| /* |
| * 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.pregelix.dataflow.std; |
| |
| import java.nio.ByteBuffer; |
| |
| import edu.uci.ics.hyracks.api.comm.IFrameWriter; |
| import edu.uci.ics.hyracks.api.context.IHyracksTaskContext; |
| import edu.uci.ics.hyracks.api.dataflow.IOperatorNodePushable; |
| import edu.uci.ics.hyracks.api.dataflow.value.IRecordDescriptorProvider; |
| 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.common.comm.io.FrameDeserializer; |
| import edu.uci.ics.hyracks.dataflow.std.base.AbstractSingleActivityOperatorDescriptor; |
| import edu.uci.ics.hyracks.dataflow.std.base.AbstractUnaryInputOperatorNodePushable; |
| import edu.uci.ics.pregelix.dataflow.std.base.IFunction; |
| import edu.uci.ics.pregelix.dataflow.std.base.IFunctionFactory; |
| import edu.uci.ics.pregelix.dataflow.std.base.IRecordDescriptorFactory; |
| import edu.uci.ics.pregelix.dataflow.std.base.IRuntimeHookFactory; |
| |
| public class FunctionCallOperatorDescriptor extends AbstractSingleActivityOperatorDescriptor { |
| private static final long serialVersionUID = 1L; |
| private final IFunctionFactory functionFactory; |
| private final IRuntimeHookFactory preHookFactory; |
| private final IRuntimeHookFactory postHookFactory; |
| private final IRecordDescriptorFactory inputRdFactory; |
| |
| public FunctionCallOperatorDescriptor(JobSpecification spec, IRecordDescriptorFactory inputRdFactory, |
| int outputArity, IFunctionFactory functionFactory, IRuntimeHookFactory preHookFactory, |
| IRuntimeHookFactory postHookFactory, RecordDescriptor... rDescs) { |
| super(spec, 1, outputArity); |
| this.functionFactory = functionFactory; |
| this.preHookFactory = preHookFactory; |
| this.postHookFactory = postHookFactory; |
| this.inputRdFactory = inputRdFactory; |
| |
| for (int i = 0; i < rDescs.length; i++) { |
| this.recordDescriptors[i] = rDescs[i]; |
| } |
| } |
| |
| @Override |
| public IOperatorNodePushable createPushRuntime(final IHyracksTaskContext ctx, |
| final IRecordDescriptorProvider recordDescProvider, int partition, int nPartitions) |
| throws HyracksDataException { |
| return new AbstractUnaryInputOperatorNodePushable() { |
| private RecordDescriptor rd0; |
| private FrameDeserializer frameDeserializer; |
| private final IFrameWriter[] writers = new IFrameWriter[outputArity]; |
| private final IFunction function = functionFactory.createFunction(); |
| private ClassLoader ctxCL = Thread.currentThread().getContextClassLoader(); |
| |
| @Override |
| public void open() throws HyracksDataException { |
| rd0 = inputRdFactory == null ? recordDescProvider.getInputRecordDescriptor(getActivityId(), 0) |
| : inputRdFactory.createRecordDescriptor(ctx); |
| frameDeserializer = new FrameDeserializer(ctx.getFrameSize(), rd0); |
| ctxCL = Thread.currentThread().getContextClassLoader(); |
| Thread.currentThread().setContextClassLoader(this.getClass().getClassLoader()); |
| for (IFrameWriter writer : writers) { |
| writer.open(); |
| } |
| if (preHookFactory != null) |
| preHookFactory.createRuntimeHook().configure(ctx); |
| function.open(ctx, rd0, writers); |
| } |
| |
| @Override |
| public void nextFrame(ByteBuffer frame) throws HyracksDataException { |
| frameDeserializer.reset(frame); |
| while (!frameDeserializer.done()) { |
| Object[] tuple = frameDeserializer.deserializeRecord(); |
| function.process(tuple); |
| } |
| } |
| |
| @Override |
| public void close() throws HyracksDataException { |
| if (postHookFactory != null) |
| postHookFactory.createRuntimeHook().configure(ctx); |
| function.close(); |
| for (IFrameWriter writer : writers) { |
| writer.close(); |
| } |
| Thread.currentThread().setContextClassLoader(ctxCL); |
| } |
| |
| @Override |
| public void fail() throws HyracksDataException { |
| for (IFrameWriter writer : writers) { |
| writer.fail(); |
| } |
| } |
| |
| @Override |
| public void setOutputFrameWriter(int index, IFrameWriter writer, RecordDescriptor recordDesc) { |
| writers[index] = writer; |
| } |
| }; |
| } |
| } |