Al,
Do the following:
OPENSEQ FNAME TO OUTFILE ELSE NULL
WEOFSEQ OUTFILE ON ERROR STOPM 'FATAL ERROR: - Cannot write to file ':FNAME
Now, you should be able to perform the writes without a problem. By the way,
the ON ERROR clause is optional.
The WEOFSEQ will either create the file, or write an end of file mark at the
end of an existing file, making the file null.
If you want to keep the data, if the file exists, then add the WEOFSEQ in an
OPENSEQ ELSE condition... but you need to position the pointer to the end of
the file or you will be stepping on existing data.
Tom
RATEX Business Solutions
-----Original Message-----
From: u2-users-boun...@listserver.u2ug.org
[mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Al DeWitt
Sent: Wednesday, September 08, 2010 10:15 PM
To: U2 Users List
Subject: Re: [U2] Sequential Files Question
I GET THE FOLLOWING MESSAGE [FATAL ERROR: - Cannot open file
C:\OUTPUT\APCHECKS1002] and I'm sent to the colon prompt.
Al DeWitt
-----Original Message-----
From: u2-users-boun...@listserver.u2ug.org
[mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Dan McGrath
Sent: Wednesday, September 08, 2010 7:20 PM
To: U2 Users List
Subject: Re: [U2] Sequential Files Question
If you run this code:
OPENSEQ FNAME TO OUTFILE ON ERROR
STOP 'FATAL ERROR: - Cannot open file ':FNAME END THEN
STOP 'FATAL ERROR: - Already exiting file called: ':FNAME END ELSE
CRT "FILE OPEN SUCCEEDED!"
WRITESEQ "Dummy data" ON OUTFILE THEN NULL END
What happens?
-----Original Message-----
From: u2-users-boun...@listserver.u2ug.org
[mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Al DeWitt
Sent: Thursday, September 09, 2010 10:03 AM
To: U2 Users List
Subject: Re: [U2] Sequential Files Question
I forgot to mention that I'm on Windows.
My output path is: C:\OUTPUT\
My file name isAPCHECKS9999 where is a counter that gets incremented
each time the program is run.
FNAME would be C:\OUTPUT\APCHECKS9999 so that my statement would read:
OPENSEQ FNAME TO OUTFILE...
However, since APCHECKS9999 would be unique each time it doesn't exist.
BTW when I try to display OUTFILE it gives me an Unitialized Variable,
zero assumed error.
Al DeWitt
-----Original Message-----
From: u2-users-boun...@listserver.u2ug.org
[mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Dan McGrath
Sent: Wednesday, September 08, 2010 6:29 PM
To: U2 Users List
Subject: Re: [U2] Sequential Files Question
Yes, it will.
Note: It will drop into the 'ELSE' clause if the file didn't exist to
start with.
-----Original Message-----
From: u2-users-boun...@listserver.u2ug.org
[mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Al DeWitt
Sent: Thursday, September 09, 2010 8:55 AM
To: u2-users@listserver.u2ug.org
Subject: [U2] Sequential Files Question
Unidata 7.1.20
I've never dealt with sequential files, but I have a need to output
records to a text file. Each record will be a series of fixed-length
fields. Each file will need to be created at the time of opening. The
destination will be a Windows folder on one of our servers. I will be
using OPENSEQ to open the file. However, since each file needs to be
created at time of opening what do I use to create the file? My reading
of OPENSEQ doesn't indicate that it will create it automatically if it
doesn't exist.
Thanks.
Al DeWitt
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