class.ilGlossaryTerm.php

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<?php

/* Copyright (c) 1998-2019 ILIAS open source, Extended GPL, see docs/LICENSE */

class ilGlossaryTerm
{
    protected $db;

    public $lng;
    public $tpl;

    public $id;
    public $glossary;
    public $term;
    public $language;
    public $glo_id;
    public $import_id;

    public function __construct($a_id = 0)
    {
        global $DIC;

        $this->db = $DIC->database();
        $lng = $DIC->language();
        $tpl = $DIC["tpl"];

        $this->lng = $lng;
        $this->tpl = $tpl;

        $this->id = $a_id;
        $this->type = "term";
        if ($a_id != 0) {
            $this->read();
        }
    }

    public function read()
    {
        $ilDB = $this->db;
        
        $q = "SELECT * FROM glossary_term WHERE id = " .
            $ilDB->quote($this->id, "integer");
        $term_set = $ilDB->query($q);
        $term_rec = $ilDB->fetchAssoc($term_set);

        $this->setTerm($term_rec["term"]);
        $this->setImportId($term_rec["import_id"]);
        $this->setLanguage($term_rec["language"]);
        $this->setGlossaryId($term_rec["glo_id"]);
    }

    public static function _getIdForImportId($a_import_id)
    {
        global $DIC;

        $ilDB = $DIC->database();
        
        if ($a_import_id == "") {
            return 0;
        }
        
        $q = "SELECT * FROM glossary_term WHERE import_id = " .
            $ilDB->quote($a_import_id, "text") .
            " ORDER BY create_date DESC";
        $term_set = $ilDB->query($q);
        while ($term_rec = $ilDB->fetchAssoc($term_set)) {
            $glo_id = ilGlossaryTerm::_lookGlossaryID($term_rec["id"]);

            $ref_ids = ilObject::_getAllReferences($glo_id);    // will be 0 if import of lm is in progress (new import)
            if (count($ref_ids) == 0 || ilObject::_hasUntrashedReference($glo_id)) {
                return $term_rec["id"];
            }
        }

        return 0;
    }
    
    
    public static function _exists($a_id)
    {
        global $DIC;

        $ilDB = $DIC->database();

        if (is_int(strpos($a_id, "_"))) {
            $a_id = ilInternalLink::_extractObjIdOfTarget($a_id);
        }

        $q = "SELECT * FROM glossary_term WHERE id = " .
            $ilDB->quote($a_id, "integer");
        $obj_set = $ilDB->query($q);
        if ($obj_rec = $ilDB->fetchAssoc($obj_set)) {
            return true;
        } else {
            return false;
        }
    }


    public function setId($a_id)
    {
        $this->id = $a_id;
    }


    public function getId()
    {
        return $this->id;
    }

    public function setGlossary(&$a_glossary)
    {
        $this->glossary = $a_glossary;
        $this->setGlossaryId($a_glossary->getId());
    }


    public function setGlossaryId($a_glo_id)
    {
        $this->glo_id = $a_glo_id;
    }


    public function getGlossaryId()
    {
        return $this->glo_id;
    }


    public function setTerm($a_term)
    {
        $this->term = $a_term;
    }


    public function getTerm()
    {
        return $this->term;
    }


    public function setLanguage($a_language)
    {
        $this->language = $a_language;
    }

    public function getLanguage()
    {
        return $this->language;
    }


    public function setImportId($a_import_id)
    {
        $this->import_id = $a_import_id;
    }


    public function getImportId()
    {
        return $this->import_id;
    }


    public function create()
    {
        $ilDB = $this->db;
        
        $this->setId($ilDB->nextId("glossary_term"));
        $ilDB->manipulate("INSERT INTO glossary_term (id, glo_id, term, language, import_id, create_date, last_update)" .
            " VALUES (" .
            $ilDB->quote($this->getId(), "integer") . ", " .
            $ilDB->quote($this->getGlossaryId(), "integer") . ", " .
            $ilDB->quote($this->term, "text") . ", " .
            $ilDB->quote($this->language, "text") . "," .
            $ilDB->quote($this->getImportId(), "text") . "," .
            $ilDB->now() . ", " .
            $ilDB->now() . ")");
    }


    public function delete()
    {
        $ilDB = $this->db;
        
