Exception Handler for Oracle ADF Application

User_BUYLR

Hi Team,

I have implemented the below approach for my application but it's not handling "Nullpointer /Java expetions"

Extending DCErrorHandlerImpl- for model

so I introduced the below approach to handling Java exceptions (Null pointers kind)

https://blogs.oracle.com/adf/post/extending-the-adf-controller-exception-handler

my question is, Do we have simple approach to consolidate all exceptions in single Control (single )

Jdev: 12.1.2.2.0

Timo Hahn

Try to get it from my git https://github.com/tompeez/Old_Sample_Code/raw/main/o23adf-1896561.zip

Timo Hahn

User, tell us your exact JDev version, please!

What do you mean by

...consolidate all exceptions in single Control (single )

Check https://blogs.oracle.com/oraclemagazine/post/catch-me-if-you-can for the full story about error handling in ADF.

Timo

User_BUYLR

Thanks, Timo for your quick response.

Jdev V: 12.2.1.2.0

.consolidate all exceptions in single Control (single ):

My point is, For designing custom exception handlings we need to create custom error handlings for each layer

DCErrorHandlerImpl class for Bindings layer but It won't handle View Layer exceptions. So we need to customize the error handler for ViewLayer like below

Extending the ADF Controller exception handler

https://blogs.oracle.com/adf/post/extending-the-adf-controller-exception-handler

Can't we create a single approach to handle all layers exceptions in the application instead of designing each layer customizations?

Req: I was unable to download the sample application from below URL ( can u help)

https://blogs.oracle.com/oraclemagazine/post/catch-me-if-you-can

Next Steps

 LEARN more about Oracle ADF

DOWNLOAD

 Oracle JDeveloper 11g

 the sample application for this article

Timo Hahn

When you think about this, you'll realize that you have different layers (model, view, controller) on different machines. So it doesn't make sense to use ONE for all as you'll need to break the MVC pattern for this.

The article shows you what you should do to handle the exceptions from the different layers and present them to the user. In the best case, the user should see all errors in the same way, without knowing where they were thrown.

Timo

User_BUYLR

Understood Timo.

BTW When I try to download the sample application from Frank Nimphius  post, getting the below exception

Timo Hahn

Try to get it from my git https://github.com/tompeez/Old_Sample_Code/raw/main/o23adf-1896561.zip