class.ilSearchGUI.php

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<?php
/* Copyright (c) 1998-2009 ILIAS open source, Extended GPL, see docs/LICENSE */
 
include_once 'Services/Search/classes/class.ilSearchBaseGUI.php';
 
 
 
class ilSearchGUI extends ilSearchBaseGUI
{
        protected $search_cache = null;
        
        var $root_node;
        var $combination;
        var $string;
        var $type;
 
        
        public function __construct()
        {
                global $ilUser, $lng;
 
                $lng->loadLanguageModule("search");
                
                // put form values into "old" post variables
                $this->initStandardSearchForm(ilSearchBaseGUI::SEARCH_FORM_STANDARD);
                $this->form->checkInput();
                
                $new_search = isset($_POST['cmd']['performSearch']) ? true : false;
 
                $enabled_types = ilSearchSettings::getInstance()->getEnabledLuceneItemFilterDefinitions();
                foreach($enabled_types as $type => $pval)
                {
                        if($_POST['filter_type'][$type] == 1)
                        {
                                $_POST["search"]["details"][$type] = $_POST['filter_type'][$type];
                        }
                }
 
                $_POST["search"]["string"] = $_POST["term"];
                $_POST["search"]["combination"] = $_POST["combination"];
                $_POST["search"]["type"] = $_POST["type"];
                $_SESSION['search_root'] = $_POST["area"];
 
                $this->root_node = $_SESSION['search_root'] ? $_SESSION['search_root'] : ROOT_FOLDER_ID;
                $this->setType($_POST['search']['type'] ? $_POST['search']['type'] : $_SESSION['search']['type']);
                $this->setCombination($_POST['search']['combination'] ? $_POST['search']['combination'] : $_SESSION['search']['combination']);
                $this->setString($_POST['search']['string'] ? $_POST['search']['string'] : $_SESSION['search']['string']);
                #$this->setDetails($_POST['search']['details'] ? $_POST['search']['details'] : $_SESSION['search']['details']);
                $this->setDetails($new_search ? $_POST['search']['details'] : $_SESSION['search']['details']);
                parent::__construct();
        }
 
 
        public function executeCommand()
        {
                global $rbacsystem, $ilCtrl;
                
 
 
                $next_class = $this->ctrl->getNextClass($this);
                $cmd = $this->ctrl->getCmd();
 
                switch($next_class)
                {
                        case "ilpropertyformgui":
                                //$this->initStandardSearchForm(ilSearchBaseGUI::SEARCH_FORM_STANDARD);
                                $form = $this->getSearchAreaForm();
                                $this->prepareOutput();
                                $ilCtrl->setReturn($this, 'storeRoot');
                                return $ilCtrl->forwardCommand($form);
                                
                        case 'ilobjectcopygui':
                                $this->prepareOutput();
                                include_once './Services/Object/classes/class.ilObjectCopyGUI.php';
                                $cp = new ilObjectCopyGUI($this);
                                $this->ctrl->forwardCommand($cp);
                                break;
                        
                        default:
                                $this->initUserSearchCache();
                                if(!$cmd)
                                {
                                        $cmd = "showSavedResults";
                                }
                                $this->prepareOutput();
                                $this->handleCommand($cmd);
                                break;
                }
                return true;
        }
 
        function setType($a_type)
        {
                $_SESSION['search']['type'] = $this->type = $a_type;
        }
        function getType()
        {
                return $this->type ? $this->type : ilSearchBaseGUI::SEARCH_FAST;
        }
        function setCombination($a_combination)
        {
                $_SESSION['search']['combination'] = $this->combination = $a_combination;
        }
        function getCombination()
        {
                return $this->combination ? $this->combination : ilSearchBaseGUI::SEARCH_OR;
        }
        function setString($a_str)
        {
                $_SESSION['search']['string'] = $this->string = $a_str;
        }
        function getString()
        {
                return $this->string;
        }
        function setDetails($a_details)
        {
                $_SESSION['search']['details'] = $this->details = $a_details;
        }
        function getDetails()
        {
                return $this->details ? $this->details : array();
        }
 
