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Versions: 11
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Contents
module Frodo
class NavigationProperty
class Proxy
def initialize(entity, nav_name)
@entity = entity
@nav_name = nav_name
end
def value=(value)
@value = value
end
def value
if link.nil?
if nav_property.nav_type == :collection
[]
else
nil
end
else
@value ||= fetch_result
end
end
private
attr_reader :entity, :nav_name
def service
@service ||= Frodo::ServiceRegistry[entity.service_name]
end
def namespace
@namespace ||= service.namespace
end
def schema
@schema ||= service.schemas[namespace]
end
def entity_type
@entity_type ||= entity.name
end
def link
entity.links[nav_name]
end
def nav_property
schema.navigation_properties[entity_type][nav_name]
end
def fetch_result
raise "Invalid navigation link for #{nav_name}" unless link[:href]
options = {
type: nav_property.entity_type,
namespace: namespace,
service_name: entity.service_name
}
entity_set = Struct.new(:service, :entity_options)
.new(entity.service, options)
query = Frodo::Query.new(entity_set)
begin
result = query.execute(link[:href])
rescue => ex
raise ex unless ex.message =~ /Not Found/
result = []
end
if nav_property.nav_type == :collection
result
else
result.first
end
end
end
end
end
Version data entries
11 entries across 11 versions & 1 rubygems