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	1	+= The REQUEA Platform =
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	3	+The REQUEA Platform is a component that is typically installed in a standard web application server (J2EE such as Tomcat, JBoss, OracleAS, JonAs) and provides:
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	5	+* An OSGi architecture within the web application for modularity and extensibility of the platform
	6	+* An document based model architecture (MDA) for creating document based application where the data manipulated is easily and effitiently stored in a database (such as Oracle, MySQL, Microsoft SQL Server).
	7	+* A web user interface that is optimized for speed, ergonomics and complex interactivity with the user.
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	9	+= Platform services =
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	11	+The platform runs on top of standard J2EE application server and uses J2EE services provided by the environment (such as Servlets, JDBC, ...).
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	13	+The platform provides the following services:
	14	+
	15	+* database storage persistence service
	16	+* application business rules
	17	+* user interface service
	18	+* import / export services
	19	+* WebServices interfaces (SOAP)
	20	+* Java Content Repository interface
	21	+* Workflow services
	22	+* Reporting services (JasperReports integration)
	23	+* Graphs and Statistics services
	24	+
	25	+All those base services are provided as OSGi services (packaged in bundles)
	26	+
	27	+On top of those base services, we find the applications that are also OSGi bundles:
	28	+
	29	+* Core applications, such as security and user definitions
	30	+* Standard applications, such as calendar, events, resources and catalog management
	31	+* Applications such as ITIL incident management
	32	+* Customer Specific applications where customer specific code may be created
	33	+* Customer customization where changes in labels, workflows, ... for a specific implementation can be added.
	34	+
	35	+[[image:architecture.png]]
	36	+
	37	+See a general architecture presentation:
6	6	[[General Architecture Presentation>>attach:architecture-general.pdf]]
	39	+
	40	+= Applications and Bundles =
	41	+
	42	+Applications are packaged in OSGi bundles (see bundles: [[Bundles>>Bundles]]) that can be deployed on a modular fashion. This provides flexibility and modularity to the platform.
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architecture.png

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	1	+XWiki.pdubois

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