class.ilDataCollectionStandardField.php

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

include_once './Modules/DataCollection/classes/class.ilDataCollectionField.php';
include_once './Modules/DataCollection/classes/class.ilDataCollectionDatatype.php';

class ilDataCollectionStandardField extends ilDataCollectionField
{
        /*
         * doRead
         */
        public function doRead()
        {
                global $ilLog;
                $message = "Standard fields cannot be read from DB";
                ilUtil::sendFailure($message);
                $ilLog->write("[ilDataCollectionStandardField] ".$message);
        }
        
        /*
         * doCreate
         */
        public function doCreate()
        {
                global $ilLog;
                $message = "Standard fields cannot be written to DB";
                ilUtil::sendFailure($message);
                $ilLog->write("[ilDataCollectionStandardField] ".$message);
        }
        
        /*
         * doUpdate
         */
        public function doUpdate()
        {
                $this->updateVisibility();
                $this->updateFilterability();
                $this->updateExportability();
        }


        public function cloneStructure(ilDataCollectionStandardField $original_record) {
                $this->setEditable($original_record->isEditable());
                $this->setLocked($original_record->getLocked());
                $this->setFilterable($original_record->isFilterable());
                $this->setVisible($original_record->isVisible());
                $this->setOrder($original_record->getOrder());
                $this->setRequired($original_record->getRequired());
                $this->setUnique($original_record->isUnique());
                $this->setExportable($original_record->getExportable());

                $this->doUpdate();
        }
        
        /*
         * getLocked
         */
        public function getLocked()
        {
                return true;
        }
        
        /*
         * _getStandardFieldsAsArray
         */
        static function _getStandardFieldsAsArray()
        {

                //TODO: this isn't particularly pretty especially as $lng is used in the model. On the long run the standard fields should be refactored into "normal" fields.
                global $lng;
                $stdfields = array(
                        array("id"=>"id", "title" => $lng->txt("dcl_id"), "description" => $lng->txt("dcl_id_description"), "datatype_id" => ilDataCollectionDatatype::INPUTFORMAT_NUMBER, "required" => true),
                        array("id"=>"create_date", "title" => $lng->txt("dcl_creation_date"), "description" => $lng->txt("dcl_creation_date_description"), "datatype_id" => ilDataCollectionDatatype::INPUTFORMAT_DATETIME, "required" => true),
                        array("id"=>"last_update", "title" => $lng->txt("dcl_last_update"), "description" => $lng->txt("dcl_last_update_description"), "datatype_id" => ilDataCollectionDatatype::INPUTFORMAT_DATETIME, "required" => true),
                        array("id"=>"owner", "title" => $lng->txt("dcl_owner"), "description" => $lng->txt("dcl_owner_description"), "datatype_id" => ilDataCollectionDatatype::INPUTFORMAT_TEXT, "required" => true),
                        array("id"=>"last_edit_by", "title" => $lng->txt("dcl_last_edited_by"), "description" => $lng->txt("dcl_last_edited_by_description"), "datatype_id" => ilDataCollectionDatatype::INPUTFORMAT_TEXT, "required" => true),
                    array('id' => 'comments', 'title' => $lng->txt('dcl_comments'), 'description' => $lng->txt('dcl_comments_description'), 'datatype_id' => ilDataCollectionDatatype::INPUTFORMAT_NONE, 'required' => false),
        );
                return $stdfields;
        }
        
        /*
         * _getStandardFields
         */
        static function _getStandardFields($table_id)
        {
                $stdFields = array();
                foreach(self::_getStandardFieldsAsArray() as $array)
                {
                        $array["table_id"] = $table_id;
                        //$array["datatype_id"] = self::_getDatatypeForId($array["id"]);
                        $field = new ilDataCollectionStandardField();
                        $field->buildFromDBRecord($array);
                        $stdFields[] = $field;
                }
                return $stdFields;
        }


        static function _getAllStandardFieldTitles() {
                global $ilDB;
                $identifiers = '';
                foreach (array('dcl_id', 'dcl_creation_date', 'dcl_last_update', 'dcl_owner', 'dcl_last_edited_by', 'dcl_comments') as $id) {
                        $identifiers .= $ilDB->quote($id, 'text') . ',';
                }
                $identifiers = rtrim($identifiers, ',');
                $sql = $ilDB->query('SELECT value FROM lng_data WHERE identifier IN (' . $identifiers . ')');
                $titles = array();
                while ($rec = $ilDB->fetchAssoc($sql)) {
                        $titles[] = $rec['value'];
                }
                return $titles;
        }

        /*
         * _isStandardField
         */
        static function _isStandardField($field_id)
        {
                $return = false;
                foreach(self::_getStandardFieldsAsArray() as $field)
                {
                        if($field["id"] == $field_id)
                        {
                                $return = true;
                        }
                }
                        
                return $return;
        }

        public static function _getDatatypeForId($id)
        {
        $datatype = null;
        foreach (self::_getStandardFieldsAsArray() as $fields_data) {
            if ($id == $fields_data['id']) {
                $datatype = $fields_data['datatype_id'];
                break;
            }
        }
        return $datatype;
        }

        /*
         * isStandardField
         */
        public function isStandardField()
        {
                return true;
        }
        
        /*
         * isUnique
         */
        public function isUnique()
        {
                return false;
        }
}

?>