/*
* Copyright (c) 2008-2013, 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.multimap.impl.txn;
import com.hazelcast.core.EntryEventType;
import com.hazelcast.multimap.impl.MultiMapContainer;
import com.hazelcast.multimap.impl.MultiMapDataSerializerHook;
import com.hazelcast.multimap.impl.MultiMapRecord;
import com.hazelcast.multimap.impl.MultiMapService;
import com.hazelcast.multimap.impl.MultiMapWrapper;
import com.hazelcast.multimap.impl.operations.MultiMapKeyBasedOperation;
import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.nio.serialization.Data;
import com.hazelcast.spi.BackupAwareOperation;
import com.hazelcast.spi.Operation;
import com.hazelcast.util.Clock;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.LinkedList;
public class TxnRemoveAllOperation extends MultiMapKeyBasedOperation implements BackupAwareOperation {
Collection<Long> recordIds;
long begin = -1;
Collection<MultiMapRecord> removed;
public TxnRemoveAllOperation() {
}
public TxnRemoveAllOperation(String name, Data dataKey, Collection<MultiMapRecord> records) {
super(name, dataKey);
this.recordIds = new ArrayList<Long>();
for (MultiMapRecord record : records) {
recordIds.add(record.getRecordId());
}
}
public void run() throws Exception {
begin = Clock.currentTimeMillis();
MultiMapContainer container = getOrCreateContainer();
MultiMapWrapper wrapper = container.getOrCreateMultiMapWrapper(dataKey);
response = true;
for (Long recordId : recordIds) {
if (!wrapper.containsRecordId(recordId)) {
response = false;
return;
}
}
Collection<MultiMapRecord> coll = wrapper.getCollection(false);
removed = new LinkedList<MultiMapRecord>();
for (Long recordId : recordIds) {
Iterator<MultiMapRecord> iter = coll.iterator();
while (iter.hasNext()) {
MultiMapRecord record = iter.next();
if (record.getRecordId() == recordId) {
iter.remove();
removed.add(record);
break;
}
}
}
if (coll.isEmpty()) {
delete();
}
}
public void afterRun() throws Exception {
long elapsed = Math.max(0, Clock.currentTimeMillis() - begin);
final MultiMapService service = getService();
service.getLocalMultiMapStatsImpl(name).incrementRemoves(elapsed);
if (removed != null) {
getOrCreateContainer().update();
for (MultiMapRecord record : removed) {
publishEvent(EntryEventType.REMOVED, dataKey, record.getObject());
}
}
}
public boolean shouldBackup() {
return Boolean.TRUE.equals(response);
}
public Operation getBackupOperation() {
return new TxnRemoveAllBackupOperation(name, dataKey, recordIds);
}
public Collection<Long> getRecordIds() {
return recordIds;
}
protected void writeInternal(ObjectDataOutput out) throws IOException {
super.writeInternal(out);
out.writeInt(recordIds.size());
for (Long recordId : recordIds) {
out.writeLong(recordId);
}
}
protected void readInternal(ObjectDataInput in) throws IOException {
super.readInternal(in);
int size = in.readInt();
recordIds = new ArrayList<Long>();
for (int i = 0; i < size; i++) {
recordIds.add(in.readLong());
}
}
public int getId() {
return MultiMapDataSerializerHook.TXN_REMOVE_ALL;
}
}