internal ColumnPredicate CreatePredicate <TDataRecord>(TDataRecord record) where TDataRecord : DataRecord <TDataRecord>, new()
{
ColumnPredicate predicate = PrimaryKey.CreatePredicate(record);
if (!Equals(predicate, null))
{
return(predicate);
}
foreach (var property in record.GetUpdatedProperties())
{
object value = property.InvokeGetter(record);
if (value == null)
{
continue; // TODO: Maybe handle setting null on DataRecords and creating predicates that look for the null.
}
if (Equals(predicate, null))
{
predicate = (Columns.FindColumn(property.Name) == value);
}
else
{
predicate = (predicate & (Columns.FindColumn(property.Name) == value));
}
}
return(predicate);
}
