org.apache.flink.streaming.util.functions

Class StreamingFunctionUtils

java.lang.Object

org.apache.flink.streaming.util.functions.StreamingFunctionUtils

@Internal
public final class StreamingFunctionUtils
extends Object

Utility class that contains helper methods to work with Flink Streaming Functions. This is similar to FunctionUtils but has additional methods for invoking interfaces that only exist in the streaming API.

Method Summary

Modifier and Type	Method and Description
static void	restoreFunctionState(StateInitializationContext context, Function userFunction)
static <T> void	setOutputType(Function userFunction, TypeInformation<T> outTypeInfo, ExecutionConfig executionConfig)
static void	snapshotFunctionState(StateSnapshotContext context, OperatorStateBackend backend, Function userFunction)

Methods inherited from class java.lang.Object

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

Method Detail

setOutputType

public static <T> void setOutputType(Function userFunction,
                                     TypeInformation<T> outTypeInfo,
                                     ExecutionConfig executionConfig)

snapshotFunctionState

public static void snapshotFunctionState(StateSnapshotContext context,
                                         OperatorStateBackend backend,
                                         Function userFunction)
                                  throws Exception

Throws:

Exception

restoreFunctionState

public static void restoreFunctionState(StateInitializationContext context,
                                        Function userFunction)
                                 throws Exception

Throws:

Exception