org.basex.core.cmd

Class OptimizeAll

java.lang.Object

org.basex.core.Progress

org.basex.core.Command

org.basex.core.cmd.ACreate

org.basex.core.cmd.OptimizeAll

public final class OptimizeAll
extends ACreate

Evaluates the 'optimize all' command and rebuilds all data structures of the currently opened database. This effectively eliminates all fragmentation and can lead to significant space savings after updates.

Author:

BaseX Team 2005-12, BSD License, Leo Woerteler

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
OptimizeAll() Default constructor.

Method Summary

Methods

Modifier and Type	Method and Description
void	build(CommandBuilder cb) Builds a string representation from the command.
java.lang.String	det() Returns short information on this process.
static void	optimizeAll(Data data, Context ctx, OptimizeAll cmd) Optimizes all data structures.
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

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

OptimizeAll

public OptimizeAll()

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

build

public void build(CommandBuilder cb)

Description copied from class: Command

Builds a string representation from the command. This string must be correctly built, as commands are sent to the server as strings.

Overrides:

build in class Command

Parameters:

cb - command builder

optimizeAll

public static void optimizeAll(Data data,
               Context ctx,
               OptimizeAll cmd)
                        throws java.io.IOException

Optimizes all data structures. Recreates the database, drops the old instance and renames the recreated instance.

Parameters:

data - disk data

ctx - database context

cmd - command reference, or null

Throws:

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

BaseXException - database exception