protected void checkValid ( ) throws SISessionUnavailableException { if ( ! _parentConnection . isValid ( ) ) { final SISessionUnavailableException exception = new SISessionUnavailableException ( NLS . getString ( "INVALID_SESSION_CWSIV0200" ) ) ; if ( TRACE . isEventEnabled ( ) ) { SibTr . exception ( this , TRACE , exception ) ; } throw exception ; } }
Checks that the parent connection has not been invalidated by the connection manager .