behavior-aggregate-schema.xml

<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>
<database name="bookstore-behavior" defaultIdMethod="native" package="behavior.aggregate" namespace="Propel\Tests\Bookstore\Behavior">

    <table name="aggregate_post" phpName="AggregatePost">
        <column name="id" required="true" primaryKey="true" autoIncrement="true" type="INTEGER"/>
        <behavior name="aggregate_column">
            <parameter name="name" value="nb_comments"/>
            <parameter name="expression" value="COUNT(id)"/>
            <parameter name="foreign_table" value="aggregate_comment"/>
        </behavior>
    </table>

    <table name="aggregate_comment" phpName="AggregateComment">
        <column name="id" required="true" primaryKey="true" autoIncrement="true" type="INTEGER"/>
        <column name="post_id" type="INTEGER"/>
        <foreign-key foreignTable="aggregate_post" onDelete="setnull" onUpdate="cascade">
            <reference local="post_id" foreign="id"/>
        </foreign-key>
    </table>

    <table name="aggregate_poll" phpName="AggregatePoll">
        <column name="id" required="true" primaryKey="true" autoIncrement="true" type="INTEGER"/>

        <behavior id="aggregate_total_score" name="aggregate_column">
            <parameter name="name" value="total_score"/>
            <parameter name="expression" value="SUM(score)"/>
            <parameter name="foreign_table" value="aggregate_item"/>
        </behavior>

        <behavior id="aggregate_nb_votes" name="aggregate_column">
            <parameter name="name" value="nb_votes"/>
            <parameter name="expression" value="COUNT(score)"/>
            <parameter name="foreign_table" value="aggregate_item"/>
        </behavior>
    </table>

    <table name="aggregate_item" phpName="AggregateItem">
        <column name="id" required="true" primaryKey="true" autoIncrement="true" type="INTEGER"/>
        <column name="score" defaultValue="0" type="INTEGER"/>
        <column name="poll_id" type="INTEGER"/>
        <foreign-key foreignTable="aggregate_poll" onDelete="setnull" onUpdate="cascade">
            <reference local="poll_id" foreign="id"/>
        </foreign-key>
    </table>

</database>