Java tutorial
/* * iteraplan is an IT Governance web application developed by iteratec, GmbH * Copyright (C) 2004 - 2014 iteratec, GmbH * * This program is free software; you can redistribute it and/or modify it under * the terms of the GNU Affero General Public License version 3 as published by * the Free Software Foundation with the addition of the following permission * added to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED * WORK IN WHICH THE COPYRIGHT IS OWNED BY ITERATEC, ITERATEC DISCLAIMS THE * WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more * details. * * You should have received a copy of the GNU Affero General Public License * along with this program; if not, see http://www.gnu.org/licenses or write to * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301 USA. * * You can contact iteratec GmbH headquarters at Inselkammerstr. 4 * 82008 Munich - Unterhaching, Germany, or at email address info@iteratec.de. * * The interactive user interfaces in modified source and object code versions * of this program must display Appropriate Legal Notices, as required under * Section 5 of the GNU Affero General Public License version 3. * * In accordance with Section 7(b) of the GNU Affero General Public License * version 3, these Appropriate Legal Notices must retain the display of the * "iteraplan" logo. If the display of the logo is not reasonably * feasible for technical reasons, the Appropriate Legal Notices must display * the words "Powered by iteraplan". */ package de.iteratec.iteraplan.presentation.dialog.common.model; import java.util.ArrayList; import java.util.Collections; import java.util.List; import org.apache.commons.lang.StringUtils; import org.springframework.validation.Errors; import org.springframework.validation.ValidationUtils; import de.iteratec.iteraplan.businesslogic.service.SpringServiceFactory; import de.iteratec.iteraplan.common.Constants; import de.iteratec.iteraplan.model.user.DataSource; import de.iteratec.iteraplan.model.user.User; import de.iteratec.iteraplan.presentation.dialog.common.ComponentMode; /** * Component model for managing a {@link User}'s datasource. */ public class RoutingDatasourceComponentModel extends AbstractComponentModelBase<User> { /** Serialization version. */ private static final long serialVersionUID = 34932718844050712L; private String selectedDataSource; public RoutingDatasourceComponentModel(ComponentMode componentMode) { super(componentMode); } public String getSelectedDataSource() { return selectedDataSource; } public List<DataSource> getAvailableDataSources() { List<DataSource> availableDataSources; List<DataSource> list = new ArrayList<DataSource>(); DataSource ds = new DataSource(); ds.setKey(Constants.MASTER_DATA_SOURCE); list.add(ds); list.addAll(SpringServiceFactory.getDataSourceService().loadDataSources()); availableDataSources = Collections.unmodifiableList(list); return availableDataSources; } public void setSelectedDataSource(String selectedDataSource) { this.selectedDataSource = selectedDataSource; } public void initializeFrom(User source) { this.selectedDataSource = source.getDataSource(); } public void update() { throw new UnsupportedOperationException(); } public void configure(User target) { if (StringUtils.isEmpty(selectedDataSource)) { throw new IllegalStateException("Must not select an empty data source"); } target.setDataSource(selectedDataSource); } public void validate(Errors errors) { ValidationUtils.rejectIfEmptyOrWhitespace(errors, "selectedDataSource", "NAME_CANNOT_BE_EMPTY"); } }