tnhfw / tnh-fw

core/classes/Database.php

Indentation +1223 added lines, -1223 removed lines

@@ -1,5 +1,5 @@ 
 <?php
-    defined('ROOT_PATH') || exit('Access denied');
+	defined('ROOT_PATH') || exit('Access denied');
   /**
    * TNH Framework
    *
@@ -22,183 +22,183 @@ 
    * You should have received a copy of the GNU General Public License
    * along with this program; if not, write to the Free Software
    * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
-  */
+   */
   class Database{
 	
 	/**
 	 * The PDO instance
 	 * @var object
-	*/
-    private $pdo                 = null;
+	 */
+	private $pdo                 = null;
     
 	/**
 	 * The database name used for the application
 	 * @var string
-	*/
+	 */
 	private $databaseName        = null;
     
 	/**
 	 * The SQL SELECT statment
 	 * @var string
-	*/
+	 */
 	private $select              = '*';
 	
 	/**
 	 * The SQL FROM statment
 	 * @var string
-	*/
-    private $from                = null;
+	 */
+	private $from                = null;
 	
 	/**
 	 * The SQL WHERE statment
 	 * @var string
-	*/
-    private $where               = null;
+	 */
+	private $where               = null;
 	
 	/**
 	 * The SQL LIMIT statment
 	 * @var string
-	*/
-    private $limit               = null;
+	 */
+	private $limit               = null;
 	
 	/**
 	 * The SQL JOIN statment
 	 * @var string
-	*/
-    private $join                = null;
+	 */
+	private $join                = null;
 	
 	/**
 	 * The SQL ORDER BY statment
 	 * @var string
-	*/
-    private $orderBy             = null;
+	 */
+	private $orderBy             = null;
 	
 	/**
 	 * The SQL GROUP BY statment
 	 * @var string
-	*/
-    private $groupBy             = null;
+	 */
+	private $groupBy             = null;
 	
 	/**
 	 * The SQL HAVING statment
 	 * @var string
-	*/
-    private $having              = null;
+	 */
+	private $having              = null;
 	
 	/**
 	 * The number of rows returned by the last query
 	 * @var int
-	*/
-    private $numRows             = 0;
+	 */
+	private $numRows             = 0;
 	
 	/**
 	 * The last insert id for the primary key column that have auto increment or sequence
 	 * @var mixed
-	*/
-    private $insertId            = null;
+	 */
+	private $insertId            = null;
 	
 	/**
 	 * The full SQL query statment after build for each command
 	 * @var string
-	*/
-    private $query               = null;
+	 */
+	private $query               = null;
 	
 	/**
 	 * The error returned for the last query
 	 * @var string
-	*/
-    private $error               = null;
+	 */
+	private $error               = null;
 	
 	/**
 	 * The result returned for the last query
 	 * @var mixed
-	*/
-    private $result              = array();
+	 */
+	private $result              = array();
 	
 	/**
 	 * The prefix used in each database table
 	 * @var string
-	*/
-    private $prefix              = null;
+	 */
+	private $prefix              = null;
 	
 	/**
 	 * The list of SQL valid operators
 	 * @var array
-	*/
-    private $operatorList        = array('=','!=','<','>','<=','>=','<>');
+	 */
+	private $operatorList        = array('=','!=','<','>','<=','>=','<>');
     
 	/**
 	 * The cache default time to live in second. 0 means no need to use the cache feature
 	 * @var int
-	*/
+	 */
 	private $cacheTtl              = 0;
 	
 	/**
 	 * The cache current time to live. 0 means no need to use the cache feature
 	 * @var int
-	*/
-    private $temporaryCacheTtl   = 0;
+	 */
+	private $temporaryCacheTtl   = 0;
 	
 	/**
 	 * The number of executed query for the current request
 	 * @var int
-	*/
-    private $queryCount          = 0;
+	 */
+	private $queryCount          = 0;
 	
 	/**
 	 * The default data to be used in the statments query INSERT, UPDATE
 	 * @var array
-	*/
-    private $data                = array();
+	 */
+	private $data                = array();
 	
 	/**
 	 * The database configuration
 	 * @var array
-	*/
-    private $config              = array();
+	 */
+	private $config              = array();
 	
 	/**
 	 * The logger instance
 	 * @var Log
 	 */
-    private $logger              = null;
-
-
-    /**
-    * The cache instance
-    * @var CacheInterface
-    */
-    private $cacheInstance       = null;
-
-     /**
-    * The benchmark instance
-    * @var Benchmark
-    */
-    private $benchmarkInstance   = null;
-
-
-    /**
-     * Construct new database
-     * @param array $overwriteConfig the config to overwrite with the config set in database.php
-     * @param object $logger the log instance
-     */
-    public function __construct($overwriteConfig = array(), Log $logger = null){
-        /**
-         * instance of the Log class
-         */
-        if(is_object($logger)){
-          $this->logger = $logger;
-        }
-        else{
-            $this->logger =& class_loader('Log', 'classes');
-            $this->logger->setLogger('Library::Database');
-        }
-
-        $db = array();
-      	if(file_exists(CONFIG_PATH . 'database.php')){
-          //here don't use require_once because somewhere user can create database instance directly
-      	  require CONFIG_PATH . 'database.php';
-        }
+	private $logger              = null;
+
+
+	/**
+	 * The cache instance
+	 * @var CacheInterface
+	 */
+	private $cacheInstance       = null;
+
+	 /**
+	  * The benchmark instance
+	  * @var Benchmark
+	  */
+	private $benchmarkInstance   = null;
+
+
+	/**
+	 * Construct new database
+	 * @param array $overwriteConfig the config to overwrite with the config set in database.php
+	 * @param object $logger the log instance
+	 */
+	public function __construct($overwriteConfig = array(), Log $logger = null){
+		/**
+		 * instance of the Log class
+		 */
+		if(is_object($logger)){
+		  $this->logger = $logger;
+		}
+		else{
+			$this->logger =& class_loader('Log', 'classes');
+			$this->logger->setLogger('Library::Database');
+		}
+
+		$db = array();
+	  	if(file_exists(CONFIG_PATH . 'database.php')){
+		  //here don't use require_once because somewhere user can create database instance directly
+	  	  require CONFIG_PATH . 'database.php';
+		}
           
 				if(! empty($overwriteConfig)){
 				  $db = array_merge($db, $overwriteConfig);
@@ -211,1018 +211,1018 @@ 
 				$config['charset']   = isset($db['charset']) ? $db['charset'] : 'utf8';
 				$config['collation'] = isset($db['collation']) ? $db['collation'] : 'utf8_general_ci';
 				$config['prefix']    = isset($db['prefix']) ? $db['prefix'] : '';
-        $port = '';
-        if(strstr($config['hostname'], ':')){
-          $p = explode(':', $config['hostname']);
-          $port = isset($p[1]) ? $p[1] : '';
-        }
+		$port = '';
+		if(strstr($config['hostname'], ':')){
+		  $p = explode(':', $config['hostname']);
+		  $port = isset($p[1]) ? $p[1] : '';
+		}
 				$config['port']      = $port;
 				
 		  	$this->setDatabaseConfiguration($config);
 
