public static bool IsConcurrencyTimestamp(EdmMember member)
{
Facet facet = member.TypeUsage.Facets.FirstOrDefault((Facet p) => p.Name == "ConcurrencyMode");
if (facet == null || facet.Value == null || (ConcurrencyMode)facet.Value != ConcurrencyMode.Fixed)
{
return(false);
}
facet = member.TypeUsage.Facets.FirstOrDefault((Facet p) => p.Name == "FixedLength");
if (facet == null || facet.Value == null || !(bool)facet.Value)
{
return(false);
}
facet = member.TypeUsage.Facets.FirstOrDefault((Facet p) => p.Name == "MaxLength");
if (facet == null || facet.Value == null || (int)facet.Value != 8)
{
return(false);
}
MetadataProperty storeGeneratedPattern = ObjectContextUtilities.GetStoreGeneratedPattern(member);
return(storeGeneratedPattern != null && facet.Value != null && !((string)storeGeneratedPattern.Value != "Computed"));
}
public static void AttachAsModified <T>(this DbSet <T> dbSet, T current, T original, DbContext dbContext) where T : class
{
if (dbSet == null)
{
throw new ArgumentNullException("dbSet");
}
if (current == null)
{
throw new ArgumentNullException("current");
}
if (original == null)
{
throw new ArgumentNullException("original");
}
if (dbContext == null)
{
throw new ArgumentNullException("dbContext");
}
DbEntityEntry <T> dbEntityEntry = dbContext.Entry <T>(current);
if (dbEntityEntry.State == EntityState.Detached)
{
dbSet.Attach(current);
}
else
{
dbEntityEntry.State = EntityState.Modified;
}
ObjectContext objectContext = ((IObjectContextAdapter)dbContext).ObjectContext;
ObjectStateEntry objectStateEntry = ObjectContextUtilities.AttachAsModifiedInternal <T>(current, original, objectContext);
if (objectStateEntry.State != EntityState.Modified)
{
dbEntityEntry.State = EntityState.Modified;
}
}
