class.ilShopMetaDataSearch.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2008 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 'Services/Search/classes/class.ilAbstractSearch.php';

class ilShopMetaDataSearch extends ilAbstractSearch
{
        public $mode = '';

        /*
         * instance of query parser
         */
        public $query_parser = null;

        public $db = null;
        
        private $filter_shop_topic_id = 0;

        public function __construct($qp_obj)
        {
                parent::__construct($qp_obj);
        }
        
        public function setCustomSearchResultObject($a_search_result_obect)
        {
                $this->search_result = $a_search_result_obect;
        }       
        
        public function setFilterShopTopicId($a_topic_id)
        {
                $this->filter_shop_topic_id = $a_topic_id;
        }       
        public function getFilterShopTopicId()
        {
                return $this->filter_shop_topic_id;
        }

        public function setMode($a_mode)
        {
                $this->mode = $a_mode;
        }
        public function getMode()
        {
                return $this->mode;
        }       

        public function performSearch()
        {
                switch($this->getMode())
                {
                        case 'keyword':
                                return $this->__searchKeywords();

                        case 'contribute':
                                return $this->__searchContribute();

                        case 'title':
                                return $this->__searchTitles();

                        case 'description':
                                return $this->__searchDescriptions();

                        default:
                                echo __METHOD__.' no mode given';
                                return false;
                }
        }
        
        private function __createInStatement()
        {
                if(!$this->getFilter())
                {
                        return '';
                }
                else
                {
                        return ' AND ' . $this->db->in('obj_type', $this->getFilter(), false, 'text');
                }
        }
        
        private function __searchContribute()
        {
                $types = array();
                $values = array();
                
                $this->setFields(array('entity'));

                $in = $this->__createInStatement();
                $where = $this->__createContributeWhereCondition();
                $locate = $this->__createLocateString();
                
                $query = "SELECT object_reference.ref_id,rbac_id,il_meta_entity.obj_id,obj_type ".$locate."                               
                                  FROM payment_objects 
                                  INNER JOIN object_reference ON object_reference.ref_id = payment_objects.ref_id
                                  INNER JOIN il_meta_entity ON il_meta_entity.obj_id = object_reference.obj_id ";
                
                $query .= $where['query'];
                $types = array_merge($types, $where['types']);
                $values = array_merge($values, $where['values']);
                $query .= $in;  
                
                $query .= " GROUP BY object_reference.ref_id,il_meta_entity.obj_id,rbac_id,obj_type,il_meta_entity.entity ";

                $statement = $this->db->queryf(
                        $query,
                        $types,
                        $values
                );

                while($row = $statement->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $this->search_result->addEntry($row->ref_id,$row->obj_type,$this->__prepareFound($row),$row->obj_id);
                }

                return $this->search_result;
        }

        private function __searchKeywords()
        {
                $types = array();
                $values = array();
                
                $this->setFields(array('keyword'));

                $in = $this->__createInStatement();
                $where = $this->__createKeywordWhereCondition();
                $locate = $this->__createLocateString();
                
                $query = "SELECT object_reference.ref_id,rbac_id,il_meta_keyword.obj_id,obj_type ".$locate."                              
                                  FROM payment_objects 
                                  INNER JOIN object_reference ON object_reference.ref_id = payment_objects.ref_id
                                  INNER JOIN il_meta_keyword ON il_meta_keyword.obj_id = object_reference.obj_id ";
                
                $query .= $where['query'];
                $types = array_merge($types, $where['types']);
                $values = array_merge($values, $where['values']);
                $query .= $in;
                
                $query .= " GROUP BY object_reference.ref_id,il_meta_keyword.obj_id,rbac_id,obj_type,il_meta_keyword.keyword ";

