Release 10.1A: OpenEdge Development:
Java Open Clients

Exception descriptions

Table 8–1 shows the general 4GL exception classes, in alphabetical order.

Table 8–1: General 4GL exceptions for Java proxies

Exception class	Description
BadURLException	Invalid URL format in connection parameter.
BusySessionException	Busy servicing another request.
ConnectException	Error connecting to AppServer.
ConnectFailedException	Failed AppServer connection attempt. The message contains the specified reason for the failure.
HostUnknownException	Invalid NameServer host specified in the URL.
InvalidNameServerPortException	Invalid NameServer port specified in the URL.
MsgVersionInvalidException	Incorrect version for message received from NameServer.
NameServerCommunicationsException	NameServer communications error. The message contains the specified reason for the failure.
NameServerInterruptException	NameServer communications broken. Either no response was received from the NameServer or the thread was interrupted before the response was received.
NameServerMessageFormatException	Invalid format for message received from NameServer.
NoSuchAppServiceException	Application Service specified in URL unknown to NameServer.
Open4GLException	The root exception for all Open Client errors. Used for miscellaneous client-side errors.
OutputSetException	Output ResultSet error, for example, trying to get a column value out of column order or trying to make an illegal type conversion.
RunTime4GLErrorException	Progress 4GL ERROR condition.
RunTime4GLException	Progress 4GL run-time errors.
RunTime4GLQuitException	Progress 4GL QUIT condition.
RunTime4GLStopException	Progress 4GL STOP condition.
SystemErrorException	An unexpected error that indicates a Progress bug or an unusual environmental problem (such as running out of disk space).