public void removeMapping(Place place, Employee employee) {
   List<Mapping> mappings =
       database
           .find(Mapping.class)
           .add(MobeelizerRestrictions.eq("employee", employee.getGuid()))
           .add(MobeelizerRestrictions.eq("place", place.getGuid()))
           .list();
   for (int i = 0; i < mappings.size(); ++i) {
     database.delete(Mapping.class, mappings.get(i).getGuid());
   }
 }
  public void map(Place place, Employee employee) {
    List<Mapping> mappings =
        database
            .find(Mapping.class)
            .add(MobeelizerRestrictions.eq("employee", employee.getGuid()))
            .list();
    for (int i = 0; i < mappings.size(); ++i) {
      if (mappings.get(i).getPlace() != null) {
        database.delete(Mapping.class, mappings.get(i).getGuid());
      }
    }

    Mapping mapping = new Mapping();
    mapping.setEmployee(employee.getGuid());
    mapping.setPlace(place.getGuid());
    mapping.setCreatedBy(Engine.getInstance().getUserIdentyfication().getCurrentUser().getId());
    mapping.setCreationDate(new Date());
    database.save(mapping);
  }
 public void removeMapping(Mapping mapping) {
   database.delete(Mapping.class, mapping.getGuid());
   Log.i("Mapper", "mapping deleted");
 }