mirror of
https://github.com/Combodo/iTop.git
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278 lines
7.4 KiB
PHP
278 lines
7.4 KiB
PHP
<?php
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// Copyright (C) 2010-2021 Combodo SARL
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//
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// This file is part of iTop.
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//
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// iTop is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// iTop is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with iTop. If not, see <http://www.gnu.org/licenses/>
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/**
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* Store and retrieve user's preferences (i.e persistent per user settings)
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*
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* @copyright Copyright (C) 2010-2021 Combodo SARL
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* @license http://opensource.org/licenses/AGPL-3.0
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*/
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require_once(APPROOT.'/core/dbobject.class.php');
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require_once(APPROOT.'/core/userrights.class.inc.php');
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/**
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* This class is used to store, in a persistent manner, user related settings (preferences)
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* For each user, one record in the database will be created, making their preferences permanent and storing a list
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* of properties (pairs of name/value strings)
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* This overcomes some limitations of cookies: limited number of cookies, maximum size, depends on the browser, etc..
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* This class is used in conjunction with the GetUserPreferences/SetUserPreferences javascript functions (utils.js)
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*/
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class appUserPreferences extends DBObject
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{
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private static $oUserPrefs = null; // Local cache
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/**
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* Get the value of the given property/preference
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* If not set, the default value will be returned
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*
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* @param string $sCode Code/Name of the property to set
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* @param mixed $defaultValue The default value
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*
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* @return mixed The value of the property for the current user
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* @throws \CoreException
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* @throws \CoreUnexpectedValue
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* @throws \MySQLException
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*/
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public static function GetPref($sCode, $defaultValue)
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{
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if (self::$oUserPrefs == null)
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{
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self::Load();
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}
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$aPrefs = self::$oUserPrefs->Get('preferences');
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if (array_key_exists($sCode, $aPrefs))
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{
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return $aPrefs[$sCode];
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}
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else
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{
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return $defaultValue;
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}
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}
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/**
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* Set the value for a given preference, and stores it into the database
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*
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* @param string $sCode Code/Name of the property/preference to set
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* @param mixed $value Value to set
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*
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* @return void
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* @throws \CoreException
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* @throws \CoreUnexpectedValue
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* @throws \MySQLException
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*/
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public static function SetPref($sCode, $value)
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{
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if (self::$oUserPrefs == null)
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{
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self::Load();
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}
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$aPrefs = self::$oUserPrefs->Get('preferences');
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if (array_key_exists($sCode, $aPrefs) && ($aPrefs[$sCode] === $value))
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{
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// Do not write it again
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}
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else
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{
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$aPrefs[$sCode] = $value;
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self::$oUserPrefs->Set('preferences', $aPrefs);
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self::Save();
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}
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}
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/**
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* Clears the value for a given preference (or list of preferences that matches a pattern), and updates the database
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*
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* @param string $sCodeOrPattern Code/Pattern of the properties/preferences to reset
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* @param boolean $bPattern Whether or not the supplied code is a PCRE pattern
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*
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* @return void
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* @throws \CoreException
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* @throws \CoreUnexpectedValue
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* @throws \MySQLException
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*/
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public static function UnsetPref($sCodeOrPattern, $bPattern = false)
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{
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if (self::$oUserPrefs == null)
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{
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self::Load();
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}
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$aPrefs = self::$oUserPrefs->Get('preferences');
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if ($bPattern)
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{
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// the supplied code is a pattern, clear all preferences that match
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foreach($aPrefs as $sKey => $void)
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{
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if (preg_match($sCodeOrPattern, $sKey))
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{
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unset($aPrefs[$sKey]);
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}
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}
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self::$oUserPrefs->Set('preferences', $aPrefs);
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}
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else
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{
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unset($aPrefs[$sCodeOrPattern]);
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self::$oUserPrefs->Set('preferences', $aPrefs);
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}
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// Save only if needed
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if (self::$oUserPrefs->IsModified())
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{
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self::Save();
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}
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}
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/**
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* Call this function to get all the preferences for the user, packed as a JSON object
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*
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* @return string JSON representation of the preferences
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* @throws \CoreException
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* @throws \CoreUnexpectedValue
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* @throws \MySQLException
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*/
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public static function GetAsJSON()
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{
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if (self::$oUserPrefs == null)
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{
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self::Load();
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}
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$aPrefs = self::$oUserPrefs->Get('preferences');
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return json_encode($aPrefs);
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}
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/**
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* Call this function if the user has changed (like when doing a logoff...)
