module ActiveGraph::Node::Labels::ClassMethods

Public Instance Methods

base_class() click to toggle source
    # File lib/active_graph/node/labels.rb
137 def base_class
138   unless self < ActiveGraph::Node
139     fail "#{name} doesn't belong in a hierarchy descending from Node"
140   end
141 
142   if superclass == Object
143     self
144   else
145     superclass.base_class
146   end
147 end
delete_all() click to toggle source

Deletes all nodes and connected relationships from Cypher.

    # File lib/active_graph/node/labels.rb
112 def delete_all
113   neo4j_query("MATCH (n:`#{mapped_label_name}`) OPTIONAL MATCH (n)-[r]-() DELETE n,r")
114 end
destroy_all() click to toggle source

Returns each node to Ruby and calls `destroy`. Be careful, as this can be a very slow operation if you have many nodes. It will generate at least one database query per node in the database, more if callbacks require them.

    # File lib/active_graph/node/labels.rb
118 def destroy_all
119   all.each(&:destroy)
120 end
find(id) click to toggle source

Returns the object with the specified neo4j id. @param [String,Integer] id of node to find

   # File lib/active_graph/node/labels.rb
89 def find(id)
90   map_id = proc { |object| object.respond_to?(:id) ? object.send(:id) : object }
91 
92   result = find_by_id_or_ids(map_id, id)
93 
94   fail RecordNotFound.new(
95     "Couldn't find #{name} with '#{id_property_name}'=#{id.inspect}",
96     name, id_property_name, id) if result.blank?
97   result.tap { |r| find_callbacks!(r) }
98 end
find_by(values) click to toggle source

Finds the first record matching the specified conditions. There is no implied ordering so if order matters, you should specify it yourself. @param values Hash args of arguments to find

    # File lib/active_graph/node/labels.rb
102 def find_by(values)
103   all.where(values).limit(1).query_as(:n).pluck(:n).first
104 end
find_by!(values) click to toggle source

Like find_by, except that if no record is found, raises a RecordNotFound error.

    # File lib/active_graph/node/labels.rb
107 def find_by!(values)
108   find_by(values) || fail(RecordNotFound.new("#{self.query_as(:n).where(n: values).limit(1).to_cypher} returned no results", name))
109 end
mapped_label() click to toggle source

@return [ActiveGraph::Label] the label for this class

    # File lib/active_graph/node/labels.rb
133 def mapped_label
134   ActiveGraph::Core::Label.new(mapped_label_name)
135 end
mapped_label_name() click to toggle source

@return [Symbol] the label that this class has which corresponds to a Ruby class

    # File lib/active_graph/node/labels.rb
128 def mapped_label_name
129   @mapped_label_name || label_for_model
130 end
mapped_label_names() click to toggle source

@return [Array{Symbol}] all the labels that this class has

    # File lib/active_graph/node/labels.rb
123 def mapped_label_names
124   self.ancestors.find_all { |a| a.respond_to?(:mapped_label_name) }.map { |a| a.mapped_label_name.to_sym }
125 end

Protected Instance Methods

mapped_label_name=(name) click to toggle source
    # File lib/active_graph/node/labels.rb
155 def mapped_label_name=(name)
156   @mapped_label_name = name.to_sym
157 end
mapped_labels() click to toggle source
    # File lib/active_graph/node/labels.rb
151 def mapped_labels
152   mapped_label_names.map { |label_name| ActiveGraph::Label.create(label_name) }
153 end
set_mapped_label_name(name) click to toggle source

rubocop:disable Naming/AccessorMethodName

    # File lib/active_graph/node/labels.rb
160 def set_mapped_label_name(name)
161   ActiveSupport::Deprecation.warn 'set_mapped_label_name is deprecated, use self.mapped_label_name= instead.', caller
162 
163   self.mapped_label_name = name
164 end

Private Instance Methods

decorated_label_name() click to toggle source
    # File lib/active_graph/node/labels.rb
192 def decorated_label_name
193   name =  case ActiveGraph::Config[:module_handling]
194           when :demodulize
195             self.name.demodulize
196           when Proc
197             ActiveGraph::Config[:module_handling].call self.name
198           else
199             self.name
200           end
201 
202   name.to_sym
203 end
find_by_id_or_ids(map_id, id) click to toggle source

rubocop:enable Naming/AccessorMethodName

    # File lib/active_graph/node/labels.rb
169 def find_by_id_or_ids(map_id, id)
170   if id.is_a?(Array)
171     find_by_ids(id.map(&map_id))
172   else
173     find_by_id(map_id.call(id))
174   end
175 end
find_callbacks!(result) click to toggle source
    # File lib/active_graph/node/labels.rb
177 def find_callbacks!(result)
178   case result
179   when ActiveGraph::Node
180     result.run_callbacks(:find)
181   when Array
182     result.each { |r| find_callbacks!(r) }
183   else
184     result
185   end
186 end
label_for_model() click to toggle source
    # File lib/active_graph/node/labels.rb
188 def label_for_model
189   (self.name.nil? ? object_id.to_s.to_sym : decorated_label_name)
190 end