-    		$this->temporaryCacheTtl = $this->cacheTtl;
-    }
-
-    /**
-     * This is used to connect to database
-     * @return bool 
-     */
-    public function connect(){
-      $config = $this->getDatabaseConfiguration();
-      if(! empty($config)){
-        try{
-            $dsn = '';
-            if($config['driver'] == 'mysql' || $config['driver'] == '' || $config['driver'] == 'pgsql'){
-                $dsn = $config['driver'] . ':host=' . $config['hostname'] . ';'
-                . (($config['port']) != '' ? 'port=' . $config['port'] . ';' : '')
-                . 'dbname=' . $config['database'];
-            }
-            else if ($config['driver'] == 'sqlite'){
-              $dsn = 'sqlite:' . $config['database'];
-            }
-            else if($config['driver'] == 'oracle'){
-              $dsn = 'oci:dbname=' . $config['host'] . '/' . $config['database'];
-            }
+			$this->temporaryCacheTtl = $this->cacheTtl;
+	}
+
+	/**
+	 * This is used to connect to database
+	 * @return bool 
+	 */
+	public function connect(){
+	  $config = $this->getDatabaseConfiguration();
+	  if(! empty($config)){
+		try{
+			$dsn = '';
+			if($config['driver'] == 'mysql' || $config['driver'] == '' || $config['driver'] == 'pgsql'){
+				$dsn = $config['driver'] . ':host=' . $config['hostname'] . ';'
+				. (($config['port']) != '' ? 'port=' . $config['port'] . ';' : '')
+				. 'dbname=' . $config['database'];
+			}
+			else if ($config['driver'] == 'sqlite'){
+			  $dsn = 'sqlite:' . $config['database'];
+			}
+			else if($config['driver'] == 'oracle'){
+			  $dsn = 'oci:dbname=' . $config['host'] . '/' . $config['database'];
+			}
             
