java - Catch EJBTransactionRolledbackException before it is logged to file -


my setup:

i have ejb bean (deployed in ear on jboss 6.4) method calculates values , stores in database. method started in new transaction. looks this:

@transactionattribute(transactionattributetype.requires_new) public void dostuff() {     myobject value = calculatesomevalues();      entitymanager.merge(value);     entitiymanager.flush(); }

by design, possible flush fail due constraintviolationexception. new transaction, exception wrapped in ejbtransactionrolledbackexception , thrown runtimeexception. have set logging ejb exceptions useful find them in whole system. know constraintviolationexception occur , then, catch , rollback before logging system logs error (the constraint violation not seen exception, required database's point of view). @ moment, log file clogged entries one:

error [org.jboss.as.ejb3.invocation] (default-threads - 49) jbas014134: ejb invocation failed on component

how can catch exception in such way logger prevented printing these errors? (note: still want log other ejbtransactionrolledbackexceptions)

i don't have jboss 6 deployed, cannot test whether precise exception types work jboss 6 (i tried on wildfly 8).

a possible solution put in ejb method annotated @aroundinvoke (at least if don't have other interceptors on ejb):

   @aroundinvoke    public object myconstraintviolationinterceptor(invocationcontext ctx) throws exception    {       try {           return ctx.proceed();       }       catch(persistenceexception e) {           if (e.getcause() instanceof org.hibernate.exception.constraintviolationexception) {               //some action taken           }           else {               throw e;           }           return null;       }    }

by way, if constraintviolationexception optimistic locking exception in disguise (that is, thrown because user has modified data in meantime), maybe better report user.


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