hivesterix/hivesterix-runtime/src/main/java/edu/uci/ics/hivesterix/runtime/jobgen/HiveDataSourcePartitioningProvider.java

/*
 * Copyright 2009-2013 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.hivesterix.runtime.jobgen;

import java.util.LinkedList;
import java.util.List;

import edu.uci.ics.hyracks.algebricks.core.algebra.base.LogicalVariable;
import edu.uci.ics.hyracks.algebricks.core.algebra.metadata.IDataSourcePropertiesProvider;
import edu.uci.ics.hyracks.algebricks.core.algebra.properties.ILocalStructuralProperty;
import edu.uci.ics.hyracks.algebricks.core.algebra.properties.IPartitioningProperty;
import edu.uci.ics.hyracks.algebricks.core.algebra.properties.IPhysicalPropertiesVector;
import edu.uci.ics.hyracks.algebricks.core.algebra.properties.RandomPartitioningProperty;
import edu.uci.ics.hyracks.algebricks.core.algebra.properties.StructuralPropertiesVector;

public class HiveDataSourcePartitioningProvider implements IDataSourcePropertiesProvider {

    @Override
    public IPhysicalPropertiesVector computePropertiesVector(List<LogicalVariable> scanVariables) {
        IPartitioningProperty property = new RandomPartitioningProperty(new HiveDomain());
        IPhysicalPropertiesVector vector = new StructuralPropertiesVector(property,
                new LinkedList<ILocalStructuralProperty>());
        return vector;
    }
}