org.apache.flink.graph.utils

Class Tuple2ToEdgeMap<K>

java.lang.Object

org.apache.flink.graph.utils.Tuple2ToEdgeMap<K>

Type Parameters:

K - edge ID type

All Implemented Interfaces:

Serializable, Function, MapFunction<Tuple2<K,K>,Edge<K,NullValue>>

public class Tuple2ToEdgeMap<K>
extends Object
implements MapFunction<Tuple2<K,K>,Edge<K,NullValue>>

Create an Edge from a Tuple2.

The new edge's value is set to NullValue.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Tuple2ToEdgeMap()

Method Summary

Modifier and Type	Method and Description
Edge<K,NullValue>	map(Tuple2<K,K> tuple) The mapping method.

Methods inherited from class java.lang.Object

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

Constructor Detail

Tuple2ToEdgeMap

public Tuple2ToEdgeMap()

Method Detail

map

public Edge<K,NullValue> map(Tuple2<K,K> tuple)

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<Tuple2<K,K>,Edge<K,NullValue>>

Parameters:

tuple - The input value.

Returns:

The transformed value