Delete data from FMDB using an array in swift - swift

Question

I am trying to delete multiple rows from database. Currently, I have an array which consists of all the row id's which i want to delete. But i cannot seem to find a suitable code for it
func deleteMultiple(Id:[Int]) -> NSMutableArray {
sharedInstance.databese!.open()
var i:Int = Id.count
print(Id, i)
let resultSet:FMResultSet! = sharedInstance.databese!.executeQuery("DELETE FROM Info WHERE Id = ?", withArgumentsIn: Id)
let itemInfo:NSMutableArray = NSMutableArray ()
if (resultSet != nil)
{
while resultSet.next() {
let item:Tbl_Info = Tbl_Info()
item.Id = Int(resultSet.int(forColumn: "Id"))
item.Name = String(resultSet.string(forColumn: "Name")!)
item.LastName = String(resultSet.string(forColumn: "LastName")!)
itemInfo.add(item)
}
}
sharedInstance.databese!.close()
return itemInfo
}

Answer 1

You can execute your query in a queue it will not freeze your database.
if anything fails during the transaction FMDB Provides the rollback functionality.
Look at the sample code.
sharedInstance.databese.dbQueue.inTransaction { db, rollback in
idArray.forEach {id in
do {
let resultSet:FMResultSet! = try db.executeQuery("DELETE FROM Info WHERE Id = ?", withArgumentsIn: Id)
//Do whatever with your resultSet
} catch {
//Error occured during deleting from database.
rollback.pointee = true
}
}
}