On Nov 10, 2008, at 5:15 PM, George wrote:
I have used the ‘reverse engineer’ option in the Entity-Modeller,
that has created an Entity based on my database view, and set its
property to read-only [which is what I wanted].
When I verify the model, I get an error saying View[etc] must have a
primary key defined, so I guess I will modify my view and create a
‘fictional’ primary key attribute...
I don’t know it feels like I am not on the right track having to
create a primary key in my database view.
That sounds right to me. If you are creating EOs from these, EOF
needs to have some piece of unique data that differentiates one object
from another.
Chuck
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
] On Behalf OfGeorge
Sent: Tuesday, 11 November 2008 1:22 p.m.
To: [email protected]
Subject: WebObjects binding to MYSQL Views
I have some reporting requirements that are experiencing performance/
load issues, when aggregating data using EO objects and transversing
all their relationships. To solve this I have created a MYSQL view
which ‘flattens’ the data structure and executes very quickly, [and
should go some way to fixing the performance issues].
I am struggling to figure out how to create and bind a ‘read-only’
entity in the eclipse Entity-Modeller perspective, to my database
VIEW. Is this possible [and where do I find the appropriate
documentation], OR do I have to use a raw rows query on the VIEW
directly? From a maintenance perspective I would rather use
Entities than raw row queries [that are buried in the code].
I use eclipse 3.3.2 running Wolips, using the WebObjects Framework
(non-wonder) 5.3.
Regards
George Wiles | Software Development
TXT2GET | P +64 4 384 1438 | M +64 27 2758 143
Level 5, 75 Ghuznee Street, Wellington, New Zealand
[EMAIL PROTECTED]| www.txt2get.co.nz
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Chuck Hill Senior Consultant / VP Development
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