ZP-1197 Implement StripData() for HierarchyCache + MemoryChangesWrapper.

Released under the Affero GNU General Public License (AGPL) version 3.

src/lib/core/changesmemorywrapper.php

@@ -403,4 +403,19 @@ class ChangesMemoryWrapper extends HierarchyCache implements IImportChanges, IEx
         $this->changes = array();
         $this->step = 0;
     }
+
+    /**
+     * Removes internal data from the object, so this data can not be exposed.
+     *
+     * @access public
+     * @return boolean
+     */
+    public function StripData() {
+        unset($this->changes);
+        unset($this->step);
+        unset($this->destinationImporter);
+        unset($this->exportImporter);
+
+        return parent::StripData();
+    }
 }

src/lib/core/hierarchycache.php

@@ -181,6 +181,21 @@ class HierarchyCache {
         return sprintf("HierarchyCache is %s - Cached objects: %d", ((isset($this->cacheById))?"up":"down"), ((isset($this->cacheById))?count($this->cacheById):"0"));
     }
 
+    /**
+     * Removes internal data from the object, so this data can not be exposed.
+     *
+     * @access public
+     * @return boolean
+     */
+    public function StripData() {
+        unset($this->changed);
+        unset($this->cacheByIdOld);
+        foreach ($this->cacheById as $id => $folder) {
+            $folder->StripData();
+        }
+        return true;
+    }
+
     /**
      * Returns objects which should be persistent
      * called before serialization