diff -r 4f912cd42876 -r 86b5d8a1662f src/main/java/de/uapcore/lightpit/dao/postgres/PGVersionDao.java
--- a/src/main/java/de/uapcore/lightpit/dao/postgres/PGVersionDao.java	Fri Nov 06 10:50:32 2020 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,114 +0,0 @@
-/*
- * 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.Functions;
-import de.uapcore.lightpit.dao.VersionDao;
-import de.uapcore.lightpit.entities.Project;
-import de.uapcore.lightpit.entities.Version;
-import de.uapcore.lightpit.entities.VersionStatus;
-
-import java.sql.Connection;
-import java.sql.PreparedStatement;
-import java.sql.ResultSet;
-import java.sql.SQLException;
-import java.util.List;
-
-public final class PGVersionDao implements VersionDao {
-
-    private final PreparedStatement insert, update, list, find, findByNode;
-
-    public PGVersionDao(Connection connection) throws SQLException {
-        final var query = "select versionid, project, name, node, ordinal, status from lpit_version";
-
-        list = connection.prepareStatement(query + " where project = ? " +
-                        "order by ordinal desc, lower(name) desc");
-        find = connection.prepareStatement(query + " where versionid = ?");
-        findByNode = connection.prepareStatement(query + " where project = ? and node = ?");
-
-        insert = connection.prepareStatement(
-                "insert into lpit_version (name, node, ordinal, status, project) values (?, ?, ?, ?::version_status, ?)"
-        );
-        update = connection.prepareStatement(
-                "update lpit_version set name = ?, node = ?, ordinal = ?, status = ?::version_status where versionid = ?"
-        );
-    }
-
-    private static Version mapColumns(ResultSet result) throws SQLException {
-        final var version = new Version(result.getInt("versionid"));
-        version.setName(result.getString("name"));
-        version.setNode(result.getString("node"));
-        version.setOrdinal(result.getInt("ordinal"));
-        version.setStatus(VersionStatus.valueOf(result.getString("status")));
-        return version;
-    }
-
-    private static int setFields(PreparedStatement stmt, Version instance) throws SQLException {
-        int column = 0;
-        stmt.setString(++column, instance.getName());
-        stmt.setString(++column, instance.getNode());
-        stmt.setInt(++column, instance.getOrdinal());
-        stmt.setString(++column, instance.getStatus().name());
-        return column;
-    }
-
-    @Override
-    public void save(Version instance, Project project) throws SQLException {
-        int column = setFields(insert, instance);
-        insert.setInt(++column, project.getId());
-        insert.executeUpdate();
-    }
-
-    @Override
-    public boolean update(Version instance) throws SQLException {
-        if (instance.getId() < 0) return false;
-        int column = setFields(update, instance);
-        update.setInt(++column, instance.getId());
-        return update.executeUpdate() > 0;
-    }
-
-    @Override
-    public List<Version> list(Project project) throws SQLException {
-        list.setInt(1, project.getId());
-        return Functions.list(list, PGVersionDao::mapColumns);
-    }
-
-    @Override
-    public Version find(int id) throws SQLException {
-        find.setInt(1, id);
-        return Functions.find(find, PGVersionDao::mapColumns);
-    }
-
-    @Override
-    public Version findByNode(Project project, String node) throws SQLException {
-        findByNode.setInt(1, project.getId());
-        findByNode.setString(2, node);;
-        return Functions.find(findByNode, PGVersionDao::mapColumns);
-    }
-}