-            $this->pdo = new PDO($dsn, $config['username'], $config['password']);
-            $this->pdo->exec("SET NAMES '" . $config['charset'] . "' COLLATE '" . $config['collation'] . "'");
-            $this->pdo->exec("SET CHARACTER SET '" . $config['charset'] . "'");
-            $this->pdo->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_OBJ);
-            return true;
-          }
-          catch (PDOException $e){
-            $this->logger->fatal($e->getMessage());
-            show_error('Cannot connect to Database.');
-            return false;
-          }
-      }
-      else{
-        show_error('Database configuration is not set.');
-        return false;
-      }
-    }
-
-    /**
-     * Set the SQL FROM statment
-     * @param  string|array $table the table name or array of table list
-     * @return object        the current Database instance
-     */
-    public function from($table){
-      if(is_array($table)){
-        $froms = '';
-        foreach($table as $key){
-          $froms .= $this->prefix . $key . ', ';
-        }
-        $this->from = rtrim($froms, ', ');
-      }
-      else{
-        $this->from = $this->prefix . $table;
-      }
-      return $this;
-    }
-
-    /**
-     * Set the SQL SELECT statment
-     * @param  string|array $fields the field name or array of field list
-     * @return object        the current Database instance
-     */
-    public function select($fields){
-      $select = (is_array($fields) ? implode(', ', $fields) : $fields);
-      $this->select = ($this->select == '*' ? $select : $this->select . ', ' . $select);
-      return $this;
-    }
-
-    /**
-     * Set the SQL SELECT DISTINCT statment
-     * @param  string $field the field name to distinct
-     * @return object        the current Database instance
-     */
-    public function distinct($field){
-      $distinct = ' DISTINCT ' . $field;
-      $this->select = ($this->select == '*' ? $distinct : $this->select . ', ' . $distinct);
-
-      return $this;
-    }
-
-    /**
-     * Set the SQL function MAX in SELECT statment
-     * @param  string $field the field name
-     * @param  string $name  if is not null represent the alias used for this field in the result
-     * @return object        the current Database instance
-     */
-    public function max($field, $name = null){
-      $func = 'MAX(' . $field . ')' . (!is_null($name) ? ' AS ' . $name : '');
-      $this->select = ($this->select == '*' ? $func : $this->select . ', ' . $func);
-      return $this;
-    }
-
-    /**
-     * Set the SQL function MIN in SELECT statment
-     * @param  string $field the field name
-     * @param  string $name  if is not null represent the alias used for this field in the result
-     * @return object        the current Database instance
-     */
-    public function min($field, $name = null){
-      $func = 'MIN(' . $field . ')' . (!is_null($name) ? ' AS ' . $name : '');
-      $this->select = ($this->select == '*' ? $func : $this->select . ', ' . $func);
-      return $this;
-    }
-
-    /**
-     * Set the SQL function SUM in SELECT statment
-     * @param  string $field the field name
-     * @param  string $name  if is not null represent the alias used for this field in the result
-     * @return object        the current Database instance
-     */
-    public function sum($field, $name = null){
-      $func = 'SUM(' . $field . ')' . (!is_null($name) ? ' AS ' . $name : '');
-      $this->select = ($this->select == '*' ? $func : $this->select . ', ' . $func);
-      return $this;
-    }
-
-    /**
-     * Set the SQL function COUNT in SELECT statment
-     * @param  string $field the field name
-     * @param  string $name  if is not null represent the alias used for this field in the result
-     * @return object        the current Database instance
-     */
-    public function count($field = '*', $name = null){
-      $func = 'COUNT(' . $field . ')' . (!is_null($name) ? ' AS ' . $name : '');
-      $this->select = ($this->select == '*' ? $func : $this->select . ', ' . $func);
-      return $this;
-    }
-
-    /**
-     * Set the SQL function AVG in SELECT statment
-     * @param  string $field the field name
-     * @param  string $name  if is not null represent the alias used for this field in the result
-     * @return object        the current Database instance
-     */
-    public function avg($field, $name = null){
-      $func = 'AVG(' . $field . ')' . (!is_null($name) ? ' AS ' . $name : '');
-      $this->select = ($this->select == '*' ? $func : $this->select . ', ' . $func);
-      return $this;
-    }
-
-    /**
-     * Set the SQL JOIN statment
-     * @param  string $table  the join table name
-     * @param  string $field1 the first field for join conditions	
-     * @param  string $op     the join condition operator. If is null the default will be "="
-     * @param  string $field2 the second field for join conditions
-     * @param  string $type   the type of join (INNER, LEFT, RIGHT)
-     * @return object        the current Database instance
-     */
-    public function join($table, $field1 = null, $op = null, $field2 = null, $type = ''){
-      $on = $field1;
-      $table = $this->prefix . $table;
-      if(! is_null($op)){
-        $on = (! in_array($op, $this->operatorList) ? $this->prefix . $field1 . ' = ' . $this->prefix . $op : $this->prefix . $field1 . ' ' . $op . ' ' . $this->prefix . $field2);
-      }
-      if (is_null($this->join)){
-        $this->join = ' ' . $type . 'JOIN' . ' ' . $table . ' ON ' . $on;
-      }
-      else{
-        $this->join = $this->join . ' ' . $type . 'JOIN' . ' ' . $table . ' ON ' . $on;
-      }
-      return $this;
-    }
-
-    /**
-     * Set the SQL INNER JOIN statment
-     * @see  Database::join()
-     * @return object        the current Database instance
-     */
-    public function innerJoin($table, $field1, $op = null, $field2 = ''){
-      return $this->join($table, $field1, $op, $field2, 'INNER ');
-    }
-
-    /**
-     * Set the SQL LEFT JOIN statment
-     * @see  Database::join()
-     * @return object        the current Database instance
-     */
-    public function leftJoin($table, $field1, $op = null, $field2 = ''){
-      return $this->join($table, $field1, $op, $field2, 'LEFT ');
-	}
-
-	/**
-     * Set the SQL RIGHT JOIN statment
-     * @see  Database::join()
-     * @return object        the current Database instance
-     */
-    public function rightJoin($table, $field1, $op = null, $field2 = ''){
-      return $this->join($table, $field1, $op, $field2, 'RIGHT ');
-    }
-
-    /**
-     * Set the SQL FULL OUTER JOIN statment
-     * @see  Database::join()
-     * @return object        the current Database instance
-     */
-    public function fullOuterJoin($table, $field1, $op = null, $field2 = ''){
-    	return $this->join($table, $field1, $op, $field2, 'FULL OUTER ');
-    }
-
-    /**
-     * Set the SQL LEFT OUTER JOIN statment
-     * @see  Database::join()
-     * @return object        the current Database instance
-     */
-    public function leftOuterJoin($table, $field1, $op = null, $field2 = ''){
-      return $this->join($table, $field1, $op, $field2, 'LEFT OUTER ');
-    }
-
-    /**
-     * Set the SQL RIGHT OUTER JOIN statment
-     * @see  Database::join()
-     * @return object        the current Database instance
-     */
-    public function rightOuterJoin($table, $field1, $op = null, $field2 = ''){
-      return $this->join($table, $field1, $op, $field2, 'RIGHT OUTER ');
-    }
-
-    /**
-     * Set the SQL WHERE CLAUSE for IS NULL
-     * @param  string|array $field  the field name or array of field list
-     * @param  string $andOr the separator type used 'AND', 'OR', etc.
-     * @return object        the current Database instance
-     */
-    public function whereIsNull($field, $andOr = 'AND'){
-      if(is_array($field)){
-        foreach($field as $f){
-        	$this->whereIsNull($f, $andOr);
-        }
-      }
-      else{
-        if (! $this->where){
-          $this->where = $field.' IS NULL ';
-        }
-        else{
-            $this->where = $this->where . ' '.$andOr.' ' . $field.' IS NULL ';
-          }
-      }
-      return $this;
-    }
-
-    /**
-     * Set the SQL WHERE CLAUSE for IS NOT NULL
-     * @param  string|array $field  the field name or array of field list
-     * @param  string $andOr the separator type used 'AND', 'OR', etc.
-     * @return object        the current Database instance
-     */
-    public function whereIsNotNull($field, $andOr = 'AND'){
