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A Generic Meta-Model for Describing Component-Based Applications Using ENT

This paper introduces the ENT meta-model, designed to provide a comprehensive framework for describing component-based applications. It explores essential concepts, including the classification of components, their operational roles, and lifecycle stages within application development. Key components like bundles, their dependencies, and interactions are thoroughly analyzed. The ENT model aims to enable future automation in filtering, analyzing, and visualizing component data. Future prospects include creating advanced visualization tools that accommodate various user needs and enhance the application design experience.

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A Generic Meta-Model for Describing Component-Based Applications Using ENT

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  1. Jaroslav Šnajberk, Přemek Brada ComputerofComputerSciencesandEngineering FacultyofAppliedSciences University ofWest Bohemia in Pilsen ENT: A Generic Meta-Model forthedescriptionofComponent-basedApplications

  2. Agenda Introduction Basicsofthe ENT meta-model How to describecomponent model with ENT How to describeapplicationwith ENT

  3. Component-basedworld • Dozensofcomponentmodels • Differentapproaches to components • Generaldescriptiondoesn’t describealltheaspects • Inicializationisneeded (eg UML profiles) • Differentroles in componentdevelopmentlifecyclehavedifferentneeds

  4. The ENT meta-model Describes component model to provide meta information for description of application Description of component model is made to reflex all important information Uses classification system Enablesfutureautomatiziationoffiltering / analyzing / highlighting

  5. ENT classification Nature = {syntax, semantics, extra-functional} Kind = {operational, data} Role = {provided, required, neutral} Granularity = {item, structure, compound} Construct = {constant, instance, type} Presence = {mandatory, permanent, optional} Arity = {single, multiple} Lifecycle = {development, assembly, deployment, setup, runtime}

  6. Descriptionofcomponent model • Analyst • Has to understand CM • Evaluatesneeds • OSGi • Iscomposedfrombundles • Bundleshaveversionsanddefinitions in manifest • Communicationthroughservices

  7. Descriptionof single component Bundle-Name: cz.zcu.Addressbook Bundle-Version: 1.3.1 Require-Bundle: cz.zcu.Portal Export-Package: cz.zcu.address Import-package: org.osgi.web;version="1.2.0"

  8. Relations betweencomponents • Bindings • Element-Element • Component-Element • Component-Element • Component-Component • Subcomponents • Hierarchicaldecomposition

  9. Summary • OSGiapplicationdescribed by ENT • Anyothercomponent-basedapplicationcanbedescribed by ENT • Thefinal ENT model isreadyfor use by computer • Itcanfiltertraits by theircharacteristics • Itcanbeused in visualization, analytics, comparison

  10. Futurework • Componentapplicationvisualizer • ENT works as a data layer • Advancedvisualization style • Differentrepresentationofcomponent, relations and layout • Interactionwith user • Highlightingandfilteringbased on usersneeds • Unlimitednumberofothervisualizationstyles • Experimental

  11. Thankyou

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