com.hazelcast.cache.impl.journal.DeserializingEventJournalCacheEvent Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2020, 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.cache.impl.journal;
import com.hazelcast.cache.CacheEventType;
import com.hazelcast.cache.impl.CacheDataSerializerHook;
import com.hazelcast.cache.journal.EventJournalCacheEvent;
import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.core.HazelcastInstanceAware;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.nio.serialization.Data;
import com.hazelcast.spi.impl.SerializationServiceSupport;
import com.hazelcast.spi.serialization.SerializationService;
import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
import java.io.IOException;
@SuppressFBWarnings(value = "EQ_DOESNT_OVERRIDE_EQUALS",
justification = "equality is checked by serialised data in superclass, not deserialised instances in this class")
public class DeserializingEventJournalCacheEvent
extends InternalEventJournalCacheEvent
implements EventJournalCacheEvent, HazelcastInstanceAware {
private SerializationService serializationService;
private K objectKey;
private V objectNewValue;
private V objectOldValue;
public DeserializingEventJournalCacheEvent() {
}
public DeserializingEventJournalCacheEvent(SerializationService serializationService, InternalEventJournalCacheEvent je) {
super(je.getDataKey(), je.getDataNewValue(), je.getDataOldValue(), je.getEventType());
this.serializationService = serializationService;
}
@Override
public int getId() {
return CacheDataSerializerHook.EVENT_JOURNAL_DESERIALIZING_CACHE_EVENT;
}
@Override
public K getKey() {
if (objectKey == null && dataKey != null) {
objectKey = serializationService.toObject(dataKey);
}
return objectKey;
}
@Override
public V getNewValue() {
if (objectNewValue == null && dataNewValue != null) {
objectNewValue = serializationService.toObject(dataNewValue);
}
return objectNewValue;
}
@Override
public V getOldValue() {
if (objectOldValue == null && dataOldValue != null) {
objectOldValue = serializationService.toObject(dataOldValue);
}
return objectOldValue;
}
@Override
public CacheEventType getType() {
return CacheEventType.getByType(eventType);
}
@Override
public void writeData(ObjectDataOutput out) throws IOException {
out.writeInt(eventType);
out.writeData(toData(dataKey, objectKey));
out.writeData(toData(dataNewValue, objectNewValue));
out.writeData(toData(dataOldValue, objectOldValue));
}
private Data toData(Data data, Object o) {
return o != null ? serializationService.toData(o) : data;
}
@Override
public void setHazelcastInstance(HazelcastInstance hazelcastInstance) {
serializationService = ((SerializationServiceSupport) hazelcastInstance).getSerializationService();
}
}