                
        function getRootNode()
        {
                return $this->root_node ? $this->root_node : ROOT_FOLDER_ID;
        }
        function setRootNode($a_node_id)
        {
                $_SESSION['search_root'] = $this->root_node = $a_node_id;
        }
                
        
        function remoteSearch()
        {
                $this->setString(ilUtil::stripSlashes($_POST['queryString']));
                $this->setRootNode((int) $_POST['root_id']);
                $this->performSearch();
                
        }
        
        protected function storeRoot()
        {
                $form = $this->getSearchAreaForm();
 
                $this->root_node = $form->getItemByPostVar('area')->getValue();
                $this->search_cache->setRoot($this->root_node);
                $this->search_cache->save();
                $this->search_cache->deleteCachedEntries();
 
                include_once './Services/Object/classes/class.ilSubItemListGUI.php';
                ilSubItemListGUI::resetDetails();
 
                $this->performSearch();
        }
 
        function autoComplete()
        {
                $q = $_REQUEST["term"];
                include_once("./Services/Search/classes/class.ilSearchAutoComplete.php");
                $list = ilSearchAutoComplete::getList($q);
                echo $list;
                exit;
 
        }
        
        function showSearch()
        {
                global $ilLocator, $ilCtrl, $lng;
                
                // include js needed
                include_once("./Services/UIComponent/Overlay/classes/class.ilOverlayGUI.php");
                ilOverlayGUI::initJavascript();
                $this->tpl->addJavascript("./Services/Search/js/Search.js");
 
                include_once("./Services/UIComponent/Glyph/classes/class.ilGlyphGUI.php");
 
                $this->tpl->addBlockFile('ADM_CONTENT','adm_content','tpl.search.html','Services/Search');
                $this->tpl->setVariable("FORM_ACTION", $ilCtrl->getFormAction($this,'performSearch'));
                $this->tpl->setVariable("TERM", ilUtil::prepareFormOutput($this->getString()));
                include_once("./Services/UIComponent/Button/classes/class.ilSubmitButton.php");
                $btn = ilSubmitButton::getInstance();
                $btn->setCommand("performSearch");
                $btn->setCaption("search");
                $this->tpl->setVariable("SUBMIT_BTN",$btn->render());
                $this->tpl->setVariable("TXT_OPTIONS", $lng->txt("options"));
                $this->tpl->setVariable("ARR_IMG", ilGlyphGUI::get(ilGlyphGUI::CARET));
                $this->tpl->setVariable("TXT_COMBINATION", $lng->txt("search_term_combination"));
                $this->tpl->setVariable('TXT_COMBINATION_DEFAULT', ilSearchSettings::getInstance()->getDefaultOperator() == ilSearchSettings::OPERATOR_AND ? $lng->txt('search_all_words') : $lng->txt('search_any_word'));
 
                if (ilSearchSettings::getInstance()->isLuceneItemFilterEnabled())
                {
                        $this->tpl->setCurrentBlock("type_sel");
                        $this->tpl->setVariable('TXT_TYPE_DEFAULT',$lng->txt("search_fast_info"));
                        $this->tpl->setVariable("TXT_TYPE", $lng->txt("search_type"));
                        $this->initStandardSearchForm(ilSearchBaseGUI::SEARCH_FORM_STANDARD);
                        $this->tpl->setVariable("ARR_IMGT", ilGlyphGUI::get(ilGlyphGUI::CARET));
                        $this->tpl->setVariable("FORM", $this->form->getHTML());
                        $this->tpl->parseCurrentBlock();
                }
 
                $this->tpl->setVariable("TXT_AREA", $lng->txt("search_area"));
                
 
                // search area form
                $this->tpl->setVariable('SEARCH_AREA_FORM', $this->getSearchAreaForm()->getHTML());
 
                return true;
        }
 
        function showSavedResults()
        {
                global $ilUser;
 
                // Read old result sets
                include_once 'Services/Search/classes/class.ilSearchResult.php';
        
                $result_obj = new ilSearchResult($ilUser->getId());
                $result_obj->read();
                $result_obj->filterResults($this->getRootNode());
 
