wip - provide command compiler via configuration

lib/rom/components/core.rb

@@ -43,6 +43,11 @@ def relations
         configuration.relations
       end
 
+      # @api public
+      def command_compiler
+        configuration.command_compiler
+      end
+
       # @api public
       def notifications
         configuration.notifications

lib/rom/components/relation.rb

@@ -25,7 +25,7 @@ def adapter
       # @return [ROM::Relation]
       #
       # @api public
-      def build(command_compiler:)
+      def build
         unless adapter
           raise MissingAdapterIdentifierError,
                 "Relation class +#{constant}+ is missing the adapter identifier"
@@ -60,7 +60,7 @@ def build(command_compiler:)
         relation = constant.new(dataset, **options)
 
         # TODO: this will be removed once command registry is lazy-by-default
-        finalize_commands(command_compiler, relation)
+        finalize_commands(relation)
 
         relation
       end
@@ -86,7 +86,7 @@ def finalize_mappers
       end
 
       # @api private
-      def finalize_commands(command_compiler, relation)
+      def finalize_commands(relation)
         commands = components.commands
           .select { |command| command.relation_name == constant.relation_name.relation }
           .map { |command| command.build(relation: relation) }

lib/rom/configuration.rb

@@ -76,6 +76,17 @@ def finalize
       self
     end
 
+    # @api private
+    def command_compiler
+      @command_compiler ||= CommandCompiler.new(
+        gateways,
+        relations,
+        Registry.new,
+        notifications,
+        inflector: inflector
+      )
+    end
+
     # Apply a plugin to the configuration
     #
     # @param [Mixed] plugin The plugin identifier, usually a Symbol

lib/rom/setup/finalize.rb

@@ -56,18 +56,8 @@ def relations
     #
     # @api private
     def load_relations
-      command_compiler = CommandCompiler.new(
-        configuration.gateways,
-        relations,
-        Registry.new,
-        notifications,
-        inflector: configuration.inflector
-      )
-
       components.relations.each do |component|
-        relation = component.build(command_compiler: command_compiler)
-
-        relations.add(component.key, relation)
+        relation = relations.add(component.key, component.build)
 
         notifications.trigger(
           "configuration.relations.object.registered",