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Associations between a class and a class heirarchy causes association variable duplication in PHP #599

Nava2 opened this Issue Aug 26, 2015 · 2 comments


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4 participants

Nava2 commented Aug 26, 2015

Originally reported on Google Code with ID 701

What steps will reproduce the problem?

  1. The following example demonstrates the issue:

// Here we define our base classes
class Vehicle {}
class Wheel {}

// Here we define our subclasses
class Bicycle { isA Vehicle; }
class Unicycle { isA Vehicle; }

association { 0..1 Vehicle vehicle -- 0..* Wheel wheel; }

association { 0..1 Bicycle vehicle -- 0..2 Wheel wheel; }
association { 0..1 Unicycle vehicle -- 0..1 Wheel wheel; }

  1. Notice how this declares 3 different associations with Wheel, but Wheel should always
    just have zero or one vehicle.
  2. Here's a snippet of the PHP code this generates:

class Wheel


//Wheel Associations
private $vehicle;
private $vehicle;
private $vehicle;


public function __construct()

This fails a PHP lint due to the redeclaration of the Wheel::$vehicle variable.

Reported by @CraigBryan on 2015-04-07 13:32:08


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Nava2 commented Aug 26, 2015

Once this issue is fixed, a @@@skipphpcompile flag should be removed from the following
file, so it can be included in testing:


Reported by @CraigBryan on 2015-04-08 14:16:49


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vahdat-ab commented Jan 4, 2016

It's a valid bug. This is working well in the generated code for Java. Therefore, more information about how to implement this in Php can be achieved from the generated code for Umple. The generated APIs for PHP should also be modified.

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