com.hazelcast.map.impl.mapstore.writethrough.WriteThroughStore 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.map.impl.mapstore.writethrough;
import com.hazelcast.map.EntryLoader.MetadataAwareValue;
import com.hazelcast.map.impl.mapstore.AbstractMapDataStore;
import com.hazelcast.map.impl.mapstore.MapStoreContext;
import com.hazelcast.map.impl.mapstore.writebehind.entry.DelayedEntry;
import com.hazelcast.internal.serialization.Data;
import java.util.UUID;
/**
* Write through map data store implementation.
* Created per map.
*/
public class WriteThroughStore extends AbstractMapDataStore {
public WriteThroughStore(MapStoreContext mapStoreContext) {
super(mapStoreContext);
}
@Override
public Object add(Data key, Object value,
long expirationTime, long time, UUID transactionId) {
Object objectKey = toObject(key);
Object objectValue = toObject(value);
if (getStore().isWithExpirationTime()) {
expirationTime = getUserExpirationTime(expirationTime);
getStore().store(objectKey, new MetadataAwareValue(objectValue, expirationTime));
} else {
getStore().store(objectKey, objectValue);
}
// if store is not a post-processing map-store, then avoid extra de-serialization phase.
return getStore().isPostProcessingMapStore() ? objectValue : value;
}
@Override
public void addForcibly(DelayedEntry delayedEntry) {
throw new IllegalStateException("No addForcibly call is expected from a write-through store!");
}
@Override
public void addTransient(Data key, long now) {
}
@Override
public Object addBackup(Data key, Object value, long expirationTime,
long time, UUID transactionId) {
return value;
}
@Override
public void remove(Data key, long time, UUID transactionId) {
getStore().delete(toObject(key));
}
@Override
public void removeBackup(Data key, long time, UUID
transactionId) {
}
@Override
public void reset() {
}
@Override
public Object load(Data key) {
return getStore().load(toObject(key));
}
@Override
public boolean loadable(Data key) {
return true;
}
@Override
public long softFlush() {
// Only write-behind configured map-stores are flushable.
return 0;
}
@Override
public void hardFlush() {
// Only write-behind configured map-stores are flushable.
}
@Override
public Object flush(Data key, Object value, boolean backup) {
return value;
}
@Override
public int notFinishedOperationsCount() {
return 0;
}
}