org.apache.flink.api.common.functions.util

Class FunctionUtils

java.lang.Object

org.apache.flink.api.common.functions.util.FunctionUtils

@Internal
public final class FunctionUtils
extends Object

Utility class that contains helper methods to work with Flink Function class.

Method Summary

Modifier and Type	Method and Description
static Method	checkAndExtractLambdaMethod(Function function)
static void	closeFunction(Function function)
static RuntimeContext	getFunctionRuntimeContext(Function function, RuntimeContext defaultContext)
static void	openFunction(Function function, Configuration parameters)
static void	setFunctionRuntimeContext(Function function, RuntimeContext context)

Methods inherited from class java.lang.Object

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

Method Detail

openFunction

public static void openFunction(Function function,
                                Configuration parameters)
                         throws Exception

Throws:

Exception

closeFunction

public static void closeFunction(Function function)
                          throws Exception

Throws:

Exception

setFunctionRuntimeContext

public static void setFunctionRuntimeContext(Function function,
                                             RuntimeContext context)

getFunctionRuntimeContext

public static RuntimeContext getFunctionRuntimeContext(Function function,
                                                       RuntimeContext defaultContext)

checkAndExtractLambdaMethod

public static Method checkAndExtractLambdaMethod(Function function)