ex in Catch(ex) is not recognized

Classic Servoy
1

Hi,

I’m new to the Servoy exception handling, but its known to me in dotNET

So, I’m strugglng with the argument of Catch in the try catch finally block:

On application level scope it is seen ( in the onError event)

But it is unseen in local block, e.g.

try {                                   
        stuff.....		
} 
catch (ex) { 
         .....
        var myfirst_msg = ex.getMessage();
        application.output(myfirst_msg); 
}

There is nothing in ex, why… ?

PS I tried:
var ex = new ServoyException;

in the method but to no result ( i thik this is not the way to go also…)

2

ex should be there just fine, you use that code that i see above?
what goes wrong then? the application.output(myfirst_msg) is hit?
Then ex does exists just fine because else you would get a error on ex.getMessage()

the problem is that you won’t see ex in the debugger, this is a limitation of the rhino debugger, not something that servoy can fix so easily.

3

OK,
is it that?..
Initially, i - indeed- just looked in the Expressions view.

But is remaining problem ex = null

So after a run i get:

TypeError: Cannot find function getMessage.

I thaught i had the anwer by removing my method in: Application.onError() but to no effect. :(
Some other tip for me?

Regards, Jan

4

try this:

application.output(ex.message);

5

Same problem here. Servoy 5.2.11

The application.output(ex.message) shows indeed the error message.
But I need to do something depending on the error code.

Is there some ex.property that returns the error code?
Because ex.getErrorCode() is not recognized.

I need it to compare with ServoyException.NO_PARENT_DELETE_WITH_RELATED_RECORDS

6

There are different kind of exceptions, not all exceptions are ServoyExceptions that do have that getErrorCode()

so for this to work you have to test for that like:

if (ex.getErrorCode && ex.getErrorCode() == ServoyException.NO_PARENT_DELETE_WITH_RELATED_RECORDS) {
 // a servoy exception with that code
}
7

The exception I get is a servoy exception.

When I don’t use try/catch then the errorhandler is called and the errorcode returns ServoyException.NO_PARENT_DELETE_WITH_RELATED_RECORDS

But when using try/catch this errorcode is not returned.

I had to write my own recursive check if a delete will fail or not before doing the deleteRecord()

8

that is because if you catch() you don’t get directly a ServoyException
it is a Javascript/Rhino exception that wrappes around the Servoy Java Exception:

application.output(e.javaException.getCause().getErrorCode() == ServoyException.NO_PARENT_DELETE_WITH_RELATED_RECORDS);