        $defs = ilGlossaryDefinition::getDefinitionList($this->getId());
        foreach ($defs as $def) {
            $def_obj = new ilGlossaryDefinition($def["id"]);
            $def_obj->delete();
        }

        // delete term references
        ilGlossaryTermReferences::deleteReferencesOfTerm($this->getId());

        // delete glossary_term record
        $ilDB->manipulate("DELETE FROM glossary_term " .
            " WHERE id = " . $ilDB->quote($this->getId(), "integer"));
    }


    public function update()
    {
        $ilDB = $this->db;
        
        $ilDB->manipulate("UPDATE glossary_term SET " .
            " glo_id = " . $ilDB->quote($this->getGlossaryId(), "integer") . ", " .
            " term = " . $ilDB->quote($this->getTerm(), "text") . ", " .
            " import_id = " . $ilDB->quote($this->getImportId(), "text") . ", " .
            " language = " . $ilDB->quote($this->getLanguage(), "text") . ", " .
            " last_update = " . $ilDB->now() . " " .
            " WHERE id = " . $ilDB->quote($this->getId(), "integer"));
    }

    public static function _lookGlossaryID($term_id)
    {
        global $DIC;

        $ilDB = $DIC->database();

        $query = "SELECT * FROM glossary_term WHERE id = " .
            $ilDB->quote($term_id, "integer");
        $obj_set = $ilDB->query($query);
        $obj_rec = $ilDB->fetchAssoc($obj_set);

        return $obj_rec["glo_id"];
    }

    public static function _lookGlossaryTerm($term_id)
    {
        global $DIC;

        $ilDB = $DIC->database();

        $query = "SELECT * FROM glossary_term WHERE id = " .
            $ilDB->quote($term_id, "integer");
        $obj_set = $ilDB->query($query);
        $obj_rec = $ilDB->fetchAssoc($obj_set);

        return $obj_rec["term"];
    }
    
    public static function _lookLanguage($term_id)
    {
        global $DIC;

        $ilDB = $DIC->database();

        $query = "SELECT * FROM glossary_term WHERE id = " .
            $ilDB->quote($term_id, "integer");
        $obj_set = $ilDB->query($query);
        $obj_rec = $ilDB->fetchAssoc($obj_set);

        return $obj_rec["language"];
    }

    public static function getTermList(
        $a_glo_ref_id,
        $searchterm = "",
        $a_first_letter = "",
        $a_def = "",
        $a_tax_node = 0,
        $a_add_amet_fields = false,
        array $a_amet_filter = null,
        $a_include_references = false
    ) {
        global $DIC;

        if (is_array($a_glo_ref_id)) {
            $a_glo_id = array_map(function ($id) {
                return ilObject::_lookupObjectId($id);
            }, $a_glo_ref_id);
        } else {
            $a_glo_id = ilObject::_lookupObjectId($a_glo_ref_id);
        }
        $ilDB = $DIC->database();

        $join = $in = "";

        $terms = array();

        // get all term ids under taxonomy node (if given)
        if ($a_tax_node > 1) {
            $tax_ids = ilObjTaxonomy::getUsageOfObject($a_glo_id);
            if (count($tax_ids) > 0) {
                $items = ilObjTaxonomy::getSubTreeItems("glo", $a_glo_id, "term", $tax_ids[0], $a_tax_node);
                $sub_tree_ids = array();
                foreach ($items as $i) {
                    $sub_tree_ids[] = $i["item_id"];
                }
                $in = " AND " . $ilDB->in("gt.id", $sub_tree_ids, false, "integer");
            }
        }
        
        if ($a_def != "") {
            // meta glossary?
            if (is_array($a_glo_id)) {
                $glo_where = $ilDB->in("page_object.parent_id", $a_glo_id, false, "integer");
            } else {
                $glo_where = " page_object.parent_id = " . $ilDB->quote($a_glo_id, "integer");
            }

            $join = " JOIN glossary_definition gd ON (gd.term_id = gt.id)" .
            " JOIN page_object ON (" .
            $glo_where .
            " AND page_object.parent_type = " . $ilDB->quote("gdf", "text") .
            " AND page_object.page_id = gd.id" .
            " AND " . $ilDB->like("page_object.content", "text", "%" . $a_def . "%") .
            ")";
        }

