org.apache.flink.table.functions

Class FunctionService

java.lang.Object

org.apache.flink.table.functions.FunctionService

public class FunctionService
extends Object

Service for creating configured instances of UserDefinedFunction using a FunctionDescriptor.

Constructor Summary

Constructors

Constructor and Description
FunctionService()

Method Summary

Modifier and Type	Method and Description
static UserDefinedFunction	createFunction(FunctionDescriptor descriptor) Creates a user-defined function with the given properties and the current thread's context class loader.
static UserDefinedFunction	createFunction(FunctionDescriptor descriptor, ClassLoader classLoader) Creates a user-defined function with the given properties.
static UserDefinedFunction	createFunction(FunctionDescriptor descriptor, ClassLoader classLoader, boolean performValidation) Creates a user-defined function with the given properties.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FunctionService

public FunctionService()

Method Detail

createFunction

public static UserDefinedFunction createFunction(FunctionDescriptor descriptor)

Creates a user-defined function with the given properties and the current thread's context class loader.

Parameters:

descriptor - the descriptor that describes a function

Returns:

the generated user-defined function

createFunction

public static UserDefinedFunction createFunction(FunctionDescriptor descriptor,
                                                 ClassLoader classLoader)

Creates a user-defined function with the given properties.

Parameters:

descriptor - the descriptor that describes a function

classLoader - the class loader to load the function and its parameter's classes

Returns:

the generated user-defined function

createFunction

public static UserDefinedFunction createFunction(FunctionDescriptor descriptor,
                                                 ClassLoader classLoader,
                                                 boolean performValidation)

Creates a user-defined function with the given properties.

Parameters:

descriptor - the descriptor that describes a function

classLoader - the class loader to load the function and its parameter's classes

performValidation - whether or not the descriptor should be validated

Returns:

the generated user-defined function