| /* |
| * 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.group.preclustered; |
| |
| import edu.uci.ics.hyracks.api.context.IHyracksTaskContext; |
| import edu.uci.ics.hyracks.api.dataflow.IOperatorNodePushable; |
| import edu.uci.ics.hyracks.api.dataflow.value.IBinaryComparatorFactory; |
| 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.IOperatorDescriptorRegistry; |
| import edu.uci.ics.hyracks.dataflow.std.base.AbstractSingleActivityOperatorDescriptor; |
| import edu.uci.ics.hyracks.dataflow.std.group.IAggregatorDescriptorFactory; |
| |
| public class PreclusteredGroupOperatorDescriptor extends AbstractSingleActivityOperatorDescriptor { |
| private final int[] groupFields; |
| private final IBinaryComparatorFactory[] comparatorFactories; |
| private final IAggregatorDescriptorFactory aggregatorFactory; |
| |
| private static final long serialVersionUID = 1L; |
| |
| public PreclusteredGroupOperatorDescriptor(IOperatorDescriptorRegistry spec, int[] groupFields, |
| IBinaryComparatorFactory[] comparatorFactories, IAggregatorDescriptorFactory aggregatorFactory, |
| RecordDescriptor recordDescriptor) { |
| super(spec, 1, 1); |
| this.groupFields = groupFields; |
| this.comparatorFactories = comparatorFactories; |
| this.aggregatorFactory = aggregatorFactory; |
| recordDescriptors[0] = recordDescriptor; |
| } |
| |
| @Override |
| public IOperatorNodePushable createPushRuntime(final IHyracksTaskContext ctx, |
| final IRecordDescriptorProvider recordDescProvider, int partition, int nPartitions) |
| throws HyracksDataException { |
| return new PreclusteredGroupOperatorNodePushable(ctx, groupFields, comparatorFactories, aggregatorFactory, |
| recordDescProvider.getInputRecordDescriptor(getActivityId(), 0), recordDescriptors[0]); |
| } |
| } |