Class: Neo4j::Core::RelationshipSet

Inherits:
Object
  • Object
show all
Defined in:
lib/neo4j-core/relationship_set.rb

Overview

Represents a set of relationships.

See Neo4j::EventHandler

Instance Method Summary collapse

Constructor Details

#initialize(size = 0) ⇒ RelationshipSet

Returns a new instance of RelationshipSet.



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# File 'lib/neo4j-core/relationship_set.rb', line 6

def initialize(size=0)
  @relationship_type_set = java.util.HashSet.new(size)
  @relationship_set = java.util.HashSet.new(size)
  @relationship_map = java.util.HashMap.new(size)
end

Instance Method Details

#add(rel) ⇒ Object

Adds a relationship to the set



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# File 'lib/neo4j-core/relationship_set.rb', line 13

def add(rel)
  @relationship_type_set.add(RelationshipSetEntry.new(rel.getEndNode().getId(), rel.rel_type))
  relationships(rel.getEndNode().getId()) << rel
  @relationship_set.add(rel.getId)
end

#contains?(end_node_id, relationship_type) ⇒ Boolean

Returns true if a relationship with the specified end_node_id and relationship_type is present in the set.

Returns:

  • (Boolean) 


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# File 'lib/neo4j-core/relationship_set.rb', line 30

def contains?(end_node_id, relationship_type)
  @relationship_type_set.contains(RelationshipSetEntry.new(end_node_id, relationship_type))
end

#contains_rel?(rel) ⇒ Boolean

Returns true if the specified relationship is in the set

Returns:

  • (Boolean) 


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# File 'lib/neo4j-core/relationship_set.rb', line 25

def contains_rel?(rel)
  @relationship_set.contains(rel.getId)
end

#relationships(end_node_id) ⇒ Object

Returns a collection of relationships where the node with the specified end node id is the end node.



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# File 'lib/neo4j-core/relationship_set.rb', line 20

def relationships(end_node_id)
  @relationship_map.get(end_node_id) || add_list(end_node_id)
end