gistfile1.php

<?php

namespace Sonata\Bundle\DemoBundle\Entity;

use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Security\Acl\Model\DomainObjectInterface;

/**
 * @ORM\Entity
 * @ORM\Table(name="test_color")
 */
class Color implements DomainObjectInterface
{
    /**
     * @ORM\Id
     * @ORM\Column(type="string")
     * @ORM\GeneratedValue(strategy="NONE")
     */
    protected $r;

    /**
     * @ORM\Id
     * @ORM\Column(type="string")
     * @ORM\GeneratedValue(strategy="NONE")
     */
    protected $g;

    /**
     * @ORM\Id
     * @ORM\Column(type="string")
     * @ORM\GeneratedValue(strategy="NONE")
     */
    protected $b;

    /**
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="NONE")
     * @ORM\ManyToOne(targetEntity="Material", cascade={"persist"}, fetch="EAGER")
     */
    protected $material;

    /**
     * @param mixed $b
     */
    public function setB($b)
    {
        $this->b = $b;
    }

    /**
     * @return mixed
     */
    public function getB()
    {
        return $this->b;
    }

    /**
     * @param mixed $material
     */
    public function setMaterial(Material $material)
    {
        $this->material = $material;
    }

    /**
     * @return mixed
     */
    public function getMaterial()
    {
        return $this->material;
    }

    /**
     * @param mixed $g
     */
    public function setG($g)
    {
        $this->g = $g;
    }

    /**
     * @return mixed
     */
    public function getG()
    {
        return $this->g;
    }

    /**
     * @param mixed $r
     */
    public function setR($r)
    {
        $this->r = $r;
    }

    /**
     * @return mixed
     */
    public function getR()
    {
        return $this->r;
    }

    /**
     * Returns a unique identifier for this domain object.
     *
     * @return string
     */
    public function getObjectIdentifier()
    {
        return sprintf("%d-%d-%d-%d", $this->getR(), $this->getG(), $this->getB(), $this->getMaterial() ? $this->getMaterial()->getId() : null);
    }

    /**
     * @return string
     */
    public function __toString()
    {
        return  $this->getObjectIdentifier() ?: "n/a";
    }
}