Hello Pieter, Wednesday, September 7, 2005, 10:42:35 AM, you wrote:
PVG> Hi Matthias, >> An interesting consequence is that UML2MOF generates the union of both >> metamodels into the Spring metamodel. This is not quite what we >> expected, right? On the other hand, it may help us because ATL will >> easily be able to find the 3GL metaclasses, then. I am not sure yet. PVG> This is normal. I'm using a metamodel (for traceability) that imports PVG> the UML metamodel. The JMI interfaces generated for my traceability PVG> models include those for UML models. It's even so that I can only PVG> associate a traceability node with a UML model element if I load my PVG> UML-XMI files into an extent conforming to the UML metapackage from PVG> the traceability models. Elements in extents conforming to the UML PVG> metapackage from the standard UML DI metamodel cannot be referenced PVG> from my traceability elements. Yes, that's what I expected after I saw the Spring metamodel in XMI. It's good to get your confirmation of this fact. PVG> I do wonder why the Spring metamodel uses the 3GL metamodel. Do you PVG> just want to reuse elements declared in the 3GL metamodel or do you PVG> still consider the 3GL elements as being from another metamodel? Well, I'd like to do the following: A Spring service is an element of the new metamodel for Spring apps (just to tell you an example). It has a 1:0..n association to the Method metaclass fromt the 3GL metamodel, because a Spring service has methods. There will be two M2M transformations: * one from UML to Spring * one from Spring to 3GL Part of the first transformation will be a rule "UMLOpTo3GLMethod" that transforms UML Operations into 3GL Methods, e.g. the methods of the Spring services. Part of the second transformation will be a rule "SpringServiceTo3GLClasses" to transform a Spring service into a service interface, a service impl base and a service impl which will be just 3 instances of the Class metaclass from the 3GL metamodel. Inside SpringServiceTo3GLClasses, there will be code to duplicate the service methods into the service interface (signature only) and the service base implementation (signature plus new body for exception handling and delegate to the "handle..." method). Now this is the trick: I want to re-use the same ATL code that I need for "UMLOpTo3GLMethod" again in the Java cartridge. The difficulty is to write the rule so that it works identically on the pure 3GL as well as the "enriched" Spring metamodel. The metaclasses would be the same (UML!Operation and ???!Method) but the "???" would once be the 3GL package included in the Spring metamodel and once be the "pure, original" 3GL package in the 3GL metamodel used in the Java cartridge. Do you think this is possible? What would be the correct syntax for "???" ? Cheers... Matthias --- Matthias Bohlen Beratung, Schulung, Coaching für IT-Projekte Internet: http://www.mbohlen.de/ [EMAIL PROTECTED] ------------------------------------------------------- SF.Net email is Sponsored by the Better Software Conference & EXPO September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf
