com.hazelcast.cache.impl.operation.CacheRemoveAllOperation Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2016, 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.operation;
import com.hazelcast.cache.impl.CacheClearResponse;
import com.hazelcast.cache.impl.CacheDataSerializerHook;
import com.hazelcast.cache.impl.ICacheRecordStore;
import com.hazelcast.cache.impl.ICacheService;
import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.nio.serialization.Data;
import com.hazelcast.partition.InternalPartitionService;
import com.hazelcast.spi.BackupAwareOperation;
import com.hazelcast.spi.Operation;
import com.hazelcast.spi.impl.MutatingOperation;
import javax.cache.CacheException;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;
import static com.hazelcast.cache.impl.CacheEventContextUtil.createCacheCompleteEvent;
/**
* TODO add a proper JavaDoc
*/
public class CacheRemoveAllOperation
extends PartitionWideCacheOperation
implements BackupAwareOperation, MutatingOperation {
private Set keys;
private int completionId;
private transient Set filteredKeys = new HashSet();
private transient ICacheService service;
private transient ICacheRecordStore cache;
public CacheRemoveAllOperation() {
}
public CacheRemoveAllOperation(String name, Set keys, int completionId) {
super(name);
this.keys = keys;
this.completionId = completionId;
}
@Override
public void beforeRun() throws Exception {
service = getService();
cache = service.getRecordStore(name, getPartitionId());
}
@Override
public void run() throws Exception {
if (cache == null) {
service.publishEvent(createCacheCompleteEvent(completionId).setCacheName(name));
return;
}
filterKeys();
try {
if (keys == null) {
// Here the filteredKeys is empty, this means we will remove all data
// filteredKeys will get filled with removed keys
cache.removeAll(filteredKeys, completionId);
} else if (!filteredKeys.isEmpty()) {
cache.removeAll(filteredKeys, completionId);
} else {
service.publishEvent(createCacheCompleteEvent(completionId).setCacheName(name));
}
response = new CacheClearResponse(Boolean.TRUE);
} catch (CacheException e) {
response = new CacheClearResponse(e);
}
}
private void filterKeys() {
if (keys == null) {
return;
}
InternalPartitionService partitionService = getNodeEngine().getPartitionService();
for (Data k : keys) {
if (partitionService.getPartitionId(k) == getPartitionId()) {
filteredKeys.add(k);
}
}
}
@Override
public boolean shouldBackup() {
return !filteredKeys.isEmpty();
}
@Override
public final int getSyncBackupCount() {
return cache != null ? cache.getConfig().getBackupCount() : 0;
}
@Override
public final int getAsyncBackupCount() {
return cache != null ? cache.getConfig().getAsyncBackupCount() : 0;
}
@Override
public Operation getBackupOperation() {
return new CacheRemoveAllBackupOperation(name, filteredKeys);
}
@Override
protected void writeInternal(ObjectDataOutput out) throws IOException {
super.writeInternal(out);
out.writeInt(completionId);
out.writeBoolean(keys != null);
if (keys != null) {
out.writeInt(keys.size());
for (Data key : keys) {
out.writeData(key);
}
}
}
@Override
protected void readInternal(ObjectDataInput in) throws IOException {
super.readInternal(in);
completionId = in.readInt();
boolean isKeysNotNull = in.readBoolean();
if (isKeysNotNull) {
int size = in.readInt();
keys = new HashSet(size);
for (int i = 0; i < size; i++) {
Data key = in.readData();
keys.add(key);
}
}
}
@Override
public int getId() {
return CacheDataSerializerHook.REMOVE_ALL;
}
}