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DeletedDelayedEntry.java
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DeletedDelayedEntry.java
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/*
* Copyright (c) 2008-2021, 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.EntryLoader.MetadataAwareValue;
import com.hazelcast.map.MapStore;
import java.util.UUID;
/**
* Represents a candidate entry to be deleted from {@link MapStore}
*
* @param <K> the key type.
* @param <V> the value type.
*/
class DeletedDelayedEntry<K, V> implements DelayedEntry<K, V> {
private final K key;
private final int partitionId;
private long storeTime;
private volatile long sequence;
private UUID txnId;
DeletedDelayedEntry(K key, long storeTime, int partitionId) {
this.key = key;
this.storeTime = storeTime;
this.partitionId = partitionId;
}
@Override
public K getKey() {
return key;
}
@Override
public V getValue() {
return null;
}
@Override
public long getExpirationTime() {
return MetadataAwareValue.NO_TIME_SET;
}
@Override
public long getStoreTime() {
return storeTime;
}
@Override
public int getPartitionId() {
return partitionId;
}
@Override
public void setStoreTime(long storeTime) {
this.storeTime = storeTime;
}
@Override
public void setSequence(long sequence) {
this.sequence = sequence;
}
@Override
public long getSequence() {
return sequence;
}
@Override
public void setTxnId(UUID txnId) {
this.txnId = txnId;
}
@Override
public UUID getTxnId() {
return txnId;
}
/**
* This method is used when we are cleaning processed instances of this class.
* Caring only reference equality of objects because wanting exactly remove the same instance
* otherwise this method should not cause any remove from staging area.
*
* @see com.hazelcast.map.impl.mapstore.writebehind.WriteBehindStore#removeFromStagingArea
*/
@Override
public boolean equals(Object o) {
return this == o;
}
@Override
public int hashCode() {
return key.hashCode();
}
@Override
public String toString() {
return "DeletedDelayedEntry{"
+ "key=" + key
+ ", partitionId=" + partitionId
+ ", storeTime=" + storeTime
+ ", sequence=" + sequence
+ ", txnId=" + txnId
+ '}';
}
}