chamilo-lms2/vendor/gedmo/doctrine-extensions/tests/Gedmo/Mapping/Driver/Xml/Mapping.Fixture.Xml.NestedTree.dcm.xml

<?xml version="1.0" encoding="UTF-8"?>

<doctrine-mapping xmlns="http://doctrine-project.org/schemas/orm/doctrine-mapping"
                  xmlns:gedmo="http://gediminasm.org/schemas/orm/doctrine-extensions-mapping">

    <entity name="Mapping\Fixture\Xml\NestedTree" table="nested_trees">

        <indexes>
            <index name="name_idx" columns="name"/>
        </indexes>

        <id name="id" type="integer" column="id">
            <generator strategy="AUTO"/>
        </id>

        <field name="name" type="string" length="128"/>
        <field name="left" column="lft" type="integer">
            <gedmo:tree-left/>
        </field>
        <field name="right" column="rgt" type="integer">
            <gedmo:tree-right/>
        </field>
        <field name="root" type="integer">
            <gedmo:tree-root/>
        </field>
        <field name="level" column="lvl" type="integer">
            <gedmo:tree-level/>
        </field>

        <many-to-one field="parent" target-entity="NestedTree">
            <join-column name="parent_id" referenced-column-name="id" on-delete="CASCADE"/>
            <gedmo:tree-parent/>
        </many-to-one>

        <gedmo:tree type="nested"/>

    </entity>

</doctrine-mapping>