org.terrier.structures.bit

Class BlockDirectIndex

java.lang.Object

org.terrier.structures.bit.BitPostingIndex

org.terrier.structures.bit.DirectIndex

org.terrier.structures.bit.BlockDirectIndex

All Implemented Interfaces:

Closeable, AutoCloseable, PostingIndex<BitIndexPointer>

Deprecated.

public class BlockDirectIndex
extends DirectIndex

Extended direct index that saves both block and field information about the terms that appear in a document.

Author:

Douglas Johnson, Vassilis Plachouras

Nested Class Summary

Nested classes/interfaces inherited from interface org.terrier.structures.PostingIndex

PostingIndex.DocidSpecificDocumentIndex

Field Summary

Fields

Modifier and Type	Field and Description
protected int	DocumentBlockCountDelta Deprecated.

Fields inherited from class org.terrier.structures.bit.DirectIndex

docIndex

Fields inherited from class org.terrier.structures.bit.BitPostingIndex

doi, fieldCount, file, index, postingConstructor, postingImplementation

Constructor Summary

Constructors

Constructor and Description
BlockDirectIndex(IndexOnDisk index, String structureName) Deprecated. Constructs an instance of the class with the given index, using the specified structure name.
BlockDirectIndex(IndexOnDisk index, String structureName, Class<? extends IterablePosting> postingClass) Deprecated. Constructs an instance of the class with

Method Summary

Methods

Modifier and Type	Method and Description
int[][]	getTerms(BitIndexPointer pointer) Deprecated. Get the terms for the document at the specified bit index pointer.
int[][]	getTerms(int docid) Deprecated. Returns a five dimensional array containing the term ids and the term frequencies for the given document.

Methods inherited from class org.terrier.structures.bit.DirectIndex

main

Methods inherited from class org.terrier.structures.bit.BitPostingIndex

close, getPostings, setPostingImplementation

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DocumentBlockCountDelta

protected int DocumentBlockCountDelta

Deprecated.

Constructor Detail

BlockDirectIndex

public BlockDirectIndex(IndexOnDisk index,
                String structureName)
                 throws IOException

Deprecated.

Constructs an instance of the class with the given index, using the specified structure name.

Parameters:

index - The index to be used

structureName - the name of this direct index

Throws:

IOException

BlockDirectIndex

public BlockDirectIndex(IndexOnDisk index,
                String structureName,
                Class<? extends IterablePosting> postingClass)
                 throws IOException

Deprecated.

Constructs an instance of the class with

Parameters:

index -

structureName -

postingClass -

Throws:

IOException

Method Detail

getTerms

public int[][] getTerms(int docid)
                 throws IOException

Deprecated.

Returns a five dimensional array containing the term ids and the term frequencies for the given document.

Overrides:

getTerms in class DirectIndex

Parameters:

docid - the id of the document whose terms we are looking for.

Returns:

int[][] a five dimensional array containing the term ids, frequencies, field scores, block frequencies and the containing the block ids.

Throws:

IOException

getTerms

public int[][] getTerms(BitIndexPointer pointer)
                 throws IOException

Deprecated.

Get the terms for the document at the specified bit index pointer. See getTerms(int docid) for the return specification.

Overrides:

getTerms in class DirectIndex

Throws:

IOException