private ICollection <int> GetDeletedTermIDs()
{
if (deletedTerms == null)
{
deletedTerms = new List <int>();
SPList taxonomyHiddenList = SPExtensionHelper.GetTaxonomyHiddenList(manager.Site);
TermStore termStore = manager.TermStore;
SPQuery query = new SPQuery {
Query = Caml.Equals("IdForTermStore", termStore.Id.ToString()).ToString(),
ViewFields = Caml.ViewFields("IdForTerm").ToString()
};
foreach (SPListItem item in taxonomyHiddenList.GetItems(query))
{
if (termStore.GetTerm(new Guid((string)item["IdForTerm"])) == null)
{
deletedTerms.Add(item.ID);
}
}
}
return(deletedTerms);
}
private CamlExpression HandleNullExpression(SPModelQueryFieldInfo field, bool negate)
{
CamlExpression expression = Caml.IsNull(field.FieldRef);
if (field.FieldTypeAsString == "TaxonomyFieldType" || field.FieldTypeAsString == "TaxonomyFieldTypeMulti")
{
SPList taxonomyHiddenList = SPExtensionHelper.GetTaxonomyHiddenList(manager.Site);
foreach (SPListItem item in taxonomyHiddenList.GetItems("IdForTerm"))
{
if (manager.TermStore.GetTerm(new Guid((string)item["IdForTerm"])) == null)
{
expression |= Caml.LookupIdEquals(field.FieldRef, item.ID);
}
}
}
if (negate)
{
return(~expression);
}
return(expression);
}