Problem reentering task flow in dynamic region

Hi All,
I have problem with reentering task flow in dynamic region.
JDeveloper/ADF 11.1.2.3.0
Use Case:
Application contains bussines modules(implemented as bounded task flows) displayed in dynamic region.
In some modules, default activity is Method Call activity which performs some validations(input parameters, state of records in db, etc.)
and if some conditions are not satisfied, shows message to the user and exits module (navigates to Task Flow Return activity).
Problem:
If user tries to start the same module again, nothing happens(message is not shown).
If user choose some other module and after that start first module, message is shown(so I suppose this means that task flow was correctly exited first time but dynamic region state was not refreshed).
Current implementation info:
Dynamic region has attached regionNavigationListener which resets taskFlowId variable in dynamic region bean if regionNavigationEvent.getNewViewId() == null but this listener is not called if Method Call activity directly navigates to Task Flow Return activity.
(if user navigates to Task Flow Return activity from button on some page, this works as expected)
Also, I tried to reset taskFlowId variable from task flow finalizer and to programatically refresh region binding, but this still doesn't work.
So, am I missing some point about refreshing dynamic region or this is bug in ADF?
Thanks,
Dario

I don't have any popup.
There is only page which contains dynamic region.
This dynamic region can be empty or can contain one of business modules(bounded task flows) which are invoked from menu.
In some cases business module must exit(by invoking task flow return activity) immediately after invocation(because some business validations fail).
In this case, module will show message to the user.
Problem is that if user call the same module again, nothing happens(message is not shown) because regionNavigationListener(which only purpose is to reset taskFlowId variable when business module exits) is not triggered when Method Call activity(which is default activity in BTF) navigates to Task Flow Return activity.
Also, I tried to use Router activity instead Method Call, but problem still exists(regionNavigationListener is not triggered).
Obviously, regionNavigationListener is called only if navigating from page(or fragment) and this is probably a bug in ADF so I opened SR.
Edited by: kdario on Oct 27, 2012 5:04 AM

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I have a dynamic region and two task flows. I have action listeners that swap the task flows into the dynamic regions. When these action listeners are tied to buttons, everything works as expected, but if i attach them to menuitems on a menubar, despite the fact the the listener is executed (based on log file debugging), the task flow in the region does not change.
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Edited by: fakintoy on Apr 22, 2009 3:45 PM
Edited by: fakintoy on Apr 22, 2009 3:46 PM
Edited by: fakintoy on Apr 22, 2009 4:06 PM

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I have a home page with a dynamic region and three links and I am working with page fragments. The initial bounded task flow is "btfInicio".
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public class AdministradorActividades extends DataControlBean {
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<af:decorativeBox id="db4" theme="medium"
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I have tried this inside a fragment from my bounded task flow "btfdatosClinicos" where I have a button , but doesn't work. The home page is not refreshed:
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Hi Miguel,
I think you are complicating the requirement without needing. Why would you put the back button inside your other taskflows? This would be useful just if you are calling those from another bounded taskflows.
Look what you can do;
You can create your links for dynamic regions. Cool. But in your decorative box, in the top facet, you can drag a drop the btfinicion and display it as a link (yes, this will be your back button). and that's it. You don't need to mess with partial triggers or refrescar regiones methods.
Let me know if this doesn't impact your requirement.
By the way, en que pais trabajas?
Saludos

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xmlns:h="http://java.sun.com/jsf/html"
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frank <dot> nimphius <at> oracle <dot> com
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Thanks

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>
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Thanks

Error while calling DYnamic shell task flow from unbounded login activity

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MY problem-Hi ,
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Truncated. see log file for complete stacktrace
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Truncated. see log file for complete stacktrace
ANy idea about this
Edited by: Shubhangi m on May 27, 2010 5:31 AM

This question was answered in: Oracle UI Shell Functional Pattern
Edited by: Richard Wright on Jun 15, 2010 8:52 AM

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You can have more then one jdk installed on your pc.
You can use in jdk which comes with the installation package,
Timo

How to create ADF region without Task Flow

I want to divide my page into different regions, but I don't want to have any bounded task flow under each region. I want to include Page Fragment inside the Region.
I find the example of creating Region using some page flow, would you please help me, how to create Region that contains only page fragment, actually the problem I am facing, I don't know what I will provide in value attribute in Region tag, that is expecting some Region Model.