                $statement = $this->db->queryf(
                        $query,
                        $types,
                        $values
                );

                while($row = $statement->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $this->search_result->addEntry($row->ref_id,$row->obj_type,$this->__prepareFound($row),$row->obj_id);
                }

                return $this->search_result;
        }
        
        private function __searchTitles()
        {
                $types = array();
                $values = array();
                
                $this->setFields(array('title'));

                $in = $this->__createInStatement();
                $where = $this->__createTitleWhereCondition();
                $locate = $this->__createLocateString();
                
                $query = "SELECT object_reference.ref_id,rbac_id,il_meta_general.obj_id,obj_type ".$locate."                              
                                  FROM payment_objects 
                                  INNER JOIN object_reference ON object_reference.ref_id = payment_objects.ref_id
                                  INNER JOIN il_meta_general ON il_meta_general.obj_id = object_reference.obj_id ";
                
                $query .= $where['query'];
                $types = array_merge($types, $where['types']);
                $values = array_merge($values, $where['values']);
                $query .= $in;          
                
                $query .= " GROUP BY object_reference.ref_id,il_meta_general.obj_id,rbac_id,obj_type,il_meta_general.title ";

                $statement = $this->db->queryf(
                        $query,
                        $types,
                        $values
                );
                
                while($row = $statement->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $this->search_result->addEntry($row->ref_id,$row->obj_type,$this->__prepareFound($row),$row->obj_id);
                }

                return $this->search_result;
        }               
        
        private function __searchDescriptions()
        {
                $types = array();
                $values = array();
                
                $this->setFields(array('description'));

                $in = $this->__createInStatement();
                $where = $this->__createDescriptionWhereCondition();
                $locate = $this->__createLocateString();
                
                $query = "SELECT object_reference.ref_id,rbac_id,il_meta_description.obj_id,obj_type ".$locate."                                  
                                  FROM payment_objects 
                                  INNER JOIN object_reference ON object_reference.ref_id = payment_objects.ref_id
                                  INNER JOIN il_meta_description ON il_meta_description.obj_id = object_reference.obj_id ";
                
                $query .= $where['query'];
                $types = array_merge($types, $where['types']);
                $values = array_merge($values, $where['values']);
                $query .= $in;
                
                $query .= " GROUP BY object_reference.ref_id,il_meta_description.obj_id,rbac_id,obj_type,il_meta_description.description ";

                $statement = $this->db->queryf(
                        $query,
                        $types,
                        $values
                );
                
                while($row = $statement->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $this->search_result->addEntry($row->ref_id,$row->obj_type,$this->__prepareFound($row),$row->obj_id);
                }

                return $this->search_result;
        }       
        
        public function __createLocateString()
        {
                global $ilDB;
                
                if($this->query_parser->getCombination() == 'or')
                {
                        return '';
                }
                
                if(!strlen($this->query_parser->getQueryString()))
                {
                        return '';
                }
                
                $locate = '';
                
                if(count($this->fields) > 1)
                {
                        $tmp_fields = array();
                        foreach($this->fields as $field)
                        {
                                $tmp_fields[] = array($field,'text');
                        }
                        $complete_str = $ilDB->concat($tmp_fields);
                }
                else
                {
                        $complete_str = $this->fields[0];
                }

                $counter = 0;
                foreach($this->query_parser->getQuotedWords() as $word)
                {
                        $locate .= ',';
                        $locate .= $ilDB->locate($ilDB->quote($word, 'text'), $complete_str, 1);
                        $locate .= (' found'.$counter++);
                        $locate .= ' ';
                }
                
                return $locate;
        }

        public function __prepareFound(&$row)
        {
                if($this->query_parser->getCombination() == 'or')
                {
                        return array();
                }
                
                if(!strlen($this->query_parser->getQueryString()))
                {
                        return array();
                }
                
                $counter = 0;
                foreach($this->query_parser->getQuotedWords() as $word)
                {
                        $res_found = 'found'.$counter++;
                        $found[] = $row->$res_found;
                }
                return $found ? $found : array();
        }       
}
?>