public virtual IEnumerable <T> GetByIds <T>(IEnumerable <long> ids)
where T : Entity
{
if (ids.Any())
{
// split into pages...
var pages = ids.SplitIntoPages(500);
var unordered = (IList)this.EntityType.CreateCollectionInstance();
foreach (var page in pages)
{
var filter = new SqlFilter <T>();
filter.Constraints.AddValueListConstraint(this.EntityType.GetKeyFields()[0], page);
// put the retrieved reuslts back in the order we requested...
var toAdds = (IList)filter.ExecuteEnumerable();
foreach (var toAdd in toAdds)
{
unordered.Add(toAdd);
}
}
unordered.ReorderEntities(ids);
return((IEnumerable <T>)unordered);
}
else
{
return(this.EntityType.CreateCollectionInstance <T>());
}
}