uk.ac.gla.terrier.structures
Class DocIndexEncodedHash

java.lang.Object
  uk.ac.gla.terrier.structures.DocumentIndex
      uk.ac.gla.terrier.structures.DocumentIndexEncoded
          uk.ac.gla.terrier.structures.DocIndexEncodedHash

All Implemented Interfaces:

Closeable, IndexConfigurable

public class DocIndexEncodedHash
extends DocumentIndexEncoded

Field Summary

Fields inherited from class uk.ac.gla.terrier.structures.DocumentIndex

entryLength

Constructor Summary

DocIndexEncodedHash()

DocIndexEncodedHash(java.lang.String filename)

DocIndexEncodedHash(java.lang.String path, java.lang.String prefix)

Method Summary

int	getDocumentId(java.lang.String docno) Returns the id of a document with a given document number.
static void	main(java.lang.String[] args)
boolean	seek(java.lang.String docno) Overrides the seek(String s) method of the super class.

Methods inherited from class uk.ac.gla.terrier.structures.DocumentIndexEncoded

getDirectIndexEndOffset, getDirectIndexStartOffset, getDocumentLength, getDocumentLength, getDocumentNumber, getNumberOfDocuments, loadIntoMemory, print, seek, setDocnoEntryLength

Methods inherited from class uk.ac.gla.terrier.structures.DocumentIndex

close, setIndex

Methods inherited from class java.lang.Object

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

Constructor Detail

DocIndexEncodedHash

public DocIndexEncodedHash(java.lang.String path,
                           java.lang.String prefix)
                    throws java.io.IOException

Throws:

java.io.IOException

DocIndexEncodedHash

public DocIndexEncodedHash(java.lang.String filename)
                    throws java.io.IOException

Throws:

java.io.IOException

DocIndexEncodedHash

public DocIndexEncodedHash()
                    throws java.io.IOException

Throws:

java.io.IOException

Method Detail

seek

public boolean seek(java.lang.String docno)

Description copied from class: DocumentIndexEncoded

Overrides the seek(String s) method of the super class.

Overrides:

seek in class DocumentIndexEncoded

Parameters:

docno - String the document number of the document we are seeking.

Returns:

Returns false if the given docno could not be found in the DocumentIndex

getDocumentId

public int getDocumentId(java.lang.String docno)

Description copied from class: DocumentIndexEncoded

Returns the id of a document with a given document number.

Overrides:

getDocumentId in class DocumentIndexEncoded

Parameters:

docno - java.lang.String The document's number

Returns:

int The document's id, or a negative number if a document with the given number doesn't exist.

main

public static void main(java.lang.String[] args)