| /* |
| * 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.misc; |
| |
| 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.std.base.AbstractSingleActivityOperatorDescriptor; |
| |
| public class ConstantTupleSourceOperatorDescriptor extends AbstractSingleActivityOperatorDescriptor { |
| |
| private static final long serialVersionUID = 1L; |
| |
| private int[] fieldSlots; |
| private byte[] tupleData; |
| private int tupleSize; |
| |
| public ConstantTupleSourceOperatorDescriptor(JobSpecification spec, RecordDescriptor recDesc, int[] fieldSlots, |
| byte[] tupleData, int tupleSize) { |
| super(spec, 0, 1); |
| this.tupleData = tupleData; |
| this.fieldSlots = fieldSlots; |
| this.tupleSize = tupleSize; |
| recordDescriptors[0] = recDesc; |
| } |
| |
| @Override |
| public IOperatorNodePushable createPushRuntime(IHyracksTaskContext ctx, |
| IRecordDescriptorProvider recordDescProvider, int partition, int nPartitions) throws HyracksDataException { |
| return new ConstantTupleSourceOperatorNodePushable(ctx, fieldSlots, tupleData, tupleSize); |
| } |
| } |