How to force coredata to rebuild sqlite database model?

Question

In my app I sometimes need to rebuild and repopulate database file. SQLite databse is created and managed by CoreData stack.

What I\'m trying to do is drop the file

Answer 1

You can keep a "clean" copy of your sqlite database as part of the application bundle, then just copy over the version in the documents directory whenever you'd like to refresh the database.

Here's some code from an App that does something similar (although this version will not copy over and existing db):

// Check for the existence of the seed database
// Get the path to the documents directory and append the databaseName
NSString* databasePath = [[self applicationDocumentsDirectory] stringByAppendingPathComponent: kDatabaseName];

NSFileManager* fileManager = [NSFileManager defaultManager];
if ( ![fileManager fileExistsAtPath: databasePath] ) 
{
    NSString* databasePathFromApp = [[[NSBundle mainBundle] resourcePath] 
                                     stringByAppendingPathComponent: kDatabaseName];

    [fileManager copyItemAtPath: databasePathFromApp 
                         toPath: databasePath 
                          error: nil];
}
[fileManager release];