| /* |
| * Copyright 2009-2010 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.dataflow.std.connectors; |
| |
| import java.util.BitSet; |
| |
| import edu.uci.ics.hyracks.api.comm.IFrameReader; |
| import edu.uci.ics.hyracks.api.comm.IFrameWriter; |
| import edu.uci.ics.hyracks.api.comm.IPartitionCollector; |
| import edu.uci.ics.hyracks.api.comm.IPartitionWriterFactory; |
| import edu.uci.ics.hyracks.api.context.IHyracksTaskContext; |
| import edu.uci.ics.hyracks.api.dataflow.value.IBinaryComparator; |
| import edu.uci.ics.hyracks.api.dataflow.value.IBinaryComparatorFactory; |
| import edu.uci.ics.hyracks.api.dataflow.value.ITuplePartitionComputerFactory; |
| import edu.uci.ics.hyracks.api.dataflow.value.RecordDescriptor; |
| import edu.uci.ics.hyracks.api.exceptions.HyracksDataException; |
| import edu.uci.ics.hyracks.api.job.JobSpecification; |
| import edu.uci.ics.hyracks.dataflow.std.base.AbstractMToNConnectorDescriptor; |
| import edu.uci.ics.hyracks.dataflow.std.collectors.IPartitionBatchManager; |
| import edu.uci.ics.hyracks.dataflow.std.collectors.NonDeterministicPartitionBatchManager; |
| import edu.uci.ics.hyracks.dataflow.std.collectors.PartitionCollector; |
| import edu.uci.ics.hyracks.dataflow.std.collectors.SortMergeFrameReader; |
| |
| public class MToNPartitioningMergingConnectorDescriptor extends AbstractMToNConnectorDescriptor { |
| private static final long serialVersionUID = 1L; |
| |
| private final ITuplePartitionComputerFactory tpcf; |
| private final int[] sortFields; |
| private final IBinaryComparatorFactory[] comparatorFactories; |
| private final boolean stable; |
| |
| public MToNPartitioningMergingConnectorDescriptor(JobSpecification spec, ITuplePartitionComputerFactory tpcf, |
| int[] sortFields, IBinaryComparatorFactory[] comparatorFactories) { |
| this(spec, tpcf, sortFields, comparatorFactories, false); |
| } |
| |
| public MToNPartitioningMergingConnectorDescriptor(JobSpecification spec, ITuplePartitionComputerFactory tpcf, |
| int[] sortFields, IBinaryComparatorFactory[] comparatorFactories, boolean stable) { |
| super(spec); |
| this.tpcf = tpcf; |
| this.sortFields = sortFields; |
| this.comparatorFactories = comparatorFactories; |
| this.stable = stable; |
| } |
| |
| @Override |
| public IFrameWriter createPartitioner(IHyracksTaskContext ctx, RecordDescriptor recordDesc, |
| IPartitionWriterFactory edwFactory, int index, int nProducerPartitions, int nConsumerPartitions) |
| throws HyracksDataException { |
| final PartitionDataWriter hashWriter = new PartitionDataWriter(ctx, nConsumerPartitions, edwFactory, |
| recordDesc, tpcf.createPartitioner()); |
| return hashWriter; |
| } |
| |
| @Override |
| public IPartitionCollector createPartitionCollector(IHyracksTaskContext ctx, RecordDescriptor recordDesc, |
| int index, int nProducerPartitions, int nConsumerPartitions) throws HyracksDataException { |
| IBinaryComparator[] comparators = new IBinaryComparator[comparatorFactories.length]; |
| for (int i = 0; i < comparatorFactories.length; ++i) { |
| comparators[i] = comparatorFactories[i].createBinaryComparator(); |
| } |
| IPartitionBatchManager pbm = new NonDeterministicPartitionBatchManager(nProducerPartitions); |
| IFrameReader sortMergeFrameReader = new SortMergeFrameReader(ctx, nProducerPartitions, nProducerPartitions, |
| sortFields, comparators, recordDesc, pbm); |
| BitSet expectedPartitions = new BitSet(); |
| expectedPartitions.set(0, nProducerPartitions); |
| return new PartitionCollector(ctx, getConnectorId(), index, expectedPartitions, sortMergeFrameReader, pbm); |
| } |
| } |