Mon, 11 May 2020 19:09:06 +0200
adds DAO for Project entity and save/update methods
/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright 2018 Mike Becker. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * */ package de.uapcore.lightpit.dao.postgres; import de.uapcore.lightpit.dao.AbstractDao; import de.uapcore.lightpit.dao.ProjectDao; import de.uapcore.lightpit.entities.Project; import de.uapcore.lightpit.entities.User; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.util.Objects; public final class PGProjectDao extends AbstractDao<Project> implements ProjectDao { private final PGUserDao userDao; private final PreparedStatement insert; private final PreparedStatement update; public PGProjectDao(Connection connection, PGUserDao userDao) throws SQLException { super(connection.prepareStatement( "select * from lpit_project join lpit_user owner on lpit_project.owner = owner.userid")); insert = connection.prepareStatement( "insert into lpit_project (name, description, repourl, owner) values (?, ?, ?, ?)" ); update = connection.prepareStatement( "update lpit_project set name = ?, description = ?, repourl = ?, owner = ? where id = ?" ); this.userDao = userDao; } @Override public Project mapColumns(ResultSet result, String q) throws SQLException { final var proj = new Project(result.getInt(qual(q, "id"))); proj.setName(result.getString(qual(q, "name"))); proj.setDescription(result.getString(qual(q, "description"))); proj.setRepoUrl(result.getString(qual(q, "repourl"))); proj.setOwner(userDao.mapColumns(result, "owner")); return proj; } @Override public void save(Project instance) throws SQLException { Objects.requireNonNull(instance.getName()); insert.setString(1, instance.getName()); setStringOrNull(insert, 2, instance.getDescription()); setStringOrNull(insert, 3, instance.getRepoUrl()); setForeignKeyOrNull(insert, 4, instance.getOwner(), User::getUserID); insert.executeUpdate(); } @Override public boolean update(Project instance) throws SQLException { Objects.requireNonNull(instance.getName()); update.setString(1, instance.getName()); setStringOrNull(update, 2, instance.getDescription()); setStringOrNull(update, 3, instance.getRepoUrl()); setForeignKeyOrNull(update, 4, instance.getOwner(), User::getUserID); return update.executeUpdate() > 0; } }