org.basex.index
Class Values

java.lang.Object
  org.basex.index.Index
      org.basex.index.Values

public final class Values
extends Index

This class provides access to attribute values and text contents stored on disk.

Author:

Workgroup DBIS, University of Konstanz 2005-08, ISC License, Christian Gruen

Constructor Summary

Values(Data d, java.lang.String db, boolean txt)
Constructor, initializing the index structure.

Method Summary

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

Methods inherited from class java.lang.Object

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

Constructor Detail

Values

public Values(Data d,
              java.lang.String db,
              boolean txt)
       throws java.io.IOException

Constructor, initializing the index structure.

Parameters:

d - data reference

db - name of the database

txt - value type (texts/attributes)

Throws:

java.io.IOException - IO Exception

Method Detail

info

public byte[] info()

Description copied from class: Index

Returns information on the index structure.

Specified by:

info in class Index

Returns:

info

ids

public IndexIterator ids(IndexToken tok)

Description copied from class: Index

Returns an iterator for the index results.

Specified by:

ids in class Index

Parameters:

tok - token to be found

Returns:

ids

nrIDs

public int nrIDs(IndexToken tok)

Description copied from class: Index

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

Specified by:

nrIDs in class Index

Parameters:

tok - token to be found

Returns:

number of ids

close

public void close()
           throws java.io.IOException

Description copied from class: Index

Close the index.

Overrides:

close in class Index

Throws:

java.io.IOException - in case of write errors