org.apache.beam.sdk.transforms.reflect

Class DoFnInvokers

java.lang.Object

org.apache.beam.sdk.transforms.reflect.DoFnInvokers

@Internal
public class DoFnInvokers
extends java.lang.Object

Static utilities for working with DoFnInvoker.

Method Summary

Modifier and Type	Method and Description
static <InputT,OutputT> DoFnInvoker<InputT,OutputT>	invokerFor(DoFn<InputT,OutputT> fn) Returns an DoFnInvoker for the given DoFn, using a default choice of DoFnInvokerFactory.
static <InputT,OutputT> DoFnInvoker<InputT,OutputT>	tryInvokeSetupFor(DoFn<InputT,OutputT> fn) Tries to invoke setup on the given DoFn.

Methods inherited from class java.lang.Object

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

Method Detail

invokerFor

public static <InputT,OutputT> DoFnInvoker<InputT,OutputT> invokerFor(DoFn<InputT,OutputT> fn)

Returns an DoFnInvoker for the given DoFn, using a default choice of DoFnInvokerFactory.

The default is permitted to change at any time. Users of this method may not depend on any details DoFnInvokerFactory-specific details of the invoker. Today it is ByteBuddyDoFnInvokerFactory.

tryInvokeSetupFor

public static <InputT,OutputT> DoFnInvoker<InputT,OutputT> tryInvokeSetupFor(DoFn<InputT,OutputT> fn)

Tries to invoke setup on the given DoFn. If setup throws any exception, the given DoFn will be torn down immediately and the exception rethrown.

On success returns an DoFnInvoker for the given DoFn.