Labels

Provides a mapping between neo4j labels and Ruby classes

• InvalidQueryError
• RecordNotFound
• ClassMethods

Constants

• WRAPPED_CLASSES
• MODELS_FOR_LABELS_CACHE

Files

• lib/neo4j/active_node/labels.rb:4

Methods

._wrapped_classes

+ show/hide code

def self._wrapped_classes
  Neo4j::ActiveNode::Labels::WRAPPED_CLASSES
end

#add_label

adds one or more labels

+ show/hide code

def add_label(*label)
  @_persisted_obj.add_label(*label)
end

.add_wrapped_class

+ show/hide code

def self.add_wrapped_class(model)
  _wrapped_classes << model
end

.clear_model_for_label_cache

+ show/hide code

def self.clear_model_for_label_cache
  MODELS_FOR_LABELS_CACHE.clear
end

.clear_wrapped_models

+ show/hide code

def self.clear_wrapped_models
  WRAPPED_CLASSES.clear
end

#labels

+ show/hide code

def labels
  @_persisted_obj.labels
end

.model_cache

+ show/hide code

def self.model_cache(labels)
  models = WRAPPED_CLASSES.select do |model|
    (model.mapped_label_names - labels).size == 0
  end

  MODELS_FOR_LABELS_CACHE[labels] = models.max do |model|
    (model.mapped_label_names & labels).size
  end
end

.model_for_labels

+ show/hide code

def self.model_for_labels(labels)
  MODELS_FOR_LABELS_CACHE[labels] || model_cache(labels)
end

#remove_label

Removes one or more labels Be careful, don’t remove the label representing the Ruby class.

+ show/hide code

def remove_label(*label)
  @_persisted_obj.remove_label(*label)
end