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## org.jivesoftware.openfire.roster
Class RosterManager

    java.lang.Object
      org.jivesoftware.openfire.container.BasicModule
          org.jivesoftware.openfire.roster.RosterManager

All Implemented Interfaces:
  Module, GroupEventListener, UserEventListener

    public class RosterManager

extends BasicModule
implements GroupEventListener, UserEventListener

A simple service that allows components to retrieve a roster based solely on the ID of the owner. Users have convenience methods for obtaining a roster associated with the owner. However there are many components that need to retrieve the roster based solely on the generic ID owner key. This interface defines a service that can do that. This allows classes that generically manage resource for resource owners (such as presence updates) to generically offer their services without knowing or caring if the roster owner is a user, chatbot, etc.

Author:
  Iain Shigeoka

Constructor Summary
`RosterManager()`

Method Summary
`void` | `adminAdded(Group group, Map params)` An administrator was added to a group.
`void` | `adminRemoved(Group group, Map params)` An administrator was removed from a group.
`void` | `deleteRoster(org.xmpp.packet.JID user)` Removes the entire roster of a given user.
`Collection<Group>` | `getPublicSharedGroups()` Returns the list of shared groups whose visibility is public.
`Roster` | `getRoster(String username)` Returns the roster for the given username.
`static RosterItemProvider` | `getRosterItemProvider()`
`Collection<Group>` | `getSharedGroups(String username)` Returns a collection with all the groups that the user may include in his roster.
`void` | `groupCreated(Group group, Map params)` A group was created.
`void` | `groupDeleting(Group group, Map params)` A group is being deleted.
`void` | `groupModified(Group group, Map params)` A group's name, description, or an extended property was changed.
`void` | `initialize(XMPPServer server)` Initializes the basic module.
`boolean` | `isGroupVisible(Group group, org.xmpp.packet.JID user)` Returns true if a given group is visible to a given user.
`static boolean` | `isPublicSharedGroup(Group group)` Returns true if the specified Group may be seen by all users in the system.
`static boolean` | `isRosterServiceEnabled()` Returns true if the roster service is enabled.
`static boolean` | `isSharedGroup(Group group)` Returns true if the specified Group may be included in a user roster.
`void` | `memberAdded(Group group, Map params)` A member was added to a group.
`void` | `memberRemoved(Group group, Map params)` A member was removed from a group.
`void` | `start()` Starts the basic module.
`void` | `stop()` Stops the basic module.
`void` | `userCreated(User newUser, Map<String,Object> params)` A new user has been created so members of public shared groups need to have their rosters updated.
`void` | `userDeleting(User user, Map<String,Object> params)` A user is being deleted.
`void` | `userModified(User user, Map<String,Object> params)` A user's name, email, or an extended property was changed.

Methods inherited from class org.jivesoftware.openfire.container.BasicModule
`destroy, getName`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### RosterManager

    public RosterManager()

Method Detail

### isRosterServiceEnabled

    public static boolean isRosterServiceEnabled()

  Returns true if the roster service is enabled. When disabled it is not possible to retrieve users rosters or broadcast presence packets to roster contacts.

  Returns:
    true if the roster service is enabled.

### getRoster

    public Roster getRoster(String username)
                     throws UserNotFoundException

  Returns the roster for the given username.

  Parameters:
    `username` - the username to search for.
  Returns:
    the roster associated with the ID.
  Throws:
    `UserNotFoundException` - if the ID does not correspond to a known entity on the server.

### deleteRoster

    public void deleteRoster(org.xmpp.packet.JID user)

  Removes the entire roster of a given user. This is necessary when a user account is being deleted from the server.

  Parameters:
    `user` - the user.

### getSharedGroups

    public Collection<Group> getSharedGroups(String username)

  Returns a collection with all the groups that the user may include in his roster. The following criteria will be used to select the groups: 1) Groups that are configured so that everybody can include in his roster, 2) Groups that are configured so that its users may include the group in their rosters and the user is a group user of the group and 3) User belongs to a Group that may see a Group that whose members may include the Group in their rosters.

  Parameters:
    `username` - the username of the user to return his shared groups.
  Returns:
    a collection with all the groups that the user may include in his roster.

### getPublicSharedGroups

    public Collection<Group> getPublicSharedGroups()

  Returns the list of shared groups whose visibility is public.

  Returns:
    the list of shared groups whose visibility is public.

### groupCreated

    public void groupCreated(Group group,
                             Map params)

  Description copied from interface: `GroupEventListener`
  A group was created.

  Specified by:
    `groupCreated` in interface `GroupEventListener`
  Parameters:
    `group` - the group.
    `params` - event parameters.

### groupDeleting

    public void groupDeleting(Group group,
                              Map params)

  Description copied from interface: `GroupEventListener`
  A group is being deleted.

