OdbcBackend class sealed

Typed wrapper around a native ODBC connection used by the repository layer. Replaces the historical dynamic _native field with a sealed hierarchy so consumers can dispatch via exhaustive pattern matching instead of repeated as casts.

Two variants are supported:

• SyncBackend wraps a NativeOdbcConnection (blocking FFI). All operations return values directly.
• AsyncBackend wraps an AsyncNativeOdbcConnection (worker isolate). All operations return Futures.

The repository does not assume value identity — it always reaches the underlying connection through connection. Construct one via the helper factory OdbcBackend.fromNative or directly with the variant constructors when the type is known statically.

Implementers

• AsyncBackend
• SyncBackend

Properties

hashCode → int

The hash code for this object.

no setter, inherited

isAsync → bool

Whether this backend dispatches calls to a worker isolate.

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

fromNative(Object native) → OdbcBackend

Builds a backend from an untyped reference. Accepts only NativeOdbcConnection or AsyncNativeOdbcConnection; throws ArgumentError otherwise. Use this on FFI / DI seams where the concrete type is only known at runtime; prefer the typed constructors elsewhere.