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Saturday 27 April 2013

Auto dismiss popup component with dialog- Oracle ADF

af:popup is container component for noteWindow, dialog, panelWinow, contextMenus, when we use popup with af:noteWindow, there is property autoDismissalTimeout is responsible for closing poup after some specific time.
But if we are using af:dialog in af:popup , how to close popup in this situation ?

Steps to do-

  • Create a fragment in bounded taskFlow and drag a button on which we have to open popup.
  • Drag a popup in page and showPopupBehavior inside button, pass id of popup and set trigger type to action to open poup on button click
af:popup in Oracle ADF
  •  Now drag a af:poll  component inside af:dialog
poll component delivers poll event to server at  fixed intervals, so we can use this property to fulfil our requirement .
  
Drop poll component inside popup

  • Select poll component in structure window and go to propertyInspector ,create poll listener  in managed bean and set Interval and Timeout to 4000 & 4001 (Timeout slightly greater than Interval time)-It means poll event delivers to server after 4000 ms or 4second




Create a poll listener in managed bean to deliver poll event at fixed interval

  • Now bind popup component to your managed bean, inorder to control poup properties
Create Component Binding for popup in managed bean
  • Close poup in pollListener(), means when after 4sec when poll event invoke server, it will close popup dialog automatically.

Sample ADF Application- Download

Thursday 25 April 2013

Memory Scope For ADF Managed Beans-As per Fusion Developer guide

Scope of managed bean is a very important aspect while developing applications, so it is necessary to clearly understand memory scope of managed bean-
As per Fusion Developer's Guide for Oracle Application Development Framework 11g Release 1 (11.1.1)-

Application Scope-

The application scope lasts until the application stops. Values that you store in a managed bean with this scope are available to every session and every request that uses the application.
Avoid using this scope in a task flow because it persists beyond the life span of the task flow.

Session Scope-

The session scope begins when a user first accesses a page in the application and ends when the user's session times out due to inactivity, or when the application invalidates the session.
Use this scope only for information that is relevant to the whole session, such as user or context information. Avoid using it to pass values from one task flow to another. Instead, use parameters to pass values between task flows. Using parameters gives your task flow a clear contract with other task flows that call it or are called by it. Another reason to avoid use of session scope is because it may persist beyond the life span of the task flow.

Pageflow Scope-




Choose this scope if you want the managed bean to be accessible across the activities within a task flow. A managed bean that has a pageFlow scope shares state with pages from the task flow that access it. A managed bean that has a pageFlow scope exists for the life span of the task flow.If another task flow's page references the managed bean, the managed bean creates a separate instance of this object and adds it to the pageFlow scope of its task flow.

View Scope-

Use this scope for managed bean objects that are needed only within the current view activity and not across view activities. It defines scope for each view port that ADF Controller manages, for example, a root browser window or an ADF region.
The life span of this scope begins and ends when the current viewId of a view port changes. If you specify view, the application retains managed bean objects used on a page as long as the user continues to interact with the page. These objects are automatically released when the user leaves the page.

Request Scope-

Use request scope when the managed bean does not need to persist longer than the current request.

Backing Bean Scope-

A backing bean is a convention to describe a managed bean that stores accessors for UI components and event handling code on a JSF page. It exists for the duration of a request and should not be used to maintain state.
Use this scope if it is possible that your task flow appears in two ADF regions on the same JSF page and you want to isolate each instance of ADF region.

Tuesday 23 April 2013

ADFC-00024-oracle.adf.controller.ControllerException:: No ExternalContext could be found.

