class.ilDataCollectionCache.php

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<?php
require_once('class.ilDataCollectionReferenceField.php');
require_once('class.ilDataCollectionRatingField.php');
require_once('class.ilDataCollectionILIASRefField.php');
require_once('./Modules/DataCollection/classes/Field/Formula/class.ilDataCollectionFormulaField.php');
require_once('class.ilDataCollectionNReferenceField.php');

class ilDataCollectionCache {

        protected static $tables_cache;
        protected static $fields_cache;
        protected static $records_cache;
        protected static $record_field_cache;


        public static function getTableCache($table_id = 0) {
                if ($table_id == 0) {
                        return new ilDataCollectionTable();
                }
                $tables_cache = &self::$tables_cache;
                if (!isset($tables_cache[$table_id])) {
                        $tables_cache[$table_id] = new ilDataCollectionTable($table_id);
                }

                return $tables_cache[$table_id];
        }


        public static function getFieldCache($field_id = 0) {
                $fields_cache = &self::$fields_cache;
                if (!isset($fields_cache[$field_id])) {
                        $fields_cache[$field_id] = new ilDataCollectionField($field_id);
                }

                return $fields_cache[$field_id];
        }


        public static function getRecordCache($record_id = 0) {
                $records_cache = &self::$records_cache;
                if (!isset($records_cache[$record_id])) {
                        $records_cache[$record_id] = new ilDataCollectionRecord($record_id);
                }

                return $records_cache[$record_id];
        }


        public static function getRecordFieldCache($record, $field) {
                $fid = $field->getId();
                $rid = $record->getId();
                if (!isset(self::$record_field_cache[$rid])) {
                        self::$record_field_cache[$rid] = array();
                        self::$record_field_cache[$rid][$fid] = self::getInstance($record, $field);
                } elseif (!isset(self::$record_field_cache[$rid][$fid])) {
                        self::$record_field_cache[$rid][$fid] = self::getInstance($record, $field);
                }

                return self::$record_field_cache[$rid][$fid];
        }


        public static function getInstance($record, $field) {
                switch ($field->getDatatypeId()) {
                        case ilDataCollectionDatatype::INPUTFORMAT_RATING:
                                return new ilDataCollectionRatingField($record, $field);
                        case ilDataCollectionDatatype::INPUTFORMAT_ILIAS_REF:
                                return new ilDataCollectionILIASRefField($record, $field);
                        case ilDataCollectionDatatype::INPUTFORMAT_REFERENCE:
                                if (!$field->isNRef()) {
                                        return new ilDataCollectionReferenceField($record, $field);
                                } else {
                                        return new ilDataCollectionNReferenceField($record, $field);
                                }
                        case ilDataCollectionDatatype::INPUTFORMAT_FORMULA:
                                return new ilDataCollectionFormulaField($record, $field);
                        default:
                                return new ilDataCollectionRecordField($record, $field);
                }
        }


        public static function buildFieldFromRecord($rec) {
                $fields_cache = &self::$fields_cache;
                if (isset($fields_cache[$rec["id"]])) {
                        return $fields_cache[$rec["id"]];
                }
                $field = new ilDataCollectionField();
                $field->setId($rec["id"]);
                $field->setTableId($rec["table_id"]);
                $field->setTitle($rec["title"]);
                $field->setDescription($rec["description"]);
                $field->setDatatypeId($rec["datatype_id"]);
                $field->setRequired($rec["required"]);
                $field->setUnique($rec["is_unique"]);
                $field->setLocked($rec["is_locked"]);
                $fields_cache[$rec["id"]] = $field;

                return $field;
        }
}