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# This is a mixin that is used to extend the java object org.neo4j.graphdb.Relationship
#
module Neo4j::JavaRelationshipMixin
# Deletes this relationship.
#
def del
Neo4j.event_handler.relationship_deleted(wrapper)
type = getType().name()
delete
if end_node.class.respond_to?(:indexer)
end_node.class.indexer.on_relationship_deleted(end_node, type)
elsif end_node.wrapper?
end_node.wrapper_class.indexer.on_relationship_deleted(end_node.wrapper, type)
end
end
# Returns the end node of this relationship
def end_node
id = getEndNode.getId
Neo4j.load_node(id)
end
# Returns the start node of this relationship
def start_node
id = getStartNode.getId
Neo4j.load_node(id)
end
# A convenience operation that, given a node that is attached to this relationship, returns the other node.
# For example if node is a start node, the end node will be returned, and vice versa.
# This is a very convenient operation when you're manually traversing the node space by invoking one of the #rels operations on node.
#
# This operation will throw a runtime exception if node is neither this relationship's start node nor its end node.
#
# ==== Example
# For example, to get the node "at the other end" of a relationship, use the following:
# Node endNode = node.rel(:some_rel_type).other_node(node)
#
def other_node(node)
neo_node = node
neo_node = node._java_node if node.respond_to?(:_java_node)
id = getOtherNode(neo_node).getId
Neo4j.load_node(id)
end
# Returns the neo relationship type that this relationship is used in.
# (see java API org.neo4j.graphdb.Relationship#getType and org.neo4j.graphdb.RelationshipType)
#
# ==== Returns
# the relationship type (of type Symbol)
#
def relationship_type
get_type.name.to_sym
end
end
Version data entries
9 entries across 9 versions & 1 rubygems