org.basex.index
Class MemValues

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

All Implemented Interfaces:

Index

public final class MemValues
extends Set
implements Index

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

Author:

Workgroup DBIS, University of Konstanz 2005-07, ISC License, Christian Gruen

Nested Class Summary

Nested classes/interfaces inherited from interface org.basex.index.Index

Index.TYPE

Field Summary

Fields inherited from class org.basex.util.Set

size

Constructor Summary

MemValues()

Method Summary

void	close() Close the index.
int	get(byte[] key) Returns the id for the specified key.
int[][]	idPos(byte[] tok, FTOption ftO) Returns all ids from index stored for tok with respect to ftO.
int[]	ids(byte[] key) Returns the value for the specified key.
int[]	ids(byte[] tok, FTOption ftO) Returns all ids from index stored for tok with respect to ftO.
int	index(byte[] key, int id) Indexes the specified keys and values.
void	info(PrintOutput out) Returns information on the index structure.
int	nrIDs(byte[] key) Returns the value for the specified key.
byte[]	token(int id) Returns the token for the specified id.

Methods inherited from class org.basex.util.Set

add, id, key, keys, size

Methods inherited from class java.lang.Object

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

Constructor Detail

MemValues

public MemValues()

Method Detail

close

public void close()

Close the index.

Specified by:

close in interface Index

get

public int get(byte[] key)

Returns the id for the specified key.

Parameters:

key - key

Returns:

id (negative if value wasn't found)

idPos

public int[][] idPos(byte[] tok,
                     FTOption ftO)

Returns all ids from index stored for tok with respect to ftO.

Specified by:

idPos in interface Index

Parameters:

tok - token to be found

ftO - FTOption for tok

Returns:

number of ids

ids

public int[] ids(byte[] key)

Returns the value for the specified key.

Specified by:

ids in interface Index

Parameters:

key - key to be found

Returns:

value or null if nothing was found

ids

public int[] ids(byte[] tok,
                 FTOption ftO)

Returns all ids from index stored for tok with respect to ftO.

Specified by:

ids in interface Index

Parameters:

tok - token to be found

ftO - FTOption for tok

Returns:

number of ids

index

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

Indexes the specified keys and values.

Parameters:

key - key

id - id value

Returns:

index position

info

public void info(PrintOutput out)
          throws java.io.IOException

Returns information on the index structure.

Specified by:

info in interface Index

Parameters:

out - output stream

Throws:

java.io.IOException - in case of write errors

nrIDs

public int nrIDs(byte[] key)

Returns the value for the specified key.

Specified by:

nrIDs in interface Index

Parameters:

key - key to be found

Returns:

value or null if nothing was found

token

public byte[] token(int id)

Returns the token for the specified id.

Parameters:

id - id

Returns:

token