Doctrine wont generate columns for properites inherited from mapped super class - symfony

Question

I have a mapped super class and two entities that extend that base class. I followed this docs, but when I run bin/console doctrine:schema:update both of my entities are generated only with the properties declared on the entity itself but not the ones declared in the mapped super class. What am I missing or doing wrong?
mapped super class:
<?php
namespace AppBundle\Model;
use Doctrine\ORM\Mapping as ORM;
use AppBundle\Entity\User;
/**
* #ORM\MappedSuperclass(repositoryClass="Doctrine\ORM\EntityRepository")
*/
class Comment {
/**
* #ORM\ManyToOne(targetEntity="User", inversedBy="comments")
* #ORM\JoinColumn(name="user_id", referencedColumnName="id")
*/
private $author;
/**
* #ORM\Column(name="content", type="text", length=500)
*/
private $content;
/**
* #ORM\Column(name="date", type="datetime")
*/
private $date;
// setters and getters...
}
extending entities:
<?php
namespace AppBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use AppBundle\Model\Comment;
/**
* #ORM\Entity
* #ORM\Table(name="component_comment")
*/
class ComponentComment extends Comment {
/**
* #ORM\Id
* #ORM\GeneratedValue(strategy="AUTO")
* #ORM\Column(type="integer")
*/
private $id;
/**
* #ORM\ManyToOne(targetEntity="ComponentComment", inversedBy="replies")
* #ORM\JoinColumn(name="reply_to", referencedColumnName="id")
*/
private $replyTo;
/**
* #ORM\OneToMany(targetEntity="ComponentComment", mappedBy="replyTo")
*/
private $replies;
/**
* #ORM\ManyToOne(targetEntity="Component", inversedBy="comments")
* #ORM\JoinColumn(name="component", referencedColumnName="id")
*/
private $targetComponent;
// setters and getters...
}
and
<?php
namespace AppBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use AppBundle\Model\Comment;
/**
* #ORM\Entity
* #ORM\Table(name="food_comment")
*/
class FoodComment extends Comment {
/**
* #ORM\Id
* #ORM\GeneratedValue(strategy="AUTO")
* #ORM\Column(type="integer")
*/
private $id;
/**
* #ORM\ManyToOne(targetEntity="FoodComment", inversedBy="replies")
* #ORM\JoinColumn(name="reply_to", referencedColumnName="id")
*/
private $replyTo;
/**
* #ORM\OneToMany(targetEntity="FoodComment", mappedBy="replyTo")
*/
private $replies;
/**
* #ORM\ManyToOne(targetEntity="Food", inversedBy="comments")
* #ORM\JoinColumn(name="food", referencedColumnName="id")
*/
private $targetFood;
// setters and getters...
}
And my corresponding database tables look like:
CREATE TABLE `component_comment` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`reply_to` int(11) DEFAULT NULL,
`component` int(11) DEFAULT NULL,
PRIMARY KEY (`id`),
KEY `IDX_2478D345E2B0FBEB` (`reply_to`),
KEY `IDX_2478D34549FEA157` (`component`),
CONSTRAINT `FK_2478D34549FEA157` FOREIGN KEY (`component`) REFERENCES `component` (`id`),
CONSTRAINT `FK_2478D345E2B0FBEB` FOREIGN KEY (`reply_to`) REFERENCES `component_comment` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci
CREATE TABLE `food_comment` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`reply_to` int(11) DEFAULT NULL,
`food` int(11) DEFAULT NULL,
PRIMARY KEY (`id`),
KEY `IDX_DBEB8E54E2B0FBEB` (`reply_to`),
KEY `IDX_DBEB8E54D43829F7` (`food`),
CONSTRAINT `FK_DBEB8E54D43829F7` FOREIGN KEY (`food`) REFERENCES `food` (`id`),
CONSTRAINT `FK_DBEB8E54E2B0FBEB` FOREIGN KEY (`reply_to`) REFERENCES `food_comment` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci
The columns from common properties inherited from the Comment parent class are missing. Why is wrong with my code?

Answer 1

I've fond an other solution that fits better my requirements, but I think I've figured out. I haven't tested it but very likely the problem is that the mapped super class has private properties instead of protected ones. So although they were mapped properly, the sub classes didn't inherit neither the properties nor the mappings belonging to them.

Answer 2

I think you should place the mapped superclass under AppBundle/Entity