Re: to-many relationship fetching
Re: to-many relationship fetching
- Subject: Re: to-many relationship fetching
- From: Chuck Hill <email@hidden>
- Date: Tue, 29 Apr 2003 14:13:18 -0700
- Organization: Global Village Consulting, Inc.
Do you mean that
objectA.relationshipname() == null
or
objectA.relationshipname().length() == 0
The first should be impossible unless you've done something bad in the
code.
The latter indicates that there are no related objects. NOTE: this
does NOT mean that they have not been fetched yet, but that there are
no related rows in the database! This would suggest either a modeling
error or a misunderstanding of the data in your database.
Chuck
Anurag Khare wrote:
Entity B has to-one relationship to Entity A. Entity A has to-many
relationship to Entity B. I fetch "A" and wish to get details(ARRAY)
from "B". Using ObjectA.relationshipname() to get Array but it shows
null...
I do not know how to set "-EOAdaptorDebugEnabled true" in launch
argument. Could you please elaborate...
Thanks
Anurag
From: Art Isbell <email@hidden>
To: email@hidden
Subject: Re: to-many relationship fetching
Date: Tue, 29 Apr 2003 09:17:54 -1000
On Tuesday, April 29, 2003, at 07:37 AM, Anurag Khare wrote:
I am using WO 5.2 and Sybase 12.5.0.2 as database. I am having a
to-many relationship between two tables.
I am assuming that EntityA has a to-many relationship,
EntityA.entityBs, to EntityB. But EntityA and EntityB might be
related many-to-many as well which could change things. Please
provide a little more detail about the relationship that you want to
prefetch.
I have used prefetching option in the EOModel to fetch the to-many
array through the relaionship key but I get null in the array.
Have you verified by setting the launch argument
"-EOAdaptorDebugEnabled true" that EntityA's are being fetched but
that related EntityB's are not being fetched?
Aloha,
Art
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--
Chuck Hill email@hidden
Global Village Consulting Inc. http://www.global-village.net
Progress is the mother of all problems.
- G. K. Chesterton
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