class.ilLuceneSearchResult.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. |
        +-----------------------------------------------------------------------------+
*/
 
class ilLuceneSearchResult implements Iterator
{
        private $listener;
        private $position = 0;
        
        private $limit = 0;
        private $total_hits = 0;
        private $max_score = 0;
        
        private $objects;
        private $relevance;
        
 
        public function __construct()
        {
        }
        
        public function setCallback($a_callback)
        {
                $this->listener = $a_callback;
        }
        
        public function rewind()
        {
                $this->position = 0;
        }
        
        public function valid()
        {
                global $ilLog;
                
                $ilLog->write(__METHOD__.': Iterator valid called '. count($this->objects).' '. $this->position);
                if($this->position < count($this->objects))
                {
                        return true;
                }
                // if the number of candidates is smaller than the total number of hits
                // get next result page
                if(count($this->objects) < $this->getTotalHits())
                {
                        $ilLog->write("Trying to get next result page...");
                        @call_user_func($this->listener);
                }
                // Check again
                if($this->position < count($this->objects))
                {
                        return true;
                }
                return false;           
        }
        
        public function key()
        {
                return $this->position; 
        }
        
        public function current()
        {
                return $this->objects[$this->position];  
        }
        
        public function next()
        {
                $this->position++;
        }
        
        
        
        public function getCandidates()
        {
                return $this->objects ? $this->objects : array();
        }
        
        public function addObject($a_value,$a_relevance = 0)
        {
                $this->objects[] = $a_value;
                $this->relevance[$a_value] = $a_relevance;
        }
        
        public function getRelevance($a_obj_id)
        {
                if(!$this->getMaxScore())
                {
                        return 0;
                }
                return isset($this->relevance[$a_obj_id]) ? $this->relevance[$a_obj_id] / $this->getMaxScore() * 100 : 0; 
        }
        
        
        public function setLimit($a_limit)
        {
                $this->limit = $a_limit;
        }
        
        public function getLimit()
        {
                return $this->limit;
        }
        
        
        public function setMaxScore($a_score)
        {
                $this->max_score = $a_score;     
        }
        
        public function getMaxScore()
        {
                return $this->max_score;
        }
        
        public function setTotalHits($a_hits)
        {
                $this->total_hits = $a_hits;
        }
        
        public function getTotalHits()
        {
                return $this->total_hits;
        }
}
?>