sqllite class

package com.repoai.android.mysmarthouse;

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.database.sqlite.SQLiteStatement;

public class UserSQLlite extends SQLiteOpenHelper implements UserAble {
    Context context;
    //name of the DB file in our phone
    public static final String DB_NAME="smartHouse.db";
    //name of the table
    String table_name;
    //an instance to our SqliteDatabase
    SQLiteDatabase db;

    public UserSQLlite(Context context) { //String table_name
        super(context,DB_NAME,null,1);
        this.context = context;
        //this.table_name=table_name;
        //set our data base to read and write mode.
        db=this.getWritableDatabase();
    }

    @Override
    public boolean createUser(String userName, String password) {
        //method I - the good one

        //create instance of ContentValues to hold our values
        ContentValues myValues = new ContentValues();
        //insert data by key and value
        myValues.put("userName",userName);
        myValues.put("password",password);
        //putting our values into table and getting a result which reflact record id
        //if we get -1, we had an error
        long res=db.insert(this.table_name,null,myValues);
        //return true if we not get -1, error
        return res!=(-1);

        /*
        //method II
        //create sql string - INSERT INTO [Table name] (field name,field name) values (value 1, value2)
        String sql = "INSERT INTO "+this.table_name+" (userName,password) values ("+userName+","+password+")";
        //we are compilng the string to sql string to SQL statment
        SQLiteStatement statement =db.compileStatement(sql);
        //we send the sql command, result of (-1) is an error
        long res2=statement.executeInsert();
        //return res2!=(-1);

        //method III
        //create sql string - INSERT INTO [Table name] (field name,field name) values (value 1, value2)
        String sql2 = "INSERT INTO "+this.table_name+" (userName,password) values ("+userName+","+password+")";
        db.execSQL(sql2);
        return true;
        */
    }

    public boolean createRoom(String roomName, String roomDescription, Boolean isActive,
                              int numOfDevices, boolean present)
    {
        //create instance of contentValues
        ContentValues myValues = new ContentValues();
        myValues.put("roomName", roomName);
        myValues.put("roomDescription",roomDescription);
        myValues.put("isActive",isActive?1:0);
        myValues.put("numOfDevices",numOfDevices);
        myValues.put("present",present?1:0);
        //put our data into the DB
        long res=db.insert("rooms",null,myValues);
        return res!=(-1);
    }

    public Cursor getAllRooms()
    {
        //using Cursor to hold our raw data (Cursor is a collection type object)
        Cursor res =db.rawQuery("SELECT * FROM rooms",null);
        return res;
    }

    public Cursor getAllDevice(int roomID)
    {
        Cursor res = db.rawQuery("SELECT * FROM devices WHERE roomID="+roomID,null);
        return res;
    }

    public void deleteDevice(int deviceID)
    {
        db.execSQL("DELETE FROM devices WHERE deviceID="+deviceID);
    }



    @Override
    public boolean userExists(String userName) {
        return false;
    }

    @Override
    public boolean checkUser(String userName, String password) {
        return false;
    }

    @Override
    public void onCreate(SQLiteDatabase db) {
        //create user table
        String sqlStatment="CREATE TABLE IF NOT EXISTS users ";
        sqlStatment+= "id INTEGER PRIMARY KEY AUTOINCREMENT, userName TEXT PRIMARY KEY, password TEXT";
        db.execSQL(sqlStatment);

        //create rooms table
        String roomStatemt="CREATE TABLE IF NOT EXISTS rooms ";
        roomStatemt+="id INTEGER PRIMARY KEY AUTOINCREMENT, roomName TEXT, roomDescription TEXT, ";
        roomStatemt+="isActive INTEGER, numOfDevices INTEGER, present INTEGER";


    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        //do not touch!!!!!
        //db.execSQL("DROP TABLE IF EXISTS "+this.table_name);
    }
}