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von der Wiege bis zur Bahre, Kommentare, Kommentare #3

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PBS2H21ASH merged 1 commits from MaltesConsolenEcke into main 2023-01-16 16:38:08 +01:00
Conversation 0 Commits 1 Files Changed 3 +151 -10
3 changed files with 151 additions and 10 deletions
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61
src/main/java/com/bib/essensbestellungsverwaltung/AccountMgr.java
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@@ -14,13 +14,14 @@ import java.util.List;
public class AccountMgr {
protected static double price = 5.0;
/**
* creates a user with createUser(...) and adds its id to the 'worker' table
* @param userData String[] name, firstname, password, email
* @param addressData String[] street, number, plz, city
* @return userid or -1
*/
public static long createWorker(String[] userData, String[] addressData){
protected static long createWorker(String[] userData, String[] addressData){
long id = createUser(userData, addressData);
String sId = String.valueOf(id);
Database.insert("worker", new String[]{"userid"}, new String[]{sId});
@@ -33,7 +34,7 @@ public class AccountMgr {
* @param addressData String[] street, number, plz, city
* @return userid or -1
*/
public static long createParent(String[] userData, String[] addressData){
protected static long createParent(String[] userData, String[] addressData){
long id = createUser(userData, addressData);
String sId = String.valueOf(id);
Database.insert("parent", new String[]{"userid"}, new String[]{sId});
@@ -46,7 +47,7 @@ public class AccountMgr {
* @param addressData String[] street, number, plz, city
* @return userid or -1
*/
private static long createUser(String[] userData, String[] addressData) {
protected static long createUser(String[] userData, String[] addressData) {
String[] addressH = {"street", "number", "plz", "city"};
String[] userH = {"name", "firstname", "addressid", "password", "email"};
String name = userData[0];
@@ -61,7 +62,14 @@ public class AccountMgr {
return id;
}
public static long createChild(String[] childData,String[] allergyData, String[] severityData){
/**
* adds a child and allergies to the database
* @param childData name, firstname, addressid
* @param allergyData id of allergies order matching with severityData
* @param severityData id of severity order matching with allergyData
* @return id of child or -1
*/
protected static long createChild(String[] childData,String[] allergyData, String[] severityData){
String[] childH = {"name","firstname","addressid"};
String[] child_allergyH = {"childid","allergyid","severityid"};
long id = Database.insert("child", childH, childData);
@@ -75,33 +83,60 @@ public class AccountMgr {
return id;
}
public static long matchParentChild(String parentId, String childId){
/**
* creates entries in the database to match parent to child
* @param parentId id of parent
* @param childId id of child
* @return id of parent_child or -1
*/
protected static long matchParentChild(String parentId, String childId){
String[] parent_childH = {"parentuserid","childid"};
String[] parent_childD = {parentId,childId};
return Database.insert("parent_child", parent_childH,parent_childD);
}
public static long login(String email, String pw){
/**
* a simple login to check if a given email matches a password
* @param email email
* @param pw password
* @return id or -1
*/
protected static long login(String email, String pw){
String[] userH = {"email","password"};
String[] userD = {email,hashAndSalt(pw)};
return Database.getSingleId("user",userH,userD);
}
public static boolean isWorker(String id){
/**
* checks if id is in worker table
* @param id userid
* @return true if id is in worker table
*/
protected static boolean isWorker(String id){
String[] workerH = {"userid"};
String[] workerD = {id};
long workerId = Database.getSingleId("worker",workerH,workerD);
return workerId > 0;
}
public static boolean isParent(String id){
/**
* checks if id is in parent table
* @param id userid
* @return true if id is in parent table
*/
protected static boolean isParent(String id){
String[] parentH = {"userid"};
String[] parentD = {id};
long parentId = Database.getSingleId("parent",parentH,parentD);
