org.olat.core.util.bulk : Package which provides the abstract class BulkAction . Extend it when you have to handle a list of users with the same action. To understand how it's implemented have a look at the BulkAssessmentWizardController

org.olat.core.util.cache : Package which provides some implementation of caches used by the DB abstraction layer, the group management and the base security package. See the section on caches for details.

org.olat.core.util.component : Package which provides visitors and traversers

org.olat.core.util.controller : Provides everywhere useful controllers

org.olat.core.util.event : Package which provides a simple event handling system, described in more detail in the section on events.

org.olat.core.util.i18n : This package handles all i18n within OLAT. See the section on i18n for details.

org.olat.core.util.locks : Package which provides a manager to handle locks. A workflow may set/remove locks to prevent multiple users from accessing some functionality within OLAT. Locks are persisted accross sessions.

org.olat.core.util.mail : Contains Emailer , a class providing basic email functionality.

org.olat.core.util.memento : Provides the interface for the memento pattern

org.olat.core.util.nodes : Provides classes to represent a simple node structure and a helper class NodeHelper to manipulate such structures.

org.olat.core.util.prefs : Package whcih provides structures persistence classes for handling various persistent preferences.

org.olat.core.util.radeox : Package extending the Radeox wiki markup.

org.olat.core.util.rss : Helper classes for handling RSS data.

org.olat.core.util.traversal : Package providing helpder classes for traversing structures.

org.olat.util.tree : Package providing helpder classess to work on tree structures.

org.olat.util.vfs : Implementation of the virtual filesystem. See section on virtual filesystem for details.

org.olat.core.util.xml : Provides helper functionality to easy handle xml stuff