class.ilSearchSettings.php

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<?php
/* Copyright (c) 1998-2009 ILIAS open source, Extended GPL, see docs/LICENSE */

class ilSearchSettings
{
        const LIKE_SEARCH = 0;
        const INDEX_SEARCH = 1;
        const LUCENE_SEARCH = 2;
        
        const OPERATOR_AND      = 1;
        const OPERATOR_OR       = 2;
        
        protected static $instance = null;
        
        protected $default_operator = self::OPERATOR_AND;
        protected $fragmentSize = 30;
        protected $fragmentCount =  3;
        protected $numSubitems = 5;
        protected $showRelevance = true;
        protected $last_index_date = null;
        protected $lucene_item_filter_enabled = false;
        protected $lucene_item_filter = array();
        
        
        
        var $ilias = null;
        var $max_hits = null;
        var $index = null;

        function ilSearchSettings()
        {
                global $ilias;

                $this->ilias =& $ilias;
                $this->__read();
        }
        
        public static function getInstance()
        {
                if(self::$instance == null)
                {
                        return self::$instance = new ilSearchSettings();
                }
                return self::$instance;
        }
        
        public static function getLuceneItemFilterDefinitions()
        {
                return array(
                        'crs' => array('filter' => 'type:crs','trans' => 'objs_crs'),
                        'grp' => array('filter' => 'type:grp', 'trans' => 'objs_grp'),
                        'lms' => array('filter' => 'type:lm OR type:htlm OR type:sahs OR type:dbk','trans' => 'learning_resource'),
                        'glo' => array('filter' => 'type:glo','trans' => 'objs_glo'),
                        'mep' => array('filter' => 'type:mep', 'trans' => 'objs_mep'),
                        'tst' => array('filter' => 'type:tst OR type:svy OR type:qpl OR type:spl','trans' => 'search_tst_svy'),
                        'frm' => array('filter' => 'type:frm','trans' => 'objs_frm'),
                        'exc' => array('filter' => 'type:exc','trans' => 'objs_exc'),
                        'file' => array('filter' => 'type:file','trans' => 'objs_file'),
                        'mcst' => array('filter' => 'type:mcst','trans' => 'objs_mcst'),
                        'wiki' => array('filter' => 'type:wiki','trans' => 'objs_wiki')
                );
        }
        
        public function getEnabledLuceneItemFilterDefinitions()
        {
                if(!$this->isLuceneItemFilterEnabled())
                {
                        return array();
                }
                
                $filter = $this->getLuceneItemFilter();
                $enabled = array();
                foreach(self::getLuceneItemFilterDefinitions() as $obj => $def)
                {
                        if(isset($filter[$obj]) and $filter[$obj])
                        {
                                $enabled[$obj] = $def;
                        }
                }
                return $enabled;
        }

        function _getSearchSettingRefId()
        {
                global $ilDB;

                static $seas_ref_id = 0;

                if($seas_ref_id)
                {
                        return $seas_ref_id;
                }
                $query = "SELECT object_reference.ref_id as ref_id FROM object_reference,tree,object_data ".
                        "WHERE tree.parent = ".$ilDB->quote(SYSTEM_FOLDER_ID,'integer')." ".
                        "AND object_data.type = 'seas' ".
                        "AND object_reference.ref_id = tree.child ".
                        "AND object_reference.obj_id = object_data.obj_id";
                        
                $res = $ilDB->query($query);
                $row = $res->fetchRow(DB_FETCHMODE_OBJECT);
                
                return $seas_ref_id = $row->ref_id;
        }

        function enabledIndex()
        {
                global $ilDB;
                
                if($ilDB->getDBType() == 'oracle')
                {
                        return false;
                }
                return $this->index ? true : false;
        }
        function enableIndex($a_status)
        {
                $this->index = $a_status;
        }
        function enabledLucene()
        {
                return $this->lucene ? true : false;
        }
        function enableLucene($a_status)
        {
                $this->lucene = $a_status ? true : false;
        }

        function getMaxHits()
        {
                return $this->max_hits;
        }
        function setMaxHits($a_max_hits)
        {
                $this->max_hits = $a_max_hits;
        }
        
