Main Overview en 0 Main.WebHome xwiki:XWiki.benoitf xwiki:XWiki.benoitf xwiki:XWiki.benoitf 1160240078000 1160333012000 1160333012000 1.6 interceptor.png 21114 xwiki:XWiki.benoitf 1160240185000 1.1 persistence.png 28022 xwiki:XWiki.benoitf 1160240210000 1.1 #includeMacros("Macro.PopupRightBox") #popupRightBox("Don't miss the [Demos>Main.Demos] for more information.") 1 :: EasyBeans/EJB3 features 1.1 Interceptors The interceptors are a new features of the EJB 3. The EJB containers were already using this kind of interceptors but now, these interceptors are a standard feature of EJB 3. It means that the developers of EJB can developed interceptors for their beans and it will be supported by all EJB vendors. {image:interceptor.png} As shown by the previous schema, the interceptors are chained. This means that you can check or modify the parameters of a method or change the value returned to the client. 1.1 Persistence The persistence in EJB 3 is simplified (when comparing to CMP) and it is more like JDO or Hibernate patterns. {image:persistence.png} The Entity Beans are now POJO objects (Attributes with getters and setters), inheritance is also supported. The persistence is done through the Entity Manager which is part of the EJB 3 persistence API (JPA). An EJB 3 container can be plugged to different JPA vendors. Some JDO vendors are now providing both JDO and JPA interfaces. <div class="popupRightBox"><span class="title">Don't miss the <span class="wikilink"><a href="/xwiki/bin/view/Main/Demos">Demos</a></span> for more information.</span> </div> <h2 class="heading-1"><span id="H3A3AEasyBeans2FEJB3features">:: EasyBeans/EJB3 features</span></h2> <h3 class="heading-1-1"><span id="HInterceptors">Interceptors</span></h3><p class="paragraph"/>The interceptors are a new features of the EJB 3. The EJB containers were already using this kind of interceptors but now, these interceptors are a standard feature of EJB 3. It means that the developers of EJB can developed interceptors for their beans and it will be supported by all EJB vendors.<p class="paragraph"/><img src="/xwiki/bin/download/Main/Overview/interceptor.png" alt="interceptor.png" /><p class="paragraph"/>As shown by the previous schema, the interceptors are chained. This means that you can check or modify the parameters of a method or change the value returned to the client. <h3 class="heading-1-1"><span id="HPersistence">Persistence</span></h3><p class="paragraph"/>The persistence in EJB 3 is simplified (when comparing to CMP) and it is more like JDO or Hibernate patterns.<p class="paragraph"/><img src="/xwiki/bin/download/Main/Overview/persistence.png" alt="persistence.png" /><p class="paragraph"/>The Entity Beans are now POJO objects (Attributes with getters and setters), inheritance is also supported. The persistence is done through the Entity Manager which is part of the EJB 3 persistence API (JPA).<p class="paragraph"/>An EJB 3 container can be plugged to different JPA vendors. Some JDO vendors are now providing both JDO and JPA interfaces.