Mercurial > hg > LightPIT / file revision

 /*

  * 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.ComponentDao;

 import de.uapcore.lightpit.dao.Functions;

 import de.uapcore.lightpit.entities.Component;

 import de.uapcore.lightpit.entities.Project;

 import de.uapcore.lightpit.entities.User;

 import de.uapcore.lightpit.types.WebColor;

 import java.sql.Connection;

 import java.sql.PreparedStatement;

 import java.sql.ResultSet;

 import java.sql.SQLException;

 import java.util.ArrayList;

 import java.util.List;

 import java.util.Objects;

 public final class PGComponentDao implements ComponentDao {

     private final PreparedStatement insert, update, list, find;

     public PGComponentDao(Connection connection) throws SQLException {

         list = connection.prepareStatement(

                 "select id, name, color, ordinal, description, " +

                         "userid, username, givenname, lastname, mail " +

                         "from lpit_component " +

                         "left join lpit_user on lead = userid " +

                         "where project = ? " +

                         "order by ordinal desc, lower(name) desc");

         find = connection.prepareStatement(

                 "select id, name, color, ordinal, description, " +

                         "userid, username, givenname, lastname, mail " +

                         "from lpit_component " +

                         "left join lpit_user on lead = userid " +

                         "where id = ? ");

         insert = connection.prepareStatement(

                 "insert into lpit_component (project, name, color, ordinal, description, lead) values (?, ?, ?, ?, ?, ?)"

         );

         update = connection.prepareStatement(

                 "update lpit_component set name = ?, color = ?, ordinal = ?, description = ?, lead = ? where id = ?"

         );

     }

     private static Component mapColumns(ResultSet result) throws SQLException {

         final var component = new Component(result.getInt("id"));

         component.setName(result.getString("name"));

         try {

             component.setColor(new WebColor(result.getString("color")));

         } catch (IllegalArgumentException ex) {

             // if someone tempered with the database we default the color to black

             component.setColor(new WebColor("000000"));

         }

         component.setOrdinal(result.getInt("ordinal"));

         component.setDescription(result.getString("description"));

         component.setLead(PGUserDao.mapColumns(result));

         return component;

     }

     @Override

     public void save(Component instance, Project project) throws SQLException {

         Objects.requireNonNull(instance.getName());

         insert.setInt(1, project.getId());

         insert.setString(2, instance.getName());

         insert.setString(3, instance.getColor().getHex());

         insert.setInt(4, instance.getOrdinal());

         Functions.setStringOrNull(insert, 5, instance.getDescription());

         Functions.setForeignKeyOrNull(insert, 6, instance.getLead(), User::getId);

         insert.executeUpdate();

     }

     @Override

     public boolean update(Component instance) throws SQLException {

         if (instance.getId() < 0) return false;

         Objects.requireNonNull(instance.getName());

         Objects.requireNonNull(instance.getColor());

         update.setString(1, instance.getName());

         update.setString(2, instance.getColor().getHex());

         update.setInt(3, instance.getOrdinal());

         Functions.setStringOrNull(update, 4, instance.getDescription());

         Functions.setForeignKeyOrNull(update, 5, instance.getLead(), User::getId);

         update.setInt(6, instance.getId());

         return update.executeUpdate() > 0;

     }

     @Override

     public List<Component> list(Project project) throws SQLException {

         list.setInt(1, project.getId());

         List<Component> components = new ArrayList<>();

         try (var result = list.executeQuery()) {

             while (result.next()) {

                 components.add(mapColumns(result));

             }

         }

         return components;

     }

     @Override

     public Component find(int id) throws SQLException {

         find.setInt(1, id);

         try (var result = find.executeQuery()) {

             if (result.next()) {

                 return mapColumns(result);

             } else {

                 return null;

             }

         }

     }

 }