com.hazelcast.multimap.txn.TxnCommitOperation Maven / Gradle / Ivy

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/*
 * 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.txn;

import com.hazelcast.multimap.MultiMapDataSerializerHook;
import com.hazelcast.multimap.MultiMapWrapper;
import com.hazelcast.multimap.operations.MultiMapBackupAwareOperation;
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.Notifier;
import com.hazelcast.spi.Operation;
import com.hazelcast.spi.WaitNotifyKey;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class TxnCommitOperation extends MultiMapBackupAwareOperation implements Notifier {

    List opList;
    long version;
    boolean notify = true;

    public TxnCommitOperation() {
    }

    public TxnCommitOperation(String name, Data dataKey, long threadId, long version, List opList) {
        super(name, dataKey, threadId);
        this.version = version;
        this.opList = opList;
    }

    public void run() throws Exception {
        MultiMapWrapper wrapper = getCollectionWrapper();
        if (wrapper == null || wrapper.getVersion() != version) {
            notify = false;
            return;
        }
        wrapper.incrementAndGetVersion();
        for (Operation op : opList) {
            op.setNodeEngine(getNodeEngine()).setServiceName(getServiceName()).setPartitionId(getPartitionId());
            op.beforeRun();
            op.run();
            op.afterRun();
        }
        getOrCreateContainer().unlock(dataKey, getCallerUuid(), threadId);
    }

    public boolean shouldBackup() {
        return notify;
    }

    public Operation getBackupOperation() {
        List backupOpList = new ArrayList();
        for (Operation operation : opList) {
            if (operation instanceof BackupAwareOperation) {
                BackupAwareOperation backupAwareOperation = (BackupAwareOperation) operation;
                if (backupAwareOperation.shouldBackup()) {
                    backupOpList.add(backupAwareOperation.getBackupOperation());
                }
            }
        }
        return new TxnCommitBackupOperation(name, dataKey, backupOpList, getCallerUuid(), threadId);
    }

    public boolean shouldNotify() {
        return notify;
    }

    public WaitNotifyKey getNotifiedKey() {
        return getWaitKey();
    }

    protected void writeInternal(ObjectDataOutput out) throws IOException {
        super.writeInternal(out);
        out.writeLong(version);
        out.writeInt(opList.size());
        for (Operation op : opList) {
            out.writeObject(op);
        }
    }

    protected void readInternal(ObjectDataInput in) throws IOException {
        super.readInternal(in);
        version = in.readLong();
        int size = in.readInt();
        opList = new ArrayList(size);
        for (int i = 0; i < size; i++) {
            opList.add((Operation) in.readObject());
        }
    }

    public int getId() {
        return MultiMapDataSerializerHook.TXN_COMMIT;
    }
}