| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 at |
| * |
| * 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 org.apache.asterix.runtime.operators.joins.intervalpartition; |
| |
| import org.apache.asterix.runtime.operators.joins.IntervalJoinUtil; |
| import org.apache.hyracks.api.comm.IFrameTupleAccessor; |
| import org.apache.hyracks.api.dataflow.value.ITuplePartitionComputer; |
| import org.apache.hyracks.api.dataflow.value.ITuplePartitionComputerFactory; |
| import org.apache.hyracks.api.exceptions.HyracksDataException; |
| |
| public class IntervalPartitionComputerFactory implements ITuplePartitionComputerFactory { |
| private static final long serialVersionUID = 1L; |
| private final int intervalFieldId; |
| private final int k; |
| private final long partitionStart; |
| private final long partitionDuration; |
| |
| public IntervalPartitionComputerFactory(int intervalFieldId, int k, long partitionStart, long partitionEnd) |
| throws HyracksDataException { |
| this.intervalFieldId = intervalFieldId; |
| this.k = k; |
| this.partitionStart = partitionStart; |
| this.partitionDuration = IntervalPartitionUtil.getPartitionDuration(partitionStart, partitionEnd, k); |
| } |
| |
| @Override |
| public ITuplePartitionComputer createPartitioner() { |
| return new ITuplePartitionComputer() { |
| @Override |
| public int partition(IFrameTupleAccessor accessor, int tIndex, int nPartitions) |
| throws HyracksDataException { |
| int partitionI = getIntervalPartitionI(accessor, tIndex, intervalFieldId); |
| int partitionJ = getIntervalPartitionJ(accessor, tIndex, intervalFieldId); |
| return IntervalPartitionUtil.intervalPartitionMap(partitionI, partitionJ, k); |
| } |
| |
| private int getIntervalPartition(long point) throws HyracksDataException { |
| return IntervalPartitionUtil.getIntervalPartition(point, partitionStart, partitionDuration, k); |
| } |
| |
| public int getIntervalPartitionI(IFrameTupleAccessor accessor, int tIndex, int fieldId) |
| throws HyracksDataException { |
| return getIntervalPartition(IntervalJoinUtil.getIntervalStart(accessor, tIndex, fieldId)); |
| } |
| |
| public int getIntervalPartitionJ(IFrameTupleAccessor accessor, int tIndex, int fieldId) |
| throws HyracksDataException { |
| return getIntervalPartition(IntervalJoinUtil.getIntervalEnd(accessor, tIndex, fieldId)); |
| } |
| |
| }; |
| } |
| |
| } |