Package org.neo4j.graphalgo.beta.pregel

Class PregelContext<CONFIG extends PregelConfig>

java.lang.Object

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

Direct Known Subclasses:

PregelContext.ComputeContext, PregelContext.InitContext

public abstract class PregelContext<CONFIG extends PregelConfig>
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	PregelContext.ComputeContext<CONFIG extends PregelConfig>	A context that is used during the computation.
static class	PregelContext.InitContext<CONFIG extends PregelConfig>	A context that is used during the initialization phase, which is before the first superstep is being executed.

Method Summary

Modifier and Type	Method	Description
CONFIG	config()	Allows access to the user-defined Pregel configuration.
int	degree()	Returns the degree (number of relationships) of the currently processed node.
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	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 java.lang.Object

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

Method Detail

nodeId

public long nodeId()

The identifier of the node that is currently processed.

config

public CONFIG config()

Allows access to the user-defined Pregel configuration.

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

nodeCount

public long nodeCount()

Number of nodes in the input graph.

relationshipCount

public long relationshipCount()

Number of relationships in the input graph.

degree

public int degree()

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