class acmeReportItem extends eZPersistentObject
{
    public static function definition()
    {
        return array(
            'fields' => array(
                'id'      => array( 'name' => 'ID', 'datatype' => 'integer', 'default' => 0, 'required' => true ),
                'user_id' => array( 'name' => 'UserID', 'datatype' => 'integer', 'default' => 0, 'required' => true ),
                'status'  => array( 'name' => 'Status', 'datatype' => 'string', 'default' => 'open', 'required' => true ),
                'amount'  => array( 'name' => 'Amount', 'datatype' => 'integer', 'default' => 0, 'required' => true ),
                'created' => array( 'name' => 'Created', 'datatype' => 'integer', 'default' => 0, 'required' => true ) ),
            'keys' => array( 'id' ),
            'increment_key' => 'id',
            'function_attributes' => array( 'user' => 'user' ),
            'class_name' => 'acmeReportItem',
            'sort' => array( 'created' => 'desc' ),
            'name' => 'acme_report_item' );
    }

    public function user()
    {
        return eZUser::fetch( $this->attribute( 'user_id' ) );
    }
}

eZPersistentObject::fetchObject( $def, $fieldFilters, $conds, $asObject = true, $grouping = null, $customFields = null );
eZPersistentObject::fetchObjectList( $def, $fieldFilters = null, $conds = array(), $sorts = null, $limit = null,
                                     $asObject = true, $grouping = false, $customFields = null,
                                     $customTables = null, $customConds = null );
eZPersistentObject::count( $def, $conds = null, $field = null );

$item = new acmeReportItem( array( 'user_id' => $userID, 'status' => 'open', 'amount' => 2, 'created' => time() ) );
$item->store();                                   // insert; 'id' is set from increment_key
$item->setAttribute( 'amount', 3 );
$item->sync();                                    // store only when an attribute changed (dirty data)
$item->remove();                                  // delete this row
eZPersistentObject::removeObject( acmeReportItem::definition(), array( 'user_id' => (int)$userID ) );