neither latitude nor longitude filled on persist.

[oopsFrogs]

I don't know this is a issue or not, but just can't find any answer about it, please help:

I used class table inheritance for my entity:

 // ACME\CommonBundle\Entity\Location.php

namespace ACME\CommonBundle\Entity;

use Doctrine\ORM\Mapping as ORM,
    Symfony\Component\Validator\Constraints as Assert,
    Vich\GeographicalBundle\Annotation as Vich;

/**
 * @ORM\Entity
 * @ORM\InheritanceType("JOINED")
  * @ORM\DiscriminatorColumn(name="discr", type="string")
  * @ORM\DiscriminatorMap({
  *         "branch" = "\ACME\BranchBundle\Entity\Branch", 
  *         "place"  = "Place"
  * })
  * 
  * @Vich\Geographical
  * 
  */
 class Location
 {
      ......

     /**
      * @ORM\Column(type="decimal", scale=7, nullable=true)
      * @var decimal
      */
     protected $latitude;

     /**
      * @ORM\Column(type="decimal", scale=7, nullable=true)
      * @var decimal
      */
     protected $longitude;

      ......

     /**
      * Set latitude
      *
      * @param decimal $latitude
      */
     public function setLatitude($latitude)
     {
         $this->latitude = $latitude;
     }

     /**
      * Set longitude
      *
      * @param decimal $longitude
      */
     public function setLongitude($longitude)
     {
         $this->longitude = $longitude;
     }

      /**
       * @Vich\GeographicalQuery
       */
      public function getFullAddress()
      {
          return sprintf(
              '%s, %s %s',
              $this->address,
               implode(', ', $this->geography->getFullGeographyHierarchyArray()),
              $this->zipCode
          );
     }
 }

//ACME\BranchBundle\Entity\Branch.php

namespace ACME\BranchBundle\Entity;

use ACME\CommonBundle\Entity\Location,
    ......

/**
 * ACME\BranchBundle\Entity\Branch
......
 */
class Branch extends Location
{
    ......
}

When I create and persist new Branch entity, the latitude and longitude all remained null, did I miss anything?

PS. I crawled around web and found than I needed some 'key' to use the Google Geocode API, but the documentation of this bundle didn't mention about it, was that what I missed?