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Here is code to call entry point QtocLstNetIfc in service program
QTOCNETSTS. The entry point takes three parameters -- two strings (passed
by reference) and the error code. The strings are converted from Unicode
to EBCDIC before being sent to the server. When calling programs or
service programs, pay particular attention to lengths. The Toolbox client
passes data to the program call server who dumps the data in one big
buffer. It then passes pointers to that buffer or pulls data out of the
buffer when calling the service program. If a length is off the wrong data
will be passed, but since all data comes out of one big buffer you may not
get a addressing errors (trying to get to memory you don't own). You will
just get bad data.
Are you trying to call an OS/400 service program or one of your own? Some
Toolbox objects are implemented by calling OS/400 service programs via
ServiceProgramCall so I know it can work.
AS400 system = new AS400();
// The first parm is 20 characters, 10 chars of user space followed
by 10 chars of library.
// Create a converter for 20 chars.
AS400Text char20 = new AS400Text(20, system);
// The second parm is the format name (8 chars). Create a
converter.
AS400Text char8 = new AS400Text(8, system);
// Create program parameters
ProgramParameter[] parms = new ProgramParameter[3];
// First parm is qualified user space CHAR(20)
// CHAR(0-9) is the user space name
// CHAR(10-19) is the library name
String qSpace = "DAW DAW ";
// First parm is the library qualified UserSpace
parms[0] = new ProgramParameter(char20.toBytes(qSpace));
parms[0].setParameterType(ProgramParameter.PASS_BY_REFERENCE);
// Second parm is the format
parms[1] = new ProgramParameter(char8.toBytes("NIFC0100"));
parms[1].setParameterType(ProgramParameter.PASS_BY_REFERENCE);
// Last parm is the error code. We pass an array of 0x00s so
messages are returned.
byte[] bytes = new byte[32];
parms[2] = new ProgramParameter(bytes, 32);
parms[2].setParameterType(ProgramParameter.PASS_BY_REFERENCE);
ServiceProgramCall sPGMCall = null;
System.out.println("About to create the program");
sPGMCall = new ServiceProgramCall(system,
"/QSYS.LIB/QTOCNETSTS.SRVPGM",
"QtocLstNetIfc",
ServiceProgramCall.NO_RETURN_VALUE,
parms);
System.out.println(sPGMCall.run());
AS400Message[] ml = sPGMCall.getMessageList();
for (int i=0; i<ml.length; i++)
System.out.println(ml[i].getID() + ": " + ml[i].getText());
David Wall
553-5329
AS/400 Toolbox for Java
"Price, Chris"
<chris_price@nsb.c To: "'java400-l@midrange.com'"
<java400-l@midrange.com>
o.uk> cc:
Sent by: Subject: AS400 Toolbox
problems - ServiceProgramCall
owner-java400-l@mi
drange.com
08/14/2001 05:31
AM
Please respond to
JAVA400-L
Has anyone successfully managed to call a procedure in a service program,
using the ServiceProgramCall class?
I'm having major problems getting this to work:
Passing by reference doesn't work at all - get null pointer errors in the
procedure.
Passing by value works for integers, but Strings get garbled. I thought
this
might be a CCSID problem, but the same code works fine for a ProgramCall.
Does anyone have any working examples using this class, there aren't any
that I can find in the toolbox documentation.
Confused,
Chris.
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