com.hazelcast.map.impl.iterator.MapKeysWithCursor Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2018, 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.map.impl.iterator;
import com.hazelcast.map.impl.MapDataSerializerHook;
import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.nio.serialization.Data;
import java.io.IOException;
import java.util.List;
/**
* Container class for a collection of keys along with an offset from which new keys can be fetched.
* This class is usually used when iterating the map keys.
*
* @see com.hazelcast.map.impl.proxy.MapProxyImpl#iterator
*/
public class MapKeysWithCursor extends AbstractCursor {
public MapKeysWithCursor() {
}
public MapKeysWithCursor(List keys, int nextTableIndexToReadFrom) {
super(keys, nextTableIndexToReadFrom);
}
public int getCount() {
return getBatch() != null ? getBatch().size() : 0;
}
@Override
void writeElement(ObjectDataOutput out, Data element) throws IOException {
out.writeData(element);
}
@Override
Data readElement(ObjectDataInput in) throws IOException {
return in.readData();
}
@Override
public int getId() {
return MapDataSerializerHook.KEYS_WITH_CURSOR;
}
}