Mercurial > hg > LightPIT / file revision

 /*

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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"

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 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.List;

 public final class PGComponentDao implements ComponentDao {

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

     public PGComponentDao(Connection connection) throws SQLException {

         final var query = "select id, name, node, color, ordinal, description, " +

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

                 "from lpit_component " +

                 "left join lpit_user on lead = userid";

         list = connection.prepareStatement(query + " where project = ? order by ordinal, lower(name)");

         find = connection.prepareStatement(query + " where id = ? ");

         findByNode = connection.prepareStatement(query + " where project = ? and node = ?");

         insert = connection.prepareStatement(

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

         );

         update = connection.prepareStatement(

                 "update lpit_component set name = ?, node = ?, 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"));

         component.setNode(result.getString("node"));

         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;

     }

     private static int setColumns(PreparedStatement stmt, Component instance) throws SQLException {

         int column = 0;

         stmt.setString(++column, instance.getName());

         stmt.setString(++column, instance.getNode());

         stmt.setString(++column, instance.getColor().getHex());

         stmt.setInt(++column, instance.getOrdinal());

         Functions.setStringOrNull(stmt, ++column, instance.getDescription());

         Functions.setForeignKeyOrNull(stmt, ++column, instance.getLead(), User::getId);

         return column;

     }

     @Override

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

         int column = setColumns(insert, instance);

         insert.setInt(++column, project.getId());

         insert.executeUpdate();

     }

     @Override

     public boolean update(Component instance) throws SQLException {

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

         int column = setColumns(update, instance);

         update.setInt(++column, instance.getId());

         return update.executeUpdate() > 0;

     }

     @Override

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

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

         return Functions.list(list, PGComponentDao::mapColumns);

     }

     @Override

     public Component find(int id) throws SQLException {

         find.setInt(1, id);

         return Functions.find(find, PGComponentDao::mapColumns);

     }

     @Override

     public Component findByNode(Project project, String node) throws SQLException {

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

         findByNode.setString(2, node);;

         return Functions.find(findByNode, PGComponentDao::mapColumns);

     }

 }