FindMutation returns the first mutation in table for which the selector returns true.

MakeColumnIDMutationSelector returns a MutationSelector which matches a column mutation with the correct ID.

MakeIndexIDMutationSelector returns a MutationSelector which matches an index mutation with the correct ID.

NewDeferredVisitor creates a new scop.DeferredMutationVisitor.

NewImmediateVisitor creates a new scop.ImmediateMutationVisitor.

Clock is used to provide a timestamp to track loosely when something happened.

DescriptorReader is used to retrieve descriptors from the catalog.

ImmediateMutationStateUpdater contains the methods used to update the set of changes to bring about from executing immediate mutations.

NameResolver is used to retrieve fully qualified names from the catalog.

MutationSelector defines a predicate on a catalog.Mutation with no side-effects.