Java tutorial
/* * Copyright 2014 johnny. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package cz.muni.exceptions.web.pages; import cz.muni.exceptions.web.components.TicketOccurrenceLabel; import cz.muni.exceptions.web.db.TicketService; import cz.muni.exceptions.web.model.Ticket; import cz.muni.exceptions.web.model.TicketOccurrence; import javax.inject.Inject; import org.apache.wicket.RestartResponseException; import org.apache.wicket.markup.html.basic.Label; import org.apache.wicket.markup.html.link.Link; import org.apache.wicket.markup.html.list.ListItem; import org.apache.wicket.markup.html.list.ListView; import org.apache.wicket.model.CompoundPropertyModel; import org.apache.wicket.model.IModel; import org.apache.wicket.model.Model; import org.apache.wicket.request.mapper.parameter.PageParameters; import org.apache.wicket.util.string.StringValue; /** * * @author Jan Ferko */ public class ExceptionDetailPage extends AbstractExceptionsPage { @Inject private TicketService ticketService; public ExceptionDetailPage(PageParameters params) { super(params); IModel<Ticket> pageModel = preparePageModel(params); setDefaultModel(pageModel); } @Override protected void onInitialize() { super.onInitialize(); add(new Label("detailMessage")); add(new Label("className")); add(new Label("stackTrace")); add(new Label("ticketClass")); add(new ListView<TicketOccurrence>("occurrences") { @Override protected void populateItem(ListItem<TicketOccurrence> item) { item.add(new TicketOccurrenceLabel("occurrence", item.getModelObject())); } }); add(new Link<Void>("back") { @Override public void onClick() { setResponsePage(ExceptionsPage.class); } }); } private IModel<Ticket> preparePageModel(PageParameters params) { StringValue idValue = params.get("ticketId"); if (idValue.isEmpty()) { getSession() .error("Ooops!! It's not possible to show ticket detail, because id of ticket wasn't provided"); throw new RestartResponseException(ExceptionsPage.class); } Long id = null; try { id = Long.parseLong(idValue.toString()); Ticket ticket = ticketService.getTicket(id); return new CompoundPropertyModel<Ticket>(ticket); } catch (NumberFormatException ex) { getSession().error("Oopps!! Ticket does not exists."); throw new RestartResponseException(ExceptionsPage.class); } catch (Exception ex) { getSession().error("Ooppss!! We have some technical difficulties. Please try later."); return Model.of(); } } }