/*
* 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.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.components.OperatorComponent;
import ch.epfl.data.squall.expressions.ColumnReference;
import ch.epfl.data.squall.expressions.ValueSpecification;
import ch.epfl.data.squall.operators.AggregateCountOperator;
import ch.epfl.data.squall.operators.AggregateSumOperator;
import ch.epfl.data.squall.operators.ProjectOperator;
import ch.epfl.data.squall.query_plans.QueryBuilder;
import ch.epfl.data.squall.query_plans.QueryPlan;
import ch.epfl.data.squall.storage.AggregationStore;
import ch.epfl.data.squall.types.DoubleType;
import ch.epfl.data.squall.types.LongType;
import ch.epfl.data.squall.types.StringType;
public class HyracksPreAggPlan extends QueryPlan {
private static Logger LOG = Logger.getLogger(HyracksPreAggPlan.class);
private final QueryBuilder _queryBuilder = new QueryBuilder();
private static final DoubleType _dc = new DoubleType();
private static final StringType _sc = new StringType();
private static final LongType _lc = new LongType();
public HyracksPreAggPlan(String dataPath, String extension, Map conf) {
// -------------------------------------------------------------------------------------
// start of query plan filling
final ProjectOperator projectionCustomer = new ProjectOperator(
new int[] { 0, 6 });
final List<Integer> hashCustomer = Arrays.asList(0);
final DataSourceComponent relationCustomer = new DataSourceComponent(
"CUSTOMER", dataPath + "customer" + extension).add(
projectionCustomer).setOutputPartKey(hashCustomer);
_queryBuilder.add(relationCustomer);
// -------------------------------------------------------------------------------------
final ProjectOperator projectionOrders = new ProjectOperator(
new int[] { 1 });
final List<Integer> hashOrders = Arrays.asList(0);
final DataSourceComponent relationOrders = new DataSourceComponent(
"ORDERS", dataPath + "orders" + extension)
.add(projectionOrders).setOutputPartKey(hashOrders);
_queryBuilder.add(relationOrders);
// -------------------------------------------------------------------------------------
final ProjectOperator projFirstOut = new ProjectOperator(
new ColumnReference(_sc, 1), new ValueSpecification(_sc, "1"));
final ProjectOperator projSecondOut = new ProjectOperator(new int[] {
1, 2 });
final AggregationStore secondJoinStorage = new AggregationStore(
new AggregateCountOperator(conf).setGroupByColumns(Arrays
.asList(0)), _lc, conf, false);
final List<Integer> hashIndexes = Arrays.asList(0);
final EquiJoinComponent CUSTOMER_ORDERSjoin = new EquiJoinComponent(
relationCustomer, relationOrders)
.setFirstPreAggProj(projFirstOut)
.setSecondPreAggProj(projSecondOut)
.setSecondPreAggStorage(secondJoinStorage)
.setOutputPartKey(hashIndexes);
_queryBuilder.add(CUSTOMER_ORDERSjoin);
// -------------------------------------------------------------------------------------
final AggregateSumOperator agg = new AggregateSumOperator(
new ColumnReference(_dc, 1), conf).setGroupByColumns(Arrays
.asList(0));
OperatorComponent oc = new OperatorComponent(CUSTOMER_ORDERSjoin,
"COUNTAGG").add(agg);
_queryBuilder.add(oc);
// -------------------------------------------------------------------------------------
}
@Override
public QueryBuilder getQueryPlan() {
return _queryBuilder;
}
}