org.basex.index
Class FTTrie

java.lang.Object
  org.basex.index.FTIndex
      org.basex.index.FTTrie

All Implemented Interfaces:

Index

public final class FTTrie
extends FTIndex

This class indexes text contents in a compressed trie on disk.

Author:

Workgroup DBIS, University of Konstanz 2005-10, ISC License, Christian Gruen, Sebastian Gath

Method Summary

void	close() Closes the index.
IndexIterator	ids(IndexToken ind) Returns an iterator for the index results.
byte[]	info() Returns information on the index structure.
int	nrIDs(IndexToken ind) Returns the (approximate/estimated) number of ids for the specified token.

Methods inherited from class org.basex.index.FTIndex

get

Methods inherited from class java.lang.Object

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

Method Detail

info

public byte[] info()

Description copied from interface: Index

Returns information on the index structure.

Returns:

info

nrIDs

public int nrIDs(IndexToken ind)

Description copied from interface: Index

Returns the (approximate/estimated) number of ids for the specified token.

Parameters:

ind - token to be found

Returns:

number of ids

ids

public IndexIterator ids(IndexToken ind)

Description copied from interface: Index

Returns an iterator for the index results.

Parameters:

ind - token to be found

Returns:

ids

close

public void close()
           throws IOException

Description copied from interface: Index

Closes the index.

Throws:

IOException - I/O exception