Hopefully it is useful to you!
This would be used when an exception is thrown in a method that saves an entity
bean, the Hibernate validator is being used, and you are using the Seam
FacesMessages object. It tries to find the Hibernate InvalidStateException
object, which may be wrapped in the "cause" of another exception object. Note:
I did not write this to go down the "cause" stack trace to find the
InvalidStateException. I have not seen that need in my experiments. Notice
the 2 different signatures (different exception classes) for the method.
package com.shockwatch.jsf;
import org.hibernate.validator.InvalidStateException;
import org.hibernate.validator.InvalidValue;
import org.jboss.seam.core.FacesMessages;
public class ValidationUtil {
// add error messages from Hibernate Validator
public static void addInvalids(FacesMessages fMsgs, InvalidStateException ex)
{
for (InvalidValue error : ex.getInvalidValues())
{
fMsgs.add(error.getPropertyName() + " " +
error.getMessage());
}
}
/* Sometimes another exception type is thrown by EJB container, like
EJBTransactionRolledbackException
Attempt to find InvalidStateException and add validation failure if
found,otherwise add exception message
*/
public static void addInvalids(FacesMessages fMsgs, Exception ex)
{
if (ex instanceof InvalidStateException) // just add messages
{
addInvalids(fMsgs, (InvalidStateException)ex);
return;
}
try
{ // try to extract Hibernate Validator exception, cast exception
if not found
InvalidStateException ise =
(InvalidStateException)ex.getCause();
addInvalids(fMsgs, ise);
}
catch (ClassCastException castEx) // not a validation exception
{
fMsgs.add(ex.getLocalizedMessage() + " Caused by: " +
ex.getCause().getLocalizedMessage());
}
}
}
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