I want to hold my heirarchy... And references.. So i don't want to
change. I am working on a node wrapper.
Scott
On May 25, 2009, at 11:28 AM, Shlok Datye wrote:
I recently came across some nice sample code on how to use
NSTreeController with Core Data. Here it is:
http://espresso-served-here.com/2008/05/13/nstreecontroller-and-core-data-sorted/
However, it takes route 2 on your list; the entities have "children"
and "parent" relationships.
Shlok Datye
Coding Turtle
http://codingturtle.com
On 25.05.2009, at 17:38, Scott Andrew wrote:
I am working on a CoreData project but want some advice on using an
Outline View.
My relationships are setup like so. They don't have a parent/child
entry. The entries more match the read data.
Project
// just a simple group node will say (targets/sources) in
localized languges.
TargetGroup (one to one to TargetGroup)
SourceGroup (one to one to SourceGroup)
TargetGroup
Targets (one to may to targets)
SourceGroup
Sources(one to many to sources).
Sources
Language
Entries (one to many to entries)
Target (one to many to targets)
Tragets
Sources (one to many to sources)
I know i have a few options.
1.) Create a generic NSTreeNode subclass the does the right thing
based on node type and gets the proper children,parent,etc...
2.) Change my model to a generic children/prarent node type.
3.) Subclass NSManagedObject to do the right thing based on type.
4.) Create a protocol that each object must override to give the
proper data.
5.) Use a data source.
I think what makes this tricky is that this isn't just a simple
one to one relationship and is what is throwing me off. I am
leaning towards 1 and 3. I would like to keep this model due to the
fact that it represents the real data. I may also be over thinking
this a bit.. Any advice would be appreciated.
Scott Andrew
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