                $this->showSearch();
 
                // Show them
                if(count($result_obj->getResults()))
                {
                        $this->addPager($result_obj,'max_page');
 
                        include_once './Services/Search/classes/class.ilSearchResultPresentation.php';
                        $presentation = new ilSearchResultPresentation($this, ilSearchResultPresentation::MODE_STANDARD);
                        $presentation->setResults($result_obj->getResultsForPresentation());
                        $presentation->setSubitemIds($result_obj->getSubitemIds());
                        $presentation->setPreviousNext($this->prev_link, $this->next_link);
                        #$presentation->setSearcher($searcher);
 
                        if($presentation->render())
                        {
//                              $this->tpl->setVariable('SEARCH_RESULTS',$presentation->getHTML());
                                $this->tpl->setVariable('RESULTS_TABLE',$presentation->getHTML(true));
                        }
                }
 
                return true;
        }
                
 
        function performSearch()
        {
                global $ilUser;
                
                if(!isset($_GET['page_number']) and $this->search_mode != 'in_results' )
                {
                        unset($_SESSION['max_page']);
                        $this->search_cache->deleteCachedEntries();
                }
 
                if($this->getType() == ilSearchBaseGUI::SEARCH_DETAILS and !$this->getDetails())
                {
                        ilUtil::sendInfo($this->lng->txt('search_choose_object_type'));
                        $this->showSearch();
                        return false;
                }
 
                // Step 1: parse query string
                if(!is_object($query_parser =& $this->__parseQueryString()))
                {
                        ilUtil::sendInfo($query_parser);
                        $this->showSearch();
                        
                        return false;
                }
                // Step 2: perform object search. Get an ObjectSearch object via factory. Depends on fulltext or like search type.
                $result =& $this->__searchObjects($query_parser);
 
                // Step 3: perform meta keyword search. Get an MetaDataSearch object.
                $result_meta =& $this->__searchMeta($query_parser,'keyword');
                $result->mergeEntries($result_meta);
 
                $result_meta =& $this->__searchMeta($query_parser,'contribute');
                $result->mergeEntries($result_meta);
        
                $result_meta =& $this->__searchMeta($query_parser,'title');
                $result->mergeEntries($result_meta);
        
                $result_meta =& $this->__searchMeta($query_parser,'description');
                $result->mergeEntries($result_meta);
        
                // Perform details search in object specific tables
                if($this->getType() == ilSearchBaseGUI::SEARCH_DETAILS)
                {
                        $result = $this->__performDetailsSearch($query_parser,$result);
                }
                // Step 5: Search in results
                if($this->search_mode == 'in_results')
                {
                        include_once 'Services/Search/classes/class.ilSearchResult.php';
 
                        $old_result_obj = new ilSearchResult($ilUser->getId());
                        $old_result_obj->read();
 
                        $result->diffEntriesFromResult($old_result_obj);
                }
                        
 
                // Step 4: merge and validate results
                $result->filter($this->getRootNode(),$query_parser->getCombination() == 'and');
                $result->save();
                $this->showSearch();
 
                if(!count($result->getResults()))
                {
                        ilUtil::sendInfo($this->lng->txt('search_no_match'));
                }
 
                if($result->isLimitReached())
                {
                        #$message = sprintf($this->lng->txt('search_limit_reached'),$this->settings->getMaxHits());
                        #ilUtil::sendInfo($message);
                }
 
                // Step 6: show results
                $this->addPager($result,'max_page');
                
                include_once './Services/Search/classes/class.ilSearchResultPresentation.php';
                $presentation = new ilSearchResultPresentation($this, ilSearchResultPresentation::MODE_STANDARD);
                $presentation->setResults($result->getResultsForPresentation());
                $presentation->setSubitemIds($result->getSubitemIds());
                $presentation->setPreviousNext($this->prev_link, $this->next_link);
 
                if($presentation->render())
                {
//                      $this->tpl->setVariable('SEARCH_RESULTS',$presentation->getHTML());
                        $this->tpl->setVariable('RESULTS_TABLE',$presentation->getHTML(true));
                }
 
                return true;
        }
 
                
 
        function prepareOutput()
        {
                global $ilTabs, $ilHelp;
                
                parent::prepareOutput();
                
