Added MySQL and SQLite(IN-PROGRESS) features

src/main/java/io/github/simplexdev/simplexcore/sql/Database.java

@@ -0,0 +1,92 @@
+package io.github.simplexdev.simplexcore.sql;
+
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+
+public class Database {
+
+    /*
+    * More to be added soon.
+     */
+
+    public static void createTable(String table, String columns) {
+        PreparedStatement ps;
+        try {
+            ps = MySQL.getConnection().prepareStatement("CREATE TABLE IF NOT EXISTS "
+            + table + " (" + columns + ");");
+            ps.executeUpdate();
+        } catch(SQLException ex) {
+            // TODO
+        }
+    }
+
+    public static void insertData(String columns, String values, String table) {
+        PreparedStatement ps;
+        try {
+            ps = MySQL.getConnection().prepareStatement("INSERT INTO "
+            + table + "(" + columns + ") VALUES (" + values + ");");
+            ps.executeUpdate();
+        } catch(SQLException ex) {
+            // TODO
+        }
+    }
+
+    public static void deleteData(String table, String column, Object value) {
+        PreparedStatement ps;
+        try {
+            ps = MySQL.getConnection().prepareStatement("DELETE FROM " + table + " WHERE " + column + "=?");
+            ps.setObject(1, value);
+            ps.executeUpdate();
+        } catch(SQLException ex) {
+            // TODO
+        }
+    }
+
+    public static void set(String table, String gate, Object gate_value, String column, Object value) {
+        PreparedStatement ps;
+        try {
+            ps = MySQL.getConnection().prepareStatement("UPDATE " + table + " SET " + column + "=? WHERE " + gate + "=?");
+            ps.setObject(1, value);
+            ps.setObject(2, gate_value);
+            ps.executeUpdate();
+        } catch(SQLException ex) {
+            // TODO
+        }
+    }
+
+    public static boolean exists(String table, String column, Object value) {
+        PreparedStatement ps;
+        try {
+            ps = MySQL.getConnection().prepareStatement("SELECT * FROM "
+            + table + " WHERE " + column + "=?");
+            ps.setObject(1, value);
+
+            ResultSet results = ps.executeQuery();
+            return results.next();
+        } catch(SQLException ex) {
+            // TODO
+        }
+        return false;
+    }
+
+    public static Object get(String table, String column, String gate, Object gate_value) {
+        PreparedStatement ps;
+        try {
+            ps = MySQL.getConnection().prepareStatement("SELECT " + column + " FROM " + table
+             + " WHERE " + gate + "=?");
+            ps.setObject(1, gate_value);
+
+            ResultSet rs = ps.executeQuery();
+            Object toReturn;
+
+            if (rs.next()) {
+                toReturn = rs.getObject("CODE");
+                return toReturn;
+            }
+        } catch(SQLException ex) {
+            // TODO
+        }
+        return null;
+    }
+}

src/main/java/io/github/simplexdev/simplexcore/sql/MySQL.java

@@ -0,0 +1,55 @@
+package io.github.simplexdev.simplexcore.sql;
+
+import javax.annotation.Nullable;
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+
+public class MySQL {
+
+    private static Connection connection;
+
+    public static void setConnection(String host, String user, String pass, String database, @Nullable String port) {
+        if (port == null) port = "3306";
+        if (host == null || user == null || pass == null) return;
+
+        try {
+            connection = DriverManager.getConnection("jdbc:mysql://"
+            + host + ":" + port + "/" + database + "?autoReconnect=true&useSSL=false", user, pass);
+            // TODO SQL successfully connected message
+        } catch(SQLException ex) {
+            // TODO SQL couldn't connect message
+        }
+    }
+
+    public static void connect(String host, String user, String pass, String database, @Nullable String port) {
+        if (!isConnected()) {
+            setConnection(host, user, pass, database, port);
+        }
+    }
+
+    public static void disconnect() {
+        try {
+            if (isConnected()) {
+                connection.close();
+            }
+        } catch(SQLException ex) {
+            // TODO Couldn't disconnect SQL connection message. (Possible Solutions: There's no sql connection (SQL is not connected)).
+        }
+    }
+
+    public static boolean isConnected() {
+        if (connection != null)
+            try {
+                return !connection.isClosed();
+            } catch (SQLException e) {
+                // TODO SQL Connection error message.
+            }
+        return false;
+    }
+
+    public static Connection getConnection() {
+        return connection;
+    }
+
+}

src/main/java/io/github/simplexdev/simplexcore/sql/SQLite.java

@@ -0,0 +1,8 @@
+package io.github.simplexdev.simplexcore.sql;
+
+public class SQLite {
+
+    /*
+    TODO
+     */
+}