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Contents
require 'active_support/inflector'
class Neo4j::Node
# The wrapping process is what transforms a raw CypherNode or EmbeddedNode from Neo4j::Core into a healthy ActiveNode (or ActiveRel) object.
module Wrapper
# this is a plugin in the neo4j-core so that the Ruby wrapper will be wrapped around the Neo4j::Node objects
def wrapper
found_class = class_to_wrap
return self if not found_class
found_class.new.tap do |wrapped_node|
wrapped_node.init_on_load(self, self.props)
end
end
def class_to_wrap
load_classes_from_labels
(named_class || ::Neo4j::ActiveNode::Labels.model_for_labels(labels)).tap do |model_class|
Neo4j::Node::Wrapper.populate_constants_for_labels_cache(model_class, labels)
end
end
private
def load_classes_from_labels
labels.each { |label| Neo4j::Node::Wrapper.constant_for_label(label) }
end
# Only load classes once for performance
CONSTANTS_FOR_LABELS_CACHE = {}
def self.constant_for_label(label)
CONSTANTS_FOR_LABELS_CACHE[label] || CONSTANTS_FOR_LABELS_CACHE[label] = constantized_label(label)
end
def self.constantized_label(label)
"#{association_model_namespace}::#{label}".constantize
rescue NameError
nil
end
def self.populate_constants_for_labels_cache(model_class, labels)
labels.each do |label|
CONSTANTS_FOR_LABELS_CACHE[label] = model_class if CONSTANTS_FOR_LABELS_CACHE[label].nil?
end
end
def self.association_model_namespace
Neo4j::Config.association_model_namespace_string
end
def named_class
property = Neo4j::Config.class_name_property
Neo4j::Node::Wrapper.constant_for_label(self.props[property]) if self.props.is_a?(Hash) && self.props.key?(property)
end
end
end
Version data entries
52 entries across 52 versions & 1 rubygems