/*
 * 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;

public class GlobalHashingLocalityMap implements ILocalityMap {

    private static final long serialVersionUID = 1L;

    private int[] consumers;

    /* (non-Javadoc)
     * @see edu.uci.ics.hyracks.examples.text.client.aggregation.helpers.ILocalityMap#getConsumers(int)
     */
    @Override
    public int[] getConsumers(int senderID, int nConsumerPartitions) {
        if (consumers == null) {
            consumers = new int[nConsumerPartitions];
            for (int i = 0; i < consumers.length; i++) {
                consumers[i] = i;
            }
        }
        return consumers;
    }

    /* (non-Javadoc)
     * @see edu.uci.ics.hyracks.examples.text.client.aggregation.helpers.ILocalityMap#getConsumerPartitionCount()
     */
    @Override
    public int getConsumerPartitionCount(int nConsumerPartitions) {
        return nConsumerPartitions;
    }

    @Override
    public boolean isConnected(int senderID, int receiverID, int nConsumerPartitions) {
        return true;
    }

}