AuthCode.orm.xml

<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">
    <entity name="Trikoder\Bundle\OAuth2Bundle\Model\AuthCode" table="oauth2_auth_code">
        <id name="identifier" type="string" length="80">
            <options>
                <option name="fixed">true</option>
            </options>
        </id>
        <field name="expiry" type="datetime" />
        <field name="userIdentifier" type="string" length="128" nullable="true" />
        <field name="scopes" type="oauth2_scope" nullable="true" />
        <field name="revoked" type="boolean" />
        <many-to-one field="client" target-entity="Trikoder\Bundle\OAuth2Bundle\Model\Client">
            <join-column name="client" referenced-column-name="identifier" nullable="false" />
        </many-to-one>
    </entity>
</doctrine-mapping>