URL:
<http://savannah.gnu.org/bugs/?22565>
Summary: EOKeyValueCoding: Support modern Cocoa KVC
semantics for NSArray aggregate functions
Project: GNUstep
Submitted by: tmcintos
Submitted on: Wednesday 03/12/2008 at 06:22
Category: gdl2
Severity: 3 - Normal
Item Group: Change Request
Status: None
Privacy: Public
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
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Details:
The Cocoa KVC semantics for NSArray aggregate functions (e.g. @sum) differ
from the traditional semantics implemented in the EOControl framework when
there is a key path following the aggregating operator instead of a simple
key.
For example: [EMAIL PROTECTED]@count
With Cocoa's -[NSArray valueForKeyPath:] behavior, this would invoke [object
valueForKeyPath: @"[EMAIL PROTECTED]"] on each object in the display group,
then return the sum of the counts.
In order to ease porting of WebObjects 5 applications to GSWeb/GDL2, it is
desirable to support this behavior, if possible.
Though not suitable as a final implementation, the attached patch file
illustrates the desired behavior. Note that this patch also removes the
handling of "special keys" in NSDictionary (e.g. @"allKeys" vs. Cocoa's
@"@allKeys" (also supported in -base)).
Reference:
http://lists.gnu.org/archive/html/gnustep-dev/2008-03/msg00093.html
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File Attachments:
-------------------------------------------------------
Date: Wednesday 03/12/2008 at 06:22 Name: EOKeyValueCoding.m.diff Size: 3kB
By: tmcintos
<http://savannah.gnu.org/bugs/download.php?file_id=15245>
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