ExtensionValidator (XWiki Commons - Extension - API 15.2-rc-1 API)

```
@Role
public interface ExtensionValidator
```
Check if executing a given action on a passed extension is allowed.
Mostly used for default behavior when ExtensionHandler does not have any special check for its type. The goal is to make easy for any environment using commons-extension module to have a default restriction on all extensions types (for example in XWiki unless the type has special checking you need programming right to install an extension).

Since:

4.2M2

Version:

$Id: dfa9ed14ccebd50bbf7305a1067f58dde656222f $

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`checkInstall(Extension extension, String namespace, org.xwiki.job.Request request)`	Check if installing the passed extension is allowed.
`void`	`checkUninstall(InstalledExtension extension, String namespace, org.xwiki.job.Request request)`	Check if uninstalling the passed extension is allowed.

- Method Detail
  - checkInstall
```
void checkInstall(Extension extension,
                  String namespace,
                  org.xwiki.job.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
  - checkUninstall
```
void checkUninstall(InstalledExtension extension,
                    String namespace,
                    org.xwiki.job.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