Refactor Models for Independence from the Rails App

app/controllers/dataset_controller.rb

@@ -1,5 +1,4 @@
 class DatasetController < ApplicationController
-
   def index
     @data = built_dataset
 
@@ -15,8 +14,6 @@ def index
   private
 
   def built_dataset
-    DatasetBuilder.new.build
+    LinkedDataFragments::DatasetBuilder.new.build
   end
-
-
 end

app/models/setting.rb

@@ -1,62 +1,3 @@
 ##
-# A class to hold site-wide configuration.
-# @todo extract to a configuration file.
-class Setting
-  class << self
-    def config
-      @config ||= YAML::load(File.open(config_path))[env]
-      .with_indifferent_access
-    end
-
-    def app_root
-      return @app_root if @app_root
-      @app_root = Rails.root if defined?(Rails) and defined?(Rails.root)
-      @app_root ||= APP_ROOT if defined?(APP_ROOT)
-      @app_root ||= '.'
-    end
-
-    def env
-      return @env if @env
-      #The following commented line always returns "test" in a rails c production console. Unsure of how to fix this yet...
-      #@env = ENV["RAILS_ENV"] = "test" if ENV
-      @env ||= Rails.env if defined?(Rails) and defined?(Rails.root)
-      @env ||= 'development'
-    end
-
-    def config_path
-      File.join(app_root, 'config', 'ldf.yml')
-    end
-
-    def uri_endpoint
-      Setting.config[:uri_endpoint] || 'http://localhost:3000/{?subject}'
-    end
-
-    def uri_endpoint_route
-      if uri_endpoint.match(/^http[s]*\:\/\/.+\//)
-        endpoint = uri_endpoint.gsub(/^http[s]*\:\/\/[^\/]+/, '')
-        endpoint.gsub!('{?subject}', '*subject')
-      else
-        #FIXME: What type of error should this be? Need to unit test this as well once figured out.
-        raise ArgumentError, 'Invalid uri endpoint url specified'
-      end
-
-      return endpoint
-    end
-
-    def uri_root
-      Setting.config[:uri_root] || 'http://localhost:3000/#dataset'
-    end
-
-    def cache_backend
-      Setting.config[:cache_backend][:provider] || 'marmotta'
-    end
-
-    def cache_backend_url
-      Setting.config[:cache_backend][:url] || 'http://localhost:8988/marmotta'
-    end
-
-    def cache_backend_context
-      Setting.config[:cache_backend][:context] || 'linked_data_fragments_unknown'
-    end
-  end
-end
+# An alias to LinkedDataFragments::Settings
+Setting = LinkedDataFragments::Settings

lib/linked_data_fragments.rb

@@ -2,11 +2,16 @@
 
 # must require 'rdf/vocab' first, due to const_missing metaprogramming in 
 # pre-2.0 verisons
-require 'rdf/vocab' 
+require 'rdf/vocab'
 require 'rdf/vocab/hydra'
 require 'rdf/vocab/void'
 
+require 'linked_data_fragments/settings'
+
+require 'linked_data_fragments/builders'
 require 'linked_data_fragments/schemas'
+require 'linked_data_fragments/models'
+require 'linked_data_fragments/hydra_template'
 
 ##
 # A linked data caching fragment

lib/linked_data_fragments/builders.rb

@@ -0,0 +1,3 @@
+require 'linked_data_fragments/builders/control_builder'
+require 'linked_data_fragments/builders/dataset_builder'
+require 'linked_data_fragments/builders/template_builder'

lib/linked_data_fragments/builders/control_builder.rb

@@ -0,0 +1,26 @@
+module LinkedDataFragments
+  class ControlBuilder
+    ##
+    # @!attribute [rw] control
+    #   @return []
+    # @!attribute [rw] property
+    #   @return [RDF::URI]
+    attr_accessor :control, :property
+
+    ##
+    #
+    def initialize(control, property)
+      @control = control
+      @property = property
+    end
+
+    ##
+    # @return [Control]
+    def build
+      Control.new.tap do |t|
+        t.variable = control
+        t.property = property
+      end
+    end
+  end
+end

lib/linked_data_fragments/builders/dataset_builder.rb

@@ -0,0 +1,69 @@
+module LinkedDataFragments
+  ##
+  # A Builder for Dataset instances.
+  #
+  # @example Building a dataset
+  #   builder = DatasetBuilder.new
+  #   builder.uri_endpoint = HydraTemplate.new('http://example.com/{?subject}')
+  #   dataset = builder.build
+  #
+  #   dataset.dump :ttl
+  #   # <http://localhost:3000/#dataset> a <http://www.w3.org/ns/hydra/core#Collection>,
+  #   #    <http://rdfs.org/ns/void#Dataset>;
+  #   # <http://rdfs.org/ns/void#uriLookupEndpoint> "http://example.com/{?subject}";
+  #   # <http://www.w3.org/ns/hydra/core#search> [
+  #   #    <http://www.w3.org/ns/hydra/core#mapping> [
+  #   #       <http://www.w3.org/ns/hydra/core#property> <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject>;
+  #   #       <http://www.w3.org/ns/hydra/core#variable> "subject"
+  #   #    ];
+  #   #    <http://www.w3.org/ns/hydra/core#search> "http://example.com/{?subject}"
+  #   # ] .
+  class DatasetBuilder
+    # @!attribute [w]
+    #   @return [HydraTemplate]
+    attr_writer :uri_endpoint
+
+    def build
+      Dataset.new(uri_root).tap do |dataset|
+        dataset.uri_lookup_endpoint = uri_endpoint.to_s
+        dataset.search = template_builder.new(dataset, uri_endpoint).build
+
+        uri_endpoint.controls.each do |control|
+          dataset.search.first.mapping << 
+            control_builder.new(control, control_mapping[control]).build
+        end
+      end
+    end
+
+    ##
+    # @return [HydraTemplate]
+    # @see Settings#uri_endpoint
+    def uri_endpoint
+      @uri_endpoint ||= 
+        LinkedDataFragments::HydraTemplate
+          .new(Settings.uri_endpoint)
+    end
+
+    ##
+    # @return [String] a URI-like string representing the root URI
+    #
+    # @see Settings#uri_root
+    def uri_root
+      Settings.uri_root
+    end
+
+    private
+
+    def template_builder
+      TemplateBuilder
+    end
+
+    def control_builder
+      ControlBuilder
+    end
+
+    def control_mapping
+      { "subject" => RDF.subject }
+    end
+  end
+end

lib/linked_data_fragments/builders/template_builder.rb

@@ -0,0 +1,26 @@
+module LinkedDataFragments
+  ##
+  # A Builder for Templates.
+  class TemplateBuilder
+    ##
+    # @!attribute [r] dataset_node
+    #   @return [Dataset]
+    # @!attribute [r] uri_template
+    #   @return [String]
+    attr_reader :dataset_node, :uri_template
+
+    ##
+    # @param dataset_node [Dataset]
+    # @param uri_template [#to_s]
+    def initialize(dataset_node, uri_template)
+      @dataset_node = dataset_node
+      @uri_template = uri_template.to_s
+    end
+
+    def build
+      Template.new(nil, dataset_node).tap do |template|
+        template.template = self.uri_template
+      end
+    end
+  end
+end