-      if(is_array($field)){
-        foreach($field as $f){
-          $this->whereIsNotNull($f, $andOr);
-        }
-      }
-      else{
-        if (! $this->where){
-          $this->where = $field.' IS NOT NULL ';
-        }
-        else{
-            $this->where = $this->where . ' '.$andOr.' ' . $field.' IS NOT NULL ';
-          }
-      }
-      return $this;
-    }
+			$this->pdo = new PDO($dsn, $config['username'], $config['password']);
+			$this->pdo->exec("SET NAMES '" . $config['charset'] . "' COLLATE '" . $config['collation'] . "'");
+			$this->pdo->exec("SET CHARACTER SET '" . $config['charset'] . "'");
+			$this->pdo->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_OBJ);
+			return true;
+		  }
+		  catch (PDOException $e){
+			$this->logger->fatal($e->getMessage());
+			show_error('Cannot connect to Database.');
+			return false;
+		  }
+	  }
+	  else{
+		show_error('Database configuration is not set.');
+		return false;
+	  }
+	}
+
+	/**
+	 * Set the SQL FROM statment
+	 * @param  string|array $table the table name or array of table list
+	 * @return object        the current Database instance
+	 */
+	public function from($table){
+	  if(is_array($table)){
+		$froms = '';
+		foreach($table as $key){
+		  $froms .= $this->prefix . $key . ', ';
+		}
+		$this->from = rtrim($froms, ', ');
+	  }
+	  else{
+		$this->from = $this->prefix . $table;
+	  }
+	  return $this;
+	}
+
+	/**
+	 * Set the SQL SELECT statment
+	 * @param  string|array $fields the field name or array of field list
+	 * @return object        the current Database instance
+	 */
+	public function select($fields){
+	  $select = (is_array($fields) ? implode(', ', $fields) : $fields);
+	  $this->select = ($this->select == '*' ? $select : $this->select . ', ' . $select);
+	  return $this;
+	}
+
+	/**
+	 * Set the SQL SELECT DISTINCT statment
+	 * @param  string $field the field name to distinct
+	 * @return object        the current Database instance
+	 */
+	public function distinct($field){
+	  $distinct = ' DISTINCT ' . $field;
+	  $this->select = ($this->select == '*' ? $distinct : $this->select . ', ' . $distinct);
+
+	  return $this;
+	}
+
+	/**
+	 * Set the SQL function MAX in SELECT statment
+	 * @param  string $field the field name
+	 * @param  string $name  if is not null represent the alias used for this field in the result
+	 * @return object        the current Database instance
+	 */
+	public function max($field, $name = null){
+	  $func = 'MAX(' . $field . ')' . (!is_null($name) ? ' AS ' . $name : '');
+	  $this->select = ($this->select == '*' ? $func : $this->select . ', ' . $func);
+	  return $this;
+	}
+
+	/**
+	 * Set the SQL function MIN in SELECT statment
+	 * @param  string $field the field name
+	 * @param  string $name  if is not null represent the alias used for this field in the result
+	 * @return object        the current Database instance
+	 */
+	public function min($field, $name = null){
+	  $func = 'MIN(' . $field . ')' . (!is_null($name) ? ' AS ' . $name : '');
+	  $this->select = ($this->select == '*' ? $func : $this->select . ', ' . $func);
+	  return $this;
+	}
+
+	/**
+	 * Set the SQL function SUM in SELECT statment
+	 * @param  string $field the field name
+	 * @param  string $name  if is not null represent the alias used for this field in the result
+	 * @return object        the current Database instance
+	 */
+	public function sum($field, $name = null){
+	  $func = 'SUM(' . $field . ')' . (!is_null($name) ? ' AS ' . $name : '');
+	  $this->select = ($this->select == '*' ? $func : $this->select . ', ' . $func);
+	  return $this;
+	}
+
+	/**
+	 * Set the SQL function COUNT in SELECT statment
+	 * @param  string $field the field name
+	 * @param  string $name  if is not null represent the alias used for this field in the result
+	 * @return object        the current Database instance
+	 */
+	public function count($field = '*', $name = null){
+	  $func = 'COUNT(' . $field . ')' . (!is_null($name) ? ' AS ' . $name : '');
+	  $this->select = ($this->select == '*' ? $func : $this->select . ', ' . $func);
+	  return $this;
+	}
+
+	/**
+	 * Set the SQL function AVG in SELECT statment
+	 * @param  string $field the field name
+	 * @param  string $name  if is not null represent the alias used for this field in the result
+	 * @return object        the current Database instance
+	 */
+	public function avg($field, $name = null){
+	  $func = 'AVG(' . $field . ')' . (!is_null($name) ? ' AS ' . $name : '');
+	  $this->select = ($this->select == '*' ? $func : $this->select . ', ' . $func);
+	  return $this;
+	}
+
+	/**
+	 * Set the SQL JOIN statment
+	 * @param  string $table  the join table name
+	 * @param  string $field1 the first field for join conditions	
+	 * @param  string $op     the join condition operator. If is null the default will be "="
+	 * @param  string $field2 the second field for join conditions
+	 * @param  string $type   the type of join (INNER, LEFT, RIGHT)
+	 * @return object        the current Database instance
+	 */
+	public function join($table, $field1 = null, $op = null, $field2 = null, $type = ''){
+	  $on = $field1;
+	  $table = $this->prefix . $table;
+	  if(! is_null($op)){
+		$on = (! in_array($op, $this->operatorList) ? $this->prefix . $field1 . ' = ' . $this->prefix . $op : $this->prefix . $field1 . ' ' . $op . ' ' . $this->prefix . $field2);
+	  }
+	  if (is_null($this->join)){
+		$this->join = ' ' . $type . 'JOIN' . ' ' . $table . ' ON ' . $on;
+	  }
+	  else{
+		$this->join = $this->join . ' ' . $type . 'JOIN' . ' ' . $table . ' ON ' . $on;
+	  }
+	  return $this;
+	}
+
+	/**
+	 * Set the SQL INNER JOIN statment
+	 * @see  Database::join()
+	 * @return object        the current Database instance
+	 */
+	public function innerJoin($table, $field1, $op = null, $field2 = ''){
+	  return $this->join($table, $field1, $op, $field2, 'INNER ');
+	}
+
+	/**
+	 * Set the SQL LEFT JOIN statment
+	 * @see  Database::join()
+	 * @return object        the current Database instance
+	 */
+	public function leftJoin($table, $field1, $op = null, $field2 = ''){
+	  return $this->join($table, $field1, $op, $field2, 'LEFT ');
+	}
+
+	/**
+	 * Set the SQL RIGHT JOIN statment
+	 * @see  Database::join()
+	 * @return object        the current Database instance
+	 */
+	public function rightJoin($table, $field1, $op = null, $field2 = ''){
+	  return $this->join($table, $field1, $op, $field2, 'RIGHT ');
+	}
+
+	/**
+	 * Set the SQL FULL OUTER JOIN statment
+	 * @see  Database::join()
+	 * @return object        the current Database instance
+	 */
+	public function fullOuterJoin($table, $field1, $op = null, $field2 = ''){
+		return $this->join($table, $field1, $op, $field2, 'FULL OUTER ');
+	}
+
+	/**
+	 * Set the SQL LEFT OUTER JOIN statment
+	 * @see  Database::join()
+	 * @return object        the current Database instance
+	 */
+	public function leftOuterJoin($table, $field1, $op = null, $field2 = ''){
+	  return $this->join($table, $field1, $op, $field2, 'LEFT OUTER ');
+	}
+
+	/**
+	 * Set the SQL RIGHT OUTER JOIN statment
+	 * @see  Database::join()
+	 * @return object        the current Database instance
+	 */
+	public function rightOuterJoin($table, $field1, $op = null, $field2 = ''){
+	  return $this->join($table, $field1, $op, $field2, 'RIGHT OUTER ');
+	}
+
+	/**
+	 * Set the SQL WHERE CLAUSE for IS NULL
+	 * @param  string|array $field  the field name or array of field list
+	 * @param  string $andOr the separator type used 'AND', 'OR', etc.
+	 * @return object        the current Database instance
+	 */
+	public function whereIsNull($field, $andOr = 'AND'){
+	  if(is_array($field)){
+		foreach($field as $f){
+			$this->whereIsNull($f, $andOr);
+		}
+	  }
+	  else{
+		if (! $this->where){
+		  $this->where = $field.' IS NULL ';
+		}
+		else{
+			$this->where = $this->where . ' '.$andOr.' ' . $field.' IS NULL ';
+		  }
+	  }
+	  return $this;
+	}
+
+	/**
+	 * Set the SQL WHERE CLAUSE for IS NOT NULL
+	 * @param  string|array $field  the field name or array of field list
+	 * @param  string $andOr the separator type used 'AND', 'OR', etc.
+	 * @return object        the current Database instance
+	 */
+	public function whereIsNotNull($field, $andOr = 'AND'){
+	  if(is_array($field)){
+		foreach($field as $f){
+		  $this->whereIsNotNull($f, $andOr);
+		}
+	  }
+	  else{
+		if (! $this->where){
+		  $this->where = $field.' IS NOT NULL ';
+		}
+		else{
+			$this->where = $this->where . ' '.$andOr.' ' . $field.' IS NOT NULL ';
+		  }
+	  }
+	  return $this;
+	}
     
