Package org.neo4j.graphalgo.beta.pregel.context

Class NodeCentricContext<CONFIG extends PregelConfig>

java.lang.Object

org.neo4j.graphalgo.beta.pregel.context.PregelContext<CONFIG>

org.neo4j.graphalgo.beta.pregel.context.NodeCentricContext<CONFIG>

Direct Known Subclasses:

ComputeContext, InitContext

public abstract class NodeCentricContext<CONFIG extends PregelConfig>
extends PregelContext<CONFIG>

Field Summary

Fields

Modifier and Type	Field	Description
protected ComputeStep<CONFIG,?>	computeStep

Fields inherited from class org.neo4j.graphalgo.beta.pregel.context.PregelContext

config

Method Summary

Modifier and Type	Method	Description
int	degree()	Returns the degree (number of relationships) of the currently processed node.
java.util.stream.LongStream	getNeighbours()	Returns the outgoing neighbour-ids of the currently processed node.
java.util.stream.LongStream	getNeighbours(long nodeId)
boolean	isMultiGraph()	Indicates whether the input graph is a multi-graph.
long	nodeCount()	Number of nodes in the input graph.
long	nodeId()	The identifier of the node that is currently processed.
long	relationshipCount()	Number of relationships in the input graph.
void	setNodeId(long nodeId)	Used internally by the framework to set the currently processed node.
void	setNodeValue(java.lang.String key, double value)	Sets a node double value for given the node schema key.
void	setNodeValue(java.lang.String key, double[] value)	Sets a node long value for given the node schema key.
void	setNodeValue(java.lang.String key, long value)	Sets a node long value for given the node schema key.
void	setNodeValue(java.lang.String key, long[] value)	Sets a node long value for given the node schema key.

Methods inherited from class org.neo4j.graphalgo.beta.pregel.context.PregelContext

config

Methods inherited from class java.lang.Object

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

Field Detail

computeStep

protected final ComputeStep<CONFIG extends PregelConfig,?> computeStep

Method Detail

isMultiGraph

public boolean isMultiGraph()

Description copied from class: PregelContext

Indicates whether the input graph is a multi-graph.

Specified by:

isMultiGraph in class PregelContext<CONFIG extends PregelConfig>

nodeCount

public long nodeCount()

Description copied from class: PregelContext

Number of nodes in the input graph.

Specified by:

nodeCount in class PregelContext<CONFIG extends PregelConfig>

relationshipCount

public long relationshipCount()

Description copied from class: PregelContext

Number of relationships in the input graph.

Specified by:

relationshipCount in class PregelContext<CONFIG extends PregelConfig>

setNodeId

public void setNodeId(long nodeId)

Used internally by the framework to set the currently processed node.

nodeId

public long nodeId()

The identifier of the node that is currently processed.

setNodeValue

public void setNodeValue(java.lang.String key,
                         double value)

Sets a node double value for given the node schema key.

Parameters:

key - node schema key

value - property value

setNodeValue

public void setNodeValue(java.lang.String key,
                         long value)

Sets a node long value for given the node schema key.

Parameters:

key - node schema key

value - property value

setNodeValue

public void setNodeValue(java.lang.String key,
                         long[] value)

Sets a node long value for given the node schema key.

Parameters:

key - node schema key

value - property value

setNodeValue

public void setNodeValue(java.lang.String key,
                         double[] value)

Sets a node long value for given the node schema key.

Parameters:

key - node schema key

value - property value

degree

public int degree()

Returns the degree (number of relationships) of the currently processed node.

getNeighbours

public java.util.stream.LongStream getNeighbours()

Returns the outgoing neighbour-ids of the currently processed node.

getNeighbours

public java.util.stream.LongStream getNeighbours(long nodeId)