org.apache.beam.sdk.util

Class MutationDetectors

java.lang.Object

org.apache.beam.sdk.util.MutationDetectors

@Internal
public class MutationDetectors
extends java.lang.Object

Static methods for creating and working with MutationDetector.

Method Summary

Modifier and Type	Method and Description
static <T> MutationDetector	forValueWithCoder(T value, Coder<T> coder) Creates a new MutationDetector for the provided value that uses the provided Coder to perform deep copies and comparisons by serializing and deserializing values.
static MutationDetector	noopMutationDetector() Creates a new MutationDetector that always succeeds.

Methods inherited from class java.lang.Object

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

Method Detail

forValueWithCoder

public static <T> MutationDetector forValueWithCoder(T value,
                                                     Coder<T> coder)
                                              throws CoderException

Creates a new MutationDetector for the provided value that uses the provided Coder to perform deep copies and comparisons by serializing and deserializing values.

It is permissible for value to be null. Since null is immutable, the mutation check will always succeed.

Throws:

CoderException

noopMutationDetector

public static MutationDetector noopMutationDetector()

Creates a new MutationDetector that always succeeds.

This is useful, for example, for providing a very efficient mutation detector for a value which is already immutable by design.