コード例 #1
0
        IQueryable IQueryProvider.CreateQuery(Expression expression)
        {
            Type elementType = ExpressionTypeSystem.GetElementType(expression.Type);

            try
            {
                return((IQueryable)Activator.CreateInstance(typeof(Query <>).MakeGenericType(elementType), new object[] { this, expression }));
            }
            catch (TargetInvocationException tie)
            {
                throw tie.InnerException;
            }
        }
コード例 #2
0
        public override object Execute(Expression expression)
        {
            var result = this.Translate(expression);
            var data   = _client.GetData(result.QueryString);

            if (result.Projector != null)
            {
                Type elementType = ExpressionTypeSystem.GetElementType(expression.Type);
                var  projector   = result.Projector.Compile();
                return(Activator.CreateInstance(
                           typeof(ProjectionReader <,>).MakeGenericType(typeof(T), elementType),
                           BindingFlags.Instance | BindingFlags.NonPublic, null,
                           new object[] { data, projector },
                           null
                           ));
            }
            else
            {
                return(data);
            }
        }