是否可以将Play Framework的CRUD模块配置为遵守@Column（unique = true）注释？

public class User extends Model {
    @Email
    @Required
    @Column(unique=true)
    public String email;

Execution exception
PersistenceException occured : org.hibernate.exception.ConstraintViolationException: Could not execute JDBC batch update

In {module:crud}/app/controllers/CRUD.java (around line 100)

96:
             } catch (TemplateNotFoundException e) {

97:
                 render(\"CRUD/show.html\", type, object);

98:
             }

99:
         }


100:
         <b>object._save();</b>

101:
         flash.success(Messages.get(\"crud.saved\", type.modelName));

102:
         if (params.get(\"_save\") != null) {

103:
             redirect(request.controller + \".list\");

104:
         }

105:
         redirect(request.controller + \".show\", object._key());

106:
     }