/*
 * 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.hyracks.algebricks.core.algebra.operators.physical;

import java.util.ArrayList;
import java.util.List;

import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException;
import org.apache.hyracks.algebricks.core.algebra.base.IHyracksJobBuilder;
import org.apache.hyracks.algebricks.core.algebra.base.ILogicalOperator;
import org.apache.hyracks.algebricks.core.algebra.base.IOptimizationContext;
import org.apache.hyracks.algebricks.core.algebra.base.PhysicalOperatorTag;
import org.apache.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator;
import org.apache.hyracks.algebricks.core.algebra.operators.logical.IOperatorSchema;
import org.apache.hyracks.algebricks.core.algebra.properties.ILocalStructuralProperty;
import org.apache.hyracks.algebricks.core.algebra.properties.IPhysicalPropertiesVector;
import org.apache.hyracks.algebricks.core.algebra.properties.PhysicalRequirements;
import org.apache.hyracks.algebricks.core.algebra.properties.StructuralPropertiesVector;
import org.apache.hyracks.algebricks.core.jobgen.impl.JobGenContext;
import org.apache.hyracks.dataflow.std.misc.SinkOperatorDescriptor;
import org.apache.hyracks.api.job.IOperatorDescriptorRegistry;

public class SinkPOperator extends AbstractPhysicalOperator {

    @Override
    public PhysicalOperatorTag getOperatorTag() {
        return PhysicalOperatorTag.SINK;
    }

    @Override
    public boolean isMicroOperator() {
        return false;
    }

    @Override
    public void computeDeliveredProperties(ILogicalOperator op, IOptimizationContext context) {
        AbstractLogicalOperator op2;
        List<ILocalStructuralProperty> propsLocal = new ArrayList<ILocalStructuralProperty>();
        IPhysicalPropertiesVector childsProperties = null;

        for (int i = 0; i < op.getInputs().size(); i++) {
            op2 = (AbstractLogicalOperator) op.getInputs().get(i).getValue();
            childsProperties = op2.getPhysicalOperator().getDeliveredProperties();
            if (childsProperties.getLocalProperties() != null) {
                propsLocal.addAll(childsProperties.getLocalProperties());
            }
        }

        deliveredProperties = new StructuralPropertiesVector(childsProperties.getPartitioningProperty(), propsLocal);
    }

    @Override
    public PhysicalRequirements getRequiredPropertiesForChildren(ILogicalOperator op,
            IPhysicalPropertiesVector reqdByParent, IOptimizationContext context) {
      return emptyUnaryRequirements(op.getInputs().size());
    }

    @Override
    public void contributeRuntimeOperator(IHyracksJobBuilder builder, JobGenContext context, ILogicalOperator op,
            IOperatorSchema propagatedSchema, IOperatorSchema[] inputSchemas, IOperatorSchema outerPlanSchema)
            throws AlgebricksException {

        IOperatorDescriptorRegistry spec = builder.getJobSpec();

        SinkOperatorDescriptor opDesc = new SinkOperatorDescriptor(spec, op.getInputs().size());
        contributeOpDesc(builder, (AbstractLogicalOperator) op, opDesc);

        for (int i = 0; i < op.getInputs().size(); i++) {
            builder.contributeGraphEdge(op.getInputs().get(i).getValue(), 0, op, i);
        }
    }

    @Override
    public boolean expensiveThanMaterialization() {
        return false;
    }
}
