com.hazelcast.client.MultiMapEntryIterator Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2010, Hazel Ltd. 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.client;
import com.hazelcast.client.impl.Values;
import com.hazelcast.core.Instance;
import java.util.Iterator;
import java.util.Map;
public class MultiMapEntryIterator extends MapEntryIterator {
private volatile Iterator currentValueIterator;
private volatile Object lastKey;
protected volatile Map.Entry lastMultiMapEntry;
public MultiMapEntryIterator(Iterator it, EntryHolder proxy, Instance.InstanceType instanceType) {
super(it, proxy, instanceType);
}
public boolean hasNext() {
if (currentValueIterator == null) {
return it.hasNext();
}
return currentValueIterator.hasNext() || it.hasNext();
}
public Map.Entry next() {
if (currentValueIterator == null || !currentValueIterator.hasNext()) {
lastKey = it.next();
Values value = (Values) proxy.get(lastKey);
if (value == null) {
return next();
}
currentValueIterator = value.iterator();
}
if (currentValueIterator == null || !currentValueIterator.hasNext()) {
return next();
}
lastMultiMapEntry = new MapEntry(lastKey, currentValueIterator.next(), proxy);
return lastMultiMapEntry;
}
}