                $ilHelp->setScreenIdComponent("src");
 
                $ilTabs->addTab("search", $this->lng->txt("search"),
                        $this->ctrl->getLinkTarget($this));
                
                if (!$this->settings->getHideAdvancedSearch())
                {
                        $ilTabs->addTab("adv_search", $this->lng->txt("search_advanced"),
                                $this->ctrl->getLinkTargetByClass('iladvancedsearchgui'));
                }
                
                $ilTabs->activateTab("search");
        }
 
        // PRIVATE
        function &__performDetailsSearch(&$query_parser,&$result)
        {
                foreach($this->getDetails() as $type => $enabled)
                {
                        if(!$enabled)
                        {
                                continue;
                        }
 
                        switch($type)
                        {
                                case 'crs':
                                        $crs_search = ilObjectSearchFactory::_getObjectSearchInstance($query_parser);
                                        $crs_search->setFilter(array('crs'));
                                        $result->mergeEntries($crs_search->performSearch());
                                        break;
                                
                                case 'grp':
                                        $grp_search = ilObjectSearchFactory::_getObjectSearchInstance($query_parser);
                                        $grp_search->setFilter(array('grp'));
                                        $result->mergeEntries($grp_search->performSearch());
                                        break;
                                
                                case 'lms':
                                        $content_search =& ilObjectSearchFactory::_getLMContentSearchInstance($query_parser);
                                        $content_search->setFilter($this->__getFilter());
                                        $result->mergeEntries($content_search->performSearch());
                                        break;
 
                                case 'frm':
                                        $forum_search =& ilObjectSearchFactory::_getForumSearchInstance($query_parser);
                                        $forum_search->setFilter($this->__getFilter());
                                        $result->mergeEntries($forum_search->performSearch());
                                        break;
 
                                case 'glo':
                                        // Glossary term definition pages
                                        $gdf_search =& ilObjectSearchFactory::_getLMContentSearchInstance($query_parser);
                                        $gdf_search->setFilter(array('gdf'));
                                        $result->mergeEntries($gdf_search->performSearch());
                                        // Glossary terms
                                        $gdf_term_search =& ilObjectSearchFactory::_getGlossaryDefinitionSearchInstance($query_parser);
                                        $result->mergeEntries($gdf_term_search->performSearch());
                                        break;
 
                                case 'exc':
                                        $exc_search =& ilObjectSearchFactory::_getExerciseSearchInstance($query_parser);
                                        $exc_search->setFilter($this->__getFilter());
                                        $result->mergeEntries($exc_search->performSearch());
                                        break;
 
                                case 'mcst':
                                        $mcst_search =& ilObjectSearchFactory::_getMediaCastSearchInstance($query_parser);
                                        $result->mergeEntries($mcst_search->performSearch());
                                        break;
 
                                case 'tst':
                                        $tst_search =& ilObjectSearchFactory::_getTestSearchInstance($query_parser);
                                        $tst_search->setFilter($this->__getFilter());
                                        $result->mergeEntries($tst_search->performSearch());
                                        break;
 
                                case 'mep':
                                        $mep_search =& ilObjectSearchFactory::_getMediaPoolSearchInstance($query_parser);
                                        $mep_search->setFilter($this->__getFilter());
                                        $result->mergeEntries($mep_search->performSearch());
                                        
                                        // Mob keyword search
                                        $mob_search = ilObjectSearchFactory::_getMediaPoolSearchInstance($query_parser);
                                        $mob_search->setFilter($this->__getFilter());
                                        $result->mergeEntries($mob_search->performKeywordSearch());
                                        
                                        break;
 
                                case 'wiki':
                                        $wiki_search =& ilObjectSearchFactory::_getWikiContentSearchInstance($query_parser);
                                        $wiki_search->setFilter($this->__getFilter());
                                        $result->mergeEntries($wiki_search->performSearch());
 
