NetworkServerControl prints usage message twice on some errors
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Key: DERBY-5261
URL: https://issues.apache.org/jira/browse/DERBY-5261
Project: Derby
Issue Type: Bug
Components: Network Server
Affects Versions: 10.8.1.2
Reporter: Knut Anders Hatlen
Priority: Minor
If you invoke NetworkServerControl with an invalid command, the usage message
will be printed twice.
$ java -jar derbynet.jar abc
Mon Jun 06 10:14:25 CEST 2011 : Command abc is unknown.
Usage: NetworkServerControl <commands>
Commands:
start [-h <host>] [-p <portnumber>] [-noSecurityManager] [-ssl <sslmode>]
shutdown [-h <host>][-p <portnumber>] [-ssl <sslmode>] [-user <username>]
[-password <password>]
ping [-h <host>][-p <portnumber>] [-ssl <sslmode>]
sysinfo [-h <host>][-p <portnumber>] [-ssl <sslmode>]
runtimeinfo [-h <host>][-p <portnumber>] [-ssl <sslmode>]
logconnections {on|off} [-h <host>][-p <portnumber>] [-ssl <sslmode>]
maxthreads <max>[-h <host>][-p <portnumber>] [-ssl <sslmode>]
timeslice <milliseconds>[-h <host>][-p <portnumber>] [-ssl <sslmode>]
trace {on|off} [-s <session id>][-h <host>][-p <portnumber>] [-ssl <sslmode>]
tracedirectory <traceDirectory>[-h <host>][-p <portnumber>] [-ssl <sslmode>]
Mon Jun 06 10:14:25 CEST 2011 : No command given.
Usage: NetworkServerControl <commands>
Commands:
start [-h <host>] [-p <portnumber>] [-noSecurityManager] [-ssl <sslmode>]
shutdown [-h <host>][-p <portnumber>] [-ssl <sslmode>] [-user <username>]
[-password <password>]
ping [-h <host>][-p <portnumber>] [-ssl <sslmode>]
sysinfo [-h <host>][-p <portnumber>] [-ssl <sslmode>]
runtimeinfo [-h <host>][-p <portnumber>] [-ssl <sslmode>]
logconnections {on|off} [-h <host>][-p <portnumber>] [-ssl <sslmode>]
maxthreads <max>[-h <host>][-p <portnumber>] [-ssl <sslmode>]
timeslice <milliseconds>[-h <host>][-p <portnumber>] [-ssl <sslmode>]
trace {on|off} [-s <session id>][-h <host>][-p <portnumber>] [-ssl <sslmode>]
tracedirectory <traceDirectory>[-h <host>][-p <portnumber>] [-ssl <sslmode>]
Printing it once should be enough.
The same problem is seen if you don't specify a required argument for an
option. For example "java -jar derbynet start -p" (no port number).
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