        // BEGIN PATCH Lucene search
        public function getDefaultOperator()
        {
                return $this->default_operator;
        }
        
        public function setDefaultOperator($a_op)
        {
                $this->default_operator = $a_op;
        }
        
        public function setFragmentSize($a_size)
        {
                $this->fragmentSize = $a_size;
        }
        
        public function getFragmentSize()
        {
                return $this->fragmentSize;
        }
        
        public function setFragmentCount($a_count)
        {
                $this->fragmentCount = $a_count;
        }

        public function getHideAdvancedSearch()
        {
                return $this->hide_adv_search ? true : false;
        }
        public function setHideAdvancedSearch($a_status)
        {
                $this->hide_adv_search = $a_status;
        }
        public function getAutoCompleteLength()
        {
                return $this->auto_complete_length;
        }
        public function setAutoCompleteLength($auto_complete_length)
        {
                $this->auto_complete_length = $auto_complete_length;
        }

        public function getFragmentCount()
        {
                return $this->fragmentCount;
        }
        
        public function setMaxSubitems($a_max)
        {
                $this->numSubitems = $a_max;
        }
        
        public function getMaxSubitems()
        {
                return $this->numSubitems;
        }
        
        public function isRelevanceVisible()
        {
                return $this->showRelevance;
        }
        
        public function showRelevance($a_status)
        {
                $this->showRelevance = (bool) $a_status;
        }
        
        public function getLastIndexTime()
        {
                return $this->last_index_date instanceof ilDateTime  ?
                        $this->last_index_date :
                        new ilDateTime('2009-01-01 12:00:00',IL_CAL_DATETIME);
        }
        
        public function enableLuceneItemFilter($a_status)
        {
                $this->lucene_item_filter_enabled = $a_status;
        }
        
        public function isLuceneItemFilterEnabled()
        {
                return $this->lucene_item_filter_enabled;
        }

        public function getLuceneItemFilter()
        {
                return $this->lucene_item_filter;
        }
        
        public function setLuceneItemFilter($a_filter)
        {
                $this->lucene_item_filter = $a_filter;
        }
        
        public function setLastIndexTime($time)
        {
                $this->last_index_date = $time;
        }
        // END PATCH Lucene Search
        
        function update()
        {
                // setSetting writes to db
                $this->ilias->setSetting('search_max_hits',$this->getMaxHits());
                $this->ilias->setSetting('search_index',(int) $this->enabledIndex());
                $this->ilias->setSetting('search_lucene',(int) $this->enabledLucene());
                
                $this->ilias->setSetting('lucene_default_operator',$this->getDefaultOperator());
                $this->ilias->setSetting('lucene_fragment_size',$this->getFragmentSize());
                $this->ilias->setSetting('lucene_fragment_count',$this->getFragmentCount());
                $this->ilias->setSetting('lucene_max_subitems',$this->getMaxSubitems());
                $this->ilias->setSetting('lucene_show_relevance',$this->isRelevanceVisible());
                $this->ilias->setSetting('lucene_last_index_time',$this->getLastIndexTime()->get(IL_CAL_UNIX));
                $this->ilias->setSetting('hide_adv_search',(int) $this->getHideAdvancedSearch());
                $this->ilias->setSetting('auto_complete_length',(int) $this->getAutoCompleteLength());
                $this->ilias->setSetting('lucene_item_filter_enabled',(int) $this->isLuceneItemFilterEnabled());
                $this->ilias->setSetting('lucene_item_filter',serialize($this->getLuceneItemFilter()));

                return true;
        }

        // PRIVATE
        function __read()
        {
                $this->setMaxHits($this->ilias->getSetting('search_max_hits',10));
                $this->enableIndex($this->ilias->getSetting('search_index',0));
                $this->enableLucene($this->ilias->getSetting('search_lucene',0));
                
                $this->setDefaultOperator($this->ilias->getSetting('lucene_default_operator',self::OPERATOR_AND));
                $this->setFragmentSize($this->ilias->getSetting('lucene_fragment_size',50));
                $this->setFragmentCount($this->ilias->getSetting('lucene_fragment_count',3));
                $this->setMaxSubitems($this->ilias->getSetting('lucene_max_subitems',5));
                $this->showRelevance($this->ilias->getSetting('lucene_show_relevance',true));

                if($time = $this->ilias->getSetting('lucene_last_index_time',false))
                {
                        $this->setLastIndexTime(new ilDateTime($time,IL_CAL_UNIX));
                }
                else
                {
                        $this->setLastIndexTime(null);  
                }
                
                $this->setHideAdvancedSearch($this->ilias->getSetting('hide_adv_search',0));
                $this->setAutoCompleteLength($this->ilias->getSetting('auto_complete_length',10));
                
                $this->enableLuceneItemFilter($this->ilias->getSetting('lucene_item_filter_enabled',(int) $this->isLuceneItemFilterEnabled()));
                
                $filter = $this->ilias->getSetting('lucene_item_filter',serialize($this->getLuceneItemFilter()));
                $this->setLuceneItemFilter(unserialize($filter));
        }
}
?>