 ADFC-00024- No ExternalContext could be found.
this is the exception, i have faced while working on my new ADF application and due to this exception application crashed(Internal Server Error-500)
After lot of googling and searching on OTN, i found a solution for this exception- but really don't understand that how it works-
log of ADFC-00024 problem-



 oracle.adf.controller.ControllerException: ADFC-00024: No ExternalContext could be found.  
      at oracle.adfinternal.controller.util.JsfInterfaceImpl.getExternalContext(JsfInterfaceImpl.java:394)  
      at oracle.adfinternal.controller.util.JsfInterfaceImpl.getRequestMap(JsfInterfaceImpl.java:143)  
      at oracle.adfinternal.controller.state.AdfcContext.getCurrentInstance(AdfcContext.java:219)  
      at oracle.adfinternal.controller.ControllerContextImpl.getViewPortByClientId(ControllerContextImpl.java:121)  
      at oracle.adf.controller.internal.binding.DCTaskFlowBinding.getGuardingPermission(DCTaskFlowBinding.java:204)  
      at oracle.adf.model.binding.DCBindingContainer.getGuardingPermission(DCBindingContainer.java:3849)  
      at oracle.adf.model.binding.DCBindingContainer.internalIsViewable(DCBindingContainer.java:3855)  
      at oracle.adf.model.binding.DCBindingContainer.isViewable(DCBindingContainer.java:3826)  
      at oracle.adf.model.binding.DCBindingContainer.resetSuspendedExecutables(DCBindingContainer.java:3490)  
      at oracle.adf.model.binding.DCBindingContainer.resetSuspendedExecutables(DCBindingContainer.java:3492)  
      at oracle.adf.model.binding.DCBindingContainer.internalRefreshControl(DCBindingContainer.java:3365)  
      at oracle.adf.model.binding.DCBindingContainer.refresh(DCBindingContainer.java:2911)  
      at oracle.adf.controller.v2.lifecycle.PageLifecycleImpl.prepareModel(PageLifecycleImpl.java:115)  
      at oracle.adf.controller.v2.lifecycle.Lifecycle$2.execute(Lifecycle.java:149)  
      at oracle.adfinternal.controller.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:197)  
      at oracle.adfinternal.controller.faces.lifecycle.ADFPhaseListener.access$400(ADFPhaseListener.java:23)  
      at oracle.adfinternal.controller.faces.lifecycle.ADFPhaseListener$PhaseInvokerImpl.startPageLifecycle(ADFPhaseListener.java:238)  
      at oracle.adfinternal.controller.faces.lifecycle.ADFPhaseListener$1.after(ADFPhaseListener.java:274)  
      at oracle.adfinternal.controller.faces.lifecycle.ADFPhaseListener.afterPhase(ADFPhaseListener.java:75)  
      at oracle.adfinternal.controller.faces.lifecycle.ADFLifecyclePhaseListener.afterPhase(ADFLifecyclePhaseListener.java:53)  
      at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._executePhase(LifecycleImpl.java:439)  
      at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:204)  
      at javax.faces.webapp.FacesServlet.service(FacesServlet.java:312)  
      at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)  
      at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)  
      at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)  
      at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)  
      at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)  
      at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:173)  
      at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)  
      at oracle.adfinternal.view.faces.webapp.rich.RegistrationFilter.doFilter(RegistrationFilter.java:122)  
      at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:468)  
      at oracle.adfinternal.view.faces.activedata.AdsFilter.doFilter(AdsFilter.java:60)  
      at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:468)  
      at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:293)  
      at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:199)  
      at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)  
      at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)  
      at oracle.adf.library.webapp.LibraryFilter.doFilter(LibraryFilter.java:180)  
      at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)  
      at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:111)  
      at java.security.AccessController.doPrivileged(Native Method)  
      at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:313)  
      at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:413)  
      at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:94)  
      at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:161)  
      at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71)  
      at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)  
      at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:136)  
      at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)  
      at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)  
      at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)  
      at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3715)  
      at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3681)  
      at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)  
      at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)  
      at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2277)  
      at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2183)  
      at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1454)  
      at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)  
      at weblogic.work.ExecuteThread.run(ExecuteThread.java:178)  

In my case this was due to Application Module configuration, in adf application we have two configuration .
  1. AMLocal
  2. AMShared
For local configuration ,in Pooling and Scalability there is Maximum Pool Size is 4096 but for shared it is only 1
i am not getting why this is so, then i have set Maximum Pool Size for shared configuration to 4096 and it is working-