Matt Bruce
f3f42c7844
Summary: - Sources: Audit, Helpers, Migrations, Models, Protocols (+2 more) Stats: - 27 files changed, 303 insertions(+), 12 deletions(-)
16 lines
633 B
Swift
16 lines
633 B
Swift
import Foundation
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/// Migration protocol that transforms a source value into a destination value.
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public protocol TransformingMigration: StorageMigration {
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/// The value type stored at the source key.
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associatedtype SourceValue: Codable & Sendable
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/// The source key to read from during migration.
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var sourceKey: StorageKey<SourceValue> { get }
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/// Transforms a source value into the destination value type.
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///
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/// - Parameter source: The value read from ``sourceKey``.
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/// - Returns: The transformed value for the destination key.
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func transform(_ source: SourceValue) async throws -> Value
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}
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