Services/MetaData/classes/class.ilMD.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 ilMD extends ilMDBase
{
        /*
         * meta elements
         *
         */
         
        /*
         * constructor
         *
         * @param       $a_rbac_id      int             object id (NOT ref_id!) of rbac object (e.g for page objects
         *                                                              the obj_id of the content object; for media objects this
         *                                                              is set to 0, because their object id are not assigned to ref ids)
         * @param       $a_obj_id       int             object id (e.g for structure objects the obj_id of the structure object)
         * @param       $a_type         string  type of the object (e.g st,pg,crs ...)
         */
        function ilMD($a_rbac_id,$a_obj_id,$a_type)
        {
                parent::ilMDBase($a_rbac_id,$a_obj_id,$a_type);
        }

        function &getGeneral()
        {
                include_once 'Services/MetaData/classes/class.ilMDGeneral.php';

                if($id = ilMDGeneral::_getId($this->getRBACId(),$this->getObjId()))
                {
                        $gen =& new ilMDGeneral();
                        $gen->setMetaId($id);

                        return $gen;
                }
                return false;
        }
        function &addGeneral()
        {
                include_once 'Services/MetaData/classes/class.ilMDGeneral.php';

                $gen =& new ilMDGeneral($this->getRBACId(),$this->getObjId(),$this->getObjType());

                return $gen;
        }


        function &getLifecycle()
        {
                include_once 'Services/MetaData/classes/class.ilMDLifecycle.php';
                
                if($id = ilMDLifecycle::_getId($this->getRBACId(),$this->getObjId()))
                {
                        $lif =& new ilMDLifecycle();
                        $lif->setMetaId($id);

                        return $lif;
                }
                return false;
        }
        function &addLifecycle()
        {
                include_once 'Services/MetaData/classes/class.ilMDLifecycle.php';

                $lif =& new ilMDLifecycle($this->getRBACId(),$this->getObjId(),$this->getObjType());

                return $lif;
        }

        function &getMetaMetadata()
        {
                include_once 'Services/MetaData/classes/class.ilMDMetaMetadata.php';

                if($id = ilMDMetaMetadata::_getId($this->getRBACId(),$this->getObjId()))
                {
                        $met =& new ilMDMetaMetadata();
                        $met->setMetaId($id);
                        
                        return $met;
                }
                return false;
        }
        function &addMetaMetadata()
        {
                include_once 'Services/MetaData/classes/class.ilMDMetaMetadata.php';

                $met =& new ilMDMetaMetadata($this->getRBACId(),$this->getObjId(),$this->getObjType());
                
                return $met;
        }

        function &getTechnical()
        {
                include_once 'Services/MetaData/classes/class.ilMDTechnical.php';

                if($id = ilMDTechnical::_getId($this->getRBACId(),$this->getObjId()))
                {
                        $tec =& new ilMDTechnical();
                        $tec->setMetaId($id);
                        
                        return $tec;
                }
                return false;
        }
        function &addTechnical()
        {
                include_once 'Services/MetaData/classes/class.ilMDTechnical.php';

                $tec =& new ilMDTechnical($this->getRBACId(),$this->getObjId(),$this->getObjType());

                return $tec;
        }

        function &getEducational()
        {
                include_once 'Services/MetaData/classes/class.ilMDEducational.php';

                if($id = ilMDEducational::_getId($this->getRBACId(),$this->getObjId()))
                {
                        $edu =& new ilMDEducational();
                        $edu->setMetaId($id);
                        
                        return $edu;
                }
                return false;
        }
        function &addEducational()
        {
                include_once 'Services/MetaData/classes/class.ilMDEducational.php';

                $edu =& new ilMDEducational($this->getRBACId(),$this->getObjId(),$this->getObjType());

                return $edu;
        }
        function &getRights()
        {
                include_once 'Services/MetaData/classes/class.ilMDRights.php';

                if($id = ilMDRights::_getId($this->getRBACId(),$this->getObjId()))
                {
                        $rig =& new ilMDRights();
                        $rig->setMetaId($id);
                        
                        return $rig;
                }
                return false;
        }
        function &addRights()
        {
                include_once 'Services/MetaData/classes/class.ilMDRights.php';

                $rig =& new ilMDRights($this->getRBACId(),$this->getObjId(),$this->getObjType());
                
                return $rig;
        }

        function &getRelationIds()
        {
                include_once 'Services/MetaData/classes/class.ilMDRelation.php';

                return ilMDRelation::_getIds($this->getRBACId(),$this->getObjId());
        }
        function &getRelation($a_relation_id)
        {
                include_once 'Services/MetaData/classes/class.ilMDRelation.php';

                if(!$a_relation_id)
                {
                        return false;
                }

                $rel =& new ilMDRelation();
                $rel->setMetaId($a_relation_id);
                
                return $rel;
        }
        function &addRelation()
        {
                include_once 'Services/MetaData/classes/class.ilMDRelation.php';

                $rel =& new ilMDRelation($this->getRBACId(),$this->getObjId(),$this->getObjType());
                
                return $rel;
        }


        function &getAnnotationIds()
        {
                include_once 'Services/MetaData/classes/class.ilMDAnnotation.php';

                return ilMDAnnotation::_getIds($this->getRBACId(),$this->getObjId());
        }
        function &getAnnotation($a_annotation_id)
        {
                if(!$a_annotation_id)
                {
                        return false;
                }
                include_once 'Services/MetaData/classes/class.ilMDAnnotation.php';

