| DisjointIterator | Used to iterate over the documents which occur in a set of disjoint iterators all belonging to the same index |
| DocIterator | Used to iterate through all the documents and links associated with a an IndexArchiveBundle. It iterates through each doc or link regarless of the words it contains. It also makes it easy to get the summaries of these documents. |
| GroupIterator | This iterator is used to group together documents or document parts which share the same url. For instance, a link document item and the document that it links to will both be stored in the IndexArchiveBundle by the QueueServer. This iterator would combine both these items into a single document result with a sum of their score, and a summary, if returned, containing text from both sources. The iterator's purpose is vaguely analagous to a SQL GROUP BY clause |
| IndexBundleIterator | Abstract classed used to model iterating documents indexed in an IndexArchiveBundle or set of such bundles. |
| IntersectIterator | Used to iterate over the documents which occur in all of a set of iterator results |
| NegationIterator | Used to iterate over the documents which don't occur in a set of iterator results |
| UnionIterator | Used to iterate over the documents which occur in any of a set of WordIterator results |
| WordIterator | Used to iterate through the documents associated with a word in an IndexArchiveBundle. It also makes it easy to get the summaries of these documents. |