-    /**
-     * Set the SQL WHERE CLAUSE statment
-     * @param  string|array  $where the where field or array of field list
-     * @param  string  $op     the condition operator. If is null the default will be "="
-     * @param  mixed  $val    the where value
-     * @param  string  $type   the type used for this where clause (NOT, etc.)
-     * @param  string  $andOr the separator type used 'AND', 'OR', etc.
-     * @param  boolean $escape whether to escape or not the $val
-     * @return object        the current Database instance
-     */
-    public function where($where, $op = null, $val = null, $type = '', $andOr = 'AND', $escape = true){
-      if (is_array($where)){
-        $_where = array();
-        foreach ($where as $column => $data){
-          if(is_null($data)){
-            $data = '';
-          }
-          $_where[] = $type . $column . '=' . ($escape ? $this->escape($data) : $data);
-        }
-        $where = implode(' '.$andOr.' ', $_where);
-      }
-      else{
-        if(is_array($op)){
-          $x = explode('?', $where);
-          $w = '';
-          foreach($x as $k => $v){
-            if(! empty($v)){
-                if(isset($op[$k]) && is_null($op[$k])){
-                  $op[$k] = '';
-                }
-                $w .= $type . $v . (isset($op[$k]) ? ($escape ? $this->escape($op[$k]) : $op[$k]) : '');
-            }
-          }
-          $where = $w;
-        }
-        else if (! in_array((string)$op, $this->operatorList)){
-          if(is_null($op)){
-            $op = '';
-          }
-        	$where = $type . $where . ' = ' . ($escape ? $this->escape($op) : $op);
-        }
-        else{
-          if(is_null($val)){
-            $val = '';
-          }
-        	$where = $type . $where . $op . ($escape ? $this->escape($val) : $val);
-        }
-      }
-      if (is_null($this->where)){
-        $this->where = $where;
-      }
-      else{
-        if(substr($this->where, -1) == '('){
-          $this->where = $this->where . ' ' . $where;
-        }
-        else{
-          $this->where = $this->where . ' '.$andOr.' ' . $where;
-        }
-      }
-      return $this;
-    }
-
-    /**
-     * Set the SQL WHERE CLAUSE statment using OR
-     * @see  Database::where()
-     * @return object        the current Database instance
-     */
-    public function orWhere($where, $op = null, $val = null, $escape = true){
-      return $this->where($where, $op, $val, '', 'OR', $escape);
-    }
-
-
-    /**
-     * Set the SQL WHERE CLAUSE statment using AND and NOT
-     * @see  Database::where()
-     * @return object        the current Database instance
-     */
-    public function notWhere($where, $op = null, $val = null, $escape = true){
-      return $this->where($where, $op, $val, 'NOT ', 'AND', $escape);
-    }
-
-    /**
-     * Set the SQL WHERE CLAUSE statment using OR and NOT
-     * @see  Database::where()
-     * @return object        the current Database instance
-     */
-    public function orNotWhere($where, $op = null, $val = null, $escape = true){
-    	return $this->where($where, $op, $val, 'NOT ', 'OR', $escape);
-    }
-
-    /**
-     * Set the opened parenthesis for the complex SQL query
-     * @param  string $type   the type of this grouped (NOT, etc.)
-     * @param  string $andOr the multiple conditions separator (AND, OR, etc.)
-     * @return object        the current Database instance
-     */
-    public function groupStart($type = '', $andOr = ' AND'){
-      if (is_null($this->where)){
-        $this->where = $type . ' (';
-      }
-      else{
-          if(substr($this->where, -1) == '('){
-            $this->where .= $type . ' (';
-          }
-          else{
-          	$this->where .= $andOr . ' ' . $type . ' (';
-          }
-      }
-      return $this;
-    }
-
-    /**
-     * Set the opened parenthesis for the complex SQL query using NOT type
-     * @see  Database::groupStart()
-     * @return object        the current Database instance
-     */
-    public function notGroupStart(){
-      return $this->groupStart('NOT');
-    }
-
-    /**
-     * Set the opened parenthesis for the complex SQL query using OR for separator
-     * @see  Database::groupStart()
-     * @return object        the current Database instance
-     */
-    public function orGroupStart(){
-      return $this->groupStart('', ' OR');
-    }
-
-     /**
-     * Set the opened parenthesis for the complex SQL query using OR for separator and NOT for type
-     * @see  Database::groupStart()
-     * @return object        the current Database instance
-     */
-    public function orNotGroupStart(){
-      return $this->groupStart('NOT', ' OR');
-    }
-
-    /**
-     * Close the parenthesis for the grouped SQL
-     * @return object        the current Database instance
-     */
-    public function groupEnd(){
-      $this->where .= ')';
-      return $this;
-    }
-
-    /**
-     * Set the SQL WHERE CLAUSE statment for IN
-     * @param  string  $field  the field name for IN statment
-     * @param  array   $keys   the list of values used
-     * @param  string  $type   the condition separator type (NOT)
-     * @param  string  $andOr the multiple conditions separator (OR, AND)
-     * @param  boolean $escape whether to escape or not the values
-     * @return object        the current Database instance
-     */
-    public function in($field, array $keys, $type = '', $andOr = 'AND', $escape = true){
-      if (is_array($keys)){
-        $_keys = array();
-        foreach ($keys as $k => $v){
-          if(is_null($v)){
-            $v = '';
-          }
-          $_keys[] = (is_numeric($v) ? $v : ($escape ? $this->escape($v) : $v));
-        }
-        $keys = implode(', ', $_keys);
-        if (is_null($this->where)){
-          $this->where = $field . ' ' . $type . 'IN (' . $keys . ')';
-        }
-        else{
-          if(substr($this->where, -1) == '('){
-            $this->where = $this->where . ' ' . $field . ' '.$type.'IN (' . $keys . ')';
-          }
-          else{
-            $this->where = $this->where . ' ' . $andOr . ' ' . $field . ' '.$type.'IN (' . $keys . ')';
-          }
-        }
-      }
-      return $this;
-    }
-
-    /**
-     * Set the SQL WHERE CLAUSE statment for NOT IN with AND separator
-     * @see  Database::in()
-     * @return object        the current Database instance
-     */
-    public function notIn($field, array $keys, $escape = true){
-      return $this->in($field, $keys, 'NOT ', 'AND', $escape);
-    }
-
-    /**
-     * Set the SQL WHERE CLAUSE statment for IN with OR separator
-     * @see  Database::in()
-     * @return object        the current Database instance
-     */
-    public function orIn($field, array $keys, $escape = true){
-      return $this->in($field, $keys, '', 'OR', $escape);
-    }
-
-    /**
-     * Set the SQL WHERE CLAUSE statment for NOT IN with OR separator
-     * @see  Database::in()
-     * @return object        the current Database instance
-     */
-    public function orNotIn($field, array $keys, $escape = true){
-      return $this->in($field, $keys, 'NOT ', 'OR', $escape);
-    }
-
-    /**
-     * Set the SQL WHERE CLAUSE statment for BETWEEN
-     * @param  string  $field  the field used for the BETWEEN statment
-     * @param  mixed  $value1 the BETWEEN begin value
-     * @param  mixed  $value2 the BETWEEN end value
-     * @param  string  $type   the condition separator type (NOT)
-     * @param  string  $andOr the multiple conditions separator (OR, AND)
-     * @param  boolean $escape whether to escape or not the values
-     * @return object        the current Database instance
-     */
-    public function between($field, $value1, $value2, $type = '', $andOr = 'AND', $escape = true){
-      if(is_null($value1)){
-        $value1 = '';
-      }
-      if(is_null($value2)){
-        $value2 = '';
-      }
-      if (is_null($this->where)){
-      	$this->where = $field . ' ' . $type . 'BETWEEN ' . ($escape ? $this->escape($value1) : $value1) . ' AND ' . ($escape ? $this->escape($value2) : $value2);
-      }
-      else{
-        if(substr($this->where, -1) == '('){
-          $this->where = $this->where . ' ' . $field . ' ' . $type . 'BETWEEN ' . ($escape ? $this->escape($value1) : $value1) . ' AND ' . ($escape ? $this->escape($value2) : $value2);
-        }
-        else{
-          $this->where = $this->where . ' ' . $andOr . ' ' . $field . ' ' . $type . 'BETWEEN ' . ($escape ? $this->escape($value1) : $value1) . ' AND ' . ($escape ? $this->escape($value2) : $value2);
-        }
-      }
-      return $this;
-    }
-
-    /**
-     * Set the SQL WHERE CLAUSE statment for BETWEEN with NOT type and AND separator
-     * @see  Database::between()
-     * @return object        the current Database instance
-     */
-    public function notBetween($field, $value1, $value2, $escape = true){
-      return $this->between($field, $value1, $value2, 'NOT ', 'AND', $escape);
-    }
-
-    /**
-     * Set the SQL WHERE CLAUSE statment for BETWEEN with OR separator
-     * @see  Database::between()
-     * @return object        the current Database instance
-     */
-    public function orBetween($field, $value1, $value2, $escape = true){
-      return $this->between($field, $value1, $value2, '', 'OR', $escape);
-    }
-
-    /**
-     * Set the SQL WHERE CLAUSE statment for BETWEEN with NOT type and OR separator
-     * @see  Database::between()
-     * @return object        the current Database instance
-     */
-    public function orNotBetween($field, $value1, $value2, $escape = true){
-      return $this->between($field, $value1, $value2, 'NOT ', 'OR', $escape);
-    }
-
-    /**
-     * Set the SQL WHERE CLAUSE statment for LIKE
-     * @param  string  $field  the field name used in LIKE statment
-     * @param  string  $data   the LIKE value for this field including the '%', and '_' part
-     * @param  string  $type   the condition separator type (NOT)
-     * @param  string  $andOr the multiple conditions separator (OR, AND)
-     * @param  boolean $escape whether to escape or not the values
-     * @return object        the current Database instance
-     */
-    public function like($field, $data, $type = '', $andOr = 'AND', $escape = true){
-      if(is_null($data)){
-        $data = '';
-      }
-      $like = $escape ? $this->escape($data) : $data;
-      if (is_null($this->where)){
-        $this->where = $field . ' ' . $type . 'LIKE ' . $like;
-      }
-      else{
-        if(substr($this->where, -1) == '('){
