Curs 4 Adrian Iftene [email protected] · 2011-11-05 · 11 Why model software? Today, software...
Transcript of Curs 4 Adrian Iftene [email protected] · 2011-11-05 · 11 Why model software? Today, software...
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Nu se vor considera în valorile maxime de la laborator
Prezentarea contextului și a acestor soluții la curs vă poate dubla punctajul considerat pentru problema opțională
Scopul este de a face la fiecare curs “ședințe ale diavolului” în care să prezentați ce ați lucrat la problemele opționale, iar colegii să încerce să identifice punctele slabe și să vi le critice
În urma acestor ședințe prezentatorii vor vedea alte puncte de vedere, iar ascultătorii vor putea “fura” idei pe care să le folosească la proiectele proprii
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Punctajul la aceste prezentări poate fi considerat și în contul componentei de cercetare
Cei interesați vor lua legătura cu mine, vor face o prezentare de 10-15 slide-uri pe care o vor da din timp colegilor spre analiză
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Recapitulation course 2 ◦ SCM
◦ MDD (MDA, AMDD)
◦ TDD
◦ DSL (EMF)
Modeling ◦ EMF
◦ IBM Rational Rose Modeler
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PIM – platform independent model
DSL – domain specific language
PSM – platform specific model
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DSL – Domain specific language
Examples: Logo, YACC, SQL, XSLT, Media Wiki, LaTex, BibTex
EMF - Eclipse Modeling Framework
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Who? ◦ Business analysts, engineers, scientists
What is modeling? ◦ A real item that is being built
◦ Scaled mock-ups of airplanes, houses or automobiles
◦ Business financials models, market trading simulations, electrical circuit diagrams
Why model? ◦ The answer has to do with the complexity, the risk and the fact
that original practitioners are not always appropriate or even available for completing the task
◦ While professional architects might build a doghouse without a design diagram, they would never construct a 15-story office building without first developing an array of architectural plans, diagrams and some type of a mock-up for visualization
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Why model software? ◦ Today, software systems have become very complex
◦ They must be integrated with other systems
By modeling software, developers can: ◦ Create and communicate software designs before committing
additional resources
◦ Trace the design back to the requirements, helping to ensure that they are building the right system
◦ Practice iterative development, in which models and other higher levels of abstraction facilitate quick and frequent changes
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To better understand the business or engineering situation at hand (“as-is” model) and to craft a better system (“to-be” model)
To build and design a system architecture
To create visualizations of code and other forms of implementation
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IDEs can be considered an entry point into the practice of MDD
IDEs Tools are language-sensitive editors, wizards, form builders and other GUI controls are not “models” in the more strict sense of the term
They can raise the level of abstraction above source code, make developers more productive, help create more reliable code and enable a more effective maintenance process
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The ability to visualize source code in graphical form
Developers have used graphical forms of abstraction above their code for many years:
◦ Flow charts
◦ Structure charts
◦ Simple block diagrams with arrows
◦ For object-oriented software, boxes typically denote classes and lines between boxes denote relationships
Such depictions do not constitute a “model”, but can be considered a platform-specific model (PSM)
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Visual models are created from a methodological process that begins with requirements and delves into a high-level architectural design model
Developers then create a detailed design model from which skeletal code is generated to an IDE
The IDE is used to complete the detailed coding
Any changes made to the code that affect the design model are synchronized back into the model; any model changes are synchronized into the existing code
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Modeling legacy systems does not necessarily mean that the entire system and all its components must be incorporated
Developers should understand the legacy systems’ architectures, how they work and how they interface with others
Methods: Developers can reverse engineer code into models to understand them, manually model them or use some combination thereof
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The premise is simply to provide highly productive ways to generate and maintain code
RAD, distinct from both code-centric and model-driven development, raises the level of abstraction above the code, but does not use “models”
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First analysts create “as-is” models of how their systems work today
