Package org.basex.core.cmd

Class DropDB

java.lang.Object

org.basex.core.jobs.Job

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 2005-21, BSD License, Christian Gruen

Field Summary

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

lock

Fields inherited from class org.basex.core.Command

args, context, exception, in, maxResults, openDB, options, out, soptions, uri

Fields inherited from class org.basex.core.jobs.Job

state, updating

Constructor Summary

Constructors

Constructor	Description
DropDB(String name)	Default constructor.

Method Summary

Modifier and Type	Method	Description
void	addLocks()	Adds the strings (databases, special identifiers) for which locks need to be acquired.
void	build(CmdBuilder cb)	Builds a string representation from the command.
static boolean	drop(String db, StaticOptions sopts)	Deletes the specified database.
static boolean	drop(Data data, StaticOptions sopts)	Deletes the specified database.
static boolean	drop(IOFile path, String pat)	Recursively drops files in database directory with the specified pattern.
boolean	newData(Context ctx)	Closes an open data reference and returns true if this command will change the Context.data() reference.
protected boolean	run()	Executes the command and serializes the result (internal call).

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

stoppable, supportsProg

Methods inherited from class org.basex.core.Command

addLocks, baseURI, baseURI, close, error, exception, execute, execute, getOption, getOption, info, info, init, maxResults, result, run, run, setInput, setInput, toString, toString, updated, updating

Methods inherited from class org.basex.core.jobs.Job

active, checkStop, detailedInfo, jc, memory, popJob, progressInfo, pushJob, register, shortInfo, state, stop, stopped, timeout, unregister

Methods inherited from class java.lang.Object

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

Constructor Details

DropDB

public DropDB(String name)

Default constructor.

Parameters:

name - name of database

Method Details

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

drop

public static boolean drop(Data data,
 StaticOptions sopts)

Deletes the specified database. Calls for main-memory database instances are ignored.

Parameters:

data - data reference

sopts - static options

Returns:

success flag

drop

public static boolean drop(String db,
 StaticOptions sopts)

Deletes the specified database.

Parameters:

db - name of the database

sopts - static options

Returns:

success flag

drop

public static boolean drop(IOFile path,
 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 only required by the GUI.

Overrides:

newData in class ACreate

Parameters:

ctx - database context

Returns:

result of check

addLocks

public void addLocks()

Description copied from class: Job

Adds the strings (databases, special identifiers) for which locks need to be acquired.

Overrides:

addLocks in class ACreate

build

public void build(CmdBuilder 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