class.ilMDRequirement.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2001 ILIAS open source, University of Cologne            |
        |                                                                             |
        | This program is free software; you can redistribute it and/or               |
        | modify it under the terms of the GNU General Public License                 |
        | as published by the Free Software Foundation; either version 2              |
        | of the License, or (at your option) any later version.                      |
        |                                                                             |
        | This program is distributed in the hope that it will be useful,             |
        | but WITHOUT ANY WARRANTY; without even the implied warranty of              |
        | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               |
        | GNU General Public License for more details.                                |
        |                                                                             |
        | You should have received a copy of the GNU General Public License           |
        | along with this program; if not, write to the Free Software                 |
        | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
        +-----------------------------------------------------------------------------+
*/


include_once 'class.ilMDBase.php';

class ilMDRequirement extends ilMDBase
{
        // SET/GET
        function setOrCompositeId($a_or_composite_id)
        {
                $this->or_composite_id = (int) $a_or_composite_id;
        }
        function getOrCompositeId()
        {
                return (int) $this->or_composite_id;
        }


        function setOperatingSystemName($a_val)
        {
                switch($a_val)
                {
                        case 'PC-DOS':
                        case 'MS-Windows':
                        case 'MacOS':
                        case 'Unix':
                        case 'Multi-OS':
                        case 'None':
                                $this->operating_system_name = $a_val;
                                return true;

                        default:
                                return false;
                }
        }
        function getOperatingSystemName()
        {
                return $this->operating_system_name;
        }
        function setOperatingSystemMinimumVersion($a_val)
        {
                $this->operating_system_minimum_version = $a_val;
        }
        function getOperatingSystemMinimumVersion()
        {
                return $this->operating_system_minimum_version;
        }
        function setOperatingSystemMaximumVersion($a_val)
        {
                $this->operating_system_maximum_version = $a_val;
        }
        function getOperatingSystemMaximumVersion()
        {
                return $this->operating_system_maximum_version;
        }
        function setBrowserName($a_val)
        {
                switch($a_val)
                {
                        case 'Any':
                        case 'NetscapeCommunicator':
                        case 'MS-InternetExplorer':
                        case 'Opera':
                        case 'Amaya':
                        case 'Mozilla':
                                $this->browser_name = $a_val;
                                return true;

                        default:
                                return false;
                }
        }
        function getBrowserName()
        {
                return $this->browser_name;
        }
        function setBrowserMinimumVersion($a_val)
        {
                $this->browser_minimum_version = $a_val;
        }
        function getBrowserMinimumVersion()
        {
                return $this->browser_minimum_version;
        }
        function setBrowserMaximumVersion($a_val)
        {
                $this->browser_maximum_version = $a_val;
        }
        function getBrowserMaximumVersion()
        {
                return $this->browser_maximum_version;
        }

        function save()
        {
                global $ilDB;
                
                $fields = $this->__getFields();
                $fields['meta_requirement_id'] = array('integer',$next_id = $ilDB->nextId('il_meta_requirement'));
                
                if($this->db->insert('il_meta_requirement',$fields))
                {
                        $this->setMetaId($next_id);
                        return $this->getMetaId();
                }
                return false;
        }

        function update()
        {
                global $ilDB;
                
                if($this->getMetaId())
                {
                        if($this->db->update('il_meta_requirement',
                                                                        $this->__getFields(),
                                                                        array("meta_requirement_id" => array('integer',$this->getMetaId()))))
                        {
                                return true;
                        }
                }
                return false;
        }

        function delete()
        {
                global $ilDB;
                
                if($this->getMetaId())
                {
                        $query = "DELETE FROM il_meta_requirement ".
                                "WHERE meta_requirement_id = ".$ilDB->quote($this->getMetaId() ,'integer');
                        $res = $ilDB->manipulate($query);
                        return true;
                }
                return false;
        }
                        