return parentId > 0;
}
public static String hashAndSalt(String pw){
/**
* returns a hashed and salted password
* @param pw the password to hash
* @return hashed and salted password
*/
protected static String hashAndSalt(String pw){
//todo: find a better way to salt
byte[] magicSalt = new byte[]{96, 13, 100, 85, -37, 52, -123, 86, -123, -92, 16, 15, -110, -42, -49, 0};
KeySpec spec = new PBEKeySpec(pw.toCharArray(), magicSalt,310001,256);
@@ -117,7 +152,13 @@ public class AccountMgr {
return hashedPw;
}
public static List<String> getInvoice(String date, String childId){
/**
* gives the invoice for one month and one child
* @param date YYYY-MM the month
* @param childId id of child
* @return the invoice as a List
*/
protected static List<String> getInvoice(String date, String childId){
List<String> invoice = new ArrayList<>();
invoice.add("Monatsabrechnung " + date);
List<String> child = Database.getEntryById("child", Long.parseLong(childId));

64
src/main/java/com/bib/essensbestellungsverwaltung/Database.java
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@@ -13,6 +13,11 @@ import java.util.List;
public class Database {
private static final String dbLocation = "jdbc:sqlite:"+Path.of("").toAbsolutePath()+"/database.db";
/**
* creates new database.db if it doesn't exist
* @return true if a new database has been created
*/
protected static boolean init(){
File db = new File(Path.of("").toAbsolutePath()+"/database.db");
try {
@@ -21,6 +26,11 @@ public class Database {
throw new RuntimeException(e);
}
}
/**
* connects to the database
* @return Connection to the database
*/
protected static Connection connect(){
Connection conn = null;
try{
@@ -31,6 +41,9 @@ public class Database {
return conn;
}
/**
* creates the initial structure of the db
*/
protected static void createDb(){
String[] sql = new String[14];
sql[0] = """
@@ -152,6 +165,9 @@ public class Database {
}
}
/**
* inserts fixed values into the database
*/
protected static void fillDb(){
List<String> sqls = new ArrayList<>();
sqls.add("""
@@ -249,6 +265,7 @@ public class Database {
/**
* inserts data into table and returns its id
* does not insert if the exact set already exists
* @param table name of the database table
* @param header String[] order should match with values
* @param values String[] order should match with header
@@ -288,6 +305,13 @@ public class Database {
return id;
}
/**
* returns a single id that matches the given data
* @param table the table that contains the searched entry
* @param header the header of the table, order should match with values
* @param values the data you want the id of, order should match witch values
* @return one id matching the given data or -1 if no match has been found
*/
protected static long getSingleId(String table, String[] header, String[] values){
long id = -1;
try(Connection conn = connect()){
@@ -307,6 +331,9 @@ public class Database {
return id;
}
/**
* @deprecated
*/
protected static void printSampleQuery(){
String sql = """
SELECT * FROM food_type WHERE id > ?;""";
@@ -332,6 +359,11 @@ public class Database {
}
}
/**
* deletes an entry from table with matching id
* @param table the table that contains the entry you want to delete
* @param id the id of the entry you want to delete
*/
protected static void delete(String table, long id){
String sql = "DELETE FROM " + table + " WHERE id = ?;";
try(Connection conn = connect();PreparedStatement ps = conn.prepareStatement(sql)){
@@ -434,6 +466,11 @@ public class Database {
return sql;
}
/**
* returns a list of all entries
* @param table the table you want
* @return a list of all entries as String with the fields separated by ":"
*/
protected static List<String> getTable(String table){
List<String> data = new ArrayList<>();
StringBuilder sb;
@@ -458,6 +495,13 @@ public class Database {
return data;
}
/**
* issues a select query on the database for the given table and the given values checked with LIKE
* @param table the table you want the data from
* @param header header for the WHERE portion, order should match with values
* @param values values for the WHERE portion, order should match with header
* @return a list of the matching data as String separated by ":"
*/
