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PremekBrada.ComponentsSimplified HistoryHide minor edits - Show changes to output 04 April 2006, 14:46
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h1. COSI (Components Simplified) project This project aims at creating a barebone component model which is simple to implement and enhance. Its main purpose is to support research of component substitutability and versioning. h3. Key features of COSI (At the moment, these are the desiderata rather than finished features.) Component model * flat component model * pure black box, i.e. all features crossing the component surface are specified in its interface and their implementation is irrelevant * maximum simplicity ** in-process, i.e. no complications with distribution and remote access to component's services ** simple type system (using a restricted subset of Java types) ** communication with (external) clients/users via text console i/o (local user) or HTTP+HTML i/o (remote user) * introspection used to obtain all information about component's interface (deployment descriptor either not necessary at all, or just a convenient duplication of this information) * two variants WRT coverage of the ENT meta-model: ** '''minimalist''' -- at most 3 traits, purpose is experiments with substitutability ** '''feature rich''' -- as many traits as practical to obtain full coverage of the meta-model classification Implementation * Java * use of "Java annotations":http://java.sun.com/docs/books/jls/index.html for component specification (i.e. single language for specification and implementation) * component implementation and distribution format simple to create by hand h3. Further information Implementation of COSI: "work in progress":http://www.kiv.zcu.cz/~brada/vyuka/dipl/123/dp-2005-wajtr , first working results planned for Q4/2005 Sources of inspiration * the "SOFA component model":http://nenya.ms.mff.cuni.cz/ from Prague * "Agile manifesto":http://www.agilemanifesto.org/ * Enterprise JavaBeans as negative example Z MFF UK pochází "vymakaná implementace SOFA modelu":http://sofa.objectweb.org/index.phtml . Pro moje výzkumy potřebuju implementaci triviální, která bude klidně in-process (ne distribuovaná), bez protokolu, bez podpory distribuce komponent a dalších fíčur. Potřebuju hlavně, aby komponenty byly implementačně co nejjednodušší, šly snadno umístit (deploy) do kontejneru (jeho vytvoření je klíčová součást práce), a v tom aby byly snadno zjistitelné informace o ostatních komponentách. Implementace se předpokládá v Javě. ---- Back to ResearchPlan to:
(Moved to [[http://www.kiv.zcu.cz/~brada/research/ | my research pages]].) 04 April 2006, 14:34
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Z MFF UK pochází "vymakaná implementace SOFA modelu":http://sofa.objectweb.org/index.phtml . Pro moje výzkumy potřebuju implementaci triviální, která bude klidně in-process (ne distribuovaná), bez protokolu, bez podpory distribuce komponent a dalších fíčur. Potřebuju hlavně, aby komponenty byly implementačně co nejjednodušší, šly snadno umístit (deploy) do kontejneru (jeho vytvoření je klíčová součást práce), a v tom aby byly snadno zjistitelné informace o ostatních komponentách. Implementace se předpokládá v Javě. 03 April 2006, 10:22
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---- Back to ResearchPlan 29 June 2005, 11:50
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Component model Changed lines 13-16 from:
* in-process, i.e. no complications with distribution and remote access to component's services to:
* maximum simplicity ** in-process, i.e. no complications with distribution and remote access to component's services ** simple type system (using a restricted subset of Java types) ** communication with (external) clients/users via text console i/o (local user) or HTTP+HTML i/o (remote user) Added lines 18-22:
* two variants WRT coverage of the ENT meta-model: ** '''minimalist''' -- at most 3 traits, purpose is experiments with substitutability ** '''feature rich''' -- as many traits as practical to obtain full coverage of the meta-model classification Implementation Changed line 24 from:
* Java implementation to:
* Java Changed line 26 from:
* component implementation and distribution format should be relatively simple to create by hand to:
* component implementation and distribution format simple to create by hand 13 June 2005, 16:50
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(At the moment, these are the desiderata rather than finished features.) Changed lines 15-16 from:
* use of Java annotations for component specification (i.e. single language for specification and implementation) to:
* use of "Java annotations":http://java.sun.com/docs/books/jls/index.html for component specification (i.e. single language for specification and implementation) * component implementation and distribution format should be relatively simple to create by hand Changed lines 20-27 from:
Implementation of COSI: "work in progress":http://www.kiv.zcu.cz/~brada/vyuka/dipl/123/dp-2005-wajtr , first working results planned for Q4/2005 to:
Implementation of COSI: "work in progress":http://www.kiv.zcu.cz/~brada/vyuka/dipl/123/dp-2005-wajtr , first working results planned for Q4/2005 Sources of inspiration * the "SOFA component model":http://nenya.ms.mff.cuni.cz/ from Prague * "Agile manifesto":http://www.agilemanifesto.org/ * Enterprise JavaBeans as negative example 13 June 2005, 16:29
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TBD to:
This project aims at creating a barebone component model which is simple to implement and enhance. Its main purpose is to support research of component substitutability and versioning. h3. Key features of COSI * flat component model * pure black box, i.e. all features crossing the component surface are specified in its interface and their implementation is irrelevant * in-process, i.e. no complications with distribution and remote access to component's services * introspection used to obtain all information about component's interface (deployment descriptor either not necessary at all, or just a convenient duplication of this information) * Java implementation * use of Java annotations for component specification (i.e. single language for specification and implementation) h3. Further information Implementation of COSI: "work in progress":http://www.kiv.zcu.cz/~brada/vyuka/dipl/123/dp-2005-wajtr , first working results planned for Q4/2005 13 June 2005, 16:19
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Describe ComponentsSimplified here. to:
h1. COSI (Components Simplified) project TBD |