Class: ActiveNode::Graph

Inherits:
Object
  • Object
show all
Includes:
FinderMethods, QueryMethods, Neography::Rest::Helpers
Defined in:
lib/active_node/graph.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from FinderMethods

#find, #find_by, #find_by!, #first, #first!, #last, #last!, #raise_record_not_found_exception!, #take, #take!

Methods included from QueryMethods

#limit_value, #offset, #offset_value, #order, #order_values, #reverse_order

Constructor Details

#initialize(klass, *includes) ⇒ Graph

Returns a new instance of Graph.



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# File 'lib/active_node/graph.rb', line 11

def initialize klass, *includes
  @klass = klass if klass < ActiveNode::Base
  @matches = []
  @reflections =[]
  @object_cache = {}
  @relationship_cache = {}
  @loaded_assoc_cache = {}
  @where = {}
  @includes = includes
  @offsets = {}
end

Instance Attribute Details

#klass ⇒ Object (readonly)

Returns the value of attribute klass.



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# File 'lib/active_node/graph.rb', line 6

def klass
  @klass
end

#loaded ⇒ Object (readonly) Also known as: loaded?

Returns the value of attribute loaded.



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# File 'lib/active_node/graph.rb', line 6

def loaded
  @loaded
end

#matches ⇒ Object (readonly)

Returns the value of attribute matches.



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# File 'lib/active_node/graph.rb', line 6

def matches
  @matches
end

#reflections ⇒ Object (readonly)

Returns the value of attribute reflections.



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# File 'lib/active_node/graph.rb', line 6

def reflections
  @reflections
end

Instance Method Details

#==(other) ⇒ Object

Compares two relations for equality.



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# File 'lib/active_node/graph.rb', line 61

def ==(other)
  case other
    when Graph
      other.to_cypher == to_cypher
    when Array
      to_a == other
  end
end

#all ⇒ Object 



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# File 'lib/active_node/graph.rb', line 23

def all
  self
end

#build(*objects) ⇒ Object 



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# File 'lib/active_node/graph.rb', line 46

def build *objects
  find objects.map { |o| o.is_a?(ActiveNode::Base) ? o.id.tap { |id| @object_cache[id]=o } : extract_id(o) }
end

#count ⇒ Object 



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# File 'lib/active_node/graph.rb', line 27

def count
  to_a.count
end

#delete_all ⇒ Object

def first limit 1 to_a.first end



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# File 'lib/active_node/graph.rb', line 79

def delete_all
  Neo.db.execute_query("#{initial_match} OPTIONAL MATCH (n0)-[r]-() DELETE n0,r")
end

#includes(*includes) ⇒ Object 



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# File 'lib/active_node/graph.rb', line 31

def includes *includes
  @includes += includes
  self
end

#limit(count) ⇒ Object 



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# File 'lib/active_node/graph.rb', line 41

def limit count
  @limit = count
  self
end

#load ⇒ Object 



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# File 'lib/active_node/graph.rb', line 50

def load
  parse_results execute unless loaded?
  self
end

#pretty_print(q) ⇒ Object 



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# File 'lib/active_node/graph.rb', line 70

def pretty_print(q)
  q.pp(self.to_a)
end

#to_a ⇒ Object 



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# File 'lib/active_node/graph.rb', line 55

def to_a
  load
  @records
end

#where(hash) ⇒ Object 



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# File 'lib/active_node/graph.rb', line 36

def where hash
  @where.merge! hash if hash
  self
end