fixing missing connection dependecy injection

app/repositories/orient_db/learning_object/relation.rb

@@ -3,8 +3,9 @@ module OrientDb
     class Relation < OrientDb::Relation
       include OrientDb::Methods::EdgeMethods
 
-      def initialize(learning_object)
+      def initialize(learning_object, connection)
         @learning_object = learning_object
+        @connection = connection
       end
 
     end

app/repositories/orient_db/learning_object/relations_chain.rb

@@ -4,9 +4,9 @@ module OrientDb
 
       def relations
         [
-            OrientDb::LearningObject::SubjectsRelations.new(object),
-            OrientDb::LearningObject::AttributesRelations.new(object),
-            OrientDb::LearningObject::PublisherRelation.new(object)
+            OrientDb::LearningObject::SubjectsRelations.new(object, connection),
+            OrientDb::LearningObject::AttributesRelations.new(object, connection),
+            OrientDb::LearningObject::PublisherRelation.new(object, connection)
         ]
       end
 

app/repositories/orient_db/relation.rb

@@ -2,7 +2,7 @@ module OrientDb
 
   ##abstract class Relation
   class Relation
-    
+
     def can_create?
       raise NotImplementedError, 'Relation#can_execute? is an abstract method.'
     end
@@ -13,6 +13,8 @@ module OrientDb
 
     protected
 
+    attr_accessor :connection
+
     def execute
       raise NotImplementedError, 'Relation#execute is an abstract method.'
     end

app/repositories/orient_db/relation_chain.rb

 module OrientDb
   class RelationChain
-    attr_reader :object
+    attr_reader :object, :connection
 
-    def initialize(object)
+    def initialize(object, connection)
       @object = object
+      @connection = connection
     end
 
     def create

app/repositories/orient_db/subject/relation.rb

@@ -3,8 +3,9 @@ module OrientDb
     class Relation < OrientDb::Relation
       include OrientDb::Methods::EdgeMethods
 
-      def initialize(subject)
+      def initialize(subject, connection)
         @subject = subject
+        @connection = connection
       end
 
     end

app/repositories/orient_db/subject/relations_chain.rb

@@ -4,8 +4,8 @@ module OrientDb
 
       def relations
         [
-            OrientDb::Subject::SubtopicsRelations.new(object),
-            OrientDb::Subject::SupertopicsRelations.new(object)
+            OrientDb::Subject::SubtopicsRelations.new(object, connection),
+            OrientDb::Subject::SupertopicsRelations.new(object, connection)
         ]
       end