org.apache.flink.graph.asm.translate.translators

Class ToNullValue<T>

java.lang.Object

org.apache.flink.graph.asm.translate.translators.ToNullValue<T>

Type Parameters:

T - the type of the source value

All Implemented Interfaces:

Serializable, Function, TranslateFunction<T,NullValue>

public class ToNullValue<T>
extends Object
implements TranslateFunction<T,NullValue>

Replace any type with NullValue.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
ToNullValue()

Method Summary

Modifier and Type	Method and Description
NullValue	translate(T value, NullValue reuse) The translating method.

Methods inherited from class java.lang.Object

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

Constructor Detail

ToNullValue

public ToNullValue()

Method Detail

translate

public NullValue translate(T value,
                           NullValue reuse)
                    throws Exception

Description copied from interface: TranslateFunction

The translating method. Takes an element from the input data set and transforms it into exactly one element.

Specified by:

translate in interface TranslateFunction<T,NullValue>

Parameters:

value - input value.

reuse - value which may be reused for output; if reuse is null then a new output object must be instantiated and returned

Returns:

the transformed value

Throws:

Exception - This method may throw exceptions. Throwing an exception will cause the operation to fail and may trigger recovery.