I'm writing an application that reads in a text file containing a
number of individual messages. The messages are delimited by the pipe
"|" character, and I'm trying to index the data inbetween the
delimiters so that it can be searchable and reportable. I'm using
Core Data for this. My managed object model is something like this:
Entity: File
- has a 1 to many relationship with the Message entity.
Entity: Message
- has a 1 to many relationship with the Field entity.
Entity: Field
- has a "value" property of type String.
I've written a method that reads in the text from a file, parses out
the individual messages, and then within each message, parses out each
field - all the while inserting this information into the managed
object context. My method is pretty fast. I can index a file
containing 162 messages in about 2.5 seconds. This performance is
acceptable for my needs.
Now I'm trying to integrate an NSCollectionView into my application.
Each view in the NSCollectionView contains a NSTextView containing the
text of each message in a selected file. The NSCollectionView's
"Content" binding is bound to an Array Controller that holds every
open file. So when the user selects a new open file, the
NSCollectionView updates accordingly by displaying that file's
messages. This all works fine, but the problem is that with the
NSCollectionView bound to the Array Controller, the performance is
horrible! My CPU usage is at 100% and my application's memory usage
runs off the chart! I can't seem to figure out what the problem is
here. I know the problem isn't within my function that performs the
indexing b/c this works just fine when the NSCollectionView is not
hooked up.
Anybody have any clue what I'm doing wrong here? The NSCollectionView
is a new class and unfortunately there isn't a lot of documentation on
it just yet. Thanks in advance!
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