/*
* 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.Arrays;
import java.util.Calendar;
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.DateSum;
import ch.epfl.data.squall.expressions.Multiplication;
import ch.epfl.data.squall.expressions.Subtraction;
import ch.epfl.data.squall.expressions.ValueExpression;
import ch.epfl.data.squall.expressions.ValueSpecification;
import ch.epfl.data.squall.operators.AggregateOperator;
import ch.epfl.data.squall.operators.AggregateSumOperator;
import ch.epfl.data.squall.operators.ProjectOperator;
import ch.epfl.data.squall.operators.SelectOperator;
import ch.epfl.data.squall.predicates.BetweenPredicate;
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 TPCH10Plan extends QueryPlan {
private static void computeDates() {
// date2= date1 + 3 months
final String date1Str = "1993-10-01";
final int interval = 3;
final int unit = Calendar.MONTH;
// setting _date1
_date1 = _dc.fromString(date1Str);
// setting _date2
ValueExpression<Date> date1Ve, date2Ve;
date1Ve = new ValueSpecification<Date>(_dc, _date1);
date2Ve = new DateSum(date1Ve, unit, interval);
_date2 = date2Ve.eval(null);
// tuple is set to null since we are computing based on constants
}
private static Logger LOG = Logger.getLogger(TPCH10Plan.class);
private static final Type<Date> _dc = new DateType();
private static final NumericType<Double> _doubleConv = new DoubleType();
private static final StringType _sc = new StringType();
private final QueryBuilder _queryBuilder = new QueryBuilder();
// query variables
private static Date _date1, _date2;
public TPCH10Plan(String dataPath, String extension, Map conf) {
computeDates();
// -------------------------------------------------------------------------------------
final List<Integer> hashCustomer = Arrays.asList(0);
final ProjectOperator projectionCustomer = new ProjectOperator(
new int[] { 0, 1, 2, 3, 4, 5, 7 });
final DataSourceComponent relationCustomer = new DataSourceComponent(
"CUSTOMER", dataPath + "customer" + extension)
.setOutputPartKey(hashCustomer).add(projectionCustomer);
_queryBuilder.add(relationCustomer);
// -------------------------------------------------------------------------------------
final List<Integer> hashOrders = Arrays.asList(1);
final SelectOperator selectionOrders = new SelectOperator(
new BetweenPredicate(new ColumnReference(_dc, 4), true,
new ValueSpecification(_dc, _date1), false,
new ValueSpecification(_dc, _date2)));
final ProjectOperator projectionOrders = new ProjectOperator(new int[] {
0, 1 });
final DataSourceComponent relationOrders = new DataSourceComponent(
"ORDERS", dataPath + "orders" + extension)
.setOutputPartKey(hashOrders).add(selectionOrders)
.add(projectionOrders);
_queryBuilder.add(relationOrders);
// -------------------------------------------------------------------------------------
final EquiJoinComponent C_Ojoin = new EquiJoinComponent(
relationCustomer, relationOrders).setOutputPartKey(Arrays
.asList(3));
_queryBuilder.add(C_Ojoin);
// -------------------------------------------------------------------------------------
final List<Integer> hashNation = Arrays.asList(0);
final ProjectOperator projectionNation = new ProjectOperator(new int[] {
0, 1 });
final DataSourceComponent relationNation = new DataSourceComponent(
"NATION", dataPath + "nation" + extension).setOutputPartKey(
hashNation).add(projectionNation);
_queryBuilder.add(relationNation);
// -------------------------------------------------------------------------------------
final EquiJoinComponent C_O_Njoin = new EquiJoinComponent(C_Ojoin,
relationNation).add(
new ProjectOperator(new int[] { 0, 1, 2, 4, 5, 6, 7, 8 }))
.setOutputPartKey(Arrays.asList(6));
_queryBuilder.add(C_O_Njoin);
// -------------------------------------------------------------------------------------
final List<Integer> hashLineitem = Arrays.asList(0);
final SelectOperator selectionLineitem = new SelectOperator(
new ComparisonPredicate(new ColumnReference(_sc, 8),
new ValueSpecification(_sc, "R")));
final ProjectOperator projectionLineitem = new ProjectOperator(
new int[] { 0, 5, 6 });
final DataSourceComponent relationLineitem = new DataSourceComponent(
"LINEITEM", dataPath + "lineitem" + extension)
.setOutputPartKey(hashLineitem).add(selectionLineitem)
.add(projectionLineitem);
_queryBuilder.add(relationLineitem);
// -------------------------------------------------------------------------------------
// set up aggregation function on the StormComponent(Bolt) where join is
// performed
// 1 - discount
final ValueExpression<Double> substract = new Subtraction(
new ValueSpecification(_doubleConv, 1.0), new ColumnReference(
_doubleConv, 8));
// extendedPrice*(1-discount)
final ValueExpression<Double> product = new Multiplication(
new ColumnReference(_doubleConv, 7), substract);
final AggregateOperator agg = new AggregateSumOperator(product, conf)
.setGroupByColumns(Arrays.asList(0, 1, 4, 6, 2, 3, 5));
EquiJoinComponent finalComp = new EquiJoinComponent(C_O_Njoin,
relationLineitem).add(
new ProjectOperator(new int[] { 0, 1, 2, 3, 4, 5, 7, 8, 9 }))
.add(agg);
_queryBuilder.add(finalComp);
}
@Override
public QueryBuilder getQueryPlan() {
return _queryBuilder;
}
}