Mysterious Inverse Attributes

[Denis Crouzet]

Thanks for your lights Uli,
 
I rather understand the purpose of inverse attributes but I am not sure at
all.
I have copied ZBPJOB from BPJOB and ZBPSTEP from BPSTEP.
In ZBPJOB, I have changed the reference of attributes STEPS by ZBPSTEP
(inverse attribute is empty).
In ZBPSTEP, I have changed the reference of attributes JOB by ZBPJOB
(inverse attribute is empty).
 
I tested ZBPJOB. Sure it works and the result is exactly the same (the ABAP
code of the attributes is not changed).
 
What does Inverse Attribut field add? Only infomation : there is a link
between the 2 attributes?
 
Is it easier to explain who was first : husband or wife?
 
Denis
 
-----Original Message-----
From: Ulrich Mende [mailto:wug at mende-edv-beratung.de]
Sent: jeudi 11 avril 2002 9:16
To: SAP-WUG at MITVMA.MIT.EDU
Subject: Re: Mysterious Inverse Attributes
 
 
Hi -
to avoid the question "Who was first - husband or whife ?" here is a
technical example ;-)
 
BOR-Type          : BPJOB (background job)
Attribute         : STEPS of Type BPSTEP, multiline
inverse Attribute : JOB
 
Each of the steps, referred by STEPS has an attribute JOB, that givs the
job again:  jobinstance.steps[n].job = jobinstance
 
BOR-Type          : BPSTEP (step of background job)
Attribute:        : JOB of BOR-Type BPJOB, single value
inverse Attribute : STEPS
 
A step points to the job it belongs to and can refer to all other steps
via the job:  stepinstance.job.steps[n] --> stepinstance_n
 
Best regards  Uli
 
 
 
 
 
 
 
"Roehlen, Peter" <PRoehlen at powercor.com.au> schrieb am 11.04.2002,
04:10:54:
> Denis,
>
> Basically I think it is a way of documenting relationships between
business
> object types.  For example, if you had a one to one relationship between
say
> Husband and Wife, the Wife object would have an attribute called Husband
of
> type Man, the inverse attribute being the attribute Wife of object type
> Husband which is of type Woman.
>
> I've only used it a few times, but I don't know what benefit it gives you.
> (By the way: please forgive my stereotypical and old fashioned example!)
>
>
> Regards
>
> Peter Roehlen
> Powercor Australia Ltd
> 0409 950 263
>
>
>
> -----Original Message-----
>> From: Denis Crouzet [mailto:denis.crouzet at arinso.com]
> Sent: Thursday, 11 April 2002 1:26
> To: SAP-WUG at MITVMA.MIT.EDU
> Subject: Mysterious Inverse Attributes
>
>
> Hello again experts,
>
> What is the purpose of Inverse Attributes?
> Does someone already used them?
> How and why?
>
> Thanks,
>
> Denis
> SAP HR and Workflow Consultant
> Arinso France
> Paris
>
>
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