Namespace LinqToDB.Internal.Linq.Builder

CteAnnotationsContainer: Immutable carrier for the state produced by the ICteBuilder callback. Placed into the query expression tree as a single constant so linq2db's query-cache equality comparer can discriminate distinct AsCte(b => ...) configurations: reference-equal delegate values would otherwise collapse to the same cache entry. The constructor snapshots the caller's annotation bag into an internally-owned store, so post-call mutations of the source Annotatable cannot affect translation or cache keying.

CteBuilderImpl: Default implementation of ICteBuilder used during expression translation. Captures configuration chosen by the user so it can be copied onto the emitted CteClause.

IAnnotatableBuilderInternal: Internal extension surface for fluent builders that carry an annotation bag. Provider-specific extension methods under LinqToDB reach the annotations through this interface instead of downcasting to the concrete builder implementation, keeping third-party extension authoring symmetric with in-box extensions.