org.basex.index
Class MemValues

java.lang.Object
  org.basex.util.TokenSet
      org.basex.index.MemValues

All Implemented Interfaces:

Index

public final class MemValues
extends TokenSet
implements Index

This class provides a main-memory access to attribute values and text contents.

Author:

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

Constructor Summary

MemValues()

Method Summary

void	close() Closes the index.
byte[]	get(int id) Returns the key for the specified id.
IndexIterator	ids(IndexToken tok) Returns an iterator for the index results.
int	index(byte[] key, int id) Indexes the specified keys and values.
byte[]	info() Returns information on the index structure.
int	nrIDs(IndexToken it) Returns the (approximate/estimated) number of ids for the specified token.
void	rehash() Resizes the hash table.

Methods inherited from class org.basex.util.TokenSet

add, delete, id, key, keys, read, size, write

Methods inherited from class java.lang.Object

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

Constructor Detail

MemValues

public MemValues()

Method Detail

index

public int index(byte[] key,
                 int id)

Indexes the specified keys and values.

Parameters:

key - key

id - id value

Returns:

index position

get

public byte[] get(int id)

Returns the key for the specified id.

Parameters:

id - id

Returns:

token

ids

public IndexIterator ids(IndexToken tok)

Description copied from interface: Index

Returns an iterator for the index results.

Specified by:

ids in interface Index

Parameters:

tok - token to be found

Returns:

ids

nrIDs

public int nrIDs(IndexToken it)

Description copied from interface: Index

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

Specified by:

nrIDs in interface Index

Parameters:

it - token to be found

Returns:

number of ids

info

public byte[] info()

Description copied from interface: Index

Returns information on the index structure.

Specified by:

info in interface Index

Returns:

info

close

public void close()

Description copied from interface: Index

Closes the index.

Specified by:

close in interface Index

rehash

public void rehash()

Description copied from class: TokenSet

Resizes the hash table.