After that, “to-be” models can be built to prescribe how new, improved processes should work
For some application domains, the “to-be” models are specified to such rigor that complete applications can be generated from the models
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Beyond visual modeling - Meta-modeling is the discipline of having “models of models”
Unifying software, data and business modeling - through a combination of multiple, open industry standards that are converging
Modeling across the life cycle - modeling will become applicable to an even broader range of activities across the software development life cycle
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Domain-specific modeling languages - to provide abstractions for specifying problems and solutions in a more productive and effective manner
The business of software development - With today’s technology, the software development has no geographical boundaries. The business of software development will likely continue to be distributed and global
Model-Driven Architecture (MDA) - the next logical step in the evolution of MDD
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EMF is based on Ecore and Genmodel models
Ecore metamodel contains the information about the defined classes
Ecore model elements: ◦ EClass : represents a class (attributes and references)
◦ EAttribute : represents an attribute (name and a type)
◦ EReference : represents one end of an association between two classes
◦ EDataType : represents the type of an attribute, e.g. int, float or java.util.Date
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Provides a common modeling language and environment for faster creation of quality software, it offers analysis patterns support based on GOF
Integrates with other IBM Rational lifecycle development tools, can integrate with any SCC-compliant version control system, including IBM Rational Clear Case and delivers Web publish models and reports to improve communication across the extended team
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Modeling tool for analysts and software architects
IBM Rational Rose Data Modeler offers a sophisticated visual modeling environment for database application development
Accelerate your processes by connecting the database designers to the rest of the development team
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We can see how the application accesses the database
Enables the creation of the models (object, data and data storage) and provides the ability to map logical and physical models
Supports round-trip engineering between the data model, object model and defined data language (DDL) file/database management system (DBMS)
Offers a data model-object model comparison wizard, supports forward engineering of an entire database at a time
Provides Web publish models and reports
OS: HP-UX, Solaris (Sun microsystems), Windows
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Diagrams: Class, Component, Deployment, Sequence, Statechart, Use Case, Collaboration
Domains, Windows: UML 1.x
Model-Driven Development: Patterns
Team Support: Merge Changes, Repository / CM
Documentation / Reporting: SoDA Integration, Print Diagrams, Web Publishing and Report Generation
Modeling tool for analysts and software architects
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Logical Data Model (Import, Modify) => Data Modeler: Database + Schema => Transform to Data Model => New Data Model Diagram
=> Forward Engineer =>
=> DDL file (tables, views, relations, etc.)
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Select “Database” created at previous step
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Use EMF (Ecore or Genmodel models) or IBM Rational Rose to create an model, and use it in a new project component related to your project theme
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Eclipse Modeling Framework (EMF) – Tutorial http://www.vogella.de/articles/EclipseEMF/article.html
Discover the Eclipse Modeling Framework (EMF) and Its Dynamic Capabilities http://www.devx.com/Java/Article/29093
TDD: http://test.ical.ly/2010/03/31/testgetriebene-entwicklung-tdd-einer-funktion-meines-symfony-plugins/
Eclipse Update Manager: http://www.vogella.de/articles/Eclipse/article.html#updatemanager
Eclipse RCP Tutorial: http://www.vogella.de/articles/EclipseRCP/article.html
Eclipse Plugin Development Tutorial: http://www.vogella.de/articles/EclipsePlugIn/article.html
IBM Rational Rose Data Modeler: http://www-01.ibm.com/software/awdtools/developer/datamodeler/
How to migrate UML models to Rational Software Architect: http:// www.ibm.com/developerworks/rational/library/08/0129_ali_gangulli
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How to migrate Rose UML model subunits to Rational Software Architect: http://www.ibm.com/developerworks/rational/library/10/part2howtomigrateroseumlmodelsubunitstorationalsoftwarearchitect/
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Cernosek, G., Naiburg, E.: Whitepaper: The value of modeling. IBM Rational Software, June 2004 ftp://ftp.software.ibm.com/software/rational/web/whitepapers/ValueOfModeling.pdf
Rose Data Modeler (logical): http://www.cs.utexas.edu/users/smriti/ta/ee382v/rose/DataModelerTutorial-Logical.pdf