@Override
public Void visitDistinctOperator(DistinctOperator op, Void arg) throws AlgebricksException {
List<LogicalVariable> allLiveVars = new ArrayList<LogicalVariable>();
for (Mutable<ILogicalOperator> c : op.getInputs()) {
VariableUtilities.getLiveVariables(c.getValue(), allLiveVars);
}
VariableUtilities.getProducedVariables(op, allLiveVars);
/** put distinct vars first */
schemaVariables.addAll(op.getDistinctByVarList());
/** then other live vars */
for (LogicalVariable var : allLiveVars) {
if (!schemaVariables.contains(var)) {
schemaVariables.add(var);
}
}
return null;
}
@Override
public Void visitDistinctOperator(
DistinctOperator op, Pair<LogicalVariable, LogicalVariable> pair) throws AlgebricksException {
for (Mutable<ILogicalExpression> eRef : op.getExpressions()) {
eRef.getValue().substituteVar(pair.first, pair.second);
}
substVarTypes(op, pair);
return null;
}