  Specified by:
    `groupDeleting` in interface `GroupEventListener`
  Parameters:
    `group` - the group.
    `params` - event parameters.

### groupModified

    public void groupModified(Group group,
                              Map params)

  Description copied from interface: `GroupEventListener`
  A group's name, description, or an extended property was changed.

  Specified by:
    `groupModified` in interface `GroupEventListener`
  Parameters:
    `group` - the group.
    `params` - event parameters.

### initialize

    public void initialize(XMPPServer server)

  Description copied from class: `BasicModule`

  Initializes the basic module.

  Inheriting classes that choose to override this method MUST call this initialize() method before accessing BasicModule resources.

  Specified by:
    `initialize` in interface `Module`
  Overrides:
    `initialize` in class `BasicModule`
  Parameters:
    `server` - the server hosting this module.

### isSharedGroup

    public static boolean isSharedGroup(Group group)

  Returns true if the specified Group may be included in a user roster. The decision is made based on the group properties that are configurable through the Admin Console.

  Parameters:
    `group` - the group to check if it may be considered a shared group.
  Returns:
    true if the specified Group may be included in a user roster.

### isPublicSharedGroup

    public static boolean isPublicSharedGroup(Group group)

  Returns true if the specified Group may be seen by all users in the system. The decision is made based on the group properties that are configurable through the Admin Console.

  Parameters:
    `group` - the group to check if it may be seen by all users in the system.
  Returns:
    true if the specified Group may be seen by all users in the system.

### memberAdded

    public void memberAdded(Group group,
                            Map params)

  Description copied from interface: `GroupEventListener`
  A member was added to a group.

  Specified by:
    `memberAdded` in interface `GroupEventListener`
  Parameters:
    `group` - the group.
    `params` - event parameters.

### memberRemoved

    public void memberRemoved(Group group,
                              Map params)

  Description copied from interface: `GroupEventListener`
  A member was removed from a group.

  Specified by:
    `memberRemoved` in interface `GroupEventListener`
  Parameters:
    `group` - the group.
    `params` - event parameters.

### adminAdded

    public void adminAdded(Group group,
                           Map params)

  Description copied from interface: `GroupEventListener`
  An administrator was added to a group.

  Specified by:
    `adminAdded` in interface `GroupEventListener`
  Parameters:
    `group` - the group.
    `params` - event parameters.

### adminRemoved

    public void adminRemoved(Group group,
                             Map params)

  Description copied from interface: `GroupEventListener`
  An administrator was removed from a group.

  Specified by:
    `adminRemoved` in interface `GroupEventListener`
  Parameters:
    `group` - the group.
    `params` - event parameters.

### userCreated

    public void userCreated(User newUser,
                            Map<String,Object> params)

  A new user has been created so members of public shared groups need to have their rosters updated. Members of public shared groups need to have a roster item with subscription FROM for the new user since the new user can see them.

  Specified by:
    `userCreated` in interface `UserEventListener`
  Parameters:
    `newUser` - the newly created user.
    `params` - event parameters.

### userDeleting

    public void userDeleting(User user,
                             Map<String,Object> params)

  Description copied from interface: `UserEventListener`
  A user is being deleted.

  Specified by:
    `userDeleting` in interface `UserEventListener`
  Parameters:
    `user` - the user.
    `params` - event parameters.

### userModified

    public void userModified(User user,
                             Map<String,Object> params)

  Description copied from interface: `UserEventListener`
  A user's name, email, or an extended property was changed.

  Specified by:
    `userModified` in interface `UserEventListener`
  Parameters:
    `user` - the user.
    `params` - event parameters.

### isGroupVisible

    public boolean isGroupVisible(Group group,
                                  org.xmpp.packet.JID user)

  Returns true if a given group is visible to a given user. That means, if the user can see the group in his roster.

  Parameters:
    `group` - the group to check if the user can see.
    `user` - the JID of the user to check if he may see the group.
  Returns:
    true if a given group is visible to a given user.

### start

    public void start()
               throws IllegalStateException

  Description copied from class: `BasicModule`

  Starts the basic module.

  Inheriting classes that choose to override this method MUST call this start() method before accessing BasicModule resources.

  Specified by:
    `start` in interface `Module`
  Overrides:
    `start` in class `BasicModule`
  Throws:
    `IllegalStateException` - If start is called before initialize successfully returns

### stop

    public void stop()

  Description copied from class: `BasicModule`

  Stops the basic module.

  Inheriting classes that choose to override this method MUST call this stop() method before accessing BasicModule resources.

  Specified by:
    `stop` in interface `Module`
  Overrides:
    `stop` in class `BasicModule`

### getRosterItemProvider

    public static RosterItemProvider getRosterItemProvider()

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