-          $this->where = $this->where . ' ' . $field . ' ' . $type . 'LIKE ' . $like;
-        }
-        else{
-          $this->where = $this->where . ' '.$andOr.' ' . $field . ' ' . $type . 'LIKE ' . $like;
-        }
-      }
-      return $this;
-    }
-
-    /**
-     * Set the SQL WHERE CLAUSE statment for LIKE with OR separator
-     * @see  Database::like()
-     * @return object        the current Database instance
-     */
-    public function orLike($field, $data, $escape = true){
-      return $this->like($field, $data, '', 'OR', $escape);
-    }
-
-    /**
-     * Set the SQL WHERE CLAUSE statment for LIKE with NOT type and AND separator
-     * @see  Database::like()
-     * @return object        the current Database instance
-     */
-    public function notLike($field, $data, $escape = true){
-      return $this->like($field, $data, 'NOT ', 'AND', $escape);
-    }
-
-    /**
-     * Set the SQL WHERE CLAUSE statment for LIKE with NOT type and OR separator
-     * @see  Database::like()
-     * @return object        the current Database instance
-     */
-    public function orNotLike($field, $data, $escape = true){
-      return $this->like($field, $data, 'NOT ', 'OR', $escape);
-    }
-
-    /**
-     * Set the SQL LIMIT statment
-     * @param  int $limit    the limit offset. If $limitEnd is null this will be the limit count
-     * like LIMIT n;
-     * @param  int $limitEnd the limit count
-     * @return object        the current Database instance
-     */
-    public function limit($limit, $limitEnd = null){
-      if(is_null($limit)){
-        return;
-      }
-      if (! is_null($limitEnd)){
-        $this->limit = $limit . ', ' . $limitEnd;
-      }
-      else{
-        $this->limit = $limit;
-      }
-      return $this;
-    }
-
-    /**
-     * Set the SQL ORDER BY CLAUSE statment
-     * @param  string $orderBy   the field name used for order
-     * @param  string $orderDir the order direction (ASC or DESC)
-     * @return object        the current Database instance
-     */
-    public function orderBy($orderBy, $orderDir = ' ASC'){
-      if (! is_null($orderDir)){
-        $this->orderBy = ! $this->orderBy ? ($orderBy . ' ' . strtoupper($orderDir)) : $this->orderBy . ', ' . $orderBy . ' ' . strtoupper($orderDir);
-      }
-      else{
-        if(stristr($orderBy, ' ') || $orderBy == 'rand()'){
-          $this->orderBy = ! $this->orderBy ? $orderBy : $this->orderBy . ', ' . $orderBy;
-        }
-        else{
-          $this->orderBy = ! $this->orderBy ? ($orderBy . ' ASC') : $this->orderBy . ', ' . ($orderBy . ' ASC');
-        }
-      }
-      return $this;
-    }
-
-    /**
-     * Set the SQL GROUP BY CLAUSE statment
-     * @param  string|array $field the field name used or array of field list
-     * @return object        the current Database instance
-     */
-    public function groupBy($field){
-      if(is_array($field)){
-        $this->groupBy = implode(', ', $field);
-      }
-      else{
-        $this->groupBy = $field;
-      }
-      return $this;
-    }
-
-    /**
-     * Set the SQL HAVING CLAUSE statment
-     * @param  string  $field  the field name used for HAVING statment
-     * @param  string|array  $op     the operator used or array
-     * @param  mixed  $val    the value for HAVING comparaison
-     * @param  boolean $escape whether to escape or not the values
-     * @return object        the current Database instance
-     */
-    public function having($field, $op = null, $val = null, $escape = true){
-      if(is_array($op)){
-        $x = explode('?', $field);
-        $w = '';
-        foreach($x as $k => $v){
-  	      if(!empty($v)){
-            if(isset($op[$k]) && is_null($op[$k])){
-              $op[$k] = '';
-            }
-  	      	$w .= $v . (isset($op[$k]) ? ($escape ? $this->escape($op[$k]) : $op[$k]) : '');
-  	      }
-      	}
-        $this->having = $w;
-      }
-      else if (! in_array($op, $this->operatorList)){
-        if(is_null($op)){
-          $op = '';
-        }
-        $this->having = $field . ' > ' . ($escape ? $this->escape($op) : $op);
-      }
-      else{
-        if(is_null($val)){
-          $val = '';
-        }
-        $this->having = $field . ' ' . $op . ' ' . ($escape ? $this->escape($val) : $val);
-      }
-      return $this;
-    }
-
-    /**
-     * Return the number of rows returned by the current query
-     * @return int
-     */
-    public function numRows(){
-      return $this->numRows;
-    }
-
-    /**
-     * Return the last insert id value
-     * @return mixed
-     */
-    public function insertId(){
-      return $this->insertId;
-    }
-
-    /**
-     * Show an error got from the current query (SQL command synthax error, database driver returned error, etc.)
-     */
-    public function error(){
+	/**
+	 * Set the SQL WHERE CLAUSE statment
+	 * @param  string|array  $where the where field or array of field list
+	 * @param  string  $op     the condition operator. If is null the default will be "="
+	 * @param  mixed  $val    the where value
+	 * @param  string  $type   the type used for this where clause (NOT, etc.)
+	 * @param  string  $andOr the separator type used 'AND', 'OR', etc.
+	 * @param  boolean $escape whether to escape or not the $val
+	 * @return object        the current Database instance
+	 */
+	public function where($where, $op = null, $val = null, $type = '', $andOr = 'AND', $escape = true){
+	  if (is_array($where)){
+		$_where = array();
+		foreach ($where as $column => $data){
+		  if(is_null($data)){
+			$data = '';
+		  }
+		  $_where[] = $type . $column . '=' . ($escape ? $this->escape($data) : $data);
+		}
+		$where = implode(' '.$andOr.' ', $_where);
+	  }
+	  else{
+		if(is_array($op)){
+		  $x = explode('?', $where);
+		  $w = '';
+		  foreach($x as $k => $v){
+			if(! empty($v)){
+				if(isset($op[$k]) && is_null($op[$k])){
+				  $op[$k] = '';
+				}
+				$w .= $type . $v . (isset($op[$k]) ? ($escape ? $this->escape($op[$k]) : $op[$k]) : '');
+			}
+		  }
+		  $where = $w;
+		}
+		else if (! in_array((string)$op, $this->operatorList)){
+		  if(is_null($op)){
+			$op = '';
+		  }
+			$where = $type . $where . ' = ' . ($escape ? $this->escape($op) : $op);
+		}
+		else{
+		  if(is_null($val)){
+			$val = '';
+		  }
+			$where = $type . $where . $op . ($escape ? $this->escape($val) : $val);
+		}
+	  }
+	  if (is_null($this->where)){
+		$this->where = $where;
+	  }
+	  else{
+		if(substr($this->where, -1) == '('){
+		  $this->where = $this->where . ' ' . $where;
+		}
+		else{
+		  $this->where = $this->where . ' '.$andOr.' ' . $where;
+		}
+	  }
+	  return $this;
+	}
+
+	/**
+	 * Set the SQL WHERE CLAUSE statment using OR
+	 * @see  Database::where()
+	 * @return object        the current Database instance
+	 */
+	public function orWhere($where, $op = null, $val = null, $escape = true){
+	  return $this->where($where, $op, $val, '', 'OR', $escape);
+	}
+
+
+	/**
+	 * Set the SQL WHERE CLAUSE statment using AND and NOT
+	 * @see  Database::where()
+	 * @return object        the current Database instance
+	 */
+	public function notWhere($where, $op = null, $val = null, $escape = true){
+	  return $this->where($where, $op, $val, 'NOT ', 'AND', $escape);
+	}
+
+	/**
+	 * Set the SQL WHERE CLAUSE statment using OR and NOT
+	 * @see  Database::where()
+	 * @return object        the current Database instance
+	 */
+	public function orNotWhere($where, $op = null, $val = null, $escape = true){
+		return $this->where($where, $op, $val, 'NOT ', 'OR', $escape);
+	}
+
+	/**
+	 * Set the opened parenthesis for the complex SQL query
+	 * @param  string $type   the type of this grouped (NOT, etc.)
+	 * @param  string $andOr the multiple conditions separator (AND, OR, etc.)
+	 * @return object        the current Database instance
+	 */
+	public function groupStart($type = '', $andOr = ' AND'){
+	  if (is_null($this->where)){
+		$this->where = $type . ' (';
+	  }
+	  else{
+		  if(substr($this->where, -1) == '('){
+			$this->where .= $type . ' (';
+		  }
+		  else{
+		  	$this->where .= $andOr . ' ' . $type . ' (';
+		  }
+	  }
+	  return $this;
+	}
+
+	/**
+	 * Set the opened parenthesis for the complex SQL query using NOT type
+	 * @see  Database::groupStart()
+	 * @return object        the current Database instance
+	 */
+	public function notGroupStart(){
+	  return $this->groupStart('NOT');
+	}
+
+	/**
+	 * Set the opened parenthesis for the complex SQL query using OR for separator
+	 * @see  Database::groupStart()
+	 * @return object        the current Database instance
+	 */
+	public function orGroupStart(){
+	  return $this->groupStart('', ' OR');
+	}
+
+	 /**
+	  * Set the opened parenthesis for the complex SQL query using OR for separator and NOT for type
+	  * @see  Database::groupStart()
+	  * @return object        the current Database instance
+	  */
+	public function orNotGroupStart(){
+	  return $this->groupStart('NOT', ' OR');
+	}
+
+	/**
+	 * Close the parenthesis for the grouped SQL
+	 * @return object        the current Database instance
+	 */
+	public function groupEnd(){
+	  $this->where .= ')';
+	  return $this;
+	}
+
+	/**
+	 * Set the SQL WHERE CLAUSE statment for IN
+	 * @param  string  $field  the field name for IN statment
+	 * @param  array   $keys   the list of values used
+	 * @param  string  $type   the condition separator type (NOT)
+	 * @param  string  $andOr the multiple conditions separator (OR, AND)
+	 * @param  boolean $escape whether to escape or not the values
+	 * @return object        the current Database instance
+	 */
+	public function in($field, array $keys, $type = '', $andOr = 'AND', $escape = true){
+	  if (is_array($keys)){
+		$_keys = array();
+		foreach ($keys as $k => $v){
+		  if(is_null($v)){
+			$v = '';
+		  }
+		  $_keys[] = (is_numeric($v) ? $v : ($escape ? $this->escape($v) : $v));
+		}
+		$keys = implode(', ', $_keys);
+		if (is_null($this->where)){
+		  $this->where = $field . ' ' . $type . 'IN (' . $keys . ')';
+		}
+		else{
+		  if(substr($this->where, -1) == '('){
+			$this->where = $this->where . ' ' . $field . ' '.$type.'IN (' . $keys . ')';
+		  }
+		  else{
+			$this->where = $this->where . ' ' . $andOr . ' ' . $field . ' '.$type.'IN (' . $keys . ')';
+		  }
+		}
+	  }
+	  return $this;
+	}
+
+	/**
+	 * Set the SQL WHERE CLAUSE statment for NOT IN with AND separator
+	 * @see  Database::in()
+	 * @return object        the current Database instance
+	 */
+	public function notIn($field, array $keys, $escape = true){
+	  return $this->in($field, $keys, 'NOT ', 'AND', $escape);
