src/main/java/com/bib/essensbestellungsverwaltung/Database.java

@@ -0,0 +1,306 @@
+package com.bib.essensbestellungsverwaltung;
+/**
+ * @author Malte Schulze Hobeling
+ */
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Path;
+import java.sql.*;
+import java.util.ArrayList;
+import java.util.List;
+
+
+public class Database {
+    private static final String dbLocation = "jdbc:sqlite:"+Path.of("").toAbsolutePath()+"/database.db";
+    protected static void init(){
+        File db = new File(Path.of("").toAbsolutePath()+"/database.db");
+        try {
+            db.createNewFile();
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+    protected static Connection connect(){
+        Connection conn = null;
+        try{
+            conn = DriverManager.getConnection(dbLocation);
+        }catch (SQLException e){
+            e.printStackTrace();
+        }
+        return conn;
+    }
+
+    protected static void createDb(){
+        String[] sql = new String[14];
+        sql[0] = """
+                CREATE TABLE IF NOT EXISTS address (
+                id integer PRIMARY KEY,
+                street text,
+                number text,
+                plz text,
+                city text
+                );""";
+        sql[1] = """
+                CREATE TABLE IF NOT EXISTS food_type (
+                id integer PRIMARY KEY,
+                name text
+                );""";
+        sql[2] = """
+                CREATE TABLE IF NOT EXISTS allergy (
+                id integer PRIMARY KEY,
+                name text
+                );""";
+        sql[3] = """
+                CREATE TABLE IF NOT EXISTS severity (
+                id integer PRIMARY KEY,
+                severity integer
+                );""";
+        sql[4] = """
+                CREATE TABLE IF NOT EXISTS user (
+                id integer PRIMARY KEY,
+                name text,
+                firstname text,
+                addressid integer,
+                password text,
+                email text UNIQUE,
+                FOREIGN KEY(addressid) REFERENCES address(id)
+                );""";
+        sql[5] = """
+                CREATE TABLE IF NOT EXISTS child (
+                id integer PRIMARY KEY,
+                name text,
+                firstname text,
+                addressid integer,
+                FOREIGN KEY(addressid) REFERENCES address(id)
+                );""";
+        sql[6] = """
+                CREATE TABLE IF NOT EXISTS worker (
+                userid integer PRIMARY KEY,
+                FOREIGN KEY(userid) REFERENCES user(id)
+                );""";
+        sql[7] = """
+                CREATE TABLE IF NOT EXISTS parent (
+                userid integer PRIMARY KEY,
+                FOREIGN KEY(userid) REFERENCES user(id)
+                );""";
+        sql[8] = """
+                CREATE TABLE IF NOT EXISTS parent_child (
+                id integer PRIMARY KEY,
+                parentuserid integer,
+                childid integer,
+                FOREIGN KEY(parentuserid) REFERENCES parent(userid),
+                FOREIGN KEY(childid) REFERENCES child(id)
+                );""";
+        sql[9] = """
+                CREATE TABLE IF NOT EXISTS child_allergy (
+                id integer PRIMARY KEY,
+                childid integer,
+                allergyid integer,
+                severityid integer,
+                FOREIGN KEY(childid) REFERENCES child(id),
+                FOREIGN KEY(allergyid) REFERENCES allergy(id),
+                FOREIGN KEY(severityid) REFERENCES severity(id)
+                );""";
+        sql[10] = """
+                CREATE TABLE IF NOT EXISTS food (
+                id integer PRIMARY KEY,
+                name text,
+                description text,
+                isdessert integer,
+                food_typeid integer,
+                FOREIGN KEY(food_typeid) REFERENCES food_type(id)
+                );""";
+        sql[11] = """
+                CREATE TABLE IF NOT EXISTS food_plan (
+                id integer PRIMARY KEY,
+                date text,
+                food1 integer,
+                food2 integer,
+                dessert1 integer,
+                dessert2 integer,
+                FOREIGN KEY(food1) REFERENCES food(id),
+                FOREIGN KEY(food2) REFERENCES food(id),
+                FOREIGN KEY(dessert1) REFERENCES food(id),
+                FOREIGN KEY(dessert2) REFERENCES food(id)
+                );""";
+        sql[12] = """
+                CREATE TABLE IF NOT EXISTS food_restrictions (
+                id integer PRIMARY KEY,
+                foodid integer,
+                allergyid integer,
+                FOREIGN KEY(foodid) REFERENCES food(id),
+                FOREIGN KEY(allergyid) REFERENCES allergy(id)
+                );""";
+        sql[13] = """
+                CREATE TABLE IF NOT EXISTS food_selection (
+                id integer PRIMARY KEY,
+                childid integer,
+                food_planid integer,
+                selection integer,
+                FOREIGN KEY(childid) REFERENCES child(id),
+                FOREIGN KEY(food_planid) REFERENCES food_plan(id)
+                );""";
+        try(Connection conn = connect(); Statement stmt = conn.createStatement()){
+            for(int i = 0; i < sql.length; i++){
+                stmt.execute(sql[i]);
+            }
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+    }
+
+    protected static void fillSampleDb(){
+        List<String> sqls = new ArrayList<>();
+        sqls.add("""
+                INSERT OR IGNORE INTO food_type (id,name)
+                VALUES ('1','Vegan');""");
+        sqls.add("""
+                INSERT OR IGNORE INTO food_type (id,name)
+                VALUES ('2','Vegetarisch');""");
