package org.trails.component.search;

 import org.apache.tapestry.BaseComponent;

 import org.apache.tapestry.IMarkupWriter;

 import org.apache.tapestry.IRequestCycle;

 import org.apache.tapestry.annotations.InjectObject;

 import org.apache.tapestry.annotations.Parameter;

 import org.hibernate.criterion.DetachedCriteria;

 import org.hibernate.criterion.Restrictions;

 import org.trails.descriptor.IPropertyDescriptor;

 import org.trails.validation.ValidatorTranslatorService;

 public abstract class SimpleSearchField extends BaseComponent

 {

         public abstract Object getValue();

         public abstract void setValue(Object Value);

         @Parameter(required = false, defaultValue = "page.criteria")

         public abstract DetachedCriteria getCriteria();

         public abstract void setCriteria(DetachedCriteria Criteria);

         @Parameter(required = true)

         public abstract IPropertyDescriptor getPropertyDescriptor();

         public abstract void setPropertyDescriptor(IPropertyDescriptor PropertyDescriptor);

         @InjectObject("spring:validatorTranslatorService")

         public abstract ValidatorTranslatorService getValidatorTranslatorService();

         public void buildCriterion()

         {

                 if (getValue() != null)

                 {

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

                 }

         }

         @Override

         protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle)

         {

                 // TODO Auto-generated method stub

                 super.renderComponent(writer, cycle);

                 if (cycle.isRewinding())

                 {

                         buildCriterion();

                 }

         }

 }