Java tutorial
/** * * Copyright (C) norad.fr * * 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 fr.norad.visuwall.core.persistence.dao; import java.util.List; import java.util.Map; import javax.persistence.EntityManager; import javax.persistence.PersistenceContext; import javax.persistence.Query; import fr.norad.visuwall.api.domain.SoftwareProjectId; import fr.norad.visuwall.core.exception.NotFoundException; import fr.norad.visuwall.core.persistence.entity.SoftwareAccess; import fr.norad.visuwall.core.persistence.entity.Wall; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.stereotype.Repository; import org.springframework.transaction.annotation.Transactional; @Repository @Transactional public class WallDAOImpl implements WallDAO { private static final Logger LOG = LoggerFactory.getLogger(WallDAOImpl.class); @PersistenceContext EntityManager entityManager; @Override public Wall update(Wall wall) { Wall persistWall = entityManager.merge(wall); return persistWall; } @Override @SuppressWarnings("unchecked") public List<Wall> getWalls() { Query query = entityManager.createNamedQuery(Wall.QUERY_WALLS); List<Wall> resultList = query.getResultList(); for (Wall wall : resultList) { // TODO replace with lazy load with extended entityManager or eager request for (SoftwareAccess softwareInfo : wall.getSoftwareAccesses()) { List<SoftwareProjectId> projectNames = softwareInfo.getProjectIds(); for (SoftwareProjectId softwareProjectId : projectNames) { } List<String> projectViews = softwareInfo.getViewNames(); for (String string : projectViews) { } Map<String, String> properties = softwareInfo.getProperties(); for (String string : properties.keySet()) { } } } return resultList; } @Override public Wall find(String wallName) throws NotFoundException { Query query = entityManager.createNamedQuery(Wall.QUERY_WALLBYNAME); query.setParameter(Wall.QUERY_PARAM_NAME, wallName); Wall wall = (Wall) query.getSingleResult(); // TODO replace with lazy load with extended entityManager or eager request for (SoftwareAccess softwareInfo : wall.getSoftwareAccesses()) { softwareInfo.getProjectIds(); softwareInfo.getViewNames(); } return wall; } @Override public void deleteWall(String wallName) { Wall wall; try { wall = find(wallName); entityManager.remove(wall); } catch (NotFoundException e) { LOG.warn("No wall found in the DB to delete : " + wallName); } } }