cleaned project structure

src/java/com/wasteinformationserver/db/Database.java

@@ -0,0 +1,90 @@
+package com.wasteinformationserver.db;
+
+import com.wasteinformationserver.basicutils.Log;
+
+import javax.swing.table.DefaultTableModel;
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.ResultSetMetaData;
+import java.sql.SQLException;
+import java.util.Vector;
+
+public abstract class
+Database {
+
+    protected String user;
+    protected String password;
+
+    protected String host;
+    protected int port;
+
+    protected String dbName;
+
+    public Database(String user, String password, String host, int port, String dbName) {
+        this.user = user;
+        this.password = password;
+        this.host = host;
+        this.port = port;
+        this.dbName = dbName;
+    }
+
+    public abstract Connection getConnection() throws SQLException;
+
+    public static void logToConsole(ResultSet res) {
+        try {
+
+            ResultSetMetaData rsmd = res.getMetaData();
+
+            while (res.next()) {
+                String row = "";
+
+                for (int i = 1; i <= rsmd.getColumnCount(); ++i) {
+                    if (row.length() > 0) {
+                        row += ", ";
+                    }
+
+                    if (res.getObject(i) != null) {
+                        row +=
+                                rsmd.getColumnName(i) +
+                                        ": " +
+                                        res.getObject(i).toString();
+                    }
+                }
+
+                Log.debug(row);
+            }
+
+        } catch (SQLException e) {
+        }
+    }
+
+    public static DefaultTableModel logToTable(ResultSet res) {
+        try {
+            ResultSetMetaData rsmd = res.getMetaData();
+            Vector<String> columnNames = new Vector<>();
+            int columnCount = rsmd.getColumnCount();
+
+            for (int i = 1; i <= columnCount; ++i) {
+                columnNames.add(rsmd.getColumnName(i));
+            }
+
+            Vector<Vector<Object>> data = new Vector<>();
+
+            while (res.next()) {
+                Vector<Object> row = new Vector();
+
+                for (int i = 1; i <= columnCount; ++i) {
+                    row.add(res.getObject(i));
+                }
+
+                data.add(row);
+            }
+
+            return new DefaultTableModel(data, columnNames);
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+
+        return null;
+    }
+}

src/java/com/wasteinformationserver/db/JDCB.java

@@ -0,0 +1,81 @@
+package com.wasteinformationserver.db;
+
+import com.wasteinformationserver.basicutils.Log;
+
+import java.io.IOException;
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+
+public class JDCB {
+    static Connection conn;
+
+    static JDCB jdcb;
+    static boolean loggedin = false;
+
+    static String usernamec;
+    static String passwordc;
+    static String dbnamec;
+    static String ipc;
+    static int portc;
+
+    public static void init(String username, String password, String dbname, String ip, int port) throws IOException {
+        usernamec = username;
+        passwordc = password;
+        dbnamec = dbname;
+        jdcb = new JDCB(username,password,dbname,ip,port);
+    }
+
+    private JDCB(String username, String password, String dbname, String ip, int port) throws IOException {
+        logintodb(username,password,dbname,ip, port);
+    }
+
+    public static JDCB getInstance() throws IOException {
+        if (loggedin){
+            return jdcb;
+        }else {
+            logintodb(usernamec,passwordc,dbnamec,ipc,portc);
+            return jdcb;
+        }
+
+    }
+
+    public static void logintodb(String username, String password, String dbname, String ip, int port) throws IOException {
+        Database db = new MySQLConnector(
+                username,
+                password,
+                ip,
+                port,
+                dbname);
+
+        try {
+            conn = db.getConnection();
+            loggedin = true;
+        } catch (SQLException e) {
+            throw new IOException("No connection to database");
+        }
+
+    }
+
+    public ResultSet executeQuery(String sql) {
+        try {
+            PreparedStatement stmt = conn.prepareStatement(sql);
+            return stmt.executeQuery();
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    public int executeUpdate(String sql) {
+        try {
+            PreparedStatement stmt = conn.prepareStatement(sql);
+
+            return stmt.executeUpdate();
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+        return -1;
+    }
+}

src/java/com/wasteinformationserver/db/MySQLConnector.java

@@ -0,0 +1,29 @@
+package com.wasteinformationserver.db;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+
+public class MySQLConnector extends Database {
+
+    static {
+        try {
+            Class.forName("com.mysql.jdbc.Driver").newInstance();
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public MySQLConnector(String user, String password, String host, int port, String dbName) {
+        super(user, password, host, port, dbName);
+    }
+
+    public Connection getConnection() throws SQLException {
+        DriverManager.setLoginTimeout(1); // TODO: 30.11.19 set higher maybe
+        return DriverManager.getConnection(
+                "jdbc:mysql://" + host + ":" + port + "/" + dbName + "?useSSL=false",
+                user,
+                password);
+    }
+
+}

src/java/com/wasteinformationserver/db/PostgreSQLConnector.java

@@ -0,0 +1,37 @@
+package com.wasteinformationserver.db;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+
+public class PostgreSQLConnector extends Database {
+
+    static {
+        try {
+            Class.forName("org.postgresql.Driver").newInstance();
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public PostgreSQLConnector(String user, String password, String host, int port, String dbName) {
+        super(user, password, host, port, dbName);
+    }
+
+    @Override
+    public Connection getConnection() {
+        Connection con = null;
+
+        try {
+            con = DriverManager.getConnection(
+                    "jdbc:postgresql://" + host + ":" + port + "/" + dbName,
+                    user,
+                    password);
+
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+
+        return con;
+    }
+}