Super ugly code. Discussion: https://alpha.app.net/fcy/post/3286152

gistfile1.m

@implementation DatabaseConnection

static DatabaseConnection *connection;

+ (DatabaseConnection *)connection;
{
  return connection;
}

+ (void)setConnection:(DatabaseConnection *)newConnection;
{
	[newConnection retain];
	[connection release];
	connection = newConnection;
}

// open connection
- (void) open;
{}

// close connection
- (void) close;
{}

- (id)copyWithZone:(NSZone *)zone {
	return self;
}

- (id)retain {
	return self;
}

- (unsigned)retainCount {
	return UINT_MAX;
}

- (void)release {
}

- (id)autorelease {
	return self;
}


@end