/*
 * Copyright 2009-2011 by The Regents of the University of California
 * 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 from
 * 
 *     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 edu.uci.ics.asterix.runtime.transaction;

import edu.uci.ics.asterix.common.context.AsterixAppRuntimeContext;
import edu.uci.ics.asterix.transaction.management.exception.ACIDException;
import edu.uci.ics.asterix.transaction.management.service.transaction.ITransactionManager;
import edu.uci.ics.asterix.transaction.management.service.transaction.TransactionContext;
import edu.uci.ics.hyracks.api.context.IHyracksTaskContext;
import edu.uci.ics.hyracks.api.dataflow.IOperatorNodePushable;
import edu.uci.ics.hyracks.api.dataflow.value.IBinaryComparatorFactory;
import edu.uci.ics.hyracks.api.dataflow.value.IRecordDescriptorProvider;
import edu.uci.ics.hyracks.api.dataflow.value.ITypeTraits;
import edu.uci.ics.hyracks.api.dataflow.value.RecordDescriptor;
import edu.uci.ics.hyracks.api.job.JobSpecification;
import edu.uci.ics.hyracks.dataflow.std.file.IFileSplitProvider;
import edu.uci.ics.hyracks.storage.am.common.api.IOperationCallbackProvider;
import edu.uci.ics.hyracks.storage.am.common.dataflow.AbstractTreeIndexOperatorDescriptor;
import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndex;
import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexDataflowHelperFactory;
import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexRegistryProvider;
import edu.uci.ics.hyracks.storage.am.common.ophelpers.IndexOp;
import edu.uci.ics.hyracks.storage.common.IStorageManagerInterface;

public class TreeIndexInsertUpdateDeleteOperatorDescriptor extends AbstractTreeIndexOperatorDescriptor {

    private static final long serialVersionUID = 1L;

    private final int[] fieldPermutation;

    private final IndexOp op;

    private final long transactionId;

    /* TODO: Index operators should live in Hyracks. Right now, they are needed here in Asterix
     * as a hack to provide transactionIDs. The Asterix verions of this operator will disappear 
     * and the operator will come from Hyracks once the LSM/Recovery/Transactions world has 
     * been introduced.
     */
    public TreeIndexInsertUpdateDeleteOperatorDescriptor(JobSpecification spec, RecordDescriptor recDesc,
            IStorageManagerInterface storageManager, IIndexRegistryProvider<IIndex> indexRegistryProvider,
            IFileSplitProvider fileSplitProvider, ITypeTraits[] typeTraits,
            IBinaryComparatorFactory[] comparatorFactories, int[] fieldPermutation, IndexOp op,
            IIndexDataflowHelperFactory dataflowHelperFactory, IOperationCallbackProvider opCallbackProvider,
            long transactionId) {
        super(spec, 1, 1, recDesc, storageManager, indexRegistryProvider, fileSplitProvider, typeTraits,
                comparatorFactories, dataflowHelperFactory, opCallbackProvider);
        this.fieldPermutation = fieldPermutation;
        this.op = op;
        this.transactionId = transactionId;
    }

    @Override
    public IOperatorNodePushable createPushRuntime(IHyracksTaskContext ctx,
            IRecordDescriptorProvider recordDescProvider, int partition, int nPartitions) {
        TransactionContext txnContext;
        try {
            ITransactionManager transactionManager = ((AsterixAppRuntimeContext) ctx.getJobletContext().getApplicationContext()
                    .getApplicationObject()).getTransactionProvider().getTransactionManager();
            txnContext = transactionManager.getTransactionContext(transactionId);
        } catch (ACIDException ae) {
            throw new RuntimeException(" could not obtain context for invalid transaction id " + transactionId);
        }
        return new TreeIndexInsertUpdateDeleteOperatorNodePushable(txnContext, this, ctx, opCallbackProvider,
                partition, fieldPermutation, recordDescProvider, op);
    }
}