session-ios/SignalUtilitiesKit/Database/Migrations/OWSDatabaseMigrationRunner.h

//
//  Copyright (c) 2018 Open Whisper Systems. All rights reserved.
//

NS_ASSUME_NONNULL_BEGIN

typedef void (^OWSDatabaseMigrationCompletion)(void);

@interface OWSDatabaseMigrationRunner : NSObject

/**
 * Run any outstanding version migrations.
 */
- (void)runAllOutstandingWithCompletion:(OWSDatabaseMigrationCompletion)completion;

/**
 * On new installations, no need to migrate anything.
 */
- (void)assumeAllExistingMigrationsRun;

@end

NS_ASSUME_NONNULL_END
Avoid crashing on startup due to database view creation. * Substitute unread view for unseen view until unseen view is ready. * Register as many views as possible async. * Perform blocking, safe migrations before async registration of views. * Add debug settings view for internal app stats. * Show blocking overlay until async registration of database views is complete. * Convert version migrations to use AppVersions. // FREEBIE 8 years ago			`//`
Register all database views asynchronously. 7 years ago			`// Copyright (c) 2018 Open Whisper Systems. All rights reserved.`
Avoid crashing on startup due to database view creation. * Substitute unread view for unseen view until unseen view is ready. * Register as many views as possible async. * Perform blocking, safe migrations before async registration of views. * Add debug settings view for internal app stats. * Show blocking overlay until async registration of database views is complete. * Convert version migrations to use AppVersions. // FREEBIE 8 years ago			`//`
Async migrations framework * nonblocking by default * track success of each migration independently // FREEBIE 9 years ago
			`NS_ASSUME_NONNULL_BEGIN`

Don't mark app as ready until all version migrations are done. 7 years ago			`typedef void (^OWSDatabaseMigrationCompletion)(void);`

Async migrations framework * nonblocking by default * track success of each migration independently // FREEBIE 9 years ago			`@interface OWSDatabaseMigrationRunner : NSObject`

			`/**`
			`* Run any outstanding version migrations.`
			`*/`
Don't mark app as ready until all version migrations are done. 7 years ago			`- (void)runAllOutstandingWithCompletion:(OWSDatabaseMigrationCompletion)completion;`
Async migrations framework * nonblocking by default * track success of each migration independently // FREEBIE 9 years ago
			`/**`
			`* On new installations, no need to migrate anything.`
			`*/`
			`- (void)assumeAllExistingMigrationsRun;`

			`@end`

			`NS_ASSUME_NONNULL_END`