org.apache.giraph.utils

Class ComputationCountEdges

java.lang.Object

org.apache.giraph.conf.DefaultImmutableClassesGiraphConfigurable<I,V,E>

org.apache.giraph.worker.WorkerAggregatorDelegator<I,V,E>

org.apache.giraph.graph.AbstractComputation<I,V,E,M,M>

org.apache.giraph.graph.BasicComputation<org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable>

org.apache.giraph.utils.ComputationCountEdges

All Implemented Interfaces:

AggregatorUsage, GiraphConfigurationSettable<org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.NullWritable>, ImmutableClassesGiraphConfigurable<org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.NullWritable>, TypesHolder<org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable>, Computation<org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable>, WorkerAggregatorUsage, WorkerBroadcastUsage, WorkerGlobalCommUsage, WorkerIndexUsage<org.apache.hadoop.io.IntWritable>, WorkerReduceUsage

Direct Known Subclasses:

TestVertexEdgeInput.TestComputationCheckEdgesType

public class ComputationCountEdges
extends BasicComputation<org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable>

Computation which sets the value of vertex to its number of edges, used for testing. Vertex ids, values, edge values and messages are all integers.

Constructor Summary

Constructors

Constructor and Description
ComputationCountEdges()

Method Summary

Modifier and Type	Method and Description
void	compute(Vertex<org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.NullWritable> vertex, Iterable<org.apache.hadoop.io.NullWritable> messages)

Methods inherited from class org.apache.giraph.graph.AbstractComputation

addEdgeRequest, addVertexRequest, addVertexRequest, getContext, getMyWorkerIndex, getSuperstep, getTotalNumEdges, getTotalNumVertices, getWorkerContext, getWorkerCount, getWorkerForVertex, initialize, postSuperstep, preSuperstep, removeEdgesRequest, removeVertexRequest, sendMessage, sendMessageToAllEdges, sendMessageToMultipleEdges

Methods inherited from class org.apache.giraph.worker.WorkerAggregatorDelegator

aggregate, getAggregatedValue, getBroadcast, reduce, reduceMerge, setWorkerGlobalCommUsage

Methods inherited from class org.apache.giraph.conf.DefaultImmutableClassesGiraphConfigurable

getConf, setConf

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.giraph.conf.ImmutableClassesGiraphConfigurable

getConf

Methods inherited from interface org.apache.giraph.conf.GiraphConfigurationSettable

setConf

Methods inherited from interface org.apache.giraph.worker.WorkerBroadcastUsage

getBroadcast

Methods inherited from interface org.apache.giraph.worker.WorkerReduceUsage

reduce, reduceMerge

Methods inherited from interface org.apache.giraph.worker.WorkerAggregatorUsage

aggregate

Methods inherited from interface org.apache.giraph.aggregators.AggregatorUsage

getAggregatedValue

Constructor Detail

ComputationCountEdges

public ComputationCountEdges()

Method Detail

compute

public void compute(Vertex<org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.NullWritable> vertex,
                    Iterable<org.apache.hadoop.io.NullWritable> messages)
             throws IOException

Specified by:

compute in interface Computation<org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable>

Specified by:

compute in class AbstractComputation<org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable>

Throws:

IOException