Metamodeling - Advanced Software Engineering Course 2014/2015
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The document discusses metamodeling in advanced software engineering, emphasizing the significance of modeling as an abstraction representing reality for cognitive purposes. It explains the creation of domain-specific languages and machine-readable models to facilitate communication among stakeholders in software development. Furthermore, it describes the design and implementation of a digital library management system using the Eclipse EMF framework.
![Digital Library System
Reqs Specs
We want to build a distributed software system for managing a
Digital Library. The customers can access the digital edition (e.g.
PDF or PS file format) from a client application. On the server
side, the system stores the description of the documents (its
name, type, authors…). The librarian, properly logged within the
system as “librarian” can add, modify, or delete the documents….
The distributed system can be implemented using JAVA based
technologies …[…]](https://image.slidesharecdn.com/metamodeling2014-141022095531-conversion-gate01/85/Metamodeling-Advanced-Software-Engineering-Course-2014-2015-13-320.jpg)
Metamodeling - Advanced Software Engineering Course 2014/2015
- 1. Metamodeling Lab (Advanced Software Engineering course) a.y. 2014/2015 Luca Berardinelli Post Doc @ DISIM University of L’Aquila
- 2. Copyright Notice The material in these slides may be freely reproduced and distributed, partially or totally, as far as an explicit reference or acknowledge to the material author is preserved.
- 3. Lecturer
- 4. What does “modeling” stand for? "Modeling, in the broadest sense, is the cost-effective use of something in place of something else for some cognitive purpose. It is simpler, safer or cheaper than reality”. A model represents reality for the given purpose; the model is an abstraction of reality in the sense that it cannot represent all aspects of reality.
- 5. Is Cristoforo Colombo a modeler? Sailors have drawn maps to travel around the world. Cognitive purpose: e.g., to support commercial/military activities Sailor <<specified in>> <<creates>> map(s) <<read by>> Sailor <<represented by>> REALITY (world) language? language? <<specified in>> <<defines>> you today
- 6. Is Cristoforo Colombo a modeler? Sailors have drawn maps to travel around the world. Cognitive purpose: e.g., to support commercial/military activities map(s) <<represented by>> <<specified in>> REALITY (world) language? language? <<specified in>> M0 M1 M3 M2
- 7. Maps today: from M0 to M3 M3 : <MetaMetaModel> M2 : <MetaModel> M1 : <Model> M0 : <Data,Reality>
- 8. The right answers M3 : It is not on the map. It provides the concepts to define different legends (M2) M2 : The legend list that provides decoding info, the concepts to build model) M1 : The map itself except... M0 : It is under your feet!
- 9. A Model-Driven Software Process Problem domain < abstraction gap > Solution domain (sw) Reqs Specs Design Implementation Deployment Runtime MMM MMM MMM MMM MMM Different artifacts (e.g., models) can be created during the development process. These artifacts may be used for communication purposes among stakeholders (architects, designers, programmers...) In MDE, these artifacts must be machine readable!
- 10. New Domain: Software Engineering Which language(s)? Do we need new, domain specific languages? How do we create new languages? Designer Designer, Programmer, .... language? <<specified in>> language(s)? REALITY <<specified in>> (software system) <<defines>> you today <<represented by>>
- 11. New Domain: Software Engineering Which language(s)? Do we need new, domain specific languages? How do we create new languages? Designer Designer, Programmer, .... <<specified in>> REALITY (software system) EBNF Java <<specified in>> <<defines>> you today <<represented by>> http://cs.fit.edu/~ryan/cse4251/mini_java_grammar.html
- 12. New Domain: Software Engineering Which language(s)? Do we need new, domain specific languages? How do we create new languages? Designer Designer, Programmer, .... <<specified in>> REALITY (software system) Ecore MyLanguage <<specified in>> <<defines>> you today <<represented by>> Modeling Framework (EMF) Rich Client Platform (RCP)
- 13. Digital Library System Reqs Specs We want to build a distributed software system for managing a Digital Library. The customers can access the digital edition (e.g. PDF or PS file format) from a client application. On the server side, the system stores the description of the documents (its name, type, authors…). The librarian, properly logged within the system as “librarian” can add, modify, or delete the documents…. The distributed system can be implemented using JAVA based technologies …[…]
- 14. Design Library Metamodel (M2) LIBRARY Metamodel (Ecore) We define a very simple “domain-specific” language for modeling libraries. We use Ecore provided by Eclipse EMF. You can use any editor capable to “save” this artifact “as” *.ecore http://help.eclipse.org/help33/index.jsp?topic=/org.eclipse.emf.doc/tutorials/clibmod/clibmod.html
- 15. Library Model Editor (M1) Design We implement an Editor to realize Library Models using Eclipse RCP plugin. Conforms to Library Editor (Eclipse RCP App) http://help.eclipse.org/help33/index.jsp?topic=/org.eclipse.emf.doc/tutorials/clibmod/clibmod.html
- 16. My Library Model (M1): serialization <?xml version="1.0" encoding="UTF-8"?> <Library:Library xmlns:Library="http://Library" xmlns:_="" name="Luca's Library"> <writers _:books="#//@books.1" name="Luca Berardinelli"/> <writers _:books="#//@books.0" name="Unknown"/> <books writers="#//@writers.1" title="Alone in The Dark" pages="123"/> <books writers="#//@writers.0" title="My Life" pages="400" category="Bibiography"/> </Library:Library> An modeler is able to structure and store information about a specific domain in a machine-readable way, so that software can “reason” about such a domain.
- 17. A real library (M0)