Sha256: 77d0905cf0ddbb1f599384b367e78f3203aec24788bf44e469c67d5b11ba8656
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Versions: 7
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Contents
module ROM
class Repository
class RelationProxy
# Provides convenient methods for producing wrapped relations
#
# @api public
module Wrap
# Wrap other relations
#
# @example
# tasks.wrap(owner: [users, user_id: :id])
#
# @param [Hash] options
#
# @return [RelationProxy]
#
# @api public
def wrap(options)
wraps = options.map { |(name, (relation, keys))|
relation.wrapped(name, keys)
}
relation = wraps.reduce(self) { |a, e|
a.relation.for_wrap(e.meta.fetch(:keys), e.base_name.relation)
}
__new__(relation, meta: { wraps: wraps })
end
# Shortcut to wrap parents
#
# @example
# tasks.wrap_parent(owner: users)
#
# @return [RelationProxy]
#
# @api public
def wrap_parent(options)
wrap(
options.each_with_object({}) { |(name, parent), h|
keys = combine_keys(parent, relation, :children)
h[name] = [parent, keys]
}
)
end
# Return a wrapped representation of a loading-proxy relation
#
# This will carry meta info used to produce a correct AST from a relation
# so that correct mapper can be generated
#
# @return [RelationProxy]
#
# @api private
def wrapped(name, keys)
with(name: name, meta: { keys: keys, wrap: true, combine_name: name })
end
end
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems