/*
 * Copyright (c) 2011-2015 EPFL DATA Laboratory
 * Copyright (c) 2014-2015 The Squall Collaboration (see NOTICE)
 *
 * All rights reserved.
 *
 * 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 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 ch.epfl.data.squall.examples.imperative.shj;

import java.util.Map;

import ch.epfl.data.squall.components.Component;
import ch.epfl.data.squall.components.DataSourceComponent;
import ch.epfl.data.squall.components.EquiJoinComponent;
import ch.epfl.data.squall.expressions.ColumnReference;
import ch.epfl.data.squall.operators.AggregateCountOperator;
import ch.epfl.data.squall.operators.ProjectOperator;
import ch.epfl.data.squall.predicates.ComparisonPredicate;
import ch.epfl.data.squall.query_plans.QueryPlan;
import ch.epfl.data.squall.types.IntegerType;

public class HyracksPlan extends QueryPlan {

    public HyracksPlan(String dataPath, String extension, Map conf) {
        super(dataPath, extension, conf);
    }

    @Override
    public Component createQueryPlan(String dataPath, String extension, Map conf) {
        // -------------------------------------------------------------------------------------
        Component customer = new DataSourceComponent("customer", conf)
                .add(new ProjectOperator(0, 6)); // CUSTKEY, MKTSEGMENT

        // -------------------------------------------------------------------------------------
        Component orders = new DataSourceComponent("orders", conf)
                .add(new ProjectOperator(1)); // CUSTKEY 

        // -------------------------------------------------------------------------------------
        Component custOrders = new EquiJoinComponent(customer, 0, orders, 0) // join on CUSTKEY (index 0 from each component)
                .add(new AggregateCountOperator(conf).setGroupByColumns(1)); // group by MKTSEGMENT (index 1 on concatenation of fields: customer, orders) 
        return custOrders;
        // -------------------------------------------------------------------------------------
    }
}