                                        /*$result_meta =& $this->__searchMeta($query_parser,'title');
                                        $result->mergeEntries($result_meta);
                                        $result_meta =& $this->__searchMeta($query_parser,'description');
                                        $result->mergeEntries($result_meta);*/
                                        break;
 
                        }
                }
                return $result;
        }
 
        function &__parseQueryString()
        {
                include_once 'Services/Search/classes/class.ilQueryParser.php';
 
                $query_parser = new ilQueryParser(ilUtil::stripSlashes($this->getString()));
                $query_parser->setCombination($this->getCombination());
                $query_parser->parse();
 
                if(!$query_parser->validate())
                {
                        return $query_parser->getMessage();
                }
                return $query_parser;
        }
        function &__searchObjects(&$query_parser)
        {
                include_once 'Services/Search/classes/class.ilObjectSearchFactory.php';
 
                $obj_search =& ilObjectSearchFactory::_getObjectSearchInstance($query_parser);
                if($this->getType() == ilSearchBaseGUI::SEARCH_DETAILS)
                {
                        $obj_search->setFilter($this->__getFilter());
                }
                return $obj_search->performSearch();
        }
 
 
        function &__searchMeta(&$query_parser,$a_type)
        {
                include_once 'Services/Search/classes/class.ilObjectSearchFactory.php';
 
                $meta_search =& ilObjectSearchFactory::_getMetaDataSearchInstance($query_parser);
                if($this->getType() == ilSearchBaseGUI::SEARCH_DETAILS)
                {
                        $meta_search->setFilter($this->__getFilter());
                }
                switch($a_type)
                {
                        case 'keyword':
                                $meta_search->setMode('keyword');
                                break;
 
                        case 'contribute':
                                $meta_search->setMode('contribute');
                                break;
 
                        case 'title':
                                $meta_search->setMode('title');
                                break;
 
                        case 'description':
                                $meta_search->setMode('description');
                                break;
                }
            return $meta_search->performSearch();
        }
        function __getFilter()
        {
                if($this->getType() != ilSearchBaseGUI::SEARCH_DETAILS)
                {
                        return false;
                }
                
                foreach($this->getDetails() as $key => $detail_type)
                {
                        if(!$detail_type)
                        {
                                continue;
                        }
                        
                        switch($key)
                        {
                                case 'lms':
                                        $filter[] = 'lm';
                                        $filter[] = 'dbk';
                                        $filter[] = 'pg';
                                        $filter[] = 'st';
                                        $filter[] = 'sahs';
                                        $filter[] = 'htlm';
                                        break;
 
                                case 'frm':
                                        $filter[] = 'frm';
                                        break;
 
                                case 'glo':
                                        $filter[] = 'glo';
                                        break;
 
                                case 'exc':
                                        $filter[] = 'exc';
                                        break;
 
                                case 'mcst':
                                        $filter[] = 'mcst';
                                        break;
 
                                case 'tst':
                                        $filter[] = 'tst';
                                        $filter[] = 'svy';
                                        $filter[] = 'qpl';
                                        $filter[] = 'spl';
                                        break;
 
                                case 'mep':
                                        $filter[] = 'mep';
                                        $filter[] = 'mob';
                                        break;
 
                                case 'fil':
                                        $filter[] = 'file';
                                        break;
                                        
                                case 'wiki':
                                        $filter[] = 'wpg';
                                        break;
                                
                                default:
                                        $filter[] = $key;
                        }
                }
                return $filter ? $filter : array();
        }
 
        protected function initUserSearchCache()
        {
                global $ilUser;
                
                include_once('Services/Search/classes/class.ilUserSearchCache.php');
                $this->search_cache = ilUserSearchCache::_getInstance($ilUser->getId());
                $this->search_cache->switchSearchType(ilUserSearchCache::DEFAULT_SEARCH);
                if($_GET['page_number'])
                {
                        $this->search_cache->setResultPageNumber((int) $_GET['page_number']);
                }
                if(isset($_POST['cmd']['performSearch']))
                {
                        $this->search_cache->setQuery(ilUtil::stripSlashes($_POST['term']));
                        $this->search_cache->save();
                }
        }
}
?>