IList CreateCollection(Object parent)
{
XPBaseCollection collection;
if (parent == null)
{
collection = new XPCollection(session, root);
XPMemberInfo parentMemberInfo = hdict.GetParentMember(root);
if (parentMemberInfo != null)
{
collection.Criteria = new NullOperator(new OperandProperty(parentMemberInfo.Name));
}
}
else
{
XPClassInfo classInfo = session.GetClassInfo(parent);
XPMemberInfo childrenMemberInfo = hdict.GetChildrenMember(classInfo);
if (childrenMemberInfo == null)
{
return(new object[0]);
}
collection = new XPCollection(session, childrenMemberInfo.CollectionElementType);
XPMemberInfo parentMemberInfo = hdict.GetParentMember(childrenMemberInfo.CollectionElementType);
System.Diagnostics.Debug.Assert(parentMemberInfo != null);
collection.Criteria = new BinaryOperator(new OperandProperty(parentMemberInfo.Name), new OperandValue(parent), BinaryOperatorType.Equal);
}
/* without a sotring the order of objects might differ */
collection.Sorting.Add(new SortProperty(root.KeyProperty.Name, DevExpress.Xpo.DB.SortingDirection.Ascending));
return(collection);
}