                $ann =& new ilMDAnnotation();
                $ann->setMetaId($a_annotation_id);

                return $ann;
        }
        function &addAnnotation()
        {
                include_once 'Services/MetaData/classes/class.ilMDAnnotation.php';
                
                $ann =& new ilMDAnnotation($this->getRBACId(),$this->getObjId(),$this->getObjType());

                return $ann;
        }

        function &getClassificationIds()
        {
                include_once 'Services/MetaData/classes/class.ilMDClassification.php';

                return ilMDClassification::_getIds($this->getRBACId(),$this->getObjId());
        }
        function &getClassification($a_classification_id)
        {
                if(!$a_classification_id)
                {
                        return false;
                }

                include_once 'Services/MetaData/classes/class.ilMDClassification.php';

                $cla =& new ilMDClassification();
                $cla->setMetaId($a_classification_id);

                return $cla;
        }
        function &addClassification()
        {
                include_once 'Services/MetaData/classes/class.ilMDClassification.php';

                $cla =& new ilMDClassification($this->getRBACId(),$this->getObjId(),$this->getObjType());

                return $cla;
        }

        /*
         * XML Export of all meta data
         * @param object (xml writer) see class.ilMD2XML.php
         * 
         */
        function toXML(&$writer)
        {
                $writer->xmlStartTag('MetaData');

                // General
                if(is_object($gen =& $this->getGeneral()))
                {
                        $gen->setExportMode($this->getExportMode());
                        $gen->toXML($writer);
                }
                else
                {
                        // Defaults
                        include_once 'Services/MetaData/classes/class.ilMDGeneral.php';
                        $gen = new ilMDGeneral($this->getRBACId(),$this->getObjId());
                        $gen->setExportMode($this->getExportMode());
                        $gen->toXML($writer);
                }
                        

                // Lifecycle
                if(is_object($lif =& $this->getLifecycle()))
                {
                        $lif->toXML($writer);
                }

                // Meta-Metadata
                if(is_object($met =& $this->getMetaMetadata()))
                {
                        $met->toXML($writer);
                }

                // Technical
                if(is_object($tec =& $this->getTechnical()))
                {
                        $tec->toXML($writer);
                }

                // Educational
                if(is_object($edu =& $this->getEducational()))
                {
                        $edu->toXML($writer);
                }

                // Rights
                if(is_object($rig =& $this->getRights()))
                {
                        $rig->toXML($writer);
                }

                // Relations
                foreach($this->getRelationIds() as $id)
                {
                        $rel =& $this->getRelation($id);
                        $rel->toXML($writer);
                }

                // Annotations
                foreach($this->getAnnotationIds() as $id)
                {
                        $ann =& $this->getAnnotation($id);
                        $ann->toXML($writer);
                }
                
                // Classification
                foreach($this->getClassificationIds() as $id)
                {
                        $cla =& $this->getClassification($id);
                        $cla->toXML($writer);
                }
                
                $writer->xmlEndTag('MetaData');
        }

        /*
         * Clone all meta data of an object
         * @param int rbac_id obj_id of rbac object
         * @param int obj_id obj_id of meta object
         * @param string type of meta object
         * @return object new cloned md object
         * 
         */
        function &cloneMD($a_rbac_id,$a_obj_id,$a_obj_type)
        {
                include_once 'Services/MetaData/classes/class.ilMD2XML.php';

                // this method makes an xml export of the original meta data set
                // and uses this xml string to clone the object
                $md2xml = new ilMD2XML($this->getRBACId(),$this->getObjId(),$this->getObjType());
                $md2xml->startExport();
                
                // Create copier instance. For pg objects one could instantiate a ilMDXMLPageCopier class
                switch($a_obj_type)
                {
                        default:
                                include_once 'Services/MetaData/classes/class.ilMDXMLCopier.php';
                                
                                $mdxmlcopier =& new ilMDXMLCopier($md2xml->getXML(),$a_rbac_id,$a_obj_id,$a_obj_type);
                                break;
                }
                $mdxmlcopier->startParsing();

                return $mdxmlcopier->getMDObject();
        }               

        function deleteAll()
        {
                $tables = array('il_meta_annotation',
                                                'il_meta_classification',
                                                'il_meta_contribute',
                                                'il_meta_description',
                                                'il_meta_educational',
                                                'il_meta_entity',
                                                'il_meta_format',
                                                'il_meta_general',
                                                'il_meta_identifier',
                                                'il_meta_identifier_',
                                                'il_meta_keyword',
                                                'il_meta_language',
                                                'il_meta_lifecycle',
                                                'il_meta_location',
                                                'il_meta_meta_data',
                                                'il_meta_relation',
                                                'il_meta_requirement',
                                                'il_meta_rights',
                                                'il_meta_taxon',
                                                'il_meta_taxon_path',
                                                'il_meta_technical',
                                                'il_meta_typical_age_range');

                foreach($tables as $table)
                {
                        $query = "DELETE FROM ".$table." ".
                                "WHERE rbac_id = '".$this->getRBACId()."' ".
                                "AND obj_id = '".$this->getObjId()."'";

                        $this->db->query($query);
                }
                
                return true;
        }

}
?>