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			106 lines
		
	
	
		
			2.5 KiB
		
	
	
	
		
			Objective-C
		
	
			
		
		
	
	
			106 lines
		
	
	
		
			2.5 KiB
		
	
	
	
		
			Objective-C
		
	
| //
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| //  Copyright (c) 2018 Open Whisper Systems. All rights reserved.
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| //
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| 
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| #import "OWSDatabaseMigration.h"
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| #import <SignalServiceKit/OWSPrimaryStorage.h>
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| 
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| NS_ASSUME_NONNULL_BEGIN
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| 
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| @implementation OWSDatabaseMigration
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| 
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| - (void)saveWithTransaction:(YapDatabaseReadWriteTransaction *)transaction
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| {
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|     DDLogInfo(@"%@ marking migration as complete.", self.logTag);
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| 
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|     [super saveWithTransaction:transaction];
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| }
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| 
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| - (instancetype)initWithPrimaryStorage:(OWSPrimaryStorage *)primaryStorage
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| {
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|     self = [super initWithUniqueId:[self.class migrationId]];
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|     if (!self) {
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|         return self;
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|     }
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| 
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|     _primaryStorage = primaryStorage;
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| 
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|     return self;
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| }
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| 
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| + (MTLPropertyStorage)storageBehaviorForPropertyWithKey:(NSString *)propertyKey
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| {
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|     if ([propertyKey isEqualToString:@"primaryStorage"]) {
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|         return MTLPropertyStorageNone;
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|     } else {
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|         return [super storageBehaviorForPropertyWithKey:propertyKey];
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|     }
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| }
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| 
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| + (NSString *)migrationId
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| {
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|     OWSRaiseException(NSInternalInconsistencyException, @"Must override %@ in subclass", NSStringFromSelector(_cmd));
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| }
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| 
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| + (NSString *)collection
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| {
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|     // We want all subclasses in the same collection
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|     return @"OWSDatabaseMigration";
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| }
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| 
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| - (void)runUpWithTransaction:(YapDatabaseReadWriteTransaction *)transaction
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| {
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|     OWSRaiseException(NSInternalInconsistencyException, @"Must override %@ in subclass", NSStringFromSelector(_cmd));
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| }
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| 
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| - (void)runUpWithCompletion:(OWSDatabaseMigrationCompletion)completion
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| {
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|     OWSAssert(completion);
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| 
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|     OWSDatabaseConnection *dbConnection = (OWSDatabaseConnection *)self.primaryStorage.newDatabaseConnection;
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| 
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|     [dbConnection asyncReadWriteWithBlock:^(YapDatabaseReadWriteTransaction *_Nonnull transaction) {
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|         [self runUpWithTransaction:transaction];
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|     }
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|         completionBlock:^{
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|             DDLogInfo(@"Completed migration %@", self.uniqueId);
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|             [self save];
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| 
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|             completion();
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|         }];
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| }
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| 
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| #pragma mark - Database Connections
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| 
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| #ifdef DEBUG
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| + (YapDatabaseConnection *)dbReadConnection
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| {
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|     return self.dbReadWriteConnection;
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| }
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| 
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| + (YapDatabaseConnection *)dbReadWriteConnection
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| {
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|     static dispatch_once_t onceToken;
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|     static YapDatabaseConnection *sharedDBConnection;
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|     dispatch_once(&onceToken, ^{
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|         sharedDBConnection = [OWSPrimaryStorage sharedManager].newDatabaseConnection;
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|     });
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| 
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|     return sharedDBConnection;
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| }
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| 
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| - (YapDatabaseConnection *)dbReadConnection
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| {
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|     return OWSDatabaseMigration.dbReadConnection;
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| }
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| 
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| - (YapDatabaseConnection *)dbReadWriteConnection
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| {
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|     return OWSDatabaseMigration.dbReadWriteConnection;
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| }
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| #endif
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| 
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| @end
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| 
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| NS_ASSUME_NONNULL_END
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