public SIBusMessage nextLocked ( ) throws SISessionUnavailableException , SISessionDroppedException , SIConnectionUnavailableException , SIConnectionDroppedException , SIResourceException , SIConnectionLostException , SIErrorException { if ( TraceComponent . isAnyTracingEnabled ( ) && tc . isEntryEnabled ( ) ) SibTr . entry ( this , tc , "nextLocked" ) ; JsMessage retMsg = null ; synchronized ( lmeOperationMonitor ) { checkValid ( ) ; // At this point we look at each item in the array up to end of the array for the next // non-null item. This is because some points in the array may be null if they have been // deleted or unlocked. while ( nextIndex != messages . length ) { retMsg = messages [ nextIndex ] ; nextIndex ++ ; if ( retMsg != null ) break ; } } if ( TraceComponent . isAnyTracingEnabled ( ) && tc . isEntryEnabled ( ) ) SibTr . exit ( this , tc , "nextLocked" , retMsg ) ; return retMsg ; }
Returns the next available locked message in the enumeration . A value of null is returned if there is no next message .