/** * @Entity * @InheritanceType("SINGLE_TABLE") * @DiscriminatorColumn(name="discr", type="string") * @DiscriminatorMap({"baseuser" = "UserBundle\Entity\User", "blogUser" = "BlogBundle\Entity\User"}) */class User implements UserInterface{    ...}

use App\UserBundle\Entity\User as BaseUser;/** * @ORM\Entity */class User extends BaseUser{    ....}

 //

http://stackoverflow.com/questions/5823905/how-to-manage-single-table-inheritance-within-doctrine-2

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Based on the example from the :

/** * @Entity * @InheritanceType("SINGLE_TABLE") * @DiscriminatorColumn(name="resource_type", type="string") * @DiscriminatorMap({"article_vote" = "ArticleVote", "comment_vote" = "CommentVote"}) */class Vote{    private $id;    private $weight;}class ArticleVote extends Vote{    /** @ManyToOne(...) */    private $article;}class CommentVote extends Vote{    /** @ManyToOne(...) */    private $comment;}

Just incase someone else needs it, here is an detailed example in using Table Inheritance with Doctrine. I found it more informative than the Doctrine documentation: