package org.trails.component;

 import org.apache.commons.logging.Log;

 import org.apache.commons.logging.LogFactory;

 import org.apache.tapestry.annotations.ComponentClass;

 import org.apache.tapestry.annotations.InjectObject;

 import org.apache.tapestry.annotations.Parameter;

 import org.apache.tapestry.form.IPropertySelectionModel;

 import org.hibernate.criterion.DetachedCriteria;

 import org.trails.persistence.HibernatePersistenceService;

 /**

  * This guy interacts with persistence service to produce a Select

  * containing all the elements of the PropertyDescriptor's type.  If

  * a criteria is specified, it will filter the list by it.

  */

 @ComponentClass(allowBody = false, allowInformalParameters = true)

 public abstract class HibernateAssociationSelect extends AssociationSelect

 {

         private static final Log LOG = LogFactory.getLog(HibernateAssociationSelect.class);

         /**

          * @todo: remove when the components reuse issue goes away

          */

         @InjectObject("spring:persistenceService")

         public abstract HibernatePersistenceService getHibernatePersistenceService();

         /**

          * @todo: remove when the components reuse issue goes away

          */

         @Override

         public HibernatePersistenceService getPersistenceService()

         {

                 return getHibernatePersistenceService();

         }

         @Parameter(required = false)

         public abstract DetachedCriteria getCriteria();

         @Override

         public IPropertySelectionModel buildSelectionModel()

         {

                 if (LOG.isDebugEnabled())

                 {

                         LOG.debug("Building propertySelectionModel for " + getClassDescriptor().getDisplayName());

                 }

                 DetachedCriteria criteria = getCriteria() != null ? getCriteria() : DetachedCriteria.forClass(getClassDescriptor().getType());

                 IdentifierSelectionModel selectionModel = new IdentifierSelectionModel(

                         getPersistenceService().getInstances(getClassDescriptor().getType(), criteria),

                         getClassDescriptor().getIdentifierDescriptor().getName(),

                         isAllowNone());

                 selectionModel.setNoneLabel(getNoneLabel());

                 return selectionModel;

         }

 }