diff --git a/files/commonfiles/class/Common/TableChecker.php b/files/commonfiles/class/Common/TableChecker.php
deleted file mode 100644
index b1f73a02..00000000
--- a/files/commonfiles/class/Common/TableChecker.php
+++ /dev/null
@@ -1,257 +0,0 @@
-<?php
-
-namespace XoopsModules\Modulebuilder\Common;
-
-/*
- You may not change or alter any portion of this comment or credits
- of supporting developers from this source code or any supporting source code
- which is considered copyrighted (c) material of the original comment or credit authors.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- */
-
-use XoopsModules\Modulebuilder\Common;
-
-/**
- * Class to compare current DB table structure with sql/mysql.sql
- *
- * @category  Table Checker
- * @author    Goffy <webmmaster@wedega.com>
- * @copyright 2021 XOOPS Project (https://xoops.org)
- * @license   GNU GPL 2 or later (https://www.gnu.org/licenses/gpl-2.0.html)
- * @link      https://xoops.org
- */
-
-class TableChecker extends \XoopsObject
-{
-
-    /**
-     * @var mixed
-     */
-    private $after = null;
-
-    /**
-     * @var mixed
-     */
-    private $mydirname = null;
-
-    /**
-     * @var mixed
-     */
-    private $result = [];
-
-    /**
-     * @var mixed
-     */
-    private $checktype = null;
-    public const CHECKTYPE_REPORT = 0; //report only
-    public const CHECKTYPE_UPDATE = 1; //update only
-    public const CHECKTYPE_UPDATE_REPORT = 2; //update and report
-
-
-    /**
-     * @param \XoopsModules\Modulebuilder\Common\TableChecker|null
-     * @param int $checktype
-     */
-    public function __construct($mydirname, $checktype = 0)
-    {
-        $this->mydirname = $mydirname;
-        $this->checktype = $checktype;
-        $this->result = [];
-    }
-
-    /**
-     *
-     */
-    public function processSQL()
-    {
-
-        $tabledefs = $this->readSQLFile();
-
-        $this->result[] = 'Tables found in sql:' . \count($tabledefs);
-
-        foreach ($tabledefs as $tabledef) {
-            //echo '<br>' . $tabledef['name'];
-            //check whether table exist or not
-            $table   = $tabledef['name'];
-            $check   = $GLOBALS['xoopsDB']->queryF("SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA=DATABASE() AND TABLE_NAME='$table'");
-            $numRows = $GLOBALS['xoopsDB']->getRowsNum($check);
-            if ($numRows) {
-                //table exist
-                $this->result[] = 'Table exist:' . $table;
-                $ret = $this->checkTableFields($table, $tabledef['fields']);
-            } else {
-                if ($this::CHECKTYPE_UPDATE == $this->checktype || $this::CHECKTYPE_UPDATE_REPORT == $this->checktype) {
-                    // create new table
-                    $sql = $tabledef['sql'];
-                    if ($this->result = $GLOBALS['xoopsDB']->queryF($sql)) {
-                        $this->result[] = 'Table created:' . $table;
-                    } else {
-                        \xoops_error($GLOBALS['xoopsDB']->error() . '<br>' . $sql);
-                        $this->result[] = 'Error creating table:' . $table;
-                    }
-                } else {
-                    $this->result[] = 'Table do not exist:' . $table . ' (creation not activated)';
-                }
-            }
-        }
-
-        if (self::CHECKTYPE_REPORT == $this->checktype || self::CHECKTYPE_UPDATE_REPORT == $this->checktype) {
-            return $this->result;
-        }
-    }
-
-    /**
-     *
-     */
-    private function readSQLFile()
-    {
-        $tabledefs = [];
-
-        $moduleHandler = \xoops_getHandler('module');
-        $module = $moduleHandler->getByDirname($this->mydirname);
-        $module->loadInfoAsVar($this->mydirname);
-        $sqlfile = $module->getInfo('sqlfile');
-        $sql_file_path = \XOOPS_ROOT_PATH . '/modules/' . $this->mydirname . '/' . $sqlfile[\XOOPS_DB_TYPE];
-
-        if (\file_exists($sql_file_path)) {
-            require_once \XOOPS_ROOT_PATH . '/class/database/sqlutility.php';
-            $sqlutil = new \SqlUtility();
-            $pieces = [];
-            $sql_query = \trim(file_get_contents($sql_file_path));
-            $sqlutil->splitMySqlFile($pieces, $sql_query);
-
-            $countTable = 0;
-            foreach ($pieces as $piece) {
-                $singleSql = $sqlutil->prefixQuery($piece, $GLOBALS['xoopsDB']->prefix());
-                $lines = \preg_split('/\r\n|\n|\r/', $piece);
-                //var_dump($lines);
-                $needle1 = 'create table';
-                if ($needle1 == \mb_strtolower($singleSql[1])) {
-                    $countLine = 0;
-                    $tabledefs[$countTable]['sql'] = $singleSql[0];
-                    $tabledefs[$countTable]['name'] = $GLOBALS['xoopsDB']->prefix() . '_' . $singleSql[4];
