教义symfony 1.4的小innerJoin问题

Unknown relation alias Artikelkategorie

Artikelkategorie:
connection: doctrine
tableName: artikelkategorie
columns:
id:
  type: integer(4)
  fixed: false
  unsigned: true
  primary: true
  autoincrement: true
superid:
  type: integer(4)
  fixed: false
  unsigned: true
  primary: false
  notnull: true
  autoincrement: false
branche_id:
  type: integer(4)
  fixed: false
  unsigned: true
  primary: false
  notnull: true
  autoincrement: false
Portfolio:
connection: doctrine
tableName: portfolio
columns:
artikel_id:
  type: integer(4)
  fixed: false
  unsigned: true
  primary: true
  autoincrement: false
markt_id:
  type: integer(4)
  fixed: false
  unsigned: true
  primary: true
  autoincrement: false 
relations:
Artikel:
  local: id
  foreign: zustand_id
  type: many
Portfolio:
  local: id
  foreign: zustand_id
  type: many

                $this->unt_cat_list = Doctrine_Query::create()
                    ->select(\'p.*, a.*\')
                    ->from(\'portfolio p\')
                    ->innerJoin(\'p.Artikelkategorie a\')
                    ->Where(\'p.markt_id = ? \', array(2))
                    ->Where(\'a.superid = ?\', array(1))
                    ->Where(\'a.branche_id = ?\', array(2))
                    ->execute();

<?php foreach ($unt_cat_list as $cat_list1): ?>
<a href=\"<?php echo url_for(\'shop/category\') . \'/\' . \'id/\' . $cat_list1->getMarktId()?>\"><?php echo $cat_list1->getMarktId() ?></a>
<?php endforeach; ?>