JDev10g and DataBindings.cpx

Question

Hello,
we have several problems with the cpx and the MyXyzPanelUIModel.xml files. In general we appreciate the xml on the client. But in the current state it seems almost unusable.
1. 10g creates "DataBindings.cpx" instead of "<prj_name>.cpx". This prevents us from seperating the client tier into several projects because "DataBindings.cpx" must be unique on the classpath. The Online-Help chapter "About the Client Project Configuration File" says that the cpx name is derived from the project name (like in 9.0.3).
2. JClient Form Wizard generates a code line
mgr.loadCpx("DataBindings.cpx", map);
in the main class. loadCpx parses the cpx and creates a database session for each data control node (application module). Is this really the wanted behavior for a JClient application? Create N sessions even if a special end user only works with one data form (because he has restricted access rights in the applaction).
3. Only the first data form in a JClient project can be executed. Trying to execute a second data form results in a JBO-25003 exception:
(oracle.jbo.NoObjException) JBO-25003:
Object MyXyzView of type View Object not found
Regards
M. Thal

Answer 1

3. Only the first data form in a JClient project can be executed. Trying to execute a second data form results in a JBO-25003 exception:
(oracle.jbo.NoObjException) JBO-25003: Object MyXyzView of type View Object not found
We just used the wizards to perform the following steps:
- create a new workspace
- create a BC4J-project containing some entities, views and at least 2 application modules
use different views as data model
- create an empty project for the client
- create a Swing/JClient for ADF Form
Step2: choose Form Layout "Table"
Step3: create a new Data Model Definition for the first application module
(DataBindings.cpx contains one DataControl node)
- compile and run --> OK
- create another Swing/JClient for ADF Form
Step2: choose Form Layout "Table"
Step3: create a new Data Model Definition for the second application module
(DataBindings.cpx now contains two DataControl nodes)
- compile and run --> JBO-25003 (view not found)
The first generated form still executes ok. The exception occurs in the jbInit method of the panel class:
tableMyXyzView.setModel((TableModel)panelBinding.bindUIControl("MyXyzView", tableMyXyzView));
Using Form Layout "Single columns (label left)" throws an exception, too. Not sure: either the same or JBO-25058 (attribute not found).
It seems that only views and attributes from the first application module can be accessed.
Now the following steps corrupt the cpx:
- create a third Swing/JClient for ADF Form
Step2: choose Form Layout "Single columns (label left)"
Step3: select the first Data Model Definition from the list
Step6: choose another package name, use the same form and panel class names as for the first data form
- compile and run --> OK
But running the first data form results in:
JBO-29000: Unexpected exception caught: java.lang.NullPointerException, msg=null
The cpx "Containee" node of the first data form (using a table) has been replaced by a reference to the new package (using text fields).
The containee id "PanelMyXyzViewUIModel" is not unique in the project scope. The test case requires references for myPackage.PanelMyXyzViewViewUIModel and myOtherPackage.PanelMyXyzViewViewUIModel.
Hope this helps.
Regard
M. Thal