+        sqls.add("""
+                INSERT OR IGNORE INTO food_type (id,name)
+                VALUES ('3','Fleischhaltig');""");
+        sqls.add("""
+                INSERT OR IGNORE INTO allergy (id,name)
+                VALUES('1','Eier');""");
+        sqls.add("""
+                INSERT OR IGNORE INTO allergy (id,name)
+                VALUES('2','Soja');""");
+        sqls.add("""
+                INSERT OR IGNORE INTO allergy (id,name)
+                VALUES('3','Milch');""");
+        sqls.add("""
+                INSERT OR IGNORE INTO allergy (id,name)
+                VALUES('4','Erdnüsse');""");
+        sqls.add("""
+                INSERT OR IGNORE INTO allergy (id,name)
+                VALUES('5','Weichtiere');""");
+        sqls.add("""
+                INSERT OR IGNORE INTO allergy (id,name)
+                VALUES('6','Krebstiere');""");
+        sqls.add("""
+                INSERT OR IGNORE INTO allergy (id,name)
+                VALUES('7','Getreide');""");
+        sqls.add("""
+                INSERT OR IGNORE INTO allergy (id,name)
+                VALUES('8','Senf');""");
+        sqls.add("""
+                INSERT OR IGNORE INTO allergy (id,name)
+                VALUES('9','Sesam');""");
+        sqls.add("""
+                INSERT OR IGNORE INTO allergy (id,name)
+                VALUES('10','Schwefeldioxid und Sulfit');""");
+        sqls.add("""
+                INSERT OR IGNORE INTO allergy (id,name)
+                VALUES('11','Nüsse');""");
+        sqls.add("""
+                INSERT OR IGNORE INTO allergy (id,name)
+                VALUES('12','Sellerie');""");
+        sqls.add("""
+                INSERT OR IGNORE INTO allergy (id,name)
+                VALUES('13','Fische');""");
+        sqls.add("""
+                INSERT OR IGNORE INTO allergy (id,name)
+                VALUES('14','Lupinen');""");
+        sqls.add("""
+                INSERT OR IGNORE INTO allergy (id,name)
+                VALUES('15','Nitrit-Pökelsalz');""");
+        sqls.add("""
+                INSERT OR IGNORE INTO allergy (id,name)
+                VALUES('16','Phosphat');""");
+        sqls.add("""
+                INSERT OR IGNORE INTO allergy (id,name)
+                VALUES('17','Nitrat');""");
+        sqls.add("""
+                INSERT OR IGNORE INTO allergy (id,name)
+                VALUES('18','Antioxidationsmittel');""");
+        sqls.add("""
+                INSERT OR IGNORE INTO allergy (id,name)
+                VALUES('19','Farbstoff');""");
+        sqls.add("""
+                INSERT OR IGNORE INTO allergy (id,name)
+                VALUES('20','Geschmacksverstärker');""");
+        sqls.add("""
+                INSERT OR IGNORE INTO allergy (id,name)
+                VALUES('21','Süßungsmittel');""");
+        sqls.add("""
+                INSERT OR IGNORE INTO allergy (id,name)
+                VALUES('22','Konservierungsstoff');""");
+        try(Connection conn = connect(); Statement stmt = conn.createStatement()){
+            for (String sql : sqls) {
+                stmt.execute(sql);
+            }
+        }catch (SQLException e){
+            e.printStackTrace();
+        }
+    }
+
+    protected static boolean insert(String table, String header, String values){
+        try (Connection conn = connect(); Statement stmt = conn.createStatement()){
+            String sql = "INSERT OR IGNORE INTO " + table + " (" + header + ") VALUES(" + values + ");";
+            stmt.execute(sql);
+        } catch (SQLException e) {
+            return false;
+        }
+        return true;
+    }
+
+
+    protected static void printSampleQuery(){
+        String sql = """
+                SELECT * FROM food_type WHERE id > ?;""";
+        String sql1 = """
+                SELECT * FROM allergy WHERE id > ?;""";
+        try(Connection conn = connect()){
+            PreparedStatement pstmt = conn.prepareStatement(sql);
+            PreparedStatement pstmt1 = conn.prepareStatement(sql1);
+            pstmt.setInt(1,0);
+            ResultSet rs = pstmt.executeQuery();
+            System.out.println("food_type");
+            while (rs.next()){
+                System.out.println("ID: " + rs.getInt("id") + ", Name: " + rs.getString("name"));
+            }
+            System.out.println("allergy");
+            pstmt1.setInt(1,0);
+            rs = pstmt1.executeQuery();
+            while (rs.next()){
+                System.out.println("ID: " + rs.getInt("id") + ", Name: " + rs.getString("name"));
+            }
+        }catch (SQLException e){
+            e.printStackTrace();
+        }
+    }
+
+    protected static void deleteSample(){
+        String sql = """
+                DELETE FROM user WHERE id = ?;""";
+        try(Connection conn = connect();PreparedStatement pstmt = conn.prepareStatement(sql)){
+            pstmt.setInt(1,1);
+            pstmt.executeUpdate();
+        }catch (SQLException e){
+            e.printStackTrace();
+        }
+    }
+
+    /*        String sql = """
+                CREATE TABLE IF NOT EXISTS user (
+                id integer PRIMARY KEY,
+                name text);""";
+        String sql2 = "SELECT * FROM user WHERE id > ?";
+        String sql3 = "INSERT INTO user (id,name) VALUES (1,'test1')";
+        try(Connection conn = connect();
+            Statement stmt = conn.createStatement()){
+            stmt.execute(sql);
+            stmt.execute(sql3);
+            PreparedStatement pstmt = conn.prepareStatement(sql2);
+            pstmt.setInt(1,0);
+            ResultSet rs = pstmt.executeQuery();
+            while (rs.next()){
+                System.out.println(rs.getInt("id"));
+            }
+        }catch (SQLException e){
+            e.printStackTrace();
+            return;
+        }   */
+}

