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module Vedeu
# Repositories contain registerables, this module provides convenience methods
# for them.
#
# @api private
module Registerable
# These class methods are mixed into the repository.
module ClassMethods
# The null model is used when the repository cannot be found.
#
# @param klass [Class]
# @return [Symbol]
def null(klass)
define_method(:null_model) { klass }
end
# The real model is the usual model to use for a given repository.
#
# @param klass [Class]
# @return [Symbol]
def real(klass)
define_method(:model) { instance_variable_set('@model', klass) }
end
# Register a repository for storing models.
#
# @param model [Class]
# @param storage [Class|Hash]
# @return [Vedeu::Repository]
def register(model = nil, storage = {})
new(model, storage).tap do |klass|
Vedeu::Repositories.register(klass.repository)
end
end
# Returns the repositories registered.
#
# @note
# If the repository is 'Geometries', for example, then @models will be
# either an empty Geometries repository or the collection of stored
# models.
#
# @return [void]
def repository
@models ||= reset!
end
# Remove all stored models from the repository.
#
# @return [void]
def reset!
@models = register
end
alias_method :reset, :reset!
end # ClassMethods
# When this module is included in a class, provide ClassMethods as class
# methods for the class.
#
# @param klass [Class]
# @return [void]
def self.included(klass)
klass.send :extend, ClassMethods
end
end # Registerable
end # Vedeu
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10 entries across 10 versions & 1 rubygems