+	}
+
+	/**
+	 * Set the SQL WHERE CLAUSE statment for IN with OR separator
+	 * @see  Database::in()
+	 * @return object        the current Database instance
+	 */
+	public function orIn($field, array $keys, $escape = true){
+	  return $this->in($field, $keys, '', 'OR', $escape);
+	}
+
+	/**
+	 * Set the SQL WHERE CLAUSE statment for NOT IN with OR separator
+	 * @see  Database::in()
+	 * @return object        the current Database instance
+	 */
+	public function orNotIn($field, array $keys, $escape = true){
+	  return $this->in($field, $keys, 'NOT ', 'OR', $escape);
+	}
+
+	/**
+	 * Set the SQL WHERE CLAUSE statment for BETWEEN
+	 * @param  string  $field  the field used for the BETWEEN statment
+	 * @param  mixed  $value1 the BETWEEN begin value
+	 * @param  mixed  $value2 the BETWEEN end value
+	 * @param  string  $type   the condition separator type (NOT)
+	 * @param  string  $andOr the multiple conditions separator (OR, AND)
+	 * @param  boolean $escape whether to escape or not the values
+	 * @return object        the current Database instance
+	 */
+	public function between($field, $value1, $value2, $type = '', $andOr = 'AND', $escape = true){
+	  if(is_null($value1)){
+		$value1 = '';
+	  }
+	  if(is_null($value2)){
+		$value2 = '';
+	  }
+	  if (is_null($this->where)){
+	  	$this->where = $field . ' ' . $type . 'BETWEEN ' . ($escape ? $this->escape($value1) : $value1) . ' AND ' . ($escape ? $this->escape($value2) : $value2);
+	  }
+	  else{
+		if(substr($this->where, -1) == '('){
+		  $this->where = $this->where . ' ' . $field . ' ' . $type . 'BETWEEN ' . ($escape ? $this->escape($value1) : $value1) . ' AND ' . ($escape ? $this->escape($value2) : $value2);
+		}
+		else{
+		  $this->where = $this->where . ' ' . $andOr . ' ' . $field . ' ' . $type . 'BETWEEN ' . ($escape ? $this->escape($value1) : $value1) . ' AND ' . ($escape ? $this->escape($value2) : $value2);
+		}
+	  }
+	  return $this;
+	}
+
+	/**
+	 * Set the SQL WHERE CLAUSE statment for BETWEEN with NOT type and AND separator
+	 * @see  Database::between()
+	 * @return object        the current Database instance
+	 */
+	public function notBetween($field, $value1, $value2, $escape = true){
+	  return $this->between($field, $value1, $value2, 'NOT ', 'AND', $escape);
+	}
+
+	/**
+	 * Set the SQL WHERE CLAUSE statment for BETWEEN with OR separator
+	 * @see  Database::between()
+	 * @return object        the current Database instance
+	 */
+	public function orBetween($field, $value1, $value2, $escape = true){
+	  return $this->between($field, $value1, $value2, '', 'OR', $escape);
+	}
+
+	/**
+	 * Set the SQL WHERE CLAUSE statment for BETWEEN with NOT type and OR separator
+	 * @see  Database::between()
+	 * @return object        the current Database instance
+	 */
+	public function orNotBetween($field, $value1, $value2, $escape = true){
+	  return $this->between($field, $value1, $value2, 'NOT ', 'OR', $escape);
+	}
+
+	/**
+	 * Set the SQL WHERE CLAUSE statment for LIKE
+	 * @param  string  $field  the field name used in LIKE statment
+	 * @param  string  $data   the LIKE value for this field including the '%', and '_' part
+	 * @param  string  $type   the condition separator type (NOT)
+	 * @param  string  $andOr the multiple conditions separator (OR, AND)
+	 * @param  boolean $escape whether to escape or not the values
+	 * @return object        the current Database instance
+	 */
+	public function like($field, $data, $type = '', $andOr = 'AND', $escape = true){
+	  if(is_null($data)){
+		$data = '';
+	  }
+	  $like = $escape ? $this->escape($data) : $data;
+	  if (is_null($this->where)){
+		$this->where = $field . ' ' . $type . 'LIKE ' . $like;
+	  }
+	  else{
+		if(substr($this->where, -1) == '('){
+		  $this->where = $this->where . ' ' . $field . ' ' . $type . 'LIKE ' . $like;
+		}
+		else{
+		  $this->where = $this->where . ' '.$andOr.' ' . $field . ' ' . $type . 'LIKE ' . $like;
+		}
+	  }
+	  return $this;
+	}
+
+	/**
+	 * Set the SQL WHERE CLAUSE statment for LIKE with OR separator
+	 * @see  Database::like()
+	 * @return object        the current Database instance
+	 */
+	public function orLike($field, $data, $escape = true){
+	  return $this->like($field, $data, '', 'OR', $escape);
+	}
+
+	/**
+	 * Set the SQL WHERE CLAUSE statment for LIKE with NOT type and AND separator
+	 * @see  Database::like()
+	 * @return object        the current Database instance
+	 */
+	public function notLike($field, $data, $escape = true){
+	  return $this->like($field, $data, 'NOT ', 'AND', $escape);
+	}
+
+	/**
+	 * Set the SQL WHERE CLAUSE statment for LIKE with NOT type and OR separator
+	 * @see  Database::like()
+	 * @return object        the current Database instance
+	 */
+	public function orNotLike($field, $data, $escape = true){
+	  return $this->like($field, $data, 'NOT ', 'OR', $escape);
+	}
+
+	/**
+	 * Set the SQL LIMIT statment
+	 * @param  int $limit    the limit offset. If $limitEnd is null this will be the limit count
+	 * like LIMIT n;
+	 * @param  int $limitEnd the limit count
+	 * @return object        the current Database instance
+	 */
+	public function limit($limit, $limitEnd = null){
+	  if(is_null($limit)){
+		return;
+	  }
+	  if (! is_null($limitEnd)){
+		$this->limit = $limit . ', ' . $limitEnd;
+	  }
+	  else{
+		$this->limit = $limit;
+	  }
+	  return $this;
+	}
+
+	/**
+	 * Set the SQL ORDER BY CLAUSE statment
+	 * @param  string $orderBy   the field name used for order
+	 * @param  string $orderDir the order direction (ASC or DESC)
+	 * @return object        the current Database instance
+	 */
+	public function orderBy($orderBy, $orderDir = ' ASC'){
+	  if (! is_null($orderDir)){
+		$this->orderBy = ! $this->orderBy ? ($orderBy . ' ' . strtoupper($orderDir)) : $this->orderBy . ', ' . $orderBy . ' ' . strtoupper($orderDir);
+	  }
+	  else{
+		if(stristr($orderBy, ' ') || $orderBy == 'rand()'){
+		  $this->orderBy = ! $this->orderBy ? $orderBy : $this->orderBy . ', ' . $orderBy;
+		}
+		else{
+		  $this->orderBy = ! $this->orderBy ? ($orderBy . ' ASC') : $this->orderBy . ', ' . ($orderBy . ' ASC');
+		}
+	  }
+	  return $this;
+	}
+
+	/**
+	 * Set the SQL GROUP BY CLAUSE statment
+	 * @param  string|array $field the field name used or array of field list
+	 * @return object        the current Database instance
+	 */
+	public function groupBy($field){
+	  if(is_array($field)){
+		$this->groupBy = implode(', ', $field);
+	  }
+	  else{
+		$this->groupBy = $field;
+	  }
+	  return $this;
+	}
+
+	/**
+	 * Set the SQL HAVING CLAUSE statment
+	 * @param  string  $field  the field name used for HAVING statment
+	 * @param  string|array  $op     the operator used or array
+	 * @param  mixed  $val    the value for HAVING comparaison
+	 * @param  boolean $escape whether to escape or not the values
+	 * @return object        the current Database instance
+	 */
+	public function having($field, $op = null, $val = null, $escape = true){
+	  if(is_array($op)){
+		$x = explode('?', $field);
+		$w = '';
+		foreach($x as $k => $v){
+  		  if(!empty($v)){
+			if(isset($op[$k]) && is_null($op[$k])){
+			  $op[$k] = '';
+			}
+  		  	$w .= $v . (isset($op[$k]) ? ($escape ? $this->escape($op[$k]) : $op[$k]) : '');
+  		  }
+	  	}
+		$this->having = $w;
+	  }
+	  else if (! in_array($op, $this->operatorList)){
+		if(is_null($op)){
+		  $op = '';
+		}
+		$this->having = $field . ' > ' . ($escape ? $this->escape($op) : $op);
+	  }
+	  else{
+		if(is_null($val)){
+		  $val = '';
+		}
+		$this->having = $field . ' ' . $op . ' ' . ($escape ? $this->escape($val) : $val);
+	  }
+	  return $this;
+	}
+
+	/**
+	 * Return the number of rows returned by the current query
+	 * @return int
+	 */
+	public function numRows(){
+	  return $this->numRows;
+	}
+
+	/**
+	 * Return the last insert id value
+	 * @return mixed
+	 */
+	public function insertId(){
+	  return $this->insertId;
+	}
+
+	/**
+	 * Show an error got from the current query (SQL command synthax error, database driver returned error, etc.)
+	 */
+	public function error(){
   		if($this->error){
   			show_error('Query: "' . $this->query . '" Error: ' . $this->error, 'Database Error');
   		}
-    }
-
-    /**
-     * Get the result of one record rows returned by the current query
-     * @param  boolean $returnSQLQueryOrResultType if is boolean and true will return the SQL query string.
-     * If is string will determine the result type "array" or "object"
-     * @return mixed       the query SQL string or the record result
-     */
-    public function get($returnSQLQueryOrResultType = false){
-      $this->limit = 1;
-      $query = $this->getAll(true);
-      if($returnSQLQueryOrResultType === true){
-        return $query;
-      }
-      else{
-        return $this->query( $query, false, (($returnSQLQueryOrResultType == 'array') ? true : false) );
-      }
-    }
-
-    /**
-     * Get the result of record rows list returned by the current query
-     * @param  boolean $returnSQLQueryOrResultType if is boolean and true will return the SQL query string.
-     * If is string will determine the result type "array" or "object"
-     * @return mixed       the query SQL string or the record result
-     */
-    public function getAll($returnSQLQueryOrResultType = false){
-      $query = 'SELECT ' . $this->select . ' FROM ' . $this->from;
-      if (! is_null($this->join)){
-        $query .= $this->join;
-      }
+	}
+
+	/**
+	 * Get the result of one record rows returned by the current query
+	 * @param  boolean $returnSQLQueryOrResultType if is boolean and true will return the SQL query string.
+	 * If is string will determine the result type "array" or "object"
+	 * @return mixed       the query SQL string or the record result
+	 */
+	public function get($returnSQLQueryOrResultType = false){
+	  $this->limit = 1;
+	  $query = $this->getAll(true);
+	  if($returnSQLQueryOrResultType === true){
+		return $query;
+	  }
+	  else{
+		return $this->query( $query, false, (($returnSQLQueryOrResultType == 'array') ? true : false) );
+	  }
+	}
+
+	/**
+	 * Get the result of record rows list returned by the current query
+	 * @param  boolean $returnSQLQueryOrResultType if is boolean and true will return the SQL query string.
+	 * If is string will determine the result type "array" or "object"
+	 * @return mixed       the query SQL string or the record result
+	 */
+	public function getAll($returnSQLQueryOrResultType = false){
+	  $query = 'SELECT ' . $this->select . ' FROM ' . $this->from;
+	  if (! is_null($this->join)){
+		$query .= $this->join;
+	  }
 	  
