Package es.uam.eps.ir.relison.content.index.individual

Class AbstractIndividualContentIndex<C,​U>

java.lang.Object
es.uam.eps.ir.relison.content.index.AbstractIndex<C>
es.uam.eps.ir.relison.content.index.individual.AbstractIndividualContentIndex<C,​U>
Type Parameters:
C - type of the contents.
U - type of the users.
All Implemented Interfaces:
DocumentMap<C>, Index<C>, IndividualContentIndex<C,​U>
Direct Known Subclasses:
WrapperIndividualContentIndex, WrapperIndividualForwardContentIndex
public abstract class AbstractIndividualContentIndex<C,​U>
extends AbstractIndex<C>
implements IndividualContentIndex<C,​U>
Abstract implementation of a content index.

  • Field Summary

    Fields 
    Modifier and Type Field Description
    protected it.unimi.dsi.fastutil.ints.Int2ObjectMap<U> contentsToUsers
    Mapping from identifiers to users
    protected it.unimi.dsi.fastutil.objects.Object2ObjectMap<U,​it.unimi.dsi.fastutil.ints.IntList> usersToContents
    Mapping from the users to the identifiers of the user generated contents.

    Fields inherited from class es.uam.eps.ir.relison.content.index.AbstractIndex

    backward, forward

  • Constructor Summary

    Constructors 
    Constructor Description
    AbstractIndividualContentIndex()  

  • Method Summary

    Modifier and Type Method Description
    java.util.List<java.lang.Integer> getContents​(U user)
    Given a user identifier, obtains the list of contents published by the user.
    U getUser​(int docID)
    Given a content identifier, obtains the user that created it.
    protected void loadUserContentMap​(java.lang.String indexPath, org.ranksys.formats.parsing.Parser<U> uParser)
    Loads a file containing the relation between indexes and user identifiers.

    Methods inherited from class es.uam.eps.ir.relison.content.index.AbstractIndex

    getContent, getContentId, loadContents

    Methods inherited from class java.lang.Object

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

    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

  • Field Details

    • contentsToUsers

      protected it.unimi.dsi.fastutil.ints.Int2ObjectMap<U> contentsToUsers
      Mapping from identifiers to users

    • usersToContents

      protected it.unimi.dsi.fastutil.objects.Object2ObjectMap<U,​it.unimi.dsi.fastutil.ints.IntList> usersToContents
      Mapping from the users to the identifiers of the user generated contents.

  • Constructor Details

  • Method Details

    • getUser

      public U getUser​(int docID)
      Description copied from interface: IndividualContentIndex
      Given a content identifier, obtains the user that created it.
      Specified by:
      getUser in interface IndividualContentIndex<C,​U>
      Parameters:
      docID - the content identifier.
      Returns:
      the creator of the content.

    • getContents

      public java.util.List<java.lang.Integer> getContents​(U user)
      Description copied from interface: IndividualContentIndex
      Given a user identifier, obtains the list of contents published by the user.
      Specified by:
      getContents in interface IndividualContentIndex<C,​U>
      Parameters:
      user - the user identifier
      Returns:
      the list of identifiers of the contents in the index.

    • loadUserContentMap

      protected void loadUserContentMap​(java.lang.String indexPath, org.ranksys.formats.parsing.Parser<U> uParser) throws java.io.IOException
      Loads a file containing the relation between indexes and user identifiers.
      Parameters:
      indexPath - the path of the index.
      uParser - parser for reading the users.
      Throws:
      java.io.IOException - if something fails while writing the map.