com.graphaware.runtime.walk

Class RandomNodeSelector

java.lang.Object

com.graphaware.runtime.walk.RandomNodeSelector

All Implemented Interfaces:

NodeSelector

public class RandomNodeSelector
extends Object
implements NodeSelector

NodeSelector that selects a Node at random from all Nodes available in the database that match the provided NodeInclusionPolicy.

Constructor Summary

Constructors

Constructor and Description
RandomNodeSelector() Constructs a new RandomNodeSelector that selects any node which isn't a framework-internal node.
RandomNodeSelector(NodeInclusionPolicy inclusionPolicy) Constructs a new RandomNodeSelector that selects a random node that matches the given NodeInclusionPolicy.

Method Summary

Modifier and Type	Method and Description
org.neo4j.graphdb.Node	selectNode(org.neo4j.graphdb.GraphDatabaseService database) Select a node from the graph.

Methods inherited from class java.lang.Object

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

Constructor Detail

RandomNodeSelector

public RandomNodeSelector()

Constructs a new RandomNodeSelector that selects any node which isn't a framework-internal node.

RandomNodeSelector

public RandomNodeSelector(NodeInclusionPolicy inclusionPolicy)

Constructs a new RandomNodeSelector that selects a random node that matches the given NodeInclusionPolicy.

Parameters:

inclusionPolicy - The NodeInclusionPolicy to consider when selecting nodes.

Method Detail

selectNode

public org.neo4j.graphdb.Node selectNode(org.neo4j.graphdb.GraphDatabaseService database)

Select a node from the graph.

Specified by:

selectNode in interface NodeSelector

Parameters:

database - in which to select a node.

Returns:

A Node in the given database, null if a node can't be selected for whatever reason, perhaps because there is no (matching) node in the database.