org.xwiki.extension.handler
Interface ExtensionHandler

@Role
public interface ExtensionHandler

Handle extension related tasks depending of the type (install, uninstall, etc...).

Since:

4.0M1

Version:

$Id: 72b51d74a1b6e662af73ebe564d18d664f6030dd $

Method Summary

void	checkInstall(Extension extension, String namespace, Request request) Check if installing the passed extension is allowed.
void	checkUninstall(InstalledExtension extension, String namespace, Request request) Check if uninstalling the passed extension is allowed.
void	initialize(LocalExtension localExtension, String namespace) Initialize the provided local extension (during application startup, re-initialization...).
void	install(LocalExtension localExtension, String namespace, Request request) Install the provided local extension.
void	uninstall(LocalExtension localExtension, String namespace, Request request) Uninstall the provided local extension.
void	upgrade(LocalExtension previousLocalExtension, LocalExtension newLocalExtension, String namespace, Request request) Upgrade the provided local extension.

Method Detail

install

void install(LocalExtension localExtension,
             String namespace,
             Request request)
             throws InstallException

Install the provided local extension.

Parameters:

localExtension - the extension to install

namespace - the namespace where to install the extension

request - extra parameters

Throws:

InstallException - error when trying to install the extension

uninstall

void uninstall(LocalExtension localExtension,
               String namespace,
               Request request)
               throws UninstallException

Uninstall the provided local extension.

Parameters:

localExtension - the extension to uninstall

namespace - the namespace from where to uninstall the extension

request - extra parameters

Throws:

UninstallException - error when trying to uninstall the extension

upgrade

void upgrade(LocalExtension previousLocalExtension,
             LocalExtension newLocalExtension,
             String namespace,
             Request request)
             throws InstallException

Upgrade the provided local extension.

Parameters:

previousLocalExtension - the previous installed version of the extension

newLocalExtension - the extension to install

namespace - the namespace from where to uninstall the extension

request - extra parameters

Throws:

InstallException - error when trying to upgrade the extension

initialize

void initialize(LocalExtension localExtension,
                String namespace)
                throws ExtensionException

Initialize the provided local extension (during application startup, re-initialization...).

Parameters:

localExtension - the extension to install

namespace - the namespace where to install the extension

Throws:

ExtensionException - error when trying to install the extension

checkInstall

void checkInstall(Extension extension,
                  String namespace,
                  Request request)
                  throws InstallException

Check if installing the passed extension is allowed.

It is generally used to do some non generic checking of whether or not it is possible to install the passed extension (not the right environment, not enough rights, etc.).

Parameters:

extension - the extension to install

namespace - the namespace from where to install

request - extra parameters

Throws:

InstallException - installing the extension will fail

Since:

4.2M2

checkUninstall

void checkUninstall(InstalledExtension extension,
                    String namespace,
                    Request request)
                    throws UninstallException

Check if uninstalling the passed extension is allowed.

It is generally used to do some non generic checking of whether or not it is possible to uninstall the passed extension (not the right environment, not enough rights, etc.).

Parameters:

extension - the extension to uninstall

namespace - the namespace from where to uninstall

request - extra parameters

Throws:

UninstallException - uninstalling the extension will fail

Since:

4.2M2