src/main/java/com/bib/essensbestellungsverwaltung/HelloApplication.java

@@ -6,10 +6,8 @@ import javafx.scene.Scene;
 import javafx.stage.Stage;
 
 import java.io.IOException;
-import java.sql.*;
 
 public class HelloApplication extends Application {
-    private static final String dbLocation = "jdbc:sqlite:"+HelloApplication.class.getResource("database/database.db");
     @Override
     public void start(Stage stage) throws IOException {
         FXMLLoader fxmlLoader = new FXMLLoader(HelloApplication.class.getResource("hello-view.fxml"));
@@ -20,36 +18,11 @@ public class HelloApplication extends Application {
     }
 
     public static void main(String[] args) {
-/*        String sql = """
-                CREATE TABLE IF NOT EXISTS user (
-                id integer PRIMARY KEY,
-                name text);""";
-        String sql2 = "SELECT * FROM user WHERE id > ?";
-        String sql3 = "INSERT INTO user (id,name) VALUES (1,'test1')";
-        try(Connection conn = connect();
-            Statement stmt = conn.createStatement()){
-            stmt.execute(sql);
-            stmt.execute(sql3);
-            PreparedStatement pstmt = conn.prepareStatement(sql2);
-            pstmt.setInt(1,0);
-            ResultSet rs = pstmt.executeQuery();
-            while (rs.next()){
-                System.out.println(rs.getInt("id"));
-            }
-        }catch (SQLException e){
-            e.printStackTrace();
-            return;
-        }   */
+        Database.init();
+        Database.createDb();
+        Database.fillSampleDb();
+        Database.printSampleQuery();
+        //Database.deleteSample();
         launch();
     }
-
-    private static Connection connect(){
-        Connection conn = null;
-        try{
-            conn = DriverManager.getConnection(dbLocation);
-        }catch (SQLException e){
-            e.printStackTrace();
-        }
-        return conn;
-    }
 }