protected Expression EvaluateSubtree(Expression subtree)
{
ArgumentUtility.CheckNotNull("subtree", subtree);
// Start custom digression from Relinq sealed base
var binary = subtree as BinaryExpression;
var checker = new DynamicMemberMetadataFindingVisitor();
checker.VisitExpression(subtree);
if (checker.ContainsDynamic)
{
return(subtree);
}
//if (binary != null)
//{
// var method = binary.Left as MethodCallExpression;
// if (method != null)
// {
// if (method.Method == DynamicMemberMetadata.GetMemberMethod)
// {
// return subtree;
// }
// }
// var unary = binary.Left as UnaryExpression;
// if (unary != null)
// {
// var innerMethod = unary.Operand as MethodCallExpression;
// if (innerMethod != null)
// {
// if (innerMethod.Method == DynamicMemberMetadata.GetMemberMethod)
// {
// return subtree;
// }
// }
// }
//}
// End digression
if (subtree.NodeType != ExpressionType.Constant)
{
return
(Expression.Constant(
Expression.Lambda <Func <object> >(
Expression.Convert(subtree, typeof(object)), new ParameterExpression[0]).Compile()(),
subtree.Type));
}
var constantExpression = (ConstantExpression)subtree;
var queryable = constantExpression.Value as IQueryable;
if (queryable != null && queryable.Expression != constantExpression)
{
return(queryable.Expression);
}
else
{
return(constantExpression);
}
}
protected Expression EvaluateSubtree(Expression subtree)
{
ArgumentUtility.CheckNotNull("subtree", subtree);
// Start custom digression from Relinq sealed base
var binary = subtree as BinaryExpression;
var checker = new DynamicMemberMetadataFindingVisitor();
checker.VisitExpression(subtree);
if (checker.ContainsDynamic) return subtree;
//if (binary != null)
//{
// var method = binary.Left as MethodCallExpression;
// if (method != null)
// {
// if (method.Method == DynamicMemberMetadata.GetMemberMethod)
// {
// return subtree;
// }
// }
// var unary = binary.Left as UnaryExpression;
// if (unary != null)
// {
// var innerMethod = unary.Operand as MethodCallExpression;
// if (innerMethod != null)
// {
// if (innerMethod.Method == DynamicMemberMetadata.GetMemberMethod)
// {
// return subtree;
// }
// }
// }
//}
// End digression
if (subtree.NodeType != ExpressionType.Constant)
return
Expression.Constant(
Expression.Lambda<Func<object>>(
Expression.Convert(subtree, typeof (object)), new ParameterExpression[0]).Compile()(),
subtree.Type);
var constantExpression = (ConstantExpression) subtree;
var queryable = constantExpression.Value as IQueryable;
if (queryable != null && queryable.Expression != constantExpression)
return queryable.Expression;
else
return constantExpression;
}
