| /* |
| * 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.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.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.IConnectorDescriptorRegistry; |
| import edu.uci.ics.hyracks.dataflow.std.base.AbstractMToNConnectorDescriptor; |
| import edu.uci.ics.hyracks.dataflow.std.collectors.NonDeterministicChannelReader; |
| import edu.uci.ics.hyracks.dataflow.std.collectors.NonDeterministicFrameReader; |
| import edu.uci.ics.hyracks.dataflow.std.collectors.PartitionCollector; |
| |
| public class LocalityAwareMToNPartitioningConnectorDescriptor extends AbstractMToNConnectorDescriptor { |
| |
| private static final long serialVersionUID = 1L; |
| |
| private ILocalityMap localityMap; |
| |
| private ITuplePartitionComputerFactory tpcf; |
| |
| public LocalityAwareMToNPartitioningConnectorDescriptor(IConnectorDescriptorRegistry spec, ITuplePartitionComputerFactory tpcf, |
| ILocalityMap localityMap) { |
| super(spec); |
| this.localityMap = localityMap; |
| this.tpcf = tpcf; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see |
| * edu.uci.ics.hyracks.api.dataflow.IConnectorDescriptor#createPartitioner |
| * (edu.uci.ics.hyracks.api.context.IHyracksTaskContext, |
| * edu.uci.ics.hyracks.api.dataflow.value.RecordDescriptor, |
| * edu.uci.ics.hyracks.api.comm.IPartitionWriterFactory, int, int, int) |
| */ |
| @Override |
| public IFrameWriter createPartitioner(IHyracksTaskContext ctx, RecordDescriptor recordDesc, |
| IPartitionWriterFactory edwFactory, int index, int nProducerPartitions, int nConsumerPartitions) |
| throws HyracksDataException { |
| return new LocalityAwarePartitionDataWriter(ctx, edwFactory, recordDesc, tpcf.createPartitioner(), |
| nConsumerPartitions, localityMap, index); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see edu.uci.ics.hyracks.api.dataflow.IConnectorDescriptor# |
| * createPartitionCollector |
| * (edu.uci.ics.hyracks.api.context.IHyracksTaskContext, |
| * edu.uci.ics.hyracks.api.dataflow.value.RecordDescriptor, int, int, int) |
| */ |
| @Override |
| public IPartitionCollector createPartitionCollector(IHyracksTaskContext ctx, RecordDescriptor recordDesc, |
| int receiverIndex, int nProducerPartitions, int nConsumerPartitions) throws HyracksDataException { |
| BitSet expectedPartitions = new BitSet(nProducerPartitions); |
| for (int i = 0; i < nProducerPartitions; i++) { |
| if (localityMap.isConnected(i, receiverIndex, nConsumerPartitions)) |
| expectedPartitions.set(i); |
| } |
| NonDeterministicChannelReader channelReader = new NonDeterministicChannelReader(nProducerPartitions, |
| expectedPartitions); |
| NonDeterministicFrameReader frameReader = new NonDeterministicFrameReader(channelReader); |
| return new PartitionCollector(ctx, getConnectorId(), receiverIndex, expectedPartitions, frameReader, |
| channelReader); |
| } |
| |
| } |