Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/3623#discussion_r109933183
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/functions/utils/UserDefinedFunctionUtils.scala
---
@@ -209,22 +216,23 @@ object UserDefinedFunctionUtils {
*
* @param name function name
* @param tableFunction table function
- * @param resultType the type information of returned table
+ * @param implicitResultType the implicit type information of returned
table
* @param typeFactory type factory
* @return the TableSqlFunction
*/
def createTableSqlFunctions(
name: String,
tableFunction: TableFunction[_],
- resultType: TypeInformation[_],
+ implicitResultType: TypeInformation[_],
typeFactory: FlinkTypeFactory)
: Seq[SqlFunction] = {
- val (fieldNames, fieldIndexes, _) =
UserDefinedFunctionUtils.getFieldInfo(resultType)
val evalMethods = checkAndExtractEvalMethods(tableFunction)
evalMethods.map { method =>
- val function = new FlinkTableFunctionImpl(resultType, fieldIndexes,
fieldNames, method)
- TableSqlFunction(name, tableFunction, resultType, typeFactory,
function)
+ // we don't know the exact result type yet.
+ val function = new DeferredTypeFlinkTableFunction(
+ tableFunction, method, implicitResultType)
--- End diff --
parameters fit in line above
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