Stuck with problems and no help

Question

hi,
We are stuck with the following set of problems. Repeated entries to this forum have not fetced any response. If anybody can help us on any of these issues, please reply -
1. We are not able to define any custom validator. We made our own validator that extends CompareValidor, but when we try to apply this rule to an attribute in the validation tab, we get the error - "no properties defined". Do i need to do something else besides creating a new class that extends CompareValidator and then writing my own code in the vlaidate method.
2. While deploying our jspApplication on java web server, we are getting the message "error - null". The details are as mentioned in the Topic 'can anyone help!!!' that has been posted by Prabhdeep ().
3. I have two tables, Customer and address. There is no FK between them (there cannot be because address is shared between many entities). In the address, i have 2 fields, BpType and BpId. BpType will contain 'C' to identity that this address is for a customer and id will have the customer id. In jdev 3.1, i have created entity and view objects for the 2 tables. also, i have made a view link. i need to put the condition Address.bpid = customer.customeid and address.bptype = 'c'. but it is not letting me put the second part of the condition. the chk on id works fine. as soon as i add a chk on type and test the application module, then while insertion of address i get the following error - "set method for BpType cannot be resolved".
4. I have made a jsp appl based on bc4j. now, i need to put a check on any entity in such a manner that if the check fails, my jsp should ask the user that an exception is occuring and does he want to save even with the exceptional data. if he says yes, i want that the same entity should now save the data without giving an exception. How do i achieve this interaction between my entity and my jsp.
Thanks a lot for any help,
Aparna.

Answer 1

I will answer Question #3:
I'm not sure if I understand exactly what is
happening. At first I thought you meant that you couldn't even add the second part of the association clause. But, later it sounds like you were able to add the second part of the clause (namely "address.bptype =
'c'") and that you are experiencing some runtime error.
Assuming the latter (that it is a RT problem), I take it this
"...cannot be resolved" error is the error with code 27020.
Under normal error conditions, you shouldn't get this error. Something "unusual" (or unforeseen by us) is happening if you are getting this error. Anyway, if you wrote your own client code, you should wrap a try/catch block around it, pick out the detail exception, and see what's going
on. See the example code below:
try
... make call that causes the exception ...
catch(oracle.jbo.AttrSetValException ex)
// Print stack trace for the outer ex
ex.printStackTrace();
// Get the inner exception
Object[] details = ex.getDetails();
if (details.length > 0)
Exception innerEx = (Exception) details[0];
// Now, print the inner exception's
// stack.
innerEx.printStackTrace();
This will help shed some light on the exception and the cause of it.
John - JDeveloper Team