KurtYoung commented on a change in pull request #9089:
[FLINK-13225][table-planner-blink] Introduce type inference for hive functions
in blink
URL: https://github.com/apache/flink/pull/9089#discussion_r311338752
##########
File path:
flink-table/flink-table-planner-blink/src/main/java/org/apache/flink/table/planner/catalog/FunctionCatalogOperatorTable.java
##########
@@ -90,13 +100,45 @@ private boolean isNotUserFunction(SqlFunctionCategory
category) {
String name,
FunctionDefinition functionDefinition) {
if (functionDefinition instanceof AggregateFunctionDefinition) {
- return convertAggregateFunction(name,
(AggregateFunctionDefinition) functionDefinition);
+ AggregateFunctionDefinition def =
(AggregateFunctionDefinition) functionDefinition;
+ if (isHiveFunc(def.getAggregateFunction())) {
+ return Optional.of(new HiveAggSqlFunction(
+ name,
+ name,
+ def.getAggregateFunction(),
+ typeFactory));
+ } else {
+ return convertAggregateFunction(name,
(AggregateFunctionDefinition) functionDefinition);
+ }
} else if (functionDefinition instanceof
ScalarFunctionDefinition) {
- return convertScalarFunction(name,
(ScalarFunctionDefinition) functionDefinition);
+ ScalarFunctionDefinition def =
(ScalarFunctionDefinition) functionDefinition;
+ if (isHiveFunc(def.getScalarFunction())) {
+ return Optional.of(new HiveScalarSqlFunction(
+ name,
+ name,
+ def.getScalarFunction(),
+ typeFactory));
+ } else {
+ return convertScalarFunction(name, def);
+ }
} else if (functionDefinition instanceof
TableFunctionDefinition &&
category != null &&
category.isTableFunction()) {
- return convertTableFunction(name,
(TableFunctionDefinition) functionDefinition);
+ TableFunctionDefinition def = (TableFunctionDefinition)
functionDefinition;
+ if (isHiveFunc(def.getTableFunction())) {
+ DataType returnType =
fromLegacyInfoToDataType(new GenericTypeInfo<>(Row.class));
+ // it is a hive function
Review comment:
unnecessary comment
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