Nullable assocations for entity generator

[goetas]

Hi all!
If an entity is identified thought another entity (using @association-key), this entity can't be nullable

[guilhermeblanco]

Where is this situation applicable?
Looking at the patch seems that you are inspecting for @*ToOne(id="..."), which seems to be invalid.

[goetas]

<doctrine-mapping>
  <entity name="EntA" table="ent">
    <id name="entb" type="integer" column="entb_id" association-key="true"/>
    <one-to-one field="entb" target-entity="EntB">
      <join-columns>
        <join-column name="entb_id" referenced-column-name="id"/>
      </join-columns>
    </one-to-one>
</doctrine-mapping>

this should generate something like this

clas EntA{
  function setEntB(EntB $entb){
  }
}

but currently generate

clas EntA{
  function setEntB(EntB $entb = null){
  }
}