ForwardIndex

All Superinterfaces:: DocumentMap<C>, Index<C>

All Known Implementing Classes:: LuceneForwardIndex, WrapperIndividualForwardContentIndex

public interface ForwardIndex<C>
extends Index<C>

Interface for defining a forward index.

Method Summary

Modifier and Type	Method	Description
`FreqVector`	`getContentVector(int contentId)`	Obtains a user vector.
`long`	`getTermFreq(java.lang.String term, int contentId)`	Obtains the term frequency of a term in a user vector.

Methods inherited from interface es.uam.eps.ir.relison.content.index.DocumentMap

getContent, getContentId, numDocs

Methods inherited from interface es.uam.eps.ir.relison.content.index.Index

getAllTerms, getDocFreq, getPostings, getTotalFreq

Method Details
- getContentVector
  
  FreqVector getContentVector(int contentId) throws java.io.IOException
  
  Obtains a user vector.
  
  Parameters:
  
  contentId - identifier of the content in the index.
  
  Returns:
  
  a frequency vector for the corresponding content.
  
  Throws:
  
  java.io.IOException - if something fails while reading the index.
- getTermFreq
  
  long getTermFreq(java.lang.String term, int contentId) throws java.io.IOException
  
  Obtains the term frequency of a term in a user vector.
  
  Parameters:
  
  term - the term to look up.
  
  contentId - the content identifier
  
  Returns:
  
  the frequency of the term in the content vector
  
  Throws:
  
  java.io.IOException - if something fails while reading the value.