org.apache.wiki.auth.authorize

Interface GroupDatabase

All Known Implementing Classes:

JDBCGroupDatabase, XMLGroupDatabase

public interface GroupDatabase

Defines an interface for loading, persisting and storing wiki groups.

Since:

2.4.22

Method Summary

Modifier and Type	Method and Description
void	delete(Group group) Looks up and deletes a Group from the group database.
Group[]	groups() Returns all wiki groups that are stored in the GroupDatabase as an array of Group objects.
void	initialize(WikiEngine engine, Properties props) Initializes the group database based on values from a Properties object.
void	save(Group group, Principal modifier) Saves a Group to the group database.

Method Detail

delete

void delete(Group group)
     throws WikiSecurityException

Looks up and deletes a Group from the group database. If the group database does not contain the supplied Group. this method throws a NoSuchPrincipalException. The method commits the results of the delete to persistent storage.

Parameters:

group - the group to remove

Throws:

WikiSecurityException - if the database does not contain the supplied group (thrown as NoSuchPrincipalException) or if the commit did not succeed

initialize

void initialize(WikiEngine engine,
                Properties props)
         throws NoRequiredPropertyException,
                WikiSecurityException

Initializes the group database based on values from a Properties object.

Parameters:

engine - the wiki engine

props - the properties used to initialize the group database

Throws:

WikiSecurityException - if the database could not be initialized successfully

NoRequiredPropertyException - if a required property is not present

save

void save(Group group,
          Principal modifier)
   throws WikiSecurityException

Saves a Group to the group database. Note that this method must fail, and throw an IllegalArgumentException, if the proposed group is the same name as one of the built-in Roles: e.g., Admin, Authenticated, etc. The database is responsible for setting create/modify timestamps, upon a successful save, to the Group. The method commits the results of the delete to persistent storage.

Parameters:

group - the Group to save

modifier - the user who saved the Group

Throws:

WikiSecurityException - if the Group could not be saved successfully

groups

Group[] groups()
        throws WikiSecurityException

Returns all wiki groups that are stored in the GroupDatabase as an array of Group objects. If the database does not contain any groups, this method will return a zero-length array. This method causes back-end storage to load the entire set of group; thus, it should be called infrequently (e.g., at initialization time). Note that this method should use the protected constructor Group.Group(String, String) rather than the various "parse" methods (GroupManager.parseGroup(String, String, boolean)) to construct the group. This is so as not to flood GroupManager's event queue with spurious events.

Returns:

the wiki groups

Throws:

WikiSecurityException - if the groups cannot be returned by the back-end