com.graphaware.runtime.walk

Class RandomRelationshipSelector

java.lang.Object

com.graphaware.runtime.walk.RandomRelationshipSelector

All Implemented Interfaces:

RelationshipSelector

public class RandomRelationshipSelector
extends Object
implements RelationshipSelector

RelationshipSelector that selects a Relationship at random from all the given Node's Relationships, such that match the selected Relationship matches the provided RelationshipInclusionPolicy.

This is an O(n) algorithm.

Constructor Summary

Constructors

Constructor and Description
RandomRelationshipSelector() Constructs a new RandomRelationshipSelector that selects any relationship that isn't framework-internal and doesn't link to a framework-internal node.
RandomRelationshipSelector(RelationshipInclusionPolicy relationshipInclusionPolicy) Constructs a new RandomRelationshipSelector that chooses relationships in accordance with the given ObjectInclusionPolicy.

Method Summary

Modifier and Type	Method and Description
org.neo4j.graphdb.Relationship	selectRelationship(org.neo4j.graphdb.Node node) Select a relationship of the node.

Methods inherited from class java.lang.Object

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

Constructor Detail

RandomRelationshipSelector

public RandomRelationshipSelector()

Constructs a new RandomRelationshipSelector that selects any relationship that isn't framework-internal and doesn't link to a framework-internal node.

RandomRelationshipSelector

public RandomRelationshipSelector(RelationshipInclusionPolicy relationshipInclusionPolicy)

Constructs a new RandomRelationshipSelector that chooses relationships in accordance with the given ObjectInclusionPolicy.

Parameters:

relationshipInclusionPolicy - The ObjectInclusionPolicy used to select relationships to follow.

Method Detail

selectRelationship

public org.neo4j.graphdb.Relationship selectRelationship(org.neo4j.graphdb.Node node)

Select a relationship of the node.

Specified by:

selectRelationship in interface RelationshipSelector

Parameters:

node - for which to select a relationship.

Returns:

A Relationship of the given node, null if a relationship can't be selected for whatever reason, perhaps because the node has no (matching) relationships.