amaliujia commented on a change in pull request #13912:
URL: https://github.com/apache/beam/pull/13912#discussion_r576547245
##########
File path:
sdks/java/extensions/sql/zetasql/src/main/java/org/apache/beam/sdk/extensions/sql/zetasql/ZetaSQLQueryPlanner.java
##########
@@ -116,8 +116,43 @@ public QueryPlanner createPlanner(
return modifyRuleSetsForZetaSql(BeamRuleSets.getRuleSets());
}
- /** Returns true if the argument contains any user-defined Java functions. */
- static boolean hasUdfInProjects(RelOptRuleCall x) {
+ /**
+ * Returns true if the arguments only contain any user-defined Java
functions, otherwise returns
+ * false.
+ */
+ static boolean hasOnlyJavaUdfInProjects(RelOptRuleCall x) {
+ List<RelNode> resList = x.getRelList();
+ for (RelNode relNode : resList) {
+ if (relNode instanceof LogicalCalc) {
+ LogicalCalc logicalCalc = (LogicalCalc) relNode;
+ for (RexNode rexNode : logicalCalc.getProgram().getExprList()) {
+ if (rexNode instanceof RexCall) {
+ RexCall call = (RexCall) rexNode;
+ if (call.getOperator() instanceof SqlUserDefinedFunction) {
+ SqlUserDefinedFunction udf = (SqlUserDefinedFunction) call.op;
+ if (udf.function instanceof ZetaSqlScalarFunctionImpl) {
+ ZetaSqlScalarFunctionImpl scalarFunction =
(ZetaSqlScalarFunctionImpl) udf.function;
+ if (!scalarFunction.functionGroup.equals(
+ SqlAnalyzer.USER_DEFINED_JAVA_SCALAR_FUNCTIONS)) {
+ return false;
+ }
+ } else {
+ return false;
+ }
+ } else {
+ return false;
+ }
+ }
+ }
+ }
+ }
+ return true;
+ }
+
+ /**
+ * Returns false if the argument contains any user-defined Java functions,
otherwise returns true.
+ */
+ static boolean hasNoJavaUdfInProjects(RelOptRuleCall x) {
Review comment:
I agreed this might be better. But I think it's bit tricky to implement
the positive version of `hasNoJavaUdfInProjects `. The `hasNoJavaUdfInProjects
` is more error prone at this moment (we only need to consider java udf).
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