Legacy Code Publication

2025-02-12 23:13:31 +01:00
parent 78ea931701
commit 27da9ec308
179 changed files with 7113 additions and 0 deletions
@@ -0,0 +1,109 @@
+package pl.krzysiek.simplesocial;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Statement;
+
+public class Server {
+    String username = "";
+    String password = "";
+    String url = "jdbc:mysql://";
+    Connection conn;
+
+    public Connection connection(){
+        try {
+            Class.forName("com.mysql.jdbc.Driver");
+            conn = DriverManager.getConnection(url, username, password);
+        } catch (SQLException | ClassNotFoundException ex) {
+            ex.printStackTrace();
+        }
+        return conn;
+    }
+
+    public Statement stmt() {
+        Statement stmt = null;
+        try{ stmt = connection().createStatement(); } catch (SQLException ex) { ex.printStackTrace(); }
+        return stmt;
+    }
+
+    public ResultSet query(String columns, String from, String type, String table, String joinOn, String where, String args) {
+        ResultSet res = null;
+        try {
+            res = stmt().executeQuery("SELECT " + columns + " FROM " + from + " " + type + " JOIN " + table + " ON " + joinOn + " WHERE " + where + " " + args + ";");
+        } catch (SQLException ex){
+            ex.printStackTrace();
+        }
+        close();
+        return res;
+    }
+
+    public ResultSet query(String columns, String from, String type, String table, String joinOn, String where) {
+        ResultSet res = null;
+        try {
+            res = stmt().executeQuery("SELECT " + columns + " FROM " + from + " " + type + " JOIN " + table + " ON " + joinOn + " WHERE " + where + ";");
+        } catch (SQLException ex){
+            ex.printStackTrace();
+        }
+        close();
+        return res;
+    }
+
+    public ResultSet query(String columns, String from, String where, String args) {
+        ResultSet res = null;
+        try {
+            res = stmt().executeQuery("SELECT " + columns + " FROM " + from + " WHERE " + where + " " + args + ";");
+        } catch (SQLException ex){
+            ex.printStackTrace();
+        }
+        close();
+        return res;
+    }
+
+    public ResultSet query(String columns, String from, String where) {
+        ResultSet res = null;
+        try {
+            res = stmt().executeQuery("SELECT " + columns + " FROM " + from + " WHERE " + where + ";");
+        } catch (SQLException ex){
+            ex.printStackTrace();
+        }
+        close();
+        return res;
+    }
+
+    public ResultSet query(String columns, String from) {
+        ResultSet res = null;
+        try {
+            res = stmt().executeQuery("SELECT " + columns + " FROM " + from + ";");
+        } catch (SQLException ex){
+            ex.printStackTrace();
+        }
+        close();
+        return res;
+    }
+
+    public void update(String table, String changes, String where) {
+        try {stmt().executeUpdate("UPDATE " + table + " SET " + changes + " WHERE " + where + ";"); } catch (SQLException ex) { ex.printStackTrace(); }
+        close();
+    }
+
+    public void delete(String from, String where){
+        try { stmt().executeUpdate("DELETE FROM " + from + " WHERE " + where + ";"); } catch (SQLException ex) { ex.printStackTrace(); }
+        close();
+    }
+
+    public void insert(String table, String columns, String values){
+        try {stmt().executeUpdate("INSERT INTO " + table + "(" + columns + ") VALUES(" + values + ");"); } catch (SQLException ex) { ex.printStackTrace(); }
+        close();
+    }
+
+    public void insert(String table, String values){
+        try {stmt().executeUpdate("INSERT INTO " + table + " VALUES(" + values + ");"); } catch (SQLException ex) { ex.printStackTrace(); }
+        close();
+    }
+
+    public void close(){
+        try{ connection().close(); } catch (SQLException ex) { ex.printStackTrace(); }
+    }
+}