How to setWhereClauseParams based upon request parms

Question

How can I setWhereClauseParams on a ViewObject using values passed as request parms in the url when a JSF jsp page is first called?
I tried doing the setWhereClauseParams in the jsp page's backing bean constructor, and the code seems to run fine, but I guess the where clause is getting overridden somewhere later in the processing of the jsf page.

Answer 1

If you're looking for a programmatic solution, I'd recommend checking out example #60 on my blog...
http://radio.weblogs.com/0118231/stories/2004/09/23/notYetDocumentedAdfSampleApplications.html#60
If you want to do this declaratively, there are two approaches:
(1) If you are taking advantage of the new 10.1.3 feature that view objects offer to supported named bind variables, you can use the corresponding, new built-in action called "ExecuteWithParams" instead of the previous "Execute" action to execute the query and set the named bind variables at the same time. By using an "invokeAction" in your executables section of the page definition, with an appropriate "Refresh" and "RefreshCondition" property set, you can have this built-in action trigger when the page is first loaded in a declarative manner.
(2) You can encapsulate the bind variable setting in an application module custom method which accepts as many parameters as you need to pass in from the client to do the job. Then, publish the method on the client interface of the applictaion module. Then create a method action in the bindings section of the page definition to wrap the details of invoking the custom method. Finally, use an invokeAction in the executable section as mentioned above to cause this method action binding to be invoked when you want it to be.
All of these things are covered in depth in the about-to-be released "ADF Developer's Guide for Forms/4GL" developers. We're hoping it will go live this week on OTN as the final edits are done now. If you are in a pinch and need a pre-release copy, send me an email at [email protected] and page in the URL to this forum thread so I remember the context. Thanks.