        function __getFields()
        {
                return array('rbac_id'  => array('integer',$this->getRBACId()),
                                         'obj_id'       => array('integer',$this->getObjId()),
                                         'obj_type'     => array('text',$this->getObjType()),
                                         'parent_type' => array('text',$this->getParentType()),
                                         'parent_id' => array('integer',$this->getParentId()),
                                         'operating_system_name'        => array('text',$this->getOperatingSystemName()),
                                         'os_min_version' => array('text',$this->getOperatingSystemMinimumVersion()),
                                         'os_max_version' => array('text',$this->getOperatingSystemMaximumVersion()),
                                         'browser_name' => array('text',$this->getBrowserName()),
                                         'browser_minimum_version' => array('text',$this->getBrowserMinimumVersion()),
                                         'browser_maximum_version' => array('text',$this->getBrowserMaximumVersion()),
                                         'or_composite_id' => array('integer',$this->getOrCompositeId()));
        }

        function read()
        {
                global $ilDB;
                
                include_once 'Services/MetaData/classes/class.ilMDLanguageItem.php';

                if($this->getMetaId())
                {
                        $query = "SELECT * FROM il_meta_requirement ".
                                "WHERE meta_requirement_id = ".$ilDB->quote($this->getMetaId() ,'integer');

                        $res = $this->db->query($query);
                        while($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT))
                        {
                                $this->setRBACId($row->rbac_id);
                                $this->setObjId($row->obj_id);
                                $this->setObjType($row->obj_type);
                                $this->setParentId($row->parent_id);
                                $this->setParentType($row->parent_type);
                                $this->setOperatingSystemName($row->operating_system_name);
                                $this->setOperatingSystemMinimumVersion($row->os_min_version);
                                $this->setOperatingSystemMaximumVersion($row->os_max_version);
                                $this->setBrowserName($row->browser_name);
                                $this->setBrowserMinimumVersion($row->browser_minimum_version);
                                $this->setBrowserMaximumVersion($row->browser_maximum_version);
                                $this->setOrCompositeId($row->or_composite_id);
                        }
                }
                return true;
        }
                                
        /*
         * XML Export of all meta data
         * @param object (xml writer) see class.ilMD2XML.php
         * 
         */
        function toXML(&$writer)
        {
                $writer->xmlStartTag('Requirement');
                $writer->xmlStartTag('Type');
                        
                if(strlen($this->getOperatingSystemName()))
                {
                        $writer->xmlElement('OperatingSystem',array('Name' => $this->getOperatingSystemName()
                                                                                                                ? $this->getOperatingSystemName()
                                                                                                                : 'None',
                                                                                                                'MinimumVersion' => $this->getOperatingSystemMinimumVersion(),
                                                                                                                'MaximumVersion' => $this->getOperatingSystemMaximumVersion()));
                }
                if(strlen($this->getBrowserName()))
                {
                        $writer->xmlElement('Browser',array('Name' => $this->getBrowserName()
                                                                                                ? $this->getBrowserName()
                                                                                                : 'Any',
                                                                                                'MinimumVersion' => $this->getBrowserMinimumVersion(),
                                                                                                'MaximumVersion' => $this->getBrowserMaximumVersion()));
                }
                $writer->xmlEndTag('Type');
                $writer->xmlEndTag('Requirement');
                
        }


        // STATIC
        static function _getIds($a_rbac_id,$a_obj_id,$a_parent_id,$a_parent_type,$a_or_composite_id = 0)
        {
                global $ilDB;

                $query = "SELECT meta_requirement_id FROM il_meta_requirement ".
                        "WHERE rbac_id = ".$ilDB->quote($a_rbac_id ,'integer')." ".
                        "AND obj_id = ".$ilDB->quote($a_obj_id ,'integer')." ".
                        "AND parent_id = ".$ilDB->quote($a_parent_id ,'integer')." ".
                        "AND parent_type = ".$ilDB->quote($a_parent_type ,'text')." ".
                        "AND or_composite_id = ".$ilDB->quote($a_or_composite_id ,'integer');

                $res = $ilDB->query($query);
                while($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT))
                {
                        $ids[] = $row->meta_requirement_id;
                }
                return $ids ? $ids : array();
        }
}
?>