public object Execute(Expression expression)
{
XElement queryXml = this.SerializeQuery();
Type elementType = TypeSystem.GetElementType(expression.Type);
Type ienumerableExpressionType = TypeSystem.FindIEnumerable(expression.Type);
return(null);
}
internal static Type GetElementType(Type seqType)
{
Type type = TypeSystem.FindIEnumerable(seqType);
if (type != null)
{
return(type.GetGenericArguments()[0]);
}
else
{
return(seqType);
}
}
/// <summary>
/// Checks whether the specified expression creates a collection.
/// </summary>
/// <param name="e">Expression to check.</param>
/// <returns>true if given expression is collection producing.</returns>
internal static bool IsCollectionProducingExpression(Expression e)
{
if (TypeSystem.FindIEnumerable(e.Type) != null)
{
Type elementType = TypeSystem.GetElementType(e.Type);
Debug.Assert(elementType != null, "elementType == null");
Type dscType = WebUtil.GetDataServiceCollectionOfT(elementType);
if (typeof(List <>).MakeGenericType(elementType).IsAssignableFrom(e.Type) ||
(dscType != null && dscType.IsAssignableFrom(e.Type)))
{
return(true);
}
}
return(false);
}
private static Type FindIEnumerable(Type seqType)
{
Type type;
if (seqType == null || seqType == typeof(string) || seqType == typeof(byte[]))
{
return(null);
}
else
{
if (!seqType.IsArray)
{
if (seqType.IsGenericType)
{
Type[] genericArguments = seqType.GetGenericArguments();
int num = 0;
while (num < (int)genericArguments.Length)
{
Type type1 = genericArguments[num];
Type[] typeArray = new Type[1];
typeArray[0] = type1;
Type type2 = typeof(IEnumerable <>).MakeGenericType(typeArray);
if (!type2.IsAssignableFrom(seqType))
{
num++;
}
else
{
type = type2;
return(type);
}
}
}
Type[] interfaces = seqType.GetInterfaces();
if (interfaces != null && (int)interfaces.Length > 0)
{
Type[] typeArray1 = interfaces;
int num1 = 0;
while (num1 < (int)typeArray1.Length)
{
Type type3 = typeArray1[num1];
Type type4 = TypeSystem.FindIEnumerable(type3);
if (type4 == null)
{
num1++;
}
else
{
type = type4;
return(type);
}
}
}
if (!(seqType.BaseType != null) || !(seqType.BaseType != typeof(object)))
{
return(null);
}
else
{
return(TypeSystem.FindIEnumerable(seqType.BaseType));
}
}
else
{
Type[] elementType = new Type[1];
elementType[0] = seqType.GetElementType();
return(typeof(IEnumerable <>).MakeGenericType(elementType));
}
}
}
