@Override
public PhysicalOperator getPhysicalOperator(PhysicalPlanCreator creator) throws IOException {
// Prel child = (Prel) this.getChild();
final List<String> childFields = getChild().getRowType().getFieldNames();
final List<String> fields = getRowType().getFieldNames();
List<NamedExpression> keys = Lists.newArrayList();
List<NamedExpression> exprs = Lists.newArrayList();
for (int group : BitSets.toIter(groupSet)) {
FieldReference fr = new FieldReference(childFields.get(group), ExpressionPosition.UNKNOWN);
keys.add(new NamedExpression(fr, fr));
}
for (Ord<AggregateCall> aggCall : Ord.zip(aggCalls)) {
FieldReference ref = new FieldReference(fields.get(groupSet.cardinality() + aggCall.i));
LogicalExpression expr = toDrill(aggCall.e, childFields, new DrillParseContext());
exprs.add(new NamedExpression(expr, ref));
}
Prel child = (Prel) this.getChild();
StreamingAggregate g =
new StreamingAggregate(
child.getPhysicalOperator(creator),
keys.toArray(new NamedExpression[keys.size()]),
exprs.toArray(new NamedExpression[exprs.size()]),
1.0f);
return g;
}
@Override
public PhysicalOperator getPhysicalOperator(PhysicalPlanCreator creator) throws IOException {
Prel child = (Prel) this.getInput();
PhysicalOperator childPOP = child.getPhysicalOperator(creator);
org.apache.drill.exec.physical.config.Sort g =
new ExternalSort(
childPOP, PrelUtil.getOrdering(this.collation, getInput().getRowType()), false);
return creator.addMetadata(this, g);
}
public PhysicalOperator getPhysicalOperator(PhysicalPlanCreator creator) throws IOException {
Prel child = (Prel) this.getChild();
PhysicalOperator childPOP = child.getPhysicalOperator(creator);
if (PrelUtil.getSettings(getCluster()).isSingleMode()) return childPOP;
HashToMergeExchange g =
new HashToMergeExchange(
childPOP,
PrelUtil.getHashExpression(this.distFields, getChild().getRowType()),
PrelUtil.getOrdering(this.collation, getChild().getRowType()));
g.setOperatorId(creator.getOperatorId(this));
return g;
}
