Symfony Zend Lucene Search Multiple Tables
===

Ok I have a Symfony project and I used Zend Lucene Search framework to integrate a search on the site.   It works beautifully but it's limited to searching 1 table.   I need my users to be able to search the whole site (8 select tables) and return the results all together.   Each table has the same fields indexed.   This is the code that specifies the table and calls the query.   Is there a way to make it look through all 8 tables for results?

    public function executeIndex(sfWebRequest $request)
    {
      $this->forwardUnless($query = $request->getParameter('query'), 'home', 'index');
 
      $this->cars = Doctrine_Core::getTable('Car') ->getForLuceneQuery($query);
    }

I tried creating an array but it didn't work for me.   I am using Symfony 1.4 (Doctrine).  Thanks!