Function getRootFromContextForDatabase

core/context.go:92–106

getRootFromContextForDatabase returns the working session's root from the context for a specific database, along with the session.

(ctx *sql.Context, database string)

// getRootFromContextForDatabase returns the working session's root from the context for a specific database, along with the session.
func getRootFromContextForDatabase(ctx *sql.Context, database string) (*dsess.DoltSession, *RootValue, error) {
	session := dsess.DSessFromSess(ctx.Session)

	if len(database) == 0 {
		database = ctx.GetCurrentDatabase()
	}
	state, ok, err := session.LookupDbState(ctx, database)
	if err != nil {
		return nil, nil, err
	}
	if !ok {
		return nil, nil, sql.ErrDatabaseNotFound.New(database)
	}
	return session, state.WorkingRoot().(*RootValue), nil
}

// IsContextValid returns whether the context is valid for use with any of the functions in the package. If this is not
// false, then there's a high likelihood that the context is being used in a temporary scenario (such as setting up the