The document presents 'xeo,' an open-source implementation of extensible enterprise objects designed to address challenges in software development by focusing on business objects and processes. It emphasizes the integration of xeo models and web components, allowing for responsive and incremental software development. The document outlines the architecture of xeo, including its core system, business logic, and the ability to adapt to changes quickly.

1. Agile Programming: eXtensible Enterprise Objects, a practical open-source implementationBy Pedro Rio

2. AgendaThe challengeSoftware Development – We’re not there yet...Programmers speak bytes, owners speak businessLongdevelopmentcycles vs fastbusinesschangesStrong dependence on developers skills and styleBudget & deadline++ and features & functions--Art vs EngineeringHow to contribute?6/20/20112

3. AgendaThe paradigmHow to approach the problem?Focused on data?Changes to muchKeep being optimizedFocused on processes?Focused on Business Objects?Business Objects are stable & independent of technical detailsA notation to describe Business ObjectsRe-use of business objects!3rd Party IndependenceLack of such toolChallenge Accepted!6/20/20113

4. AgendaXEO OverviewXEO – eXtensible Enterprise Objects: OverviewRUNTIME ARCHITECTUREDEVELOPER ARCHITECTUREXEO CLIENT CONTROLLER LAYERXEO ModulesXWC (XEO WEB COMPONENTS)XEO CORE SYSTEMXEO QLJava API. OBJECT MODEL DEFINITIONS. JAVA FILES. XWC VIEWERS. OTHERSPermission LayerBusiness Objects XEO BuilderXEO – DATA LAYER 6/20/20114

5. AgendaXEO Core – XEO ModelsBookAuthorEdition(number)Title (text)Release Date(date)Authors (collection)And business logic?BusinessObjectsXEO Builder6/20/20115

6. AgendaXEO Core – XEO ModelsBookAttributesInstancesRequiredValidFormulaHiddenDisabledDefaultValueEventsEvents on Actions - Save - Create- LoadMethodsEdition(number)Title (text)Release Date(date)Authors (collection)Custom Interfaces, but....6/20/20116

7. AgendaXEO Web ComponentsXEO Viewers – Containers for XEO Web ComponentsMainEditListLookupCustomViewers can be scaffolded from Model definitions6/20/20117

8. AgendaXEO Web Components and Model Integration?How do XEO Models and XEO Web Components integrate? Demo6/20/20118

9. AgendaIn the end?We believe XEO’s approach allows us to...Respond to changeQuickly BootstrapDeliver small incrementsLess like this...Questions?It’s open-sourcewww.xeoframework.orgAnd more like this6/20/20119

10. AgendaiTDS and XEOpedro.rio@itds.ptwww.itds.ptwww.xeoframework.org6/21/201110

11. AgendaXEO Permissions6/20/201111