org.basex.core.cmd

Class Optimize

java.lang.Object

org.basex.core.Progress

org.basex.core.Command

org.basex.core.cmd.ACreate

org.basex.core.cmd.Optimize

public final class Optimize
extends ACreate

Evaluates the 'optimize' command and optimizes the data structures of the currently opened database. Indexes and statistics are refreshed, which is especially helpful after updates.

Author:

BaseX Team 2005-12, BSD License, Christian Gruen

Field Summary

Fields inherited from class org.basex.core.Command

args, context, DATAREF, in, mprop, out, perf, prop, STANDARD

Fields inherited from class org.basex.core.Progress

updating

Constructor Summary

Constructors

Constructor and Description
Optimize() Default constructor.

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.String	det() Returns short information on this process.
static void	optimize(Data data, Optimize c) Optimizes the structures of a database.
double	prog() Returns a progress value (0 - 1).
protected boolean	run() Executes the command and serializes the result (internal call).
boolean	stoppable() Returns true if this command can be stopped.

Methods inherited from class org.basex.core.cmd.ACreate

build, cache, create, drop, newData, pinned, startUpdate, stopUpdate, supportsProg

Methods inherited from class org.basex.core.Command

build, close, error, execute, execute, getOption, getOption, info, info, pinned, result, run, setInput, setInput, toString, updated, updating

Methods inherited from class org.basex.core.Progress

abort, checkStop, detail, progress, progress, startTimeout, stop, stopTimeout, tit, title

Methods inherited from class java.lang.Object

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

Constructor Detail

Optimize

public Optimize()

Default constructor.

Method Detail

run

protected boolean run()

Description copied from class: Command

Executes the command and serializes the result (internal call).

Specified by:

run in class Command

Returns:

success of operation

prog

public double prog()

Description copied from class: Progress

Returns a progress value (0 - 1). Can be overwritten to give more detailed information.

Overrides:

prog in class Progress

Returns:

header information

stoppable

public boolean stoppable()

Description copied from class: Command

Returns true if this command can be stopped. This method is required by the progress dialog in the frontend.

Overrides:

stoppable in class ACreate

Returns:

result of check

det

public java.lang.String det()

Description copied from class: Progress

Returns short information on this process.

Overrides:

det in class Progress

Returns:

header information

optimize

public static void optimize(Data data,
            Optimize c)
                     throws java.io.IOException

Optimizes the structures of a database.

Parameters:

data - data

c - calling command (can be null)

Throws:

java.io.IOException - I/O Exception during index rebuild