Example #1
0
 /** Analyzes a GROUPING SETS item in a GROUP BY clause. */
 private static void convertGroupSet(
     SqlValidatorScope scope,
     List<SqlNode> groupExprs,
     Map<Integer, Integer> groupExprProjection,
     ImmutableList.Builder<ImmutableBitSet> builder,
     SqlNode groupExpr) {
   switch (groupExpr.getKind()) {
     case GROUPING_SETS:
       final SqlCall call = (SqlCall) groupExpr;
       for (SqlNode node : call.getOperandList()) {
         convertGroupSet(scope, groupExprs, groupExprProjection, builder, node);
       }
       return;
     case ROW:
       final List<ImmutableBitSet> bitSets =
           analyzeGroupTuple(
               scope, groupExprs, groupExprProjection, ((SqlCall) groupExpr).getOperandList());
       builder.add(ImmutableBitSet.union(bitSets));
       return;
     default:
       builder.add(analyzeGroupExpr(scope, groupExprs, groupExprProjection, groupExpr));
       return;
   }
 }
Example #2
0
 // Override to copy all arguments regardless of whether visitor changes
 // them.
 protected SqlNode visitScoped(SqlCall call) {
   ArgHandler<SqlNode> argHandler = new CallCopyingArgHandler(call, true);
   call.getOperator().acceptCall(this, call, false, argHandler);
   return argHandler.result();
 }