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*
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* @return void
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*/
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public static function ResetPreferences()
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{
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self::$oUserPrefs = null;
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}
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/**
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* Call this function to ERASE all the preferences from the current user
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*
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* @return void
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*/
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public static function ClearPreferences()
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{
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self::$oUserPrefs = null;
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}
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/**
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* Save preferences in the DB
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*
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* @return void;
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*/
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protected static function Save()
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{
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if (self::$oUserPrefs != null)
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{
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if (self::$oUserPrefs->IsModified())
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{
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utils::PushArchiveMode(false);
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self::$oUserPrefs->DBUpdate();
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utils::PopArchiveMode();
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}
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}
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}
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/**
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* Loads the preferences for the current user, creating the record in the database
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* if needed
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*
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* @return void;
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* @throws \CoreException
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* @throws \CoreUnexpectedValue
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* @throws \MySQLException
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*/
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protected static function Load()
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{
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if (self::$oUserPrefs != null) return;
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$oSearch = new DBObjectSearch('appUserPreferences');
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$oSearch->AddCondition('userid', UserRights::GetUserId(), '=');
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$oSet = new DBObjectSet($oSearch);
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$oObj = $oSet->Fetch();
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if ($oObj == null)
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{
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// No prefs (yet) for this user, create the object
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$oObj = new appUserPreferences();
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$oObj->Set('userid', UserRights::GetUserId());
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$oObj->Set('preferences', array()); // Default preferences: an empty array
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try
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{
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utils::PushArchiveMode(false);
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$oObj->DBInsert();
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utils::PopArchiveMode();
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}
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catch(Exception $e)
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{
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// Ignore errors
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}
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}
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self::$oUserPrefs = $oObj;
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}
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/**
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* @throws \CoreException
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*/
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public static function Init()
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{
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$aParams = array
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(
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"category" => "gui",
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"key_type" => "autoincrement",
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"name_attcode" => "userid",
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"state_attcode" => "",
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"reconc_keys" => array(),
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"db_table" => "priv_app_preferences",
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"db_key_field" => "id",
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"db_finalclass_field" => "",
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);
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MetaModel::Init_Params($aParams);
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MetaModel::Init_AddAttribute(new AttributeExternalKey("userid", array("targetclass"=>"User", "allowed_values"=>null, "sql"=>"userid", "is_null_allowed"=>false, "on_target_delete"=>DEL_AUTO, "depends_on"=>array())));
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MetaModel::Init_AddAttribute(new AttributePropertySet("preferences", array("allowed_values"=>null, "sql"=>"preferences", "default_value"=>null, "is_null_allowed"=>true, "depends_on"=>array())));
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}
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/**
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* Overloading this function here to secure a fix done right before the release
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* The real fix should be to implement this verb in DBObject
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*
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* @param \CMDBChange $oChange
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* @param bool|null $bSkipStrongSecurity
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* @param \DeletionPlan|null $oDeletionPlan
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*
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* @throws \ArchivedObjectException
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* @throws \CoreCannotSaveObjectException
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* @throws \CoreException
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* @throws \CoreUnexpectedValue
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* @throws \DeleteException
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* @throws \MySQLException
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* @throws \MySQLHasGoneAwayException
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* @throws \OQLException
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*/
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public function DBDeleteTracked(CMDBChange $oChange, $bSkipStrongSecurity = null, &$oDeletionPlan = null)
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{
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utils::PushArchiveMode(false);
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$this->DBDelete($oDeletionPlan);
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utils::PopArchiveMode();
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}
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}
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