| /* |
| * 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.nio.ByteBuffer; |
| 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.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.NonDeterministicPartitionCollector; |
| |
| public class MToNReplicatingConnectorDescriptor extends AbstractMToNConnectorDescriptor { |
| public MToNReplicatingConnectorDescriptor(JobSpecification spec) { |
| super(spec); |
| } |
| |
| private static final long serialVersionUID = 1L; |
| |
| @Override |
| public IFrameWriter createPartitioner(IHyracksTaskContext ctx, RecordDescriptor recordDesc, |
| IPartitionWriterFactory edwFactory, int index, int nProducerPartitions, int nConsumerPartitions) |
| throws HyracksDataException { |
| final IFrameWriter[] epWriters = new IFrameWriter[nConsumerPartitions]; |
| for (int i = 0; i < nConsumerPartitions; ++i) { |
| epWriters[i] = edwFactory.createFrameWriter(i); |
| } |
| return new IFrameWriter() { |
| @Override |
| public void nextFrame(ByteBuffer buffer) throws HyracksDataException { |
| buffer.mark(); |
| for (int i = 0; i < epWriters.length; ++i) { |
| if (i != 0) { |
| buffer.reset(); |
| } |
| epWriters[i].nextFrame(buffer); |
| } |
| } |
| |
| @Override |
| public void fail() throws HyracksDataException { |
| for (int i = 0; i < epWriters.length; ++i) { |
| epWriters[i].fail(); |
| } |
| } |
| |
| @Override |
| public void close() throws HyracksDataException { |
| for (int i = 0; i < epWriters.length; ++i) { |
| epWriters[i].close(); |
| } |
| } |
| |
| @Override |
| public void open() throws HyracksDataException { |
| for (int i = 0; i < epWriters.length; ++i) { |
| epWriters[i].open(); |
| } |
| } |
| }; |
| } |
| |
| @Override |
| public IPartitionCollector createPartitionCollector(IHyracksTaskContext ctx, RecordDescriptor recordDesc, |
| int index, int nProducerPartitions, int nConsumerPartitions) throws HyracksDataException { |
| BitSet expectedPartitions = new BitSet(nProducerPartitions); |
| expectedPartitions.set(0, nProducerPartitions); |
| return new NonDeterministicPartitionCollector(ctx, getConnectorId(), index, nProducerPartitions, |
| expectedPartitions); |
| } |
| } |