Uses of Class
org.apache.flink.table.functions.UserDefinedFunction

Packages that use UserDefinedFunction

Package	Description
org.apache.flink.table.functions
org.apache.flink.table.functions.python

Uses of UserDefinedFunction in org.apache.flink.table.functions

Subclasses of UserDefinedFunction in org.apache.flink.table.functions

Modifier and Type	Class	Description
class	AggregateFunction<T,ACC>	Base class for a user-defined aggregate function.
class	AsyncLookupFunction	A wrapper class of AsyncTableFunction for asynchronously lookup rows matching the lookup keys from external system.
class	AsyncPredictFunction	A wrapper class of AsyncTableFunction for asynchronous model inference.
class	AsyncScalarFunction	Base class for a user-defined scalar function which returns results asynchronously.
class	AsyncTableFunction<T>	Base class for a user-defined asynchronous table function.
class	ImperativeAggregateFunction<T,ACC>	Base class for user-defined AggregateFunction and TableAggregateFunction.
class	LookupFunction	A wrapper class of TableFunction for synchronously lookup rows matching the lookup keys from external system.
class	PredictFunction	A wrapper class of TableFunction for synchronous model inference.
class	ProcessTableFunction<T>	Base class for a user-defined process table function (PTF).
class	ScalarFunction	Base class for a user-defined scalar function.
class	TableAggregateFunction<T,ACC>	Base class for a user-defined table aggregate function.
class	TableFunction<T>	Base class for a user-defined table function.
class	TemporalTableFunction	Class representing temporal table function over some history table.

Methods in org.apache.flink.table.functions that return UserDefinedFunction

Modifier and Type	Method	Description
static UserDefinedFunction	UserDefinedFunctionHelper.createSpecializedFunction(String functionName, FunctionDefinition definition, CallContext callContext, ClassLoader builtInClassLoader, org.apache.flink.configuration.ReadableConfig configuration, SpecializedFunction.ExpressionEvaluatorFactory evaluatorFactory)	Creates the runtime implementation of a FunctionDefinition as an instance of UserDefinedFunction.
static UserDefinedFunction	UserDefinedFunctionHelper.instantiateFunction(Class<?> functionClass)	Instantiates a UserDefinedFunction assuming a JVM function with default constructor.
static UserDefinedFunction	UserDefinedFunctionHelper.instantiateFunction(ClassLoader classLoader, org.apache.flink.configuration.ReadableConfig config, String name, CatalogFunction catalogFunction)	Instantiates a UserDefinedFunction from a CatalogFunction.
UserDefinedFunction	BuiltInFunctionDefinition.specialize(SpecializedFunction.SpecializedContext context)
UserDefinedFunction	SpecializedFunction.specialize(SpecializedFunction.SpecializedContext context)	Provides a runtime implementation that is specialized for the given call and session.

Methods in org.apache.flink.table.functions with parameters of type UserDefinedFunction

Modifier and Type	Method	Description
static String	UserDefinedFunctionHelper.generateInlineFunctionName(UserDefinedFunction function)	Name for anonymous, inline functions.
static boolean	UserDefinedFunctionHelper.isClassNameSerializable(UserDefinedFunction function)	Returns whether a UserDefinedFunction can be easily serialized and identified by only a fully qualified class name.
static void	UserDefinedFunctionHelper.prepareInstance(org.apache.flink.configuration.ReadableConfig config, UserDefinedFunction function)	Prepares a UserDefinedFunction instance for usage in the API.

Method parameters in org.apache.flink.table.functions with type arguments of type UserDefinedFunction

Modifier and Type	Method	Description
static void	UserDefinedFunctionHelper.validateClass(Class<? extends UserDefinedFunction> functionClass)	Validates a UserDefinedFunction class for usage in the API.
static void	UserDefinedFunctionHelper.validateClassForRuntime(Class<? extends UserDefinedFunction> functionClass, String methodName, Class<?>[] argumentClasses, Class<?> outputClass, String functionName)	Validates a UserDefinedFunction class for usage in the runtime.

Uses of UserDefinedFunction in org.apache.flink.table.functions.python

Subclasses of UserDefinedFunction in org.apache.flink.table.functions.python

Modifier and Type	Class	Description
class	PythonAggregateFunction	The wrapper of user defined python aggregate function.
class	PythonScalarFunction	The wrapper of user defined python scalar function.
class	PythonTableAggregateFunction	The wrapper of user defined python table aggregate function.
class	PythonTableFunction	The wrapper of user defined python table function.