internal static bool IsValidSortOpKeyType(TypeUsage typeUsage)
{
if (!TypeSemantics.IsRowType(typeUsage))
{
return(TypeSemantics.IsOrderComparable(typeUsage));
}
foreach (EdmMember property in ((RowType)typeUsage.EdmType).Properties)
{
if (!TypeHelpers.IsValidSortOpKeyType(property.TypeUsage))
{
return(false);
}
}
return(true);
}
//
// Type Semantics
//
/// <summary>
/// Determines whether a given typeUsage is valid as OrderBy sort key
/// </summary>
/// <param name="typeUsage"> </param>
/// <returns> </returns>
internal static bool IsValidSortOpKeyType(TypeUsage typeUsage)
{
if (TypeSemantics.IsRowType(typeUsage))
{
var rowType = (RowType)typeUsage.EdmType;
foreach (var property in rowType.Properties)
{
if (!IsValidSortOpKeyType(property.TypeUsage))
{
return(false);
}
}
return(true);
}
else
{
return(TypeSemantics.IsOrderComparable(typeUsage));
}
}
