org.basex.index.value

Class MemValues

java.lang.Object

org.basex.util.hash.TokenSet

org.basex.index.value.MemValues

All Implemented Interfaces:

java.lang.Iterable<byte[]>, Index

Direct Known Subclasses:

UpdatableMemValues

public class MemValues
extends TokenSet
implements Index

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

Author:

BaseX Team 2005-12, BSD License, Christian Gruen

Field Summary

Fields inherited from class org.basex.util.hash.TokenSet

CAP, keys, size

Constructor Summary

Constructors

Constructor and Description
MemValues(Data d) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
void	close() Closes the index.
int	count(IndexToken it) Returns the (approximate/estimated) number of hits for the specified token.
void	delete(byte[] key, int id) Remove record from the index.
EntryIterator	entries(byte[] prefix) Returns all entries that start with the specified prefix.
int	index(byte[] key, int id) Indexes the specified keys and values.
byte[]	info() Returns information on the index structure.
IndexIterator	iter(IndexToken tok) Returns an iterator for the index results.
void	rehash() Resizes the hash table.

Methods inherited from class org.basex.util.hash.TokenSet

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

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

MemValues

public MemValues(Data d)

Constructor.

Parameters:

d - data instance

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

delete

public void delete(byte[] key,
          int id)

Remove record from the index.

Parameters:

key - record key

id - record id

iter

public IndexIterator iter(IndexToken tok)

Description copied from interface: Index

Returns an iterator for the index results.

Specified by:

iter in interface Index

Parameters:

tok - token to be found

Returns:

sorted pre values for the token

count

public int count(IndexToken it)

Description copied from interface: Index

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

Specified by:

count in interface Index

Parameters:

it - token to be found

Returns:

number of hits

entries

public EntryIterator entries(byte[] prefix)

Description copied from interface: Index

Returns all entries that start with the specified prefix.

Specified by:

entries in interface Index

Parameters:

prefix - prefix

Returns:

entries

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.

Overrides:

rehash in class TokenSet