コード例 #1
0
        public virtual Expression BindProperty(IProperty property, bool clientEval)
        {
            if (!EntityType.IsAssignableFrom(property.DeclaringEntityType) &&
                !property.DeclaringEntityType.IsAssignableFrom(EntityType))
            {
                throw new InvalidOperationException(
                          $"Called EntityProjectionExpression.GetProperty() with incorrect IProperty. EntityType:{EntityType.DisplayName()}, Property:{property.Name}");
            }

            if (!_propertyExpressionsCache.TryGetValue(property, out var expression))
            {
                expression = new KeyAccessExpression(property, AccessExpression);
                _propertyExpressionsCache[property] = expression;
            }

            if (!clientEval &&
                expression.Name.Length == 0)
            {
                // Non-persisted property can't be translated
                return(null);
            }

            return((Expression)expression);
        }
コード例 #2
0
 /// <summary>
 ///     This is an internal API that supports the Entity Framework Core infrastructure and not subject to
 ///     the same compatibility standards as public APIs. It may be changed or removed without notice in
 ///     any release. You should only use it directly in your code with extreme caution and knowing that
 ///     doing so can result in application failures when updating to a new Entity Framework Core release.
 /// </summary>
 protected abstract Expression VisitKeyAccess(KeyAccessExpression keyAccessExpression);
コード例 #3
0
 protected override Expression VisitKeyAccess(KeyAccessExpression keyAccessExpression)
 {
     throw new NotImplementedException();
 }