Implement a basic ResultWriterOperatorDescriptor.
This operator just delegates all the work to dataset partition writer
after obtaining it from dataset partition manager in the open method.
git-svn-id: https://hyracks.googlecode.com/svn/branches/fullstack_hyracks_result_distribution@2473 123451ca-8445-de46-9d55-352943316053
diff --git a/hyracks/hyracks-dataflow-std/src/main/java/edu/uci/ics/hyracks/dataflow/std/result/ResultWriterOperatorDescriptor.java b/hyracks/hyracks-dataflow-std/src/main/java/edu/uci/ics/hyracks/dataflow/std/result/ResultWriterOperatorDescriptor.java
new file mode 100644
index 0000000..5c8a0c2
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+++ b/hyracks/hyracks-dataflow-std/src/main/java/edu/uci/ics/hyracks/dataflow/std/result/ResultWriterOperatorDescriptor.java
@@ -0,0 +1,67 @@
+/*
+ * 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.result;
+
+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.dataset.IDatasetPartitionManager;
+import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
+import edu.uci.ics.hyracks.api.job.IOperatorDescriptorRegistry;
+import edu.uci.ics.hyracks.api.job.JobId;
+import edu.uci.ics.hyracks.dataflow.std.base.AbstractSingleActivityOperatorDescriptor;
+import edu.uci.ics.hyracks.dataflow.std.base.AbstractUnaryInputSinkOperatorNodePushable;
+
+public class ResultWriterOperatorDescriptor extends AbstractSingleActivityOperatorDescriptor {
+ private static final long serialVersionUID = 1L;
+
+ public ResultWriterOperatorDescriptor(IOperatorDescriptorRegistry spec) {
+ super(spec, 1, 0);
+ }
+
+ @Override
+ public IOperatorNodePushable createPushRuntime(IHyracksTaskContext ctx,
+ IRecordDescriptorProvider recordDescProvider, final int partition, final int nPartitions) {
+ final JobId jobId = ctx.getJobletContext().getJobId();
+ final IDatasetPartitionManager dpm = ctx.getDatasetPartitionManager();
+
+ return new AbstractUnaryInputSinkOperatorNodePushable() {
+ IFrameWriter datasetPartitionWriter;
+
+ @Override
+ public void open() throws HyracksDataException {
+ datasetPartitionWriter = dpm.createDatasetPartitionWriter(jobId, partition, nPartitions);
+ }
+
+ @Override
+ public void nextFrame(ByteBuffer buffer) throws HyracksDataException {
+ datasetPartitionWriter.nextFrame(buffer);
+ }
+
+ @Override
+ public void fail() throws HyracksDataException {
+ datasetPartitionWriter.fail();
+ }
+
+ @Override
+ public void close() throws HyracksDataException {
+ datasetPartitionWriter.close();
+ }
+ };
+ }
+}
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