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module Neo4j::Mapping
module ClassMethods
module Property
# Generates accessor method and sets configuration for Neo4j node properties.
# The generated accessor is a simple wrapper around the #[] and
# #[]= operators.
#
# If a property is set to nil the property will be removed.
#
# ==== Example
# class Baaz; end
#
# class Foo
# include Neo4j::NodeMixin
# property :name, :city # can set several properties in one go
# property :bar
# end
#
# f = Foo.new
# f.bar = Baaz.new
#
def property(*props)
if props.size == 2 and props[1].kind_of?(Hash)
props[1].each_pair do |key, value|
pname = props[0].to_sym
_decl_props[pname] ||= {}
_decl_props[pname][key] = value
end
props = props[0..0]
end
props.each do |prop|
pname = prop.to_sym
_decl_props[pname] ||= {}
_decl_props[pname][:defined] = true
define_method(pname) do
self[pname]
end
name = (pname.to_s() +"=").to_sym
define_method(name) do |value|
self[pname] = value
end
end
end
# Returns true if the given property name has been defined with the class
# method property or properties.
#
# Notice that the node may have properties that has not been declared.
# It is always possible to set an undeclared property on a node.
#
# ==== Returns
# true or false
#
def property?(prop_name)
return false if _decl_props[prop_name.to_sym].nil?
_decl_props[prop_name.to_sym][:defined] == true
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems