/** static */
 function saveBlob($id, $name, $blob)
 {
     $obj = new sotf_Blob();
     $obj->set('object_id', $id);
     $obj->set('name', $name);
     $obj->find();
     if ($obj->exists()) {
         if ($blob) {
             $obj->setBlob('data', $blob);
         } else {
             $obj->delete();
         }
     } else {
         if ($blob) {
             $obj->create();
             $obj->setBlob('data', $blob);
         }
         // else nothing to do!
     }
 }
 /** Static: saves the blob for the given object ('id') under the given name. */
 function saveBlob($id, $name, $blob)
 {
     $obj = new sotf_Blob();
     //debug("saving blob", substr($blob, 0, 40));
     $obj->set('object_id', $id);
     $obj->set('name', $name);
     $obj->find();
     $obj->set('data', $blob);
     if ($obj->exists()) {
         if ($blob) {
             $obj->update();
         } else {
             $obj->delete();
         }
     } else {
         if ($blob) {
             $obj->create();
         }
         // else nothing to do!
     }
 }