private IEnumerable <string> GetKeys <T>(MetadataContainer container) where T : class
{
var typeDescr = container.GetTypeDescriptor(typeof(T));
var properties = typeDescr.GetProperties().OfType <PropertyDescriptor>();
var result = properties.Where(p => p.Attributes[typeof(KeyAttribute)] != null).Select(x => x.Name).ToList();
return(result);
}
/// <summary>
/// A linkTable entity contains many properties that can be annotated as KeyAttribute. In this method we mark all of them to be excluded (using the ExceludeAttribute), except for
/// those of them that are actually allocated as key properties. This way, the generated entity at the client will only have properties that really are KeyAttributes.
/// </summary>
/// <param name="metaData"> </param>
private void MarkLinkTableKeysAsDataMembers(MetadataClass <TLinkTable> metaData)
{
var linkTableMetaData = _metaDataContainer.Entity <TLinkTable>();
var typeDescr = _metaDataContainer.GetTypeDescriptor(typeof(TLinkTable));
foreach (var propDescr in typeDescr.GetProperties().OfType <PropertyDescriptor>())
{
var memberMetadata = metaData.GetMemberMetadata(propDescr.Name);
if (memberMetadata == null
||
(memberMetadata.OfType <KeyAttribute>().Any() == false &&
memberMetadata.OfType <AssociationAttribute>().Any() == false))
{
linkTableMetaData.AddMetadata(propDescr.Name, new ExcludeAttribute());
}
}
}