[TASK] Refer to SimpleDataHandlerController instead of tce_db.php

Update comments in the code not to mention tce_db.php.

The tce_db.php entry point is gone since v8.
The SimpleDataHandlerController is responsible for pushing data
from request to DataHandler.

Resolves: #85600
Releases: master, 8.7
Change-Id: I6d323a9aab77ab67ff811970ff3c0f47dbf84340
Reviewed-on: https://review.typo3.org/57655
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>

typo3/sysext/backend/Classes/Clipboard/Clipboard.php

@@ -949,13 +949,8 @@ public function isElements()
         return is_array($this->clipData[$this->current]['el']) && !empty($this->clipData[$this->current]['el']);
     }
 
-    /*****************************************
-     *
-     * FOR USE IN tce_db.php:
-     *
-     ****************************************/
     /**
-     * Applies the proper paste configuration in the $cmd array send to tce_db.php.
+     * Applies the proper paste configuration in the $cmd array send to SimpleDataHandlerController (tce_db route)
      * $ref is the target, see description below.
      * The current pad is pasted
      *

typo3/sysext/backend/Configuration/Backend/Routes.php

@@ -176,7 +176,7 @@
 
     /**
      * Gateway for TCE (TYPO3 Core Engine) file-handling through POST forms.
-     * This script serves as the fileadministration part of the TYPO3 Core Engine.
+     * This script serves as the file administration part of the TYPO3 Core Engine.
      * Basically it includes two libraries which are used to manipulate files on the server.
      *
      * For syntax and API information, see the document 'TYPO3 Core APIs'

typo3/sysext/backend/Resources/Public/JavaScript/AjaxDataHandler.js

@@ -13,7 +13,8 @@
 
 /**
  * Module: TYPO3/CMS/Backend/AjaxDataHandler
- * AjaxDataHandler - Javascript functions to work with AJAX and interacting with tce_db.php
+ * Javascript functions to work with AJAX and interacting with Datahandler
+ * through \TYPO3\CMS\Backend\Controller\SimpleDataHandlerController->processAjaxRequest (record_process route)
  */
 define(['jquery',
   'TYPO3/CMS/Backend/Modal',
@@ -238,7 +239,7 @@ define(['jquery',
   };
 
   /**
-   * AJAX call to tce_db.php
+   * AJAX call to record_process route (SimpleDataHandlerController->processAjaxRequest)
    * returns a jQuery Promise to work with
    *
    * @param {Object} params

typo3/sysext/beuser/Classes/ViewHelpers/IssueCommandViewHelper.php

@@ -35,18 +35,18 @@ class IssueCommandViewHelper extends AbstractViewHelper
     public function initializeArguments()
     {
         parent::initializeArguments();
-        $this->registerArgument('parameters', 'string', 'Is a set of GET params to send to tce_db.php. Example: "&cmd[tt_content][123][move]=456" or "&data[tt_content][123][hidden]=1&data[tt_content][123][title]=Hello%20World', true);
+        $this->registerArgument('parameters', 'string', 'Is a set of GET params to send to route tce_db (SimpleDataHandlerController). Example: "&cmd[tt_content][123][move]=456" or "&data[tt_content][123][hidden]=1&data[tt_content][123][title]=Hello%20World', true);
         $this->registerArgument('redirectUrl', 'string', 'Redirect URL if any other that \TYPO3\CMS\Core\Utility\GeneralUtility::getIndpEnv(\'REQUEST_URI\') is preferred', false, '');
     }
 
     /**
-     * Returns a URL with a command to TYPO3 Core Engine (tce_db.php)
+     * Returns a URL with a command to TYPO3 Core Engine - DataHandler (route tce_db)
      *
      * @param array $arguments
      * @param \Closure $renderChildrenClosure
      * @param RenderingContextInterface $renderingContext
      *
-     * @return string URL to tce_db.php + parameters
+     * @return string URL to tce_db + parameters
      * @see \TYPO3\CMS\Backend\Utility\BackendUtility::getLinkToDataHandlerAction()
      */
     public static function renderStatic(array $arguments, \Closure $renderChildrenClosure, RenderingContextInterface $renderingContext)

typo3/sysext/core/Classes/DataHandling/DataHandler.php

@@ -59,13 +59,13 @@
  * This class was formerly known as TCEmain.
  *
  * This is the TYPO3 Core Engine class for manipulation of the database
- * This class is used by eg. the tce_db.php script which provides an the interface for POST forms to this class.
+ * This class is used by eg. the tce_db BE route (SimpleDataHandlerController) which provides an the interface for POST forms to this class.
  *
  * Dependencies:
  * - $GLOBALS['TCA'] must exist
  * - $GLOBALS['LANG'] must exist
  *
- * tce_db.php for further comments and SYNTAX! Also see document 'TYPO3 Core API' for details.
+ * Also see document 'TYPO3 Core API' for details.
  */
 class DataHandler
 {
@@ -8762,7 +8762,7 @@ public function log($table, $recuid, $action, $recpid, $error, $details, $detail
         if (!$this->enableLogging) {
             return 0;
         }
-        // Type value for tce_db.php
+        // Type value for DataHandler
         $type = 1;
         if (!$this->storeLogMessages) {
             $details = '';