Java tutorial
/* * Copyright 2016 Karlsruhe Institute of Technology. * * 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 edu.kit.dama.ui.admin; import com.vaadin.annotations.VaadinServletConfiguration; import com.vaadin.server.VaadinServlet; import edu.kit.dama.mdm.core.MetaDataManagement; /** * * @author jejkal */ //Set standard configuration by annotation, the actual servlet path must be configured in web.xml //@VaadinServletConfiguration(productionMode = true, ui = AdminUIMainView.class, widgetset = "edu.kit.dama.ui.admin.AppWidgetSet") public class AdminUIServlet extends VaadinServlet { @Override public void destroy() { //destroy also all metadata management instances on redeployment in order to close all database connections MetaDataManagement.getMetaDataManagement().destroy(); super.destroy(); } }