Question

I am facing a weird error within my codebase currently. You can see the full ZF2s project code on my github right here. <- there’s a link

I’m having a Module set up with two Entities (X and Y). Entity_X contains a reference to Entity_Y via (targetEntity=”Entity_Y”). The Error persist with the FQCN or just the CN itself.

Entity_X:
  id int PK,
  id_Y int FK,
  text varchar

Entity_Y:
  id int PK,
  text varchar

When loading Entity_Y first and then Entity_X everything is working fine. This remains true for both StandardAutoloader and ClassMapAutoloader. However: when loading Entity_X first with ClassMapAutoloader present, i will be seeing the following error:

Fatal error: Cannot redeclare class Kennzahlen\Entity\Referenzwert (Entity_Y)
in \module\Kennzahlen\src\Kennzahlen\Entity\Referenzwert.php 
on line 13

Loading Entity_X first with StandardAutoloader works without any problems, too.

Update

The Problem appears to be within ZF2s ClassMapAutoloader (or Autoloading-Mechanism in General). My Module used the ClassMapAutoloader and using this i’ve gotten the above mentioned error. When removing the ClassMapAutoloader and simply using the StandardAutoloader, the error vanished into thin air. Thanks to @ocramius and all others i’ve botheres with this 🙂

Answer 1

i have no knowledge of doctrine, but i browsed through source and i think i found issue:
https://github.com/doctrine/common/blob/master/lib/Doctrine/Common/ClassLoader.php#L224
here, this code expects that autoloader will return value evaluated to true, but that is not requirement of spl autoload mechanism, therefore autoloader can return NULL,

To check if i am correct, in in your project in doctrine replace line 224 in Doctrine/Common/ClassLoader.php

} else if ($loader[0]->{$loader[1]}($className)) {

with

} else if ($loader[0]->{$loader[1]}($className) && class_exists($className, false)) {

Ans see if issue is fixed, if i am correct – then report bug to doctrine project