LightPIT: src/main/java/de/uapcore/lightpit/dao/postgres/PGVersionDao.java@33b6843fdf8a

     1 /*

     2  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

     3  *

     4  * Copyright 2018 Mike Becker. All rights reserved.

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     6  * Redistribution and use in source and binary forms, with or without

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    12  *   2. Redistributions in binary form must reproduce the above copyright

    13  *      notice, this list of conditions and the following disclaimer in the

    14  *      documentation and/or other materials provided with the distribution.

    15  *

    16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

    17  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

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    19  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE

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    25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

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    29 package de.uapcore.lightpit.dao.postgres;

    31 import de.uapcore.lightpit.dao.VersionDao;

    32 import de.uapcore.lightpit.entities.Project;

    33 import de.uapcore.lightpit.entities.Version;

    34 import de.uapcore.lightpit.entities.VersionStatus;

    36 import java.sql.Connection;

    37 import java.sql.PreparedStatement;

    38 import java.sql.ResultSet;

    39 import java.sql.SQLException;

    40 import java.util.ArrayList;

    41 import java.util.List;

    42 import java.util.Objects;

    44 public final class PGVersionDao implements VersionDao {

    46     private final PreparedStatement insert, update, list, find;

    48     public PGVersionDao(Connection connection) throws SQLException {

    49         list = connection.prepareStatement(

    50                 "select versionid, project, name, ordinal, status " +

    51                         "from lpit_version " +

    52                         "where project = ? " +

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

    55         find = connection.prepareStatement(

    56                 "select versionid, project, name, ordinal, status " +

    57                         "from lpit_version " +

    58                         "where versionid = ?");

    60         insert = connection.prepareStatement(

    61                 "insert into lpit_version (project, name, ordinal, status) values (?, ?, ?, ?::version_status)"

    62         );

    63         update = connection.prepareStatement(

    64                 "update lpit_version set name = ?, ordinal = ?, status = ?::version_status where versionid = ?"

    65         );

    66     }

    68     private Version mapColumns(ResultSet result) throws SQLException {

    69         final var project = new Project(result.getInt("project"));

    70         final var version = new Version(result.getInt("versionid"), project);

    71         version.setName(result.getString("name"));

    72         version.setOrdinal(result.getInt("ordinal"));

    73         version.setStatus(VersionStatus.valueOf(result.getString("status")));

    74         return version;

    75     }

    77     @Override

    78     public void save(Version instance) throws SQLException {

    79         Objects.requireNonNull(instance.getName());

    80         Objects.requireNonNull(instance.getProject());

    81         insert.setInt(1, instance.getProject().getId());

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

    83         insert.setInt(3, instance.getOrdinal());

    84         insert.setString(4, instance.getStatus().name());

    85         insert.executeUpdate();

    86     }

    88     @Override

    89     public boolean update(Version instance) throws SQLException {

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

    91         Objects.requireNonNull(instance.getName());

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

    93         update.setInt(2, instance.getOrdinal());

    94         update.setString(3, instance.getStatus().name());

    95         update.setInt(4, instance.getId());

    96         return update.executeUpdate() > 0;

    97     }

    99     @Override

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

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

   102         List<Version> versions = new ArrayList<>();

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

   104             while (result.next()) {

   105                 final var v = mapColumns(result);

   106                 v.setProject(project);

   107                 versions.add(v);

   108             }

   109         }

   110         return versions;

   111     }

   113     @Override

   114     public Version find(int id) throws SQLException {

   115         find.setInt(1, id);

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

   117             if (result.next()) {

   118                 return mapColumns(result);

   119             } else {

   120                 return null;

   121             }

   122         }

   123     }

   124 }

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