Core Data or not
Core Data or not
- Subject: Core Data or not
- From: Trygve Inda <email@hidden>
- Date: Fri, 05 Aug 2016 07:46:03 -0700
- Thread-topic: Core Data or not
I am considering moving an app to Core Data. Currently it manages an array
of InterestingObjects. I use NSArrayControllers and TableViews. Everything
works.
I have two cases:
1. I have one array of all InterestingObjects and I set different predicates
on the array controller to show only those matching the predicate in a
table. (Think of this as an iTunes smart folder)
2. I manually insert some of the InterestingObjects into an array controller
to be shown in a table. (Think of this as an iTunes user-defined folder -
just dragging in random songs)
#1 seems easy to migrate to Core Data as the table will be bound to my
managed object context and I can use predicates to show different subsets.
How can I effectively do #2?
Each InterestingObject has an identifier that is a UUID so I could make a
predicate that just lists all the InterestingObjects I am colleting. Will
that be effective with perhaps hundreds of objects?
Without Core Data it is easy to just go through the array and pick out a
hundred, add them to a different array and display them.
Basically I have a core data store of 5,000 InterestingObjects. I have a
list of 200 UUIDs (remember, each InterestingObject has a UUID) and I need
to list these 200 InterestingObjects in a table.
In some cases I need to combine them, so how is the best way with Core Data
to show a table of:
- all the InterestingObjects where name= "Joe"
- plus all the InterestingObjects with these 200 UUIDs
I hope this is clear.
Somehow this seems easier to do without Core Data.
Thanks.
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