db #1
306
src/main/java/com/bib/essensbestellungsverwaltung/Database.java
Normal file
306
src/main/java/com/bib/essensbestellungsverwaltung/Database.java
Normal file
@ -0,0 +1,306 @@
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package com.bib.essensbestellungsverwaltung;
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/**
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* @author Malte Schulze Hobeling
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*/
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import java.io.File;
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import java.io.IOException;
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import java.nio.file.Path;
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import java.sql.*;
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import java.util.ArrayList;
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import java.util.List;
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public class Database {
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private static final String dbLocation = "jdbc:sqlite:"+Path.of("").toAbsolutePath()+"/database.db";
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protected static void init(){
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File db = new File(Path.of("").toAbsolutePath()+"/database.db");
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try {
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db.createNewFile();
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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}
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protected static Connection connect(){
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Connection conn = null;
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try{
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conn = DriverManager.getConnection(dbLocation);
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}catch (SQLException e){
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e.printStackTrace();
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}
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return conn;
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}
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protected static void createDb(){
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String[] sql = new String[14];
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sql[0] = """
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CREATE TABLE IF NOT EXISTS address (
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id integer PRIMARY KEY,
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street text,
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number text,
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plz text,
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city text
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);""";
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sql[1] = """
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CREATE TABLE IF NOT EXISTS food_type (
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id integer PRIMARY KEY,
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name text
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);""";
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sql[2] = """
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CREATE TABLE IF NOT EXISTS allergy (
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id integer PRIMARY KEY,
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name text
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);""";
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sql[3] = """
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CREATE TABLE IF NOT EXISTS severity (
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id integer PRIMARY KEY,
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severity integer
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);""";
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sql[4] = """
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CREATE TABLE IF NOT EXISTS user (
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id integer PRIMARY KEY,
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name text,
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firstname text,
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addressid integer,
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password text,
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email text UNIQUE,
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FOREIGN KEY(addressid) REFERENCES address(id)
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);""";
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sql[5] = """
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CREATE TABLE IF NOT EXISTS child (
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id integer PRIMARY KEY,
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name text,
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firstname text,
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addressid integer,
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FOREIGN KEY(addressid) REFERENCES address(id)
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);""";
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sql[6] = """
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CREATE TABLE IF NOT EXISTS worker (
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userid integer PRIMARY KEY,
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FOREIGN KEY(userid) REFERENCES user(id)
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);""";
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sql[7] = """
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CREATE TABLE IF NOT EXISTS parent (
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userid integer PRIMARY KEY,
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FOREIGN KEY(userid) REFERENCES user(id)
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);""";
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sql[8] = """
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CREATE TABLE IF NOT EXISTS parent_child (
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id integer PRIMARY KEY,
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parentuserid integer,
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childid integer,
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FOREIGN KEY(parentuserid) REFERENCES parent(userid),
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FOREIGN KEY(childid) REFERENCES child(id)
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);""";
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sql[9] = """
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CREATE TABLE IF NOT EXISTS child_allergy (
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id integer PRIMARY KEY,
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childid integer,
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allergyid integer,
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severityid integer,
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FOREIGN KEY(childid) REFERENCES child(id),
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FOREIGN KEY(allergyid) REFERENCES allergy(id),
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FOREIGN KEY(severityid) REFERENCES severity(id)
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);""";
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sql[10] = """
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CREATE TABLE IF NOT EXISTS food (
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id integer PRIMARY KEY,
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name text,
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description text,
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isdessert integer,
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food_typeid integer,
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FOREIGN KEY(food_typeid) REFERENCES food_type(id)
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);""";
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sql[11] = """
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CREATE TABLE IF NOT EXISTS food_plan (
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id integer PRIMARY KEY,
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date text,
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food1 integer,
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food2 integer,
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dessert1 integer,
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dessert2 integer,
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FOREIGN KEY(food1) REFERENCES food(id),
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FOREIGN KEY(food2) REFERENCES food(id),
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FOREIGN KEY(dessert1) REFERENCES food(id),
