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add internal utilities to force checkpoint operations on SQLite

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John Rommel Estropia
2017-07-01 16:45:11 +09:00
parent 809aa4ff96
commit 3096cb784c
3 changed files with 26 additions and 0 deletions
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16
Sources/SQLiteStore.swift
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@@ -205,6 +205,22 @@ public final class SQLiteStore: LocalStorage {
return storeOptions
}
/**
Called by the `DataStack` to perform checkpoint operations on the storage. For `SQLiteStore`, this converts the database's WAL journaling mode to DELETE to force a checkpoint.
*/
public func cs_finalizeStorageAndWait(soureModelHint: NSManagedObjectModel) throws {
_ = try withExtendedLifetime(NSPersistentStoreCoordinator(managedObjectModel: soureModelHint)) { (coordinator: NSPersistentStoreCoordinator) in
try coordinator.addPersistentStore(
ofType: type(of: self).storeType,
configurationName: self.configuration,
at: fileURL,
options: [NSSQLitePragmasOption: ["journal_mode": "DELETE"]]
)
}
}
/**
Called by the `DataStack` to perform actual deletion of the store file from disk. Do not call directly! The `sourceModel` argument is a hint for the existing store's model version. For `SQLiteStore`, this converts the database's WAL journaling mode to DELETE before deleting the file.
*/