Labels.rst

Labels

Provides a mapping between neo4j labels and Ruby classes

Labels/InvalidQueryError

Labels/RecordNotFound

Labels/ClassMethods

Constants

• WRAPPED_CLASSES
• MODELS_FOR_LABELS_CACHE

Files

• lib/neo4j/active_node/labels.rb:4

Methods

._wrapped_classes

ruby

def self._wrapped_classes

Neo4j::ActiveNode::Labels::WRAPPED_CLASSES

end

#add_label

adds one or more labels

ruby

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

.add_wrapped_class

ruby

def self.add_wrapped_class(model)

_wrapped_classes << model

end

.clear_model_for_label_cache

ruby

def self.clear_model_for_label_cache

MODELS_FOR_LABELS_CACHE.clear

end

.clear_wrapped_models

ruby

def self.clear_wrapped_models

WRAPPED_CLASSES.clear

end

#labels

ruby

def labels

@_persisted_obj.labels

end

.model_cache

ruby

def self.model_cache(labels)

models = WRAPPED_CLASSES.select do

(model.mapped_label_names - labels).size == 0

end

MODELS_FOR_LABELS_CACHE[labels] = models.max do

(model.mapped_label_names & labels).size

end

end

.model_for_labels

ruby

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.

ruby

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