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FOREIGN KEY(dessert2) REFERENCES food(id)
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);""";
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sql[12] = """
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CREATE TABLE IF NOT EXISTS food_restrictions (
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id integer PRIMARY KEY,
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foodid integer,
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allergyid integer,
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FOREIGN KEY(foodid) REFERENCES food(id),
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FOREIGN KEY(allergyid) REFERENCES allergy(id)
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);""";
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sql[13] = """
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CREATE TABLE IF NOT EXISTS food_selection (
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id integer PRIMARY KEY,
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childid integer,
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food_planid integer,
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selection integer,
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FOREIGN KEY(childid) REFERENCES child(id),
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FOREIGN KEY(food_planid) REFERENCES food_plan(id)
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);""";
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try(Connection conn = connect(); Statement stmt = conn.createStatement()){
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for(int i = 0; i < sql.length; i++){
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stmt.execute(sql[i]);
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}
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} catch (SQLException e) {
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e.printStackTrace();
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}
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}
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protected static void fillSampleDb(){
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List<String> sqls = new ArrayList<>();
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sqls.add("""
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INSERT OR IGNORE INTO food_type (id,name)
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VALUES ('1','Vegan');""");
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sqls.add("""
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INSERT OR IGNORE INTO food_type (id,name)
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VALUES ('2','Vegetarisch');""");
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sqls.add("""
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INSERT OR IGNORE INTO food_type (id,name)
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VALUES ('3','Fleischhaltig');""");
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sqls.add("""
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INSERT OR IGNORE INTO allergy (id,name)
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VALUES('1','Eier');""");
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sqls.add("""
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INSERT OR IGNORE INTO allergy (id,name)
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VALUES('2','Soja');""");
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sqls.add("""
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INSERT OR IGNORE INTO allergy (id,name)
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VALUES('3','Milch');""");
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sqls.add("""
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INSERT OR IGNORE INTO allergy (id,name)
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VALUES('4','Erdnüsse');""");
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sqls.add("""
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INSERT OR IGNORE INTO allergy (id,name)
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VALUES('5','Weichtiere');""");
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sqls.add("""
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INSERT OR IGNORE INTO allergy (id,name)
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VALUES('6','Krebstiere');""");
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sqls.add("""
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INSERT OR IGNORE INTO allergy (id,name)
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VALUES('7','Getreide');""");
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sqls.add("""
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INSERT OR IGNORE INTO allergy (id,name)
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VALUES('8','Senf');""");
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sqls.add("""
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INSERT OR IGNORE INTO allergy (id,name)
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VALUES('9','Sesam');""");
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sqls.add("""
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INSERT OR IGNORE INTO allergy (id,name)
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VALUES('10','Schwefeldioxid und Sulfit');""");
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sqls.add("""
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INSERT OR IGNORE INTO allergy (id,name)
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VALUES('11','Nüsse');""");
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sqls.add("""
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INSERT OR IGNORE INTO allergy (id,name)
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VALUES('12','Sellerie');""");
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sqls.add("""
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INSERT OR IGNORE INTO allergy (id,name)
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VALUES('13','Fische');""");
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sqls.add("""
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INSERT OR IGNORE INTO allergy (id,name)
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VALUES('14','Lupinen');""");
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sqls.add("""
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INSERT OR IGNORE INTO allergy (id,name)
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VALUES('15','Nitrit-Pökelsalz');""");
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sqls.add("""
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INSERT OR IGNORE INTO allergy (id,name)
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VALUES('16','Phosphat');""");
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sqls.add("""
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INSERT OR IGNORE INTO allergy (id,name)
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VALUES('17','Nitrat');""");
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sqls.add("""
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INSERT OR IGNORE INTO allergy (id,name)
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VALUES('18','Antioxidationsmittel');""");
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sqls.add("""
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INSERT OR IGNORE INTO allergy (id,name)
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VALUES('19','Farbstoff');""");
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sqls.add("""
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INSERT OR IGNORE INTO allergy (id,name)
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VALUES('20','Geschmacksverstärker');""");
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sqls.add("""
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INSERT OR IGNORE INTO allergy (id,name)
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VALUES('21','Süßungsmittel');""");
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sqls.add("""
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INSERT OR IGNORE INTO allergy (id,name)
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VALUES('22','Konservierungsstoff');""");
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try(Connection conn = connect(); Statement stmt = conn.createStatement()){
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for (String sql : sqls) {
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stmt.execute(sql);
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}
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}catch (SQLException e){
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e.printStackTrace();
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}
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}
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protected static boolean insert(String table, String header, String values){
