com.hazelcast.map.impl.mapstore.writebehind.entry.NullValueDelayedEntry Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2015, 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.mapstore.writebehind.entry;
import com.hazelcast.map.impl.mapstore.writebehind.WriteBehindStore;
/**
* Only key is set and other values are omitted. Only used to check whether
* a {@link DelayedEntry} for the key is exist.
*
* @param the key type.
* @param the value type.
* @see WriteBehindStore#flush(Object, Object, long, boolean)
*/
class NullValueDelayedEntry implements DelayedEntry {
private final K key;
public NullValueDelayedEntry(K key) {
this.key = key;
}
@Override
public K getKey() {
return key;
}
@Override
public V getValue() {
return null;
}
@Override
public long getStoreTime() {
return -1L;
}
@Override
public int getPartitionId() {
return -1;
}
@Override
public void setStoreTime(long storeTime) {
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (!(o instanceof NullValueDelayedEntry)) {
return false;
}
NullValueDelayedEntry that = (NullValueDelayedEntry) o;
return !(key != null ? !key.equals(that.key) : that.key != null);
}
@Override
public int hashCode() {
return key != null ? key.hashCode() : 0;
}
}