        $searchterm = (!empty($searchterm))
            ? " AND " . $ilDB->like("term", "text", "%" . $searchterm . "%") . " "
            : "";
            
        if ($a_first_letter != "") {
            $searchterm .= " AND " . $ilDB->upper($ilDB->substr("term", 1, 1)) . " = " . $ilDB->upper($ilDB->quote($a_first_letter, "text")) . " ";
        }

        // include references
        $where_glo_id_or = "";
        if ($a_include_references) {
            $join .= " LEFT JOIN glo_term_reference tr ON (gt.id = tr.term_id) ";
            if (is_array($a_glo_id)) {
                $where_glo_id_or = " OR " . $ilDB->in("tr.glo_id", $a_glo_id, false, "integer");
            } else {
                $where_glo_id_or = " OR tr.glo_id = " . $ilDB->quote($a_glo_id, "integer");
            }
        }

        // meta glossary
        if (is_array($a_glo_id)) {
            $where = "(" . $ilDB->in("gt.glo_id", $a_glo_id, false, "integer") . $where_glo_id_or . ")";
        } else {
            $where = "(gt.glo_id = " . $ilDB->quote($a_glo_id, "integer") . $where_glo_id_or . ")";
        }
        
        $where .= $in;


        $q = "SELECT DISTINCT(gt.term), gt.id, gt.glo_id, gt.language FROM glossary_term gt " . $join . " WHERE " . $where . $searchterm . " ORDER BY term";

        //echo $q; exit;

        $term_set = $ilDB->query($q);
        $glo_ids = array();
        while ($term_rec = $ilDB->fetchAssoc($term_set)) {
            $terms[] = array("term" => $term_rec["term"],
                "language" => $term_rec["language"], "id" => $term_rec["id"], "glo_id" => $term_rec["glo_id"]);
            $glo_ids[] = $term_rec["glo_id"];
        }

        // add advanced metadata
        if (($a_add_amet_fields || is_array($a_amet_filter)) && !is_array($a_glo_ref_id)) {
            $terms = ilAdvancedMDValues::queryForRecords($a_glo_ref_id, "glo", "term", $glo_ids, "term", $terms, "glo_id", "id", $a_amet_filter);
        }
        return $terms;
    }

    public static function getFirstLetters($a_glo_id, $a_tax_node = 0)
    {
        global $DIC;

        $ilDB = $DIC->database();
        
        $terms = array();
                
        // meta glossary
        if (is_array($a_glo_id)) {
            $where = $ilDB->in("glo_id", $a_glo_id, false, "integer");
        } else {
            $where = " glo_id = " . $ilDB->quote($a_glo_id, "integer") . " ";
            
            // get all term ids under taxonomy node (if given)
            if ($a_tax_node > 1) {
                $tax_ids = ilObjTaxonomy::getUsageOfObject($a_glo_id);
                if (count($tax_ids) > 0) {
                    $items = ilObjTaxonomy::getSubTreeItems("glo", $a_glo_id, "term", $tax_ids[0], $a_tax_node);
                    $sub_tree_ids = array();
                    foreach ($items as $i) {
                        $sub_tree_ids[] = $i["item_id"];
                    }
                    $in = " AND " . $ilDB->in("id", $sub_tree_ids, false, "integer");
                }
            }
            
            $where .= $in;
        }
        
        $q = "SELECT DISTINCT " . $ilDB->upper($ilDB->substr("term", 1, 1)) . " let FROM glossary_term WHERE " . $where . " ORDER BY let";
        $let_set = $ilDB->query($q);
        
        $lets = array();
        while ($let_rec = $ilDB->fetchAssoc($let_set)) {
            $let[$let_rec["let"]] = $let_rec["let"];
        }
        return $let;
    }

    public function exportXML(&$a_xml_writer, $a_inst)
    {
        $attrs = array();
        $attrs["Language"] = $this->getLanguage();
        $attrs["Id"] = "il_" . IL_INST_ID . "_git_" . $this->getId();
        $a_xml_writer->xmlStartTag("GlossaryItem", $attrs);

        $attrs = array();
        $a_xml_writer->xmlElement("GlossaryTerm", $attrs, $this->getTerm());

        $defs = ilGlossaryDefinition::getDefinitionList($this->getId());

        foreach ($defs as $def) {
            $definition = new ilGlossaryDefinition($def["id"]);
            $definition->exportXML($a_xml_writer, $a_inst);
        }

