKeyExtractor extractor, boolean reverse) {
this.extractor = extractor == null ? new IdentityExtractor() : extractor;
map = new IndexMapImpl();
this.reverse = reverse;
}
@Override
public void add(Object e) {
map.put(extractor.getSortKey(e), counter.incrementAndGet(), e);
}
@Override
public CloseableIterator<CachedDeserializable> iterator() {
if (reverse) {
return map.descendingValueIterator();
} else {
return map.valueIterator();
}
}
@Override
public void close() {
map.destroy();
}
}