Is it possible to access task flow parameter in EOImpl.create() method?

Hi,
Is it possible to access task flow parameter in EOImpl.create() method? If yes, please let me know how to access.
FYI..I am having CreateInsert<xxx> activity in the task flow, which I believe calls EOImpl.create() method internally. While creating the entity, I want assign a default value based on task flow parameter.
Thanks

One way to pass task flow parameters to the model is during the task flow initialization. For this purpose you can create a prepare() method in your Application Module and call it from the task flow. By setting this method as the default in your task flow, it will be called each time the task flow starts. You can pass to the prepare() method any task flow parameters you wish as function arguments. In the prepare() method, save the task flow parameter values in EO or VO transient variables. These variables will be then accessible in the create() methods.

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I did a fair bit of digging based on your suggestions and some things I found in your Oracle Fusion Developer's Guide book and I came up with something that works really well. It is fairly elegant but requires code. It would be nice if something like a setPropertyListener could be rolled into the menu model. That would make my solution completely declarative.
Here is my solution:
My task flow requires a the value #{pageFlowScope.type} to be set. My application has a dynamic region that is changed on the fly using a menu model. The region uses a backing bean (mainRegionManagerBean) which is in the viewScope to manage what taskflow is shown in the region. There are multiple menu items in the menu model that point to the same task flow but pass different values to the #{pageFlowScope.type} parameter. So i wired the menu items up to different methods in the mainRegionManagerBean which set the value for me. See the relevant code below.
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In the backing bean there is a primary method that was created by generating a dynamic region link which sets the task flow id and then other methods which call it and set the relevant parameters. (JSFUtils is a helper class i wrote to centralize some common tasks):
public String shipmentTraceMasterTaskflow()
taskFlowId = "/WEB-INF/taskflow/master/shipmentTraceMasterTaskflow.xml#shipmentTraceMasterTaskflow";
JSFUtils.setValue("pageFlowScope.type", "");
return null;
public String shipmentTraceProNumber()
shipmentTraceMasterTaskflow();
JSFUtils.setValue("pageFlowScope.type", "pronumber");
return null;
public String shipmentTraceBOLNumber()
shipmentTraceMasterTaskflow();
JSFUtils.setValue("pageFlowScope.type", "bolnumber");
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<itemNode id="itemNode_BOLNumberTrace" label="BOL Number Trace" action="#{viewScope.mainRegionManagerBean.shipmentTraceBOLNumber}" focusViewId=""/>
On the page:
<af:region value="#{bindings.dynamicRegion1.regionModel}" id="r1"/>
In the pagedef:
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<parameters>
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</parameters>
</taskFlow>
Edited by: Adam Stortz on Nov 22, 2011 11:10 AM

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duplicate: Re: Task flow parameter not available to set method call parameter

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Is the task-flow input parameter class value being ignored by the framework

hi
Although I don't remember where, I think I read or heard about the task-flow input parameter class value that it is "being ignored by the framework".
One example of this could be what is currently in the UI Shell sample application available
at http://www.oracle.com/technetwork/developer-tools/adf/uishellapp-134633.zip
It has in its task-flow in "flows\second.xml" an input parameter configured like
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</task-flow-definition>Notice the missing "t" at the end of the class name "oracle.ui.pattern.dynamicShell.TabContex".
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(see also forum thread "does the UI Shell sample break encapsulation in its task-flows"
at does the UI Shell sample break encapsulation in its task-flows )
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many thanks
Jan Vervecken

fyi
The feedback below was posted in the forum message
at Re: does the UI Shell sample break encapsulation in its task-flows
Richard Wright wrote:
That appears to be a bug for which I am seeking confirmation.There is an enhancement request (i.e., 9377487) submitted over a year ago, that describes this behavior. It is listed as an ER as our documentation (e.g., Fusion Developer's Guide for Oracle ADF, online help ) does not specifically state that Java class for the input parameter definition is checked for type. Further anything using EL is untyped. So the expectation that types are enforced is somewhat puzzling to the development team.
However, there is an acknowledgment within circles of the development organization, that some might come to have this expectation. One trigger might be the definition itself. The other is the existence of a design time audit on the definition. For example, if the class is specified inaccurately (e.g., typo), there is an audit warning to report "not found."
Under consideration are a number of framework proposals to check for type without breaking backward compatibility or adding overhead to the production environment.
In the interim, the following recommendations are given.
Unless this breaks or can break your app in some way, no need exist for change. Nevertheless, if this is a real concern, write a test or consider a java assertion. By default, assertions are disabled at runtime. There is no need to override that default.I have been able to find enhancement request 9377487, "TASK FLOW PARAMETER VALUES NOT VALIDATED ACCORDING TO CLASS", on My Oracle Support. It currently has "Status 15 - To Internal (Oracle) Review" and "Updated 16-Dec-2010".
In the context of service request 3-4185839067 recently bug 12838099, "THE TASK-FLOW INPUT PARAMETER CLASS VALUE BEING IGNORED BY THE FRAMEWORK", has been filed and it currently still has "Status 16 - Bug Screening/Triage".
- about "... the expectation that types are enforced is somewhat puzzling to the development team ..."
Hmm, strange ... so what are people supposed to expect when there is an option to configure a class name for a task-flow input parameter?
regards
Jan

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action="callingPages"
actionListener="#{RTACorrespondanceQry.SignatureActListionar}">
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ADF
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Hi.
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I am using JDeveloper 11.1.2.0.0.
I encountered a problem when tried to apply ADF security to my application.
The way to reproduce the problem:
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(the rest of lines skipped).
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@Lovin_JV_941794
The welcome page is public available since it does not have appropriate PageDef file.
Login page comes not from the welcome page, it comes after attempt to access the test page. So after the login succeeded the test page appears, because redirect to welcome page after successful login is not configured. I do not need to return the welcome page at this moment, I need to go to the test page.
It seems the task flow call stack to be destroyed after redirect to login page.
Edited by: user13307311 on Apr 17, 2013 12:45 AM

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1001446 wrote:
Hi ,
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How to create an entry hub to all task flows

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I think you can do that , as :
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Dynamic participant block in Human task flow

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I am working on human task flow and got stopped on below use case.
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If Flag is Yes,
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Can you pls try this.This should work.
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Thnks
Message was edited by:
soaUser

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Hi
first of all Can you get the pageFlow scope variable in taskflow?which you are passing from jspx page?
if you are able to get the Lov value in Taskflow try refresh taskflow on changing the LOV.
you need to add input parameter type as boolean,change the parameter from false to true when the LOV value changed.
now use refreshifNeeded property in pagedef bindings file

Is it possible to access task flow parameter in EOImpl.create() method?

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