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| File output with headers in append mode |
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| kash3338 |
 Posted: Thu Apr 02, 2015 7:32 am Post subject: File output with headers in append mode |
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Shaman
Joined: 08 Feb 2009
Posts: 709
Location: Chennai, India
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Hi,
I am writing to a file using FIleoutput node and the mode of writing set as "Write directly to out file (append if file exists)". The file gets picked by a schedule job and everytime the file is picked, a new file is created and records are appended to it.
I need to set a File Header for the output file. how do i do it? It needs to be set only once per file and only when the file is created for first time. How can this be acheived using the file out node? I am running on IIB v9.0, AIX server. |
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| nelson |
| Posted: Thu Apr 02, 2015 9:46 am Post subject: Re: File output with headers in append mode |
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Partisan
Joined: 02 Oct 2012
Posts: 313
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| kash3338 wrote: |
Hi,
I am writing to a file using FIleoutput node and the mode of writing set as "Write directly to out file (append if file exists)". The file gets picked by a schedule job and everytime the file is picked, a new file is created and records are appended to it.
I need to set a File Header for the output file. how do i do it? It needs to be set only once per file and only when the file is created for first time. How can this be acheived using the file out node? I am running on IIB v9.0, AIX server. |
Who creates this new file for the first time? I'm thinking the way to achieve this is to send the header (the first incoming message of FileOutput node).
I'm a little confused... when the file is picked by a job, a new file is created and records are appended to it? if the header already exists, you shouldn't be worry to write a header again.. 
Please correct me if I misunderstood your problem.. |
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| Vitor |
| Posted: Thu Apr 02, 2015 9:55 am Post subject: Re: File output with headers in append mode |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| nelson wrote: |
I'm a little confused... when the file is picked by a job, a new file is created and records are appended to it? if the header already exists, you shouldn't be worry to write a header again..
Please correct me if I misunderstood your problem.. |
If I'm reading this correctly, the file is built up by appended records from inbound MQ messages / web service calls / psychic force. On a schedule, the file with all the appended records to date is picked up and moved / deleted to prevent duplicates in whatever's processing the file. Once this happens, the next record being appended needs a header in the file first.
Is this an accurate description of the requirement?
If it is, I'd have the scheduled job not only pick up the file but create a new one, either by moving and renaming a blank template file with only a header in it or by actually writing it.
_________________
Honesty is the best policy.
Insanity is the best defence. |
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| nelson |
| Posted: Thu Apr 02, 2015 10:10 am Post subject: Re: File output with headers in append mode |
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Partisan
Joined: 02 Oct 2012
Posts: 313
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| Vitor wrote: |
| If it is, I'd have the scheduled job not only pick up the file but create a new one, either by moving and renaming a blank template file with only a header in it or by actually writing it. |
My fault, misunderstood the problem... In fact, if it is a continuous flow and not a batch process, Vitor advice looks pretty simple to implement. |
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