<?xml version="1.0" encoding="UTF-8"?> <doctrine-mapping xmlns="http://doctrine-project.org/schemas/orm/doctrine-mapping" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://doctrine-project.org/schemas/orm/doctrine-mapping https://raw.github.com/doctrine/doctrine2/master/doctrine-mapping.xsd"> <mapped-superclass name="SocialLibrary\ReadBundle\Entity\Book"> <id name="id" type="integer"> <generator strategy="AUTO" /> </id> <field name="volume" column="volume" type="integer" nullable="true" /> <field name="language" column="language" type="string" length="8" nullable="true" /> <field name="isbn10" column="isbn10" type="string" length="11" unique="true" nullable="true" /> <field name="isbn13" column="isbn13" type="string" length="14" unique="true" nullable="true" /> <many-to-one field="serie" target-entity="SocialLibrary\ReadBundle\Entity\Serie" inversed-by="volumes"> <join-column name="serie_id" referenced-column-name="id" /> </many-to-one> <many-to-many field="owners" target-entity="Application\Sonata\UserBundle\Entity\User"> <join-table name="book__owner"> <join-columns> <join-column name="object_id" referenced-column-name="id" /> </join-columns> <inverse-join-columns> <join-column name="owner_id" referenced-column-name="id" /> </inverse-join-columns> </join-table> </many-to-many> <many-to-many field="creators" target-entity="SocialLibrary\BaseBundle\Entity\ObjectCreator"> <join-table name="book__creator"> <join-columns> <join-column name="object_id" referenced-column-name="id" /> </join-columns> <inverse-join-columns> <join-column name="creator_id" referenced-column-name="id" /> </inverse-join-columns> </join-table> </many-to-many> </mapped-superclass> </doctrine-mapping>