class.ilLuceneAdvancedQueryParser.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2006 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/Lucene/class.ilLuceneQueryParser.php';
include_once './Services/Search/classes/Lucene/class.ilLuceneAdvancedSearchFields.php';
 
class ilLuceneAdvancedQueryParser extends ilLuceneQueryParser
{
        protected $field_definition = null;
        protected $query_data = array();
 
        public function __construct($a_query_data)
        {
                parent::__construct('');
                
                $this->field_definition = ilLuceneAdvancedSearchFields::getInstance();
                $this->query_data = $a_query_data;
        }
        
        public function getFieldDefinition()
        {
                return $this->field_definition;
        }
        
        public function getQueryData()
        {
                return $this->query_data ? $this->query_data : array();
        }
        
        public function parse()
        {
                foreach((array) $this->getQueryData() as $field => $query)
                {
                        if(!is_array($query) && !trim($query))
                        {
                                continue;
                        }
                        $parsed = $this->getFieldDefinition()->parseFieldQuery($field,$query);
                        if(strlen($parsed))
                        {
                                $this->parsed_query .= " +(";
                                $this->parsed_query .= $parsed;
                                $this->parsed_query .= ") ";
                        }
                }               
                return true;
        }       
}
?>