-                    $this->after = '';
-                    foreach($lines as $line) {
-                        if ($countLine > 0) {
-                            $needle2 = 'primary key';
-                            $needle3 = 'unique key';
-                            $needle4 = 'key';
-                            if (0 === \stripos(\trim($line), $needle2)) {
-                                $tabledefs[$countTable][$needle2] = $line;
-                            } elseif (0 === \stripos(\trim($line), $needle3)) {
-                                $tabledefs[$countTable][$needle3] = $line;
-                            } elseif (0 === \stripos(\trim($line), $needle4)) {
-                                $tabledefs[$countTable][$needle4] = $line;
-                            } else {
-                                if (\strpos($line, '`') > 0) {
-                                    $tabledefs[$countTable]['fields'][] = $this->extractField($line);
-                                }
-                            }
-                        }
-                        $countLine++;
-                    }
-                    $countTable++;
-                }
-            }
-            //var_dump($tabledefs);
-        } else {
-            $this->result[] = 'File do not exist:' . $sql_file_path;
-        }
-
-        return $tabledefs;
-    }
-
-
-    private function extractKey($line) {
-        //todo: split string into single keys
-        $needle = '(';
-        $key_text = \substr($line, \strpos($line, $needle) + 1);
-        $needle = ')';
-        $key_text = \substr($key_text, 0, \strpos($key_text, $needle));
-
-        return $key_text;
-
-    }
-
-    private function extractField($line) {
-        //todo
-        $counter = 0;
-        $clean = mb_substr(\trim($line), 0, -1);
-        $params = \array_values(\array_filter(\explode(' ', $clean)));
-        $field['sql'] = $clean;
-        $field['name'] = \trim($params[$counter], '`');
-        $counter++;
-        $field['type'] = $params[$counter];
-        $counter++;
-        if ('unsigned' == \mb_strtolower($params[$counter])) {
-            $field['unsigned'] = $params[$counter];
-            $counter++;
-        }
-        if ('not' == \mb_strtolower($params[$counter]) && 'null' == \mb_strtolower($params[$counter + 1])) {
-            $field['null'] = $params[$counter] . ' ' . $params[$counter + 1];
-            $counter = $counter+2;
-        }
-        if (\count($params) > $counter) {
-            if ('auto_increment' == \mb_strtolower($params[$counter])) {
-                $field['auto_increment'] = $params[$counter];
-                $counter++;
-            }
-        }
-        if (\count($params) > $counter) {
-            if ('default' == \mb_strtolower($params[$counter])) {
-                $field['default'] = $params[$counter] . ' ' . $params[$counter + 1];
-                $counter = $counter + 2;
-            }
-        }
-
-        $field['after'] = $this->after;
-        $this->after = $field['name'];
-
-        return $field;
-
-    }
-
-    private function checkTableFields($table, $fields)
-    {
-        //to be created
-        foreach ($fields as $field) {
-            //check whether column exist or not
-            $fieldname = $field['name'];
-            $check     = $GLOBALS['xoopsDB']->queryF("SHOW COLUMNS FROM `$table` LIKE '$fieldname'");
-            $numRows   = $GLOBALS['xoopsDB']->getRowsNum($check);
-            if ($numRows) {
-                //field exist
-                $this->checkField($table, $field);
-            } else {
-                if (self::CHECKTYPE_UPDATE == $this->checktype || self::CHECKTYPE_UPDATE_REPORT == $this->checktype) {
-                    // create new field
-                    $sql = "ALTER TABLE `$table` ADD " . $field['sql'];
-                    if ('' !== (string)$field['after']) {
-                        $sql .=  ' AFTER `' . $field['after'] . '`;';
-                    }
-                    if ($result = $GLOBALS['xoopsDB']->queryF($sql)) {
-                        $this->result[] = 'Field added:' . $fieldname;
-                    } else {
-                        \xoops_error($GLOBALS['xoopsDB']->error() . '<br>' . $sql);
-                        $this->result[] = "Error when adding '$fieldname' to table '$table'.";
-                    }
-                } else {
-                    $this->result[] = 'Field do not exist:' . $fieldname . ' (creation not activated)';
-                }
-            }
-        }
-
-        return true;
-    }
-
-    private function checkField($table, $field)
-    {
-        //to be created
-        $this->result[] = 'Field exist:' . $field['name'] . ' - no changes';
-
-        return true;
-    }
-}