src/main/java/de/uapcore/lightpit/dao/postgres/PGProjectDao.java

/*
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 * Copyright 2018 Mike Becker. All rights reserved.
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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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;
    }
}