hyracks/hyracks-storage-am-lsm-btree/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/btree/dataflow/ExternalBTreeWithBuddyDataflowHelperFactory.java

/*
 * Copyright 2009-2013 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.hyracks.storage.am.lsm.btree.dataflow;

import java.util.Map;

import edu.uci.ics.hyracks.api.context.IHyracksTaskContext;
import edu.uci.ics.hyracks.storage.am.common.api.IIndexDataflowHelper;
import edu.uci.ics.hyracks.storage.am.common.dataflow.IIndexOperatorDescriptor;
import edu.uci.ics.hyracks.storage.am.lsm.common.api.ILSMIOOperationCallbackFactory;
import edu.uci.ics.hyracks.storage.am.lsm.common.api.ILSMIOOperationSchedulerProvider;
import edu.uci.ics.hyracks.storage.am.lsm.common.api.ILSMMergePolicyFactory;
import edu.uci.ics.hyracks.storage.am.lsm.common.api.ILSMOperationTrackerProvider;
import edu.uci.ics.hyracks.storage.am.lsm.common.dataflow.AbstractLSMIndexDataflowHelperFactory;

public class ExternalBTreeWithBuddyDataflowHelperFactory extends AbstractLSMIndexDataflowHelperFactory {

    private static final long serialVersionUID = 1L;
    private final int[] buddyBtreeFields;
    private int version;

    public ExternalBTreeWithBuddyDataflowHelperFactory(ILSMMergePolicyFactory mergePolicyFactory,
            Map<String, String> mergePolicyProperties, ILSMOperationTrackerProvider opTrackerFactory,
            ILSMIOOperationSchedulerProvider ioSchedulerProvider, ILSMIOOperationCallbackFactory ioOpCallbackFactory,
            double bloomFilterFalsePositiveRate, int[] buddyBtreeFields, int version) {
        super(null, mergePolicyFactory, mergePolicyProperties, opTrackerFactory, ioSchedulerProvider,
                ioOpCallbackFactory, bloomFilterFalsePositiveRate, null, null, null);
        this.buddyBtreeFields = buddyBtreeFields;
        this.version = version;
    }

    @Override
    public IIndexDataflowHelper createIndexDataflowHelper(IIndexOperatorDescriptor opDesc, IHyracksTaskContext ctx,
            int partition) {
        return new ExternalBTreeWithBuddyDataflowHelper(opDesc, ctx, partition, bloomFilterFalsePositiveRate,
                mergePolicyFactory.createMergePolicy(mergePolicyProperties), opTrackerFactory,
                ioSchedulerProvider.getIOScheduler(ctx), ioOpCallbackFactory, buddyBtreeFields, version);
    }

}