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try (Connection conn = connect(); Statement stmt = conn.createStatement()){
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String sql = "INSERT OR IGNORE INTO " + table + " (" + header + ") VALUES(" + values + ");";
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stmt.execute(sql);
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} catch (SQLException e) {
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return false;
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}
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return true;
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}
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protected static void printSampleQuery(){
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String sql = """
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SELECT * FROM food_type WHERE id > ?;""";
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String sql1 = """
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SELECT * FROM allergy WHERE id > ?;""";
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try(Connection conn = connect()){
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PreparedStatement pstmt = conn.prepareStatement(sql);
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PreparedStatement pstmt1 = conn.prepareStatement(sql1);
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pstmt.setInt(1,0);
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ResultSet rs = pstmt.executeQuery();
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System.out.println("food_type");
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while (rs.next()){
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System.out.println("ID: " + rs.getInt("id") + ", Name: " + rs.getString("name"));
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}
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System.out.println("allergy");
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pstmt1.setInt(1,0);
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rs = pstmt1.executeQuery();
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while (rs.next()){
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System.out.println("ID: " + rs.getInt("id") + ", Name: " + rs.getString("name"));
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}
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}catch (SQLException e){
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e.printStackTrace();
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}
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}
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protected static void deleteSample(){
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String sql = """
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DELETE FROM user WHERE id = ?;""";
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try(Connection conn = connect();PreparedStatement pstmt = conn.prepareStatement(sql)){
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pstmt.setInt(1,1);
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pstmt.executeUpdate();
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}catch (SQLException e){
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e.printStackTrace();
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}
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}
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/* String sql = """
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CREATE TABLE IF NOT EXISTS user (
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id integer PRIMARY KEY,
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name text);""";
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String sql2 = "SELECT * FROM user WHERE id > ?";
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String sql3 = "INSERT INTO user (id,name) VALUES (1,'test1')";
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try(Connection conn = connect();
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Statement stmt = conn.createStatement()){
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stmt.execute(sql);
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stmt.execute(sql3);
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PreparedStatement pstmt = conn.prepareStatement(sql2);
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pstmt.setInt(1,0);
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ResultSet rs = pstmt.executeQuery();
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while (rs.next()){
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System.out.println(rs.getInt("id"));
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}
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}catch (SQLException e){
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e.printStackTrace();
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return;
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} */
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}
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@ -6,10 +6,8 @@ import javafx.scene.Scene;
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import javafx.stage.Stage;
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import java.io.IOException;
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import java.sql.*;
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public class HelloApplication extends Application {
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private static final String dbLocation = "jdbc:sqlite:"+HelloApplication.class.getResource("database/database.db");
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@Override
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public void start(Stage stage) throws IOException {
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FXMLLoader fxmlLoader = new FXMLLoader(HelloApplication.class.getResource("hello-view.fxml"));
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@ -20,36 +18,11 @@ public class HelloApplication extends Application {
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}
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public static void main(String[] args) {
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/* String sql = """
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CREATE TABLE IF NOT EXISTS user (
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id integer PRIMARY KEY,
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name text);""";
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String sql2 = "SELECT * FROM user WHERE id > ?";
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String sql3 = "INSERT INTO user (id,name) VALUES (1,'test1')";
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try(Connection conn = connect();
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Statement stmt = conn.createStatement()){
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stmt.execute(sql);
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stmt.execute(sql3);
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PreparedStatement pstmt = conn.prepareStatement(sql2);
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pstmt.setInt(1,0);
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ResultSet rs = pstmt.executeQuery();
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while (rs.next()){
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System.out.println(rs.getInt("id"));
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}
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}catch (SQLException e){
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e.printStackTrace();
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return;
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} */
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Database.init();
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Database.createDb();
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Database.fillSampleDb();
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Database.printSampleQuery();
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//Database.deleteSample();
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launch();
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}
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private static Connection connect(){
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Connection conn = null;
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try{
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conn = DriverManager.getConnection(dbLocation);
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}catch (SQLException e){
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e.printStackTrace();
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}
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return conn;
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}
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}
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Loading…
Reference in New Issue
Block a user