WIP:

Modules/Core/ComponentInterface/include/selxNetworkBuilder.h

@@ -62,6 +62,9 @@ public:
   NetworkBuilder();
   virtual ~NetworkBuilder() {};
 
+  
+  virtual std::unique_ptr<NetworkBuilderBase> ConstructNewDerivedInstance(void);
+
   virtual bool AddBlueprint(const std::unique_ptr<Blueprint> &blueprint);
 
   /** Read configuration at the blueprints nodes and edges and return true if all components could be uniquely selected*/

Modules/Core/ComponentInterface/include/selxNetworkBuilder.hxx

@@ -29,6 +29,15 @@ NetworkBuilder<ComponentList>::NetworkBuilder() : m_isConfigured(false), m_Bluep
 {
 }
 
+template< typename ComponentList >
+std::unique_ptr<NetworkBuilderBase>
+NetworkBuilder<ComponentList>::ConstructNewDerivedInstance(void)
+{
+  return std::unique_ptr<NetworkBuilderBase>(new NetworkBuilder<ComponentList>);
+}
+
+
+
 template< typename ComponentList >
 bool
 NetworkBuilder<ComponentList>::AddBlueprint(const std::unique_ptr<Blueprint> &blueprint)

Modules/Core/ComponentInterface/include/selxNetworkBuilderBase.h

@@ -64,6 +64,9 @@ public:
 
   virtual ~NetworkBuilderBase() {};
 
+  /** To create a derived NetworkBuilder from a NetworkBuilderBase pointer without knowing the template arguments of the derived*/
+  virtual std::unique_ptr<NetworkBuilderBase> ConstructNewDerivedInstance(void) = 0;
+
   virtual bool AddBlueprint(const std::unique_ptr<Blueprint> &blueprint) = 0;
 
   /** Read configuration at the blueprints nodes and edges and return true if all components could be uniquely selected*/

Modules/Core/Filter/src/selxSuperElastixFilter.cxx

@@ -85,22 +85,19 @@ SuperElastixFilter
   // the component selectors until no more unique components can be found.
   if (!this->m_Blueprint)
   {
+    //TODO: remove this check here by making m_Blueprint primary input
     itkExceptionMacro(<< "Setting a Blueprint is required first.")
   }
-  if (this->m_Blueprint->Modified())
+  if (this->m_Blueprint->GetMTime() > this->GetMTime())
   {
-    // Was m_Blueprint modified by Set() or by AddBlueprint?
-
+    // Was Blueprint modified by Set() or by AddBlueprint?
+    // delete previous blueprint and start all over with new one
+    m_NetworkBuilder = m_NetworkBuilder->ConstructNewDerivedInstance();
+    this->m_NetworkBuilder->AddBlueprint(this->m_Blueprint->Get());
   }
 
-
-    this->m_NetworkBuilder->AddBlueprint(this->m_Blueprint->Get());
     this->m_AllUniqueComponents = this->m_NetworkBuilder->Configure();
     
-  if (this->m_BlueprintConnectionModified == true)
-  {
-//TODO: 
-  }
 
   if( ( m_InputConnectionModified == true ) || ( this->m_BlueprintConnectionModified == true ) )
   {