Hello, RajeshBiswas.
A solution could be to generate 'MultiTaskFlow' for indeterminate number of regions or multiple regions on the same page.
It would be necessary to create a single file to define all participating 'TaskFlows' on page:
1. Select 'new -> ADF Task Flow (JSF/Facelets)'
2. May include all 'jsff' files as:
<task-flow-definition id="genericTaskFlow1">
    <default-activity>case1</default-activity>
    <view id="case1">
      <page>/pages/case1.jsff</page>
    </view>
    <use-page-fragments/>
</task-flow-definition>
<task-flow-definition id="genericTaskFlow2">
    <default-activity>case2</default-activity>
    <view id="case2">
      <page>/pages/case2.jsff</page>
    </view>
    <use-page-fragments/>
</task-flow-definition>
It should create a Managed Bean to implement the List of Task Flow Bindings:
1. Create a new Class with de following code:
    private List<TaskFlowBindingAttributes> mTaskFlowBindingAttrs = new ArrayList<TaskFlowBindingAttributes>();
    public MultiRegionBean()
        TaskFlowBindingAttributes tfAttr = new TaskFlowBindingAttributes();
        tfAttr.setId("region1");
        tfAttr.setTaskFlowId(new TaskFlowId("/WEB-INF/.../ADFTaskFlow.xml", "genericTaskFlow1"));
        mTaskFlowBindingAttrs.add(tfAttr);
        tfAttr = new TaskFlowBindingAttributes();
        tfAttr.setId("region2");
        tfAttr.setTaskFlowId(new TaskFlowId("/WEB-INF/.../ADFTaskFlow.xml", "genericTaskFlow2"));
        mTaskFlowBindingAttrs.add(tfAttr);
    public List<TaskFlowBindingAttributes> getTaskFlowList()
        return mTaskFlowBindingAttrs;
2. Define this new class into the 'adf-config.xml' file as Managed Bean with 'pageFlow' scope.
<managed-bean id="__1">
    <managed-bean-name>managedBeanName</managed-bean-name>
    <managed-bean-class>className</managed-bean-class>
    <managed-bean-scope>pageFlow</managed-bean-scope>
</managed-bean>
At the page definition, add a MultiTaskFlow inside <executables> tag:
    <multiTaskFlow id="multiTaskFlow1" taskFlowList="#{pageFlowScope.multiRegionBean.taskFlowList}"
On the page, insert regions in the desired locations. For example:
    <af:group id="g2">
        <af:panelAccordion id="pa1" inlineStyle="width:50%; height:400px;">
                <af:showDetailItem text="showDetailItem 1" id="sdi1">
                <af:region id="r1" value="#{bindings.multiTaskFlow1.taskFlowBindingList[0].regionModel}" >
                </af:region>
                </af:showDetailItem>
        </af:panelAccordion>
        <af:panelAccordion id="pa2" inlineStyle="width:50%;">
                <af:showDetailItem text="showDetailItem 1" id="sdi2">
                <af:region id="r2" value="#{bindings.multiTaskFlow1.taskFlowBindingList[1].regionModel}" >
                </af:region>
                </af:showDetailItem>
        </af:panelAccordion>
    </af:group>
Reference: 21.10 Configuring a Page To Render an Unknown Number of Regions

Adding ADF task flow to page as region fails on first request

Using JDeveloper 11.1.1.1.0, I've created a simple task flow that executes a method call (to set some bind variables and issue a SQL query), then forwards to a jsff page. I've then added a region to another page and dragged this task flow onto my region.
When I run the page, I see the following in the log:
<24-Jul-2009 14:22:29 o'clock BST> <Error> <HTTP> <BEA-101020> <[ServletContext@19304275[app:pipeline module:pipeline path:/pipeline spec-version:2.5]] Servlet failed with Exception
java.lang.NullPointerException
     at oracle.adfinternal.view.faces.renderkit.rich.FormRenderer.encodeAll(FormRenderer.java:234)
     at oracle.adf.view.rich.render.RichRenderer.encodeAll(RichRenderer.java:1187)
     at org.apache.myfaces.trinidad.render.CoreRenderer.encodeEnd(CoreRenderer.java:335)
     at org.apache.myfaces.trinidad.component.UIXComponentBase.encodeEnd(UIXComponentBase.java:751)
     at org.apache.myfaces.trinidad.render.CoreRenderer.encodeChild(CoreRenderer.java:415)
     Truncated. see log file for complete stacktraceAnd the Page Loading animation continues indefinitely. If I make a second request to the same page, the same NullPointerException appears in the log but the page loads successfully. It seems that the first request from any new session doesn't complete, but subsequent requests do.
Can anyone give me any hints about what might cause the oracle.adfinternal.view.faces.renderkit.rich.FormRenderer to throw a NullPointerException at line 234?

Hi Branislav.
Since I don't have the source code for oracle.adf.* and oracle.adfinternal.*, it's very difficult to do any meaningful debugging. Debugging the code that I do have access to (apache packages), appears to show that the oracle rendering class fails when it gets to closing my af:form tag. I've removed the af:form and the page is now working correctly.
At some point I'm going to have to reinstate this form though :-\

Problem reentering task flow in dynamic region

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