com.hazelcast.query.SingleResultSet Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2013, Hazelcast, Inc. All Rights Reserved.
*
* Licensed 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 com.hazelcast.query;
import com.hazelcast.core.MapEntry;
import com.hazelcast.impl.Record;
import java.util.AbstractSet;
import java.util.HashSet;
import java.util.Iterator;
import java.util.concurrent.ConcurrentMap;
public class SingleResultSet extends AbstractSet {
private final ConcurrentMap records;
public SingleResultSet(ConcurrentMap records) {
this.records = records;
}
@Override
public boolean contains(Object mapEntry) {
return records != null && records.containsKey(((Record) mapEntry).getId());
}
@Override
public Iterator iterator() {
if (records == null) {
return new HashSet().iterator();
} else {
return (Iterator) records.values().iterator();
}
}
@Override
public int size() {
return (records == null) ? 0 : records.size();
}
}