        $a_xml_writer->xmlEndTag("GlossaryItem");
    }

    public static function getNumberOfUsages($a_term_id)
    {
        return count(ilGlossaryTerm::getUsages($a_term_id));
    }

    public static function getUsages($a_term_id)
    {
        $usages = (ilInternalLink::_getSourcesOfTarget("git", $a_term_id, 0));

        foreach (ilGlossaryTermReferences::lookupReferencesOfTerm($a_term_id) as $glo_id) {
            $usages["glo:termref:" . $glo_id . ":-"] = array(
                "type" => "glo:termref",
                "id" => $glo_id,
                "lang" => "-"
            );
        }

        return $usages;
    }
    
    public static function _copyTerm($a_term_id, $a_glossary_id)
    {
        $old_term = new ilGlossaryTerm($a_term_id);

        // copy the term
        $new_term = new ilGlossaryTerm();
        $new_term->setTerm($old_term->getTerm());
        $new_term->setLanguage($old_term->getLanguage());
        $new_term->setGlossaryId($a_glossary_id);
        $new_term->create();

        // copy the definitions
        $def_list = ilGlossaryDefinition::getDefinitionList($a_term_id);
        foreach ($def_list as $def) {
            $old_def = new ilGlossaryDefinition($def["id"]);
            
            $new_def = new ilGlossaryDefinition();
            $new_def->setShortText($old_def->getShortText());
            $new_def->setNr($old_def->getNr());
            $new_def->setTermId($new_term->getId());
            $new_def->create();
            
            // copy meta data
            $md = new ilMD(
                $old_term->getGlossaryId(),
                $old_def->getPageObject()->getId(),
                $old_def->getPageObject()->getParentType()
            );
            $new_md = $md->cloneMD(
                $a_glossary_id,
                $new_def->getPageObject()->getId(),
                $old_def->getPageObject()->getParentType()
            );


            $new_page = $new_def->getPageObject();
            $old_def->getPageObject()->copy($new_page->getId(), $new_page->getParentType(), $new_page->getParentId(), true);

            // page content
            //$new_def->getPageObject()->setXMLContent($old_def->getPageObject()->copyXmlContent(true));
            //$new_def->getPageObject()->buildDom();
            //$new_def->getPageObject()->update();
        }

        // adv metadata
        $old_recs = ilAdvancedMDRecord::_getSelectedRecordsByObject("glo", $old_term->getGlossaryId(), "term");
        $new_recs = ilAdvancedMDRecord::_getSelectedRecordsByObject("glo", $a_glossary_id, "term");
        foreach ($old_recs as $old_record_obj) {
            reset($new_recs);
            foreach ($new_recs as $new_record_obj) {
                if ($old_record_obj->getRecordId() == $new_record_obj->getRecordId()) {
                    foreach (ilAdvancedMDFieldDefinition::getInstancesByRecordId($old_record_obj->getRecordId()) as $def) {
                        // now we need to copy $def->getFieldId() values from old term to new term
                        // how?
                        // clone values

                        $source_primary = array("obj_id" => array("integer", $old_term->getGlossaryId()));
                        $source_primary["sub_type"] = array("text", "term");
                        $source_primary["sub_id"] = array("integer", $old_term->getId());
                        $source_primary["field_id"] = array("integer", $def->getFieldId());
                        $target_primary = array("obj_id" => array("integer", $new_term->getGlossaryId()));
                        $target_primary["sub_type"] = array("text", "term");
                        $target_primary["sub_id"] = array("integer", $new_term->getId());

                        ilADTFactory::getInstance()->initActiveRecordByType();
                        $has_cloned = ilADTActiveRecordByType::cloneByPrimary(
                            "adv_md_values",
                            array(
                                "obj_id" => "integer",
                                "sub_type" => "text",
                                "sub_id" => "integer",
                                "field_id" => "integer"
                            ),
                            $source_primary,
                            $target_primary,
                            array("disabled" => "integer")
                        );
                    }
                }
            }
        }


        return $new_term->getId();
    }

    public static function getTermsOfGlossary($a_glo_id)
    {
        global $DIC;

        $ilDB = $DIC->database();

        $set = $ilDB->query(
            "SELECT id FROM glossary_term WHERE " .
            " glo_id = " . $ilDB->quote($a_glo_id, "integer")
        );
        $ids = array();
        while ($rec = $ilDB->fetchAssoc($set)) {
            $ids[] = $rec["id"];
        }
        return $ids;
    }
}