How do I drag and drop an action onto a task flow?

Question

In How to pass View Object bind variable from ADF page John states that
You should also consider dragging-and-dropping the executeWithParams operation on your task flow and wiring it to occur before your page instead of putting it in the page definition of the page itself - this way it is more clear what is happening, and is the recommended approach for 11g apps. When you drag-and-drop the operation, you can use the dialog to bind the parameter to your page-flow-scoped variable by supplying the proper EL there.
How can I drag and drop the executeWithParams method onto a task flow. I am using 11.1.1.5.0 on LINUX?
I'm presuming I a need a method action in my page flow.
I have the following action defined in my page def file:
<action IterBinding="localizedCustomerHierarchyViewIterator"
id="executeQueryWithParamsForLocalizedCustomerHierarchyView"
InstanceName="BusinessRulesAMDataControl.LocalizedCustomerHierarchyView"
DataControl="BusinessRulesAMDataControl" RequiresUpdateModel="true"
Action="executeWithParams">
<NamedData NDName="RootEntityId"
NDValue="#{pageFlowScope.recommendationRule.customerEntityId"
NDType="java.lang.Long" NDOption="3"/>
<NamedData NDName="Language"
NDValue="#{pageFlowScope.recommendationRule.language}"
NDType="java.lang.String" NDOption="3"/>
</action>

Answer 1

In summary, it appears you need the following artifacts in order to initialize a view object from parameters before rendering a .jsff view that relies on that view
1) a method-call in task flow.xml file:
<method-call id="executeWithParamsLocalizedCustomerHierarchyView">
<method id="__5">#{bindings.executeWithParamsLocalizedCustomerHierarchyView.execute}</method>
<outcome id="__12">
<fixed-outcome id="__9">initializedLocalizedCustomerHierarchy</fixed-outcome>
</outcome>
</method-call>
2) a control flow rule in the task flow .xml file whose source is (1) and whose destination is the view for which you want to intiialize a view object that supports an iterator that is bound to a list, tree, etc.
3) an entry for the execute action in the databindings.cpx file
<page path="/WEB-INF/[email protected]calizedCustomerHierarchyView"
usageId="oracle_apps_br_view_RecommendationRulePFPageDef"/>
4) the page def must be defined in the databindings.cpx file
5) the page def needs to define action and iterator and list (or otherwise) that is used in UI.
<iterator id="localizedCustomerHierarchyViewIterator"
Binds="LocalizedCustomerHierarchyView"
DataControl="BusinessRulesAMDataControl" RangeSize="25" Refresh="never">
<sortCriteria>
<sort attribute="Level" ascending="true"/>
</sortCriteria>
</iterator>
<action IterBinding="localizedCustomerHierarchyViewIterator"
id="executeWithParamsLocalizedCustomerHierarchyView"
InstanceName="BusinessRulesAMDataControl.LocalizedCustomerHierarchyView"
DataControl="BusinessRulesAMDataControl" RequiresUpdateModel="true"
Action="executeWithParams">
<NamedData NDName="RootEntityId"
NDValue="#{pageFlowScope.recommendationRule.customerEntityId}"
NDType="java.lang.Long"/>
<NamedData NDName="Language"
NDValue="#{pageFlowScope.recommendationRule.language}"
NDType="java.lang.String"/>
</action>
<list ListOperMode="navigation"
IterBinding="localizedCustomerHierarchyViewIterator"
id="customerLocalizedEntityHierarchyList">
<AttrNames>
<Item Value="EntityName"/>
</AttrNames>
</list>
6) a backing bean that provides the functions to initialize the parameters for execution
The easiest way to get most of this is to drag the ExecuteWithParams from within the view in the datacontrols panel right onto the task flow diagram. The downside is that you are left with some pretty poorly named artifacts...
Did I miss anything?
-Klaus
Edited by: klaus gross on Sep 29, 2011 1:00 PM