| /* |
| * 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.connectors; |
| |
| import java.util.BitSet; |
| |
| public class HashtableLocalityMap implements ILocalityMap { |
| |
| private static final long serialVersionUID = 1L; |
| |
| private final BitSet nodeMap; |
| |
| public HashtableLocalityMap(BitSet nodeMap) { |
| this.nodeMap = nodeMap; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see |
| * edu.uci.ics.hyracks.examples.text.client.aggregation.helpers.ILocalityMap |
| * #getConsumers(int, int) |
| */ |
| @Override |
| public int[] getConsumers(int senderID, int nConsumerPartitions) { |
| int consumersForSender = 0; |
| // Get the count of consumers |
| for (int i = senderID * nConsumerPartitions; i < (senderID + 1) * nConsumerPartitions; i++) { |
| if (nodeMap.get(i)) |
| consumersForSender++; |
| } |
| int[] cons = new int[consumersForSender]; |
| int consIdx = 0; |
| for (int i = senderID * nConsumerPartitions; i < (senderID + 1) * nConsumerPartitions; i++) { |
| if (nodeMap.get(i)) { |
| cons[consIdx] = i - senderID * nConsumerPartitions; |
| consIdx++; |
| } |
| } |
| return cons; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see |
| * edu.uci.ics.hyracks.examples.text.client.aggregation.helpers.ILocalityMap |
| * #getConsumerPartitionCount(int) |
| */ |
| @Override |
| public int getConsumerPartitionCount(int nConsumerPartitions) { |
| return nConsumerPartitions; |
| } |
| |
| @Override |
| public boolean isConnected(int senderID, int receiverID, int nConsumerPartitions) { |
| return nodeMap.get(senderID * nConsumerPartitions + receiverID); |
| } |
| |
| } |