Module: Neomirror::Node

Defined in:
lib/neomirror/node.rb

Defined Under Namespace

Modules: ClassMethods

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



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# File 'lib/neomirror/node.rb', line 2

def self.included(base)
  base.extend(ClassMethods)
  base.after_create :create_neo_node if base.respond_to?(:after_create)
  base.after_update :update_neo_node if base.respond_to?(:after_update)
  base.after_destroy :destroy_neo_node if base.respond_to?(:after_destroy)
end

Instance Method Details

#create_neo_node ⇒ Object 



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# File 'lib/neomirror/node.rb', line 54

def create_neo_node
  return true unless self.class.neo_mirror
  @neo_node = ::Neography::Node.create(neo_node_properties, ::Neomirror.neo) 
  ::Neomirror.neo.set_label(@neo_node, self.class.neo_mirror[:label])
  @neo_node
end

#destroy_neo_node ⇒ Object 



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# File 'lib/neomirror/node.rb', line 71

def destroy_neo_node
  return true unless self.class.neo_mirror && find_neo_node
  ::Neomirror.neo.delete_node!(@neo_node)
  true
end

#find_neo_node ⇒ Object 



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# File 'lib/neomirror/node.rb', line 46

def find_neo_node
  raise "Couldn't find neo_node declaration" unless self.class.neo_mirror
  label = self.class.neo_mirror[:label]
  id = self.__send__(self.class.neo_primary_key)
  return nil unless node = ::Neomirror.neo.find_nodes_labeled(label, { :id => id }).first
  @neo_node = ::Neography::Node.load(node, ::Neomirror.neo)
end

#neo_node ⇒ Object Also known as: node 



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# File 'lib/neomirror/node.rb', line 32

def neo_node
  raise "Couldn't find neo_node declaration" unless self.class.neo_mirror
  find_neo_node || create_neo_node
end

#neo_node_properties ⇒ Object 



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# File 'lib/neomirror/node.rb', line 38

def neo_node_properties
  hash = { :id => self.__send__(self.class.neo_primary_key) }
  if self.class.neo_mirror && self.class.neo_mirror[:properties]
    self.class.neo_mirror[:properties].each { |property, rule| hash[property] = rule.call(self) }
  end
  hash
end

#update_neo_node ⇒ Object 



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# File 'lib/neomirror/node.rb', line 61

def update_neo_node
  return true unless self.class.neo_mirror
  if find_neo_node
    ::Neomirror.neo.reset_node_properties(@neo_node, neo_node_properties) if self.class.neo_mirror[:properties]
    true
  else
    create_neo_node
  end
end