Jdbc dynamic credentials

Question

How does one go about implementing JDBC dynamic credentials as suggested by this article http://otn.oracle.com/products/jdev/howtos/bc4j/howto_dynamic_jdbc.html in UIX instead of JSP? Any pointers?
Thanks!
Ronny

Answer 1

I should preface this with a warning that I'm not all that familiar with what you are trying to do. However, it should be possible to use very similar code to what is shown in the How To document for JSPs. In the JSP example, the code is inline part of the JSP. uiXML doesn't mix code and UI, so this code would therefore be located in a method event handler.
The first thing to do would be to create a uiXML page with form fields for username and password. I would use a messageTextInput for these fields (with the secret attribute set to true for the password field). I would add a "Login" submitButton, and then add a ctrl:event="Login" attribute to the button so that it will fire a UIX Controller "Login" event.
I would add a handler for the "Login" event in the handlers section of the uiXML page, and use a method event handler to call out to Java code. The method event handler has access to the HTTPSession and the submitted username and password, so you should be able to get the HTTPContainer and manipulate the session. The only major difference with the JSP example, would be that the JSP example uses the <jbo:ApplicationModule> tag in a try/catch block to attempt the connection, and you would need to use the regular BC4J Java APIs. If the connection was sucessful, your event hander would return an EventResult for the next paeg in your application, if there was an error you could return an event result for the same page displaying the error (as discussed in the Handling Errors chapter of the UIX Developer's Guide).
Whenever discussing login procedures, it is worth pointing out the TrivialPageFlowEngine in the UIX Controller which is useful in enforcing that the user has gone through your login procedure prior to jumping to any page in the application.
Hope this helps!