See: Description
| Interface | Description |
|---|---|
| BlockPosting |
Interface implemented by Posting objects that have position information
recorded.
|
| FieldPosting |
Interface implemented by Posting objects that have field information
recorded.
|
| IterablePosting |
An interface that allows a list of postings to be iterated over
|
| Posting |
This interface represents one posting in a posting list.
|
| WritablePosting |
Allow a
Posting to be written to a DataOut |
| Class | Description |
|---|---|
| ANDIterablePosting |
An instance of IterablePostings that works with passed arrays of ids and frequencies.
|
| ArrayOfBasicIterablePosting |
An instance of IterablePostings that works with passed arrays of ids and frequencies
|
| ArrayOfBlockFieldIterablePosting |
An array structure that golds BlockFieldIterablePostings
|
| ArrayOfBlockIterablePosting |
An array structure that golds BlockIterablePostings
|
| ArrayOfFieldIterablePosting |
An instance of IterablePostings that works with passed arrays of ids and frequencies
for each field.
|
| ArrayOfIdsIterablePosting |
An instance of IterablePostings that works with a passed array of ids
|
| BasicPostingImpl |
Implementation of a Posting that is non-iterable.
|
| BlockFieldORIterablePosting |
ORIterablePosting implementation that implements FieldPosting and BlockPosting
|
| BlockFieldPostingImpl |
A writable block field posting list
|
| BlockORIterablePosting |
ORIterablePosting implementation that implements BlockPosting
|
| BlockPostingImpl |
BlockPostingImpl class
|
| FieldOnlyIterablePosting |
This class takes an IterablePosting list that has fields,
and makes it appear as a single basic posting list.
|
| FieldORIterablePosting |
ORIterablePosting implementation that implements FieldPosting
|
| FieldPostingImpl |
Implementation of a posting containing fields
|
| IterablePostingImpl |
A base implementation of an IterablePosting, that provides
a base implementation of next(int) method.
|
| ORIterablePosting |
An IterablePosting that combines more than one IterablePosting into a single IterablePosting.
|
| PhraseIterablePosting |
Implementation of an IterablePosting for block indices that returns
only documents that match a multi-term phase.
|
| PostingIdComparator |
A comparator object for Posting objects, where they are sorted by id.
|
| PostingUtil |
Handy methods for Posting classes, such as obtaining all ids in a
posting list, or selecting the minimum id in an array of posting lists.
|
| ProximityIterablePosting |
Implementation of an IterablePosting for block indices that returns
only documents that match phases within a fixed window size.
|
Provides classes representing single postings and atreams of postings in a posting list (e.g. an inverted index or a direct index).
A single posting (e.g. occurrences of a term in document) is represented by a Posting object.
Posting p;
System.out.println("Docid "+ p.getId() + " has " + p.getFrequency() + " occurrences");
A stream of postings (e.g. terms in a document or occurrences of a term) are represented by an IterablePosting stream.
IterablePosting ip = //obtain from InvertedIndex;
while(ip.next() != IterablePosting.EOL)
{
System.err.println("Docid "+ ip.getId() + " has " + ip.getFrequency() + " occurrences");
}
More complex posting implementations are supported by other Posting child interfaces:
Terrier Information Retrieval Platform 5.1. Copyright © 2004-2019, University of Glasgow