final DataSourceComponent relationOrders = new DataSourceComponent("ORDERS", dataPath
+ "orders" + extension, _queryPlan).setHashIndexes(hashOrders)
.addOperator(selectionOrders).addOperator(projectionOrders);
// -------------------------------------------------------------------------------------
final EquiJoinComponent C_Ojoin = new EquiJoinComponent(relationCustomer, relationOrders,
_queryPlan).setHashIndexes(Arrays.asList(3));
// -------------------------------------------------------------------------------------
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, _queryPlan).setHashIndexes(hashNation).addOperator(
projectionNation);
// -------------------------------------------------------------------------------------
final EquiJoinComponent C_O_Njoin = new EquiJoinComponent(C_Ojoin, relationNation,
_queryPlan).addOperator(new ProjectOperator(new int[] { 0, 1, 2, 4, 5, 6, 7, 8 }))
.setHashIndexes(Arrays.asList(6));
// -------------------------------------------------------------------------------------
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, _queryPlan).setHashIndexes(hashLineitem)
.addOperator(selectionLineitem).addOperator(projectionLineitem);
// -------------------------------------------------------------------------------------
// 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));
new EquiJoinComponent(C_O_Njoin, relationLineitem, _queryPlan).addOperator(
new ProjectOperator(new int[] { 0, 1, 2, 3, 4, 5, 7, 8, 9 })).addOperator(agg);
}