bowenli86 commented on a change in pull request #9908:
[FLINK-14401][table][hive] create FunctionDefinitionUtil to instantiate regular
java class-based udf and add HiveFunctionDefinitionFactory to instantiate both
flink and hive udf
URL: https://github.com/apache/flink/pull/9908#discussion_r336260981
##########
File path:
flink-table/flink-table-api-java/src/main/java/org/apache/flink/table/catalog/FunctionCatalog.java
##########
@@ -242,21 +242,17 @@ public void
registerTempCatalogScalarFunction(ObjectIdentifier oi, ScalarFunctio
CatalogFunction catalogFunction = catalog.getFunction(
new
ObjectPath(catalogManager.getCurrentDatabase(), functionName));
- if (catalog.getTableFactory().isPresent() &&
- catalog.getTableFactory().get() instanceof
FunctionDefinitionFactory) {
-
- FunctionDefinitionFactory factory =
(FunctionDefinitionFactory) catalog.getTableFactory().get();
-
- userCandidate =
factory.createFunctionDefinition(functionName, catalogFunction);
-
- return Optional.of(
- new FunctionLookup.Result(
-
ObjectIdentifier.of(catalogManager.getCurrentCatalog(),
catalogManager.getCurrentDatabase(), name),
- userCandidate)
- );
+ if (catalog.getFunctionDefinitionFactory().isPresent())
{
+ userCandidate =
catalog.getFunctionDefinitionFactory().get().createFunctionDefinition(functionName,
catalogFunction);
} else {
- // TODO: should go through function definition
discover service
+ userCandidate =
FunctionDefinitionUtil.createFunctionDefinition(functionName, catalogFunction);
Review comment:
This has nothing to do with GenericInMemoryCatalog, thus I'm not so sure
what you mean. Maybe you can elaborate more?
As we discussed this morning, catalog can provide its own function
definition factory; if not, the function definition instantiation will go thru
the default logic. Just like how table instantiation logic works
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