| /******************************************************************************** |
| * Copyright (c) 2015-2019 Contributors to the Eclipse Foundation |
| * |
| * See the NOTICE file(s) distributed with this work for additional |
| * information regarding copyright ownership. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0. |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| ********************************************************************************/ |
| |
| package org.eclipse.mdm.businessobjects.boundary; |
| |
| import java.util.List; |
| import java.util.Map; |
| |
| import javax.ejb.EJB; |
| import javax.ejb.Stateless; |
| import javax.inject.Inject; |
| |
| import org.eclipse.mdm.api.base.adapter.Attribute; |
| import org.eclipse.mdm.api.base.adapter.EntityType; |
| import org.eclipse.mdm.api.base.model.Channel; |
| import org.eclipse.mdm.api.base.model.Environment; |
| import org.eclipse.mdm.api.base.query.DataAccessException; |
| import org.eclipse.mdm.api.dflt.ApplicationContext; |
| import org.eclipse.mdm.api.dflt.EntityManager; |
| import org.eclipse.mdm.businessobjects.control.I18NActivity; |
| import org.eclipse.mdm.businessobjects.control.MDMEntityAccessException; |
| import org.eclipse.mdm.businessobjects.control.NavigationActivity; |
| import org.eclipse.mdm.businessobjects.control.SearchActivity; |
| import org.eclipse.mdm.businessobjects.utils.ServiceUtils; |
| import org.eclipse.mdm.connector.boundary.ConnectorService; |
| |
| /** |
| * ChannelService Bean implementation with available {@link Channel} operations |
| * |
| * @author Sebastian Dirsch, Gigatronik Ingolstadt GmbH |
| * |
| */ |
| @Stateless |
| public class ChannelService { |
| |
| @Inject |
| private ConnectorService connectorService; |
| @EJB |
| private I18NActivity i18nActivity; |
| @EJB |
| private NavigationActivity navigationActivity; |
| @EJB |
| private SearchActivity searchActivity; |
| |
| /** |
| * returns the matching {@link Channel}s using the given filter or all |
| * {@link Channel}s if no filter is available |
| * |
| * @param sourceName name of the source (MDM {@link Environment} name) |
| * @param filter filter string to filter the Channel result |
| * @return the found {@link Channel}s |
| */ |
| public List<Channel> getChannels(String sourceName, String filter) { |
| try { |
| ApplicationContext context = this.connectorService.getContextByName(sourceName); |
| EntityManager em = context.getEntityManager() |
| .orElseThrow(() -> new MDMEntityAccessException("Entity manager not present!")); |
| |
| if (filter == null || filter.trim().length() <= 0) { |
| return em.loadAll(Channel.class); |
| } |
| |
| if (ServiceUtils.isParentFilter(context, filter, Channel.PARENT_TYPE_CHANNELGROUP)) { |
| String id = ServiceUtils.extactIdFromParentFilter(context, filter, Channel.PARENT_TYPE_CHANNELGROUP); |
| return this.navigationActivity.getChannels(sourceName, id); |
| } |
| |
| return this.searchActivity.search(context, Channel.class, filter); |
| |
| } catch (DataAccessException e) { |
| throw new MDMEntityAccessException(e.getMessage(), e); |
| } |
| } |
| |
| /** |
| * returns a {@link Channel} identified by the given id. |
| * |
| * @param sourceName name of the source (MDM {@link Environment} name) |
| * @param channelId id of the {@link Channel} |
| * @return the matching {@link Channel} |
| */ |
| public Channel getChannel(String sourceName, String channelId) { |
| try { |
| EntityManager em = this.connectorService.getContextByName(sourceName).getEntityManager() |
| .orElseThrow(() -> new MDMEntityAccessException("Entity manager not present!")); |
| return em.load(Channel.class, channelId); |
| } catch (DataAccessException e) { |
| throw new MDMEntityAccessException(e.getMessage(), e); |
| } |
| } |
| |
| /** |
| * returns localized {@link Channel} attributes |
| * |
| * @param sourceName name of the source (MDM {@link Environment} name) |
| * @return the localized {@link Channel} attributes |
| */ |
| public Map<Attribute, String> localizeAttributes(String sourceName) { |
| return this.i18nActivity.localizeAttributes(sourceName, Channel.class); |
| } |
| |
| /** |
| * returns the localized {@link Channel} type name |
| * |
| * @param sourceName name of the source (MDM {@link Environment} name) |
| * @return the localized {@link Channel} type name |
| */ |
| public Map<EntityType, String> localizeType(String sourceName) { |
| return this.i18nActivity.localizeType(sourceName, Channel.class); |
| } |
| } |