Programmatic output of a property's constraints

burriad — Thu, 16 Apr 2009 11:38:44 GMT

Hi,I am looking for a way to programmatically retrieve the values of a list constraint. The example below tries to do exactly this, but does not work as expected.public List<SelectItem> getStatusValues() { PropertyDefinition pd = getDictionaryService().getProperty(MyModel.STATUS_PROP); Lis

Re: Programmatic output of a property's constraints

burriad — Thu, 16 Apr 2009 13:02:52 GMT

Life's not that hard sometimes. A little cast saves the day:


public List<SelectItem> getStatusValues() {
   PropertyDefinition pd = getDictionaryService().getProperty(MyModel.STATUS_PROP);
   List<SelectItem> result = new ArrayList<SelectItem>();
      
   for (ConstraintDefinition cd : pd.getConstraints()) {
      if (cd.getConstraint() instanceof ListOfValuesConstraint) {
            ListOfValuesConstraint lc = (ListOfValuesConstraint) cd.getConstraint()
            for (String val : lc.getAllowedValues()) {
                result.add(new SelectItem(val));
            }
       }
   }

   return result;
}
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Programmatic output of a property's constraints

Re: Programmatic output of a property's constraints