TPCH3L2Plan.java

/*
 * 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.debug;

import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.Map;

import org.apache.log4j.Logger;

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.expressions.ValueSpecification;
import ch.epfl.data.squall.operators.ProjectOperator;
import ch.epfl.data.squall.operators.SelectOperator;
import ch.epfl.data.squall.predicates.ComparisonPredicate;
import ch.epfl.data.squall.query_plans.QueryBuilder;
import ch.epfl.data.squall.query_plans.QueryPlan;
import ch.epfl.data.squall.types.DateType;
import ch.epfl.data.squall.types.DoubleType;
import ch.epfl.data.squall.types.NumericType;
import ch.epfl.data.squall.types.StringType;
import ch.epfl.data.squall.types.Type;

public class TPCH3L2Plan extends QueryPlan {
    private static Logger LOG = Logger.getLogger(TPCH3L2Plan.class);

    private static final String _customerMktSegment = "BUILDING";
    private static final String _dateStr = "1995-03-15";

    private static final Type<Date> _dateConv = new DateType();
    private static final NumericType<Double> _doubleConv = new DoubleType();
    private static final Type<String> _sc = new StringType();
    private static final Date _date = _dateConv.fromString(_dateStr);

    private final QueryBuilder _queryBuilder = new QueryBuilder();

    public TPCH3L2Plan(String dataPath, String extension, Map conf) {

	// -------------------------------------------------------------------------------------
	final List<Integer> hashCustomer = Arrays.asList(0);

	final SelectOperator selectionCustomer = new SelectOperator(
		new ComparisonPredicate(new ColumnReference(_sc, 6),
			new ValueSpecification(_sc, _customerMktSegment)));

	final ProjectOperator projectionCustomer = new ProjectOperator(
		new int[] { 0 });

	final DataSourceComponent relationCustomer = new DataSourceComponent(
		"CUSTOMER", dataPath + "customer" + extension)
		.setOutputPartKey(hashCustomer).add(selectionCustomer)
		.add(projectionCustomer);
	_queryBuilder.add(relationCustomer);

	// -------------------------------------------------------------------------------------
	final List<Integer> hashOrders = Arrays.asList(1);

	final SelectOperator selectionOrders = new SelectOperator(
		new ComparisonPredicate(ComparisonPredicate.LESS_OP,
			new ColumnReference(_dateConv, 4),
			new ValueSpecification(_dateConv, _date)));

	final ProjectOperator projectionOrders = new ProjectOperator(new int[] {
		0, 1, 4, 7 });

	final DataSourceComponent relationOrders = new DataSourceComponent(
		"ORDERS", dataPath + "orders" + extension)
		.setOutputPartKey(hashOrders).add(selectionOrders)
		.add(projectionOrders);
	_queryBuilder.add(relationOrders);

	EquiJoinComponent joinCustOrders = new EquiJoinComponent(
		relationCustomer, relationOrders)
		.add(new ProjectOperator(new int[] { 1, 2, 3 }))
		.setOutputPartKey(Arrays.asList(0)).setPrintOut(false);
	_queryBuilder.add(joinCustOrders);

	// -------------------------------------------------------------------------------------

    }

    @Override
    public QueryBuilder getQueryPlan() {
	return _queryBuilder;
    }
}