CODEWITHSUNDEEP
iphoneiosobjective-cxmlxml-parsing
Kirtikumar A.
Kirtikumar A.

Reputation: 4204

XML generation and parsing from Core data in iphone

I'm creating a simple iOS application consisting of a few UITableViewControllers. The information displayed in the view controllers will come from a xml file (that I'll include in the project's Resources or direct from dropbox or iCloud). The xml file's contents will be based on user input .

A few notes:

The data is based on the user input means not static. Ideally the app will load the data into "Core Data" from xml file. Each additional run of the app will just pull data from some Core Data source (that I'm not completely familiar w/ yet) instead of re-loading it from the textfile.

right now I am using XMLwriter to generate simple xml file

Please guide me thank you

Upvotes: 3

Views: 607

Answers (1)

Mundi
Mundi

Reputation: 80271

The best pattern here seems to be to use the XML file to "seed" your Core Data database. This only happens the first time. After that you will never again use your XML file but simply update and sync your core data store.

This is far better than generating XML. The problem with XML files (like property lists) is that you have to write the entire file for each little incremental change. If you sync to a store somewhere online, this can take much too much time to be practical.

Assuming you can get a foundation object from the XML file, simply iterate through the object and insert a Core Data one by one. 

for (NSDictionary *dict in xmlArray) {
   Entity *newObject = [NSEntityDescription 
        insertNewObjectForEntityForName:@"Entity"
                 inManagedObjectContext:self.managedObjectContext]; 
   newObject.attribute1 = [dict objectForKey:@"attribute1"];
   newObject.attribute2 = [dict objectForKey:@"attribute2"];
   //  etc...
}
[self.managedObjectContext save:nil];

Upvotes: 2

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