Package org.basex.index.value

Class UpdatableDiskValues

java.lang.Object

org.basex.index.value.ValueIndex

org.basex.index.value.DiskValues

org.basex.index.value.UpdatableDiskValues

All Implemented Interfaces:

Index

public final class UpdatableDiskValues
extends DiskValues

This class provides access and update functions to attribute values and text contents stored on disk. The data structure is described in the DiskValuesBuilder class.

Author:

BaseX Team 2005-24, BSD License, Christian Gruen

Field Summary

Fields inherited from class org.basex.index.value.ValueIndex

data, type

Constructor Summary

Constructors

Constructor	Description
UpdatableDiskValues(Data data, IndexType type)	Constructor, initializing the index structure.

Method Summary

Modifier and Type	Method	Description
void	add(ValueCache values)	Add entries to the index.
void	delete(ValueCache values)	Deletes entries from the index.
protected int	pre(int id)	Returns the pre value for the specified id.
protected IntList	pres(int sz, long offset)	Iterator method.
String	toString()

Methods inherited from class org.basex.index.value.DiskValues

close, costs, drop, entries, flush, get, get, info, iter, size, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

UpdatableDiskValues

public UpdatableDiskValues(Data data,
                           IndexType type)
                    throws IOException

Constructor, initializing the index structure.

Parameters:

data - data reference

type - index type

Throws:

IOException - I/O Exception

Method Detail

pre

protected int pre(int id)

Description copied from class: DiskValues

Returns the pre value for the specified id.

Overrides:

pre in class DiskValues

Parameters:

id - id value

Returns:

pre value

add

public void add(ValueCache values)

Description copied from class: ValueIndex

Add entries to the index.

Overrides:

add in class DiskValues

Parameters:

values - value cache with [key, id-list] pairs

delete

public void delete(ValueCache values)

Description copied from class: ValueIndex

Deletes entries from the index.

Overrides:

delete in class DiskValues

Parameters:

values - value cache with [key, id-list] pairs

pres

protected IntList pres(int sz,
                       long offset)

Description copied from class: DiskValues

Iterator method.

Important: This method is thread-safe.

Overrides:

pres in class DiskValues

Parameters:

sz - number of values

offset - offset

Returns:

sorted pre values

toString

public String toString()

Overrides:

toString in class DiskValues