universe@21: /*
universe@21: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
universe@21: *
universe@24: * Copyright 2018 Mike Becker. All rights reserved.
universe@21: *
universe@21: * Redistribution and use in source and binary forms, with or without
universe@21: * modification, are permitted provided that the following conditions are met:
universe@21: *
universe@21: * 1. Redistributions of source code must retain the above copyright
universe@21: * notice, this list of conditions and the following disclaimer.
universe@21: *
universe@21: * 2. Redistributions in binary form must reproduce the above copyright
universe@21: * notice, this list of conditions and the following disclaimer in the
universe@21: * documentation and/or other materials provided with the distribution.
universe@21: *
universe@21: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
universe@21: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
universe@21: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
universe@21: * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
universe@21: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
universe@21: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
universe@21: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
universe@21: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
universe@21: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
universe@21: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
universe@21: * POSSIBILITY OF SUCH DAMAGE.
universe@21: *
universe@21: */
universe@30: package de.uapcore.lightpit.dao;
universe@21:
universe@21: import de.uapcore.lightpit.LightPITModule;
universe@30: import de.uapcore.lightpit.entities.Module;
universe@30:
universe@30: import java.sql.*;
universe@21: import java.util.ArrayList;
universe@21: import java.util.List;
universe@21: import java.util.Map;
universe@21: import java.util.Set;
universe@21:
universe@30: public class ModuleDao {
universe@30:
universe@21: /**
universe@26: * Maps database columns to POJO fields.
universe@30: *
universe@26: * @param result the database result set
universe@30: * @param mod the POJO
universe@30: * @throws SQLException
universe@26: */
universe@26: protected void mapColumns(ResultSet result, Module mod) throws SQLException {
universe@26: mod.setModID(result.getInt("modid"));
universe@26: mod.setClassname(result.getString("classname"));
universe@26: mod.setVisible(result.getBoolean("visible"));
universe@26: }
universe@26:
universe@26:
universe@26: /**
universe@21: * Must return a prepared statement for a single object query with the specified properties.
universe@21: *
universe@21: *
universe@21: * - Parameter 1: classname
universe@21: * - Result field 1: visible
universe@21: *
universe@21: *
universe@21: * @param conn the connection to use
universe@21: * @return the prepared statement
universe@21: * @throws SQLException
universe@21: */
universe@21: protected PreparedStatement moduleCheckStatement(Connection conn) throws SQLException {
universe@21: return conn.prepareStatement("SELECT visible FROM lpitcore_module WHERE classname = ?");
universe@21: }
universe@21:
universe@21: /**
universe@21: * Must return a prepared statement for insertion with the specified properties.
universe@21: *
universe@21: *
universe@21: * - Parameter 1: classname
universe@21: * - Parameter 2: visible
universe@21: *
universe@21: *
universe@21: * @param conn the connection to use
universe@21: * @return the prepared statement
universe@21: * @throws SQLException
universe@21: */
universe@21: protected PreparedStatement moduleInsertStatement(Connection conn) throws SQLException {
universe@21: return conn.prepareStatement("INSERT INTO lpitcore_module (classname, visible) VALUES (?, ?)");
universe@21: }
universe@21:
universe@21: /**
universe@27: * Synchronizes a set of registered module classes with the database.
universe@21: *
universe@21: * Inserts module classes which are not known to the database and sets them to be visible by default.
universe@21: * Module classes known to the database, which are not in the given set, are ignored.
universe@21: *
universe@21: * @param conn the connection to use
universe@21: * @param moduleSet the module set to synchronize
universe@21: * @throws SQLException
universe@21: */
universe@27: public final void syncRegisteredModuleClasses(Connection conn, Set> moduleSet) throws SQLException {
universe@21:
universe@21: PreparedStatement
universe@21: check = moduleCheckStatement(conn),
universe@21: insert = moduleInsertStatement(conn);
universe@21: insert.setBoolean(2, true);
universe@21: // update/delete not required, we do this in the module management UI
universe@21:
universe@27: for (Map.Entry modEntry : moduleSet) {
universe@27: if (modEntry.getValue().systemModule()) continue;
universe@21:
universe@27: check.setString(1, modEntry.getKey());
universe@21: try (ResultSet r = check.executeQuery()) {
universe@27: if (!r.next()) {
universe@27: insert.setString(1, modEntry.getKey());
universe@21: insert.executeUpdate();
universe@21: }
universe@21: }
universe@21: }
universe@21: }
universe@21:
universe@21: /**
universe@21: * Returns a list of all modules known by the database.
universe@21: *
universe@21: * Keep in mind, that system modules are never known to the database.
universe@21: *
universe@21: * @param conn the connection to use
universe@21: * @return a list of all modules known by the database
universe@21: * @throws SQLException
universe@21: */
universe@21: public List listAll(Connection conn) throws SQLException {
universe@21: List list = new ArrayList<>();
universe@27: try (Statement stmt = conn.createStatement();
universe@21: ResultSet result = stmt.executeQuery("SELECT * FROM lpitcore_module")) {
universe@21: while (result.next()) {
universe@21: final Module mod = new Module();
universe@26: mapColumns(result, mod);
universe@21: list.add(mod);
universe@21: }
universe@21: }
universe@21: return list;
universe@21: }
universe@21: }