public IEnumerable <int> GetLinkedDNTags(int dnTag, string attributeName)
{
SchemaAttribute attr = this.schema.FindAttribute(attributeName);
if (!attr.LinkId.HasValue)
{
//TODO: Throw a proper exception
// TODO: Check that attribute type is DN
throw new Exception("This is not a linked multivalue attribute.");
}
int linkId = attr.LinkId.Value;
// Remove the rightmost bit that indicates if this is a forward link or a backlink.
int linkBase = linkId >> 1;
// Columns order in index: link_DNT, link_base, backlink_DNT
Key key = Key.Compose(dnTag, linkBase);
key.AddWildcard();
cursor.FindRecords(MatchCriteria.EqualTo, key);
while (cursor.MoveNext())
{
// TODO: Not deactivated?
int foundTag = (int)cursor.IndexRecord[backlinkDNCol];
yield return(foundTag);
}
}
private void FindLinkedRecords(int dnTag, string attributeName)
{
SchemaAttribute attr = this.schema.FindAttribute(attributeName);
if (!attr.LinkId.HasValue)
{
//TODO: Throw a proper exception
throw new Exception("This is not a linked multivalue attribute.");
}
int linkBase = attr.LinkBase.Value;
// Columns order in index: link_DNT, link_base, backlink_DNT
Key key = Key.Compose(dnTag, linkBase);
key.AddWildcard();
this.cursor.FindRecords(MatchCriteria.EqualTo, key);
}
