edu.umd.cloud9.collection.wikipedia
Class WikipediaForwardIndex

java.lang.Object
  edu.umd.cloud9.collection.wikipedia.WikipediaForwardIndex

All Implemented Interfaces:

DocumentForwardIndex<WikipediaPage>

public class WikipediaForwardIndex
extends Object
implements DocumentForwardIndex<WikipediaPage>

Forward index for Wikipedia collections.

Author:

Jimmy Lin

Constructor Summary

WikipediaForwardIndex()

WikipediaForwardIndex(Configuration conf)

Method Summary

String	getCollectionPath() Returns the base path of the collection.
String	getDocid(int docno) Returns the docid, given the docno
int	getDocno(String docid) Returns the docno, given the docid
WikipediaPage	getDocument(int docno) Fetches the document for a given docno.
WikipediaPage	getDocument(String docid) Fetches the document for a given docid.
int	getFirstDocno() Returns the first docno in the collection.
int	getLastDocno() Returns the last docno in the collection.
void	loadIndex(String indexFile, String mappingDataFile) Loads the index.

Methods inherited from class java.lang.Object

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

Constructor Detail

WikipediaForwardIndex

public WikipediaForwardIndex()

WikipediaForwardIndex

public WikipediaForwardIndex(Configuration conf)

Method Detail

loadIndex

public void loadIndex(String indexFile,
                      String mappingDataFile)
               throws IOException

Description copied from interface: DocumentForwardIndex

Loads the index.

Specified by:

loadIndex in interface DocumentForwardIndex<WikipediaPage>

Throws:

IOException

getCollectionPath

public String getCollectionPath()

Description copied from interface: DocumentForwardIndex

Returns the base path of the collection.

Specified by:

getCollectionPath in interface DocumentForwardIndex<WikipediaPage>

getDocument

public WikipediaPage getDocument(int docno)

Description copied from interface: DocumentForwardIndex

Fetches the document for a given docno.

Specified by:

getDocument in interface DocumentForwardIndex<WikipediaPage>

getDocument

public WikipediaPage getDocument(String docid)

Description copied from interface: DocumentForwardIndex

Fetches the document for a given docid.

Specified by:

getDocument in interface DocumentForwardIndex<WikipediaPage>

getDocno

public int getDocno(String docid)

Description copied from interface: DocumentForwardIndex

Returns the docno, given the docid

Specified by:

getDocno in interface DocumentForwardIndex<WikipediaPage>

getDocid

public String getDocid(int docno)

Description copied from interface: DocumentForwardIndex

Returns the docid, given the docno

Specified by:

getDocid in interface DocumentForwardIndex<WikipediaPage>

getFirstDocno

public int getFirstDocno()

Description copied from interface: DocumentForwardIndex

Returns the first docno in the collection.

Specified by:

getFirstDocno in interface DocumentForwardIndex<WikipediaPage>

getLastDocno

public int getLastDocno()

Description copied from interface: DocumentForwardIndex

Returns the last docno in the collection.

Specified by:

getLastDocno in interface DocumentForwardIndex<WikipediaPage>