org.basex.core.cmd

Class DropDB

java.lang.Object

org.basex.core.Progress

org.basex.core.Command

org.basex.core.cmd.ACreate

org.basex.core.cmd.DropDB

public final class DropDB
extends ACreate

Evaluates the 'drop database' command and deletes a database.

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
DropDB(java.lang.String name) Default constructor.

Method Summary

Methods

Modifier and Type	Method and Description
void	build(CommandBuilder cb) Builds a string representation from the command.
static boolean	drop(IOFile path) Drops a database directory.
static boolean	drop(IOFile path, java.lang.String pat) Recursively drops files in database directory with the specified pattern.
static boolean	drop(java.lang.String db, Context ctx) Deletes the specified database.
boolean	newData(Context ctx) Closes an open data reference and returns true if this command will change the Context.data reference.
java.lang.String	pinned(Context ctx) Checks if the database to be updated is opened (pinned) by a process in another JVM.
protected boolean	run() Executes the command and serializes the result (internal call).

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

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

Methods inherited from class org.basex.core.Command

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

Methods inherited from class org.basex.core.Progress

abort, checkStop, det, detail, prog, 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

DropDB

public DropDB(java.lang.String name)

Default constructor.

Parameters:

name - name of database

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

pinned

public java.lang.String pinned(Context ctx)

Description copied from class: Command

Checks if the database to be updated is opened (pinned) by a process in another JVM.

Overrides:

pinned in class Command

Parameters:

ctx - database context

Returns:

name of pinned database

drop

public static boolean drop(java.lang.String db,
           Context ctx)

Deletes the specified database.

Parameters:

db - name of the database

ctx - database context

Returns:

success flag

drop

public static boolean drop(IOFile path)

Drops a database directory.

Parameters:

path - database path

Returns:

success of operation

drop

public static boolean drop(IOFile path,
           java.lang.String pat)

Recursively drops files in database directory with the specified pattern.

Parameters:

path - database path

pat - file pattern

Returns:

success of operation

newData

public boolean newData(Context ctx)

Description copied from class: Command

Closes an open data reference and returns true if this command will change the Context.data reference. This method is required by the progress dialog in the frontend.

Overrides:

newData in class ACreate

Parameters:

ctx - database context

Returns:

result of check

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