MssqlCapabilityCache class

Shared dialect resolution for one server and one database.

Asking SERVERPROPERTY and sys.databases once per repository was a round-trip per table getter. Two repositories of the same database — and two callers that race — share one in-flight Future keyed by host, port and the session's current database. A USE that changes the database is a different key, not a stale answer. An explicit invalidate is the answer after a reconnect or a compatibility-level change.

This is not a compilation cache of user SQL. Caching raw query text would pin tenant values in a process-wide map with no bound.

Constructors

MssqlCapabilityCache()

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

invalidate({MssqlSession? session}) → void

Drops a cached dialect so the next resolve asks the server again.

keyFor(MssqlSession session) → String

Host, port and current database — not the login catalog, and not a connection identity. Two leases of the same database share; a USE does not.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

resolve(MssqlSession session) → Future<MssqlDialect>

The dialect for session, asking the server at most once per key.

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Properties

shared → MssqlCapabilityCache

Process-wide cache used when a repository or context was not given one.

final