title: How to override AddressImpl in Broadleaf
body: <p>I need to remove the <code>nullable="false"</code> constraint from the <code>POSTAL_CODE</code> field in <a href="http://grepcode.com/file/repo1.maven.org/maven2/org.broadleafcommerce/broadleaf-profile/2.0.0-GA/org/broadleafcommerce/profile/core/domain/AddressImpl.java" rel="nofollow">org.broadleafcommerce.profile.core.domain.AddressImpl</a>. I tried creating an orm.xml with:</p>
  
  <pre><code>&lt;entity class="org.broadleafcommerce.profile.core.domain.AddressImpl"&gt;
        &lt;attribute-override name="postalCode"&gt;
          &lt;column name="POSTAL_CODE" nullable="true" /&gt;
      &lt;/attribute-override&gt;
  &lt;/entity&gt;
  </code></pre>
  
  <p>No luck... I'm trying hard not to create a brand new <code>BLC_ADDRESS</code> table because that just seems redundant... How can I override this column and remove that constraint?</p>