package org.trails.component.search;

 import java.lang.reflect.Constructor;

 import org.apache.commons.lang.ClassUtils;

 import org.apache.tapestry.form.translator.NumberTranslator;

 import org.hibernate.criterion.Restrictions;

 import org.trails.exception.TrailsRuntimeException;

 public abstract class NumberSearchField extends SimpleSearchField

 {

         public Object getTypeSpecificValue()

         {

                 /**

                  * Warning: dorky code ahead. Need to take what will be some

                  * subclass Number and convert it to the right specific type.

                  * Since all Number subclasses have a String constructor, this will work

                  * @note: The Translator should take care of this.

                  **/

                 try

                 {

                         Class type = ClassUtils.primitiveToWrapper(getPropertyDescriptor().getPropertyType());

                         Constructor cons = type.getConstructor(new Class[]{String.class});

                         return cons.newInstance(getValue().toString());

                 }

                 catch (Exception ex)

                 {

                         throw new TrailsRuntimeException(ex);

                 }

         }

         public NumberTranslator getTranslator()

         {

                 NumberTranslator numberTranslator = (NumberTranslator) getValidatorTranslatorService().getTranslator(getPropertyDescriptor());

                 numberTranslator.setOmitZero(true);

                 return numberTranslator;

         }

         @Override

         public void buildCriterion()

         {

                 if (getValue() != null)

                 {

                         getCriteria().add(Restrictions.eq(getPropertyDescriptor().getName(), getTypeSpecificValue()));

                 }

         }

 }