org.apache.flink.graph.asm.degree.annotate

Class DegreeAnnotationFunctions.MapEdgeToTargetId<K,EV>

java.lang.Object

org.apache.flink.graph.asm.degree.annotate.DegreeAnnotationFunctions.MapEdgeToTargetId<K,EV>

Type Parameters:

K - ID type

EV - edge value type

All Implemented Interfaces:

Serializable, Function, MapFunction<Edge<K,EV>,Vertex<K,LongValue>>

Enclosing class:

DegreeAnnotationFunctions

public static class DegreeAnnotationFunctions.MapEdgeToTargetId<K,EV>
extends Object
implements MapFunction<Edge<K,EV>,Vertex<K,LongValue>>

Emits the target vertex ID along with an initial count.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
MapEdgeToTargetId()

Method Summary

Modifier and Type	Method and Description
Vertex<K,LongValue>	map(Edge<K,EV> value) The mapping method.

Methods inherited from class java.lang.Object

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

Constructor Detail

MapEdgeToTargetId

public MapEdgeToTargetId()

Method Detail

map

public Vertex<K,LongValue> map(Edge<K,EV> value)
                        throws Exception

Description copied from interface: MapFunction

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

Specified by:

map in interface MapFunction<Edge<K,EV>,Vertex<K,LongValue>>

Parameters:

value - The input value.

Returns:

The transformed value

Throws:

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