[Exist-open] Setting the password for the admin user from XQuery

[Erik B. <er...@br...>]

Erik Bruchez wrote:
> Wolfgang Meier wrote:
> 
>> Yes, why not? Internally, users are stored in an XML document: 
>> /db/system/users.xml (only accessible for admin by default).
>>
>> Concerning the web-based interface: all user management functions are 
>> also available from XQuery, so you don't necessarily need 
>> UserManagementService to create new users.
> 
> 
> Great to know! I was not looking forward to handling writing code to 
> access the UserManagementService interface. I will try going through the 
> extension functions first.

I have a question about the admin user. The doc says that by default the 
password is null.

Now if I run these from XQuery:

   xmldb:authenticate('/db/', 'admin', ())
   xmldb:authenticate('/db/', 'admin', '')
   xmldb:authenticate('/db/', 'admin', 'admin')

I get false(). What I then tried to do is setting a password for the 
admin user. So I tried:

   xmldb:change-user('admin', 'password', (), ())

But this throws "you are not allowed to change this user".

I was tring to emulate setting the admin password as done in XmldbRealm:

   User adminUser = service.getUser(SecurityManager.DBA_USER);
   if(adminUser.getPassword() == null){
     adminUser.setPassword("admin");
     log("Update Admin User on inital start");
   }

Can I actually do this from XQuery, or do I have to use the admin 
interface? Note that here I am using eXist as an embedded db.

Thanks,

-Erik