/**
* Remove an Agent member or a Group from this Group. If the Agent or Group
* is not in this group no action is taken and no exception is thrown.
*
* @param object Agent $memberOrGroup
*
* @throws object AgentException An exception with one of the
* following messages defined in org.osid.agent.AgentException may
* be thrown: {@link
* org.osid.agent.AgentException#OPERATION_FAILED
* OPERATION_FAILED}, {@link
* org.osid.agent.AgentException#PERMISSION_DENIED
* PERMISSION_DENIED}, {@link
* org.osid.agent.AgentException#CONFIGURATION_ERROR
* CONFIGURATION_ERROR}, {@link
* org.osid.agent.AgentException#UNIMPLEMENTED UNIMPLEMENTED},
* {@link org.osid.agent.AgentException#UNKNOWN_ID UNKNOWN_ID},
* {@link org.osid.agent.AgentException#NULL_ARGUMENT
* NULL_ARGUMENT}
*
* @access public
*/
function remove(Agent $memberOrGroup)
{
throwError(new Error(AgentException::PERMISSION_DENIED(), "UsersGroup", true));
}
/**
* Delete the Group with the specified unique Id.
*
* @param object Id $id
*
* @throws object AgentException An exception with one of the
* following messages defined in org.osid.agent.AgentException may
* be thrown: {@link
* org.osid.agent.AgentException#OPERATION_FAILED
* OPERATION_FAILED}, {@link
* org.osid.agent.AgentException#PERMISSION_DENIED
* PERMISSION_DENIED}, {@link
* org.osid.agent.AgentException#CONFIGURATION_ERROR
* CONFIGURATION_ERROR}, {@link
* org.osid.agent.AgentException#UNIMPLEMENTED UNIMPLEMENTED},
* {@link org.osid.agent.AgentException#NULL_ARGUMENT
* NULL_ARGUMENT}, {@link org.osid.agent.AgentException#UNKNOWN_ID
* UNKNOWN_ID}
*
* @access public
*/
function deleteGroup(Id $id)
{
//remove the properties of the agent from the database
$propertyManager = Services::getService("Property");
$propertyManager->deleteAllProperties($id->getIdString());
// Get the node for the agent
$hierarchyManager = Services::getService("Hierarchy");
$hierarchy = $hierarchyManager->getHierarchy($this->_hierarchyId);
if (!$hierarchy->nodeExists($id)) {
throwError(new Error(AgentException::PERMISSION_DENIED(), "GroupManager", true));
}
$hierarchy->deleteNode($id);
// update our cache for isGroup
if (isset($this->_groupTreeIds) && is_array($this->_groupTreeIds)) {
unset($this->_groupTreeIds[$id->getIdString()]);
}
}