protected static List<String> select(String table,String[] header, String[] values){
List<String> data = new ArrayList<>();
StringBuilder sb;
@@ -483,6 +527,12 @@ public class Database {
return data;
}
/**
* returns the entry from table with the given id
* @param table the table you want the entry from
* @param id the id of the entry you want
* @return a list of String separated by ":"
*/
protected static List<String> getEntryById(String table, long id){
List<String> data = new ArrayList<>();
StringBuilder sb;
@@ -509,6 +559,13 @@ public class Database {
return data;
}
/**
* counts the number of matching entries
* @param table the table you want to count
* @param header the properties you want to count on
* @param values the values for the properties
* @return the number of found rows
*/
protected static int count(String table,String[] header,String[] values){
String sql = queryBuilder("count",table,header,values);
try(Connection conn = connect()) {
@@ -520,6 +577,13 @@ public class Database {
}
}
/**
* updates an entry in the database
* @param table the table you want to update
* @param header [0] is used as WHERE, everything else in SET
* @param values [0] is used as WHERE, everything else in SET
* @return number of rows affected or -1 on error
*/
protected static int update(String table,String[] header,String[] values){
try(Connection conn = connect()) {
String sql = queryBuilder("update",table,header,values);

36
src/main/java/com/bib/essensbestellungsverwaltung/FoodMgr.java
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@@ -7,6 +7,12 @@ import java.util.ArrayList;
import java.util.List;
public class FoodMgr {
/**
* inserts a food int to the database and creates the food_restriction entries
* @param foodData name, description, isdessert, food_typeid
* @param allergyData allergyids
* @return id of food or -1
*/
public static long createFood(String[] foodData, String[] allergyData){
String[] foodH = {"name","description","isDessert","food_typeid"};
String[] food_restrictionH = {"foodid","allergyid"};
@@ -21,23 +27,43 @@ public class FoodMgr {
return id;
}
/**
* inserts a food_plan into the database
* @param food_planData date[YYYY-MM-DD], foodid[vegan], foodid, foodid[dessert,vegan], foodid[dessert]
* @return id of food_plan or -1
*/
public static long createFood_plan(String[] food_planData){
String[] food_planH = {"date","food1","food2","dessert1","dessert2"};
return Database.insert("food_plan",food_planH,food_planData);
}
/**
* returns all non desserts or all desserts
* @param isDessert true for only desserts false for non desserts
* @return a list of all non desserts or all desserts
*/
public static List<String> getFood(boolean isDessert){
String[] foodH = {"isDessert"};
String[] foodD = {(isDessert ? "1" : "0")};
return Database.select("food",foodH,foodD);
}
/**
* getFood but returns only vegan food
* @param isDessert true for only desserts false for non desserts
* @return a list of all vegan non desserts or all vegan desserts
*/
public static List<String> getVeganFood(boolean isDessert){
String[] foodH = {"isDessert","food_typeid"};
String[] foodD = {(isDessert ? "1" : "0"),"1"};
return Database.select("food",foodH,foodD);
}
/**
* returns a food_plan for a day
* @param date YYYY-MM-DD one day
* @return food_plan for date
*/
public static List<String> getFood_plan(String date){
String[] food_planH = {"date"};
String[] food_planD = {date};
@@ -48,6 +74,11 @@ public class FoodMgr {
return Database.getEntryById("food",id);
}
/**
* inserts the selected food into food_Selection if the food_plan has not been sent
* @param food_selectionData childid, food_planid, foodid
* @return id or -1
*/
public static long createFood_selection(String[] food_selectionData){
String[] food_selectionH = {"childid","food_planid","foodid"};
List<String> food_plan = Database.getEntryById("food_plan",Long.parseLong(food_selectionData[1]));
@@ -59,6 +90,11 @@ public class FoodMgr {
}
}
/**
* accumulates the selected food for a given day and locks the corresponding food_plan
* @param date YYYY-MM-DD day
* @return the accumulated orders
*/
public static List<String> getDayOrder(String date){
List<String> orders = new ArrayList<>();
List<String> food_plan = getFood_plan(date);