-      if (! is_null($this->where)){
-        $query .= ' WHERE ' . $this->where;
-      }
+	  if (! is_null($this->where)){
+		$query .= ' WHERE ' . $this->where;
+	  }
 
-      if (! is_null($this->groupBy)){
-        $query .= ' GROUP BY ' . $this->groupBy;
-      }
+	  if (! is_null($this->groupBy)){
+		$query .= ' GROUP BY ' . $this->groupBy;
+	  }
 
-      if (! is_null($this->having)){
-        $query .= ' HAVING ' . $this->having;
-      }
+	  if (! is_null($this->having)){
+		$query .= ' HAVING ' . $this->having;
+	  }
 
-      if (! is_null($this->orderBy)){
-          $query .= ' ORDER BY ' . $this->orderBy;
-      }
+	  if (! is_null($this->orderBy)){
+		  $query .= ' ORDER BY ' . $this->orderBy;
+	  }
 
-      if(! is_null($this->limit)){
-      	$query .= ' LIMIT ' . $this->limit;
-      }
+	  if(! is_null($this->limit)){
+	  	$query .= ' LIMIT ' . $this->limit;
+	  }
 	  
 	  if($returnSQLQueryOrResultType === true){
-    	return $query;
-      }
-      else{
-    	return $this->query($query, true, (($returnSQLQueryOrResultType == 'array') ? true : false) );
-      }
-    }
-
-    /**
-     * Insert new record in the database
-     * @param  array   $data   the record data if is empty will use the $this->data array.
-     * @param  boolean $escape  whether to escape or not the values
-     * @return mixed          the insert id of the new record or null
-     */
-    public function insert($data = array(), $escape = true){
-      $column = array();
-      $val = array();
-      if(! $data && $this->getData()){
-        $columns = array_keys($this->getData());
-        $column = implode(',', $columns);
-        $val = implode(', ', $this->getData());
-      }
-      else{
-        $columns = array_keys($data);
-        $column = implode(',', $columns);
-        $val = implode(', ', ($escape ? array_map(array($this, 'escape'), $data) : $data));
-      }
-
-      $query = 'INSERT INTO ' . $this->from . ' (' . $column . ') VALUES (' . $val . ')';
-      $query = $this->query($query);
-
-      if ($query){
-        if(! $this->pdo){
-          $this->connect();
-        }
-        $this->insertId = $this->pdo->lastInsertId();
-        return $this->insertId();
-      }
-      else{
+		return $query;
+	  }
+	  else{
+		return $this->query($query, true, (($returnSQLQueryOrResultType == 'array') ? true : false) );
+	  }
+	}
+
+	/**
+	 * Insert new record in the database
+	 * @param  array   $data   the record data if is empty will use the $this->data array.
+	 * @param  boolean $escape  whether to escape or not the values
+	 * @return mixed          the insert id of the new record or null
+	 */
+	public function insert($data = array(), $escape = true){
+	  $column = array();
+	  $val = array();
+	  if(! $data && $this->getData()){
+		$columns = array_keys($this->getData());
+		$column = implode(',', $columns);
+		$val = implode(', ', $this->getData());
+	  }
+	  else{
+		$columns = array_keys($data);
+		$column = implode(',', $columns);
+		$val = implode(', ', ($escape ? array_map(array($this, 'escape'), $data) : $data));
+	  }
+
+	  $query = 'INSERT INTO ' . $this->from . ' (' . $column . ') VALUES (' . $val . ')';
+	  $query = $this->query($query);
+
+	  if ($query){
+		if(! $this->pdo){
+		  $this->connect();
+		}
+		$this->insertId = $this->pdo->lastInsertId();
+		return $this->insertId();
+	  }
+	  else{
 		  return false;
-      }
-    }
-
-    /**
-     * Update record in the database
-     * @param  array   $data   the record data if is empty will use the $this->data array.
-     * @param  boolean $escape  whether to escape or not the values
-     * @return mixed          the update status
-     */
-    public function update($data = array(), $escape = true){
-      $query = 'UPDATE ' . $this->from . ' SET ';
-      $values = array();
-      if(! $data && $this->getData()){
-        foreach ($this->getData() as $column => $val){
-          $values[] = $column . ' = ' . $val;
-        }
-      }
-      else{
-        foreach ($data as $column => $val){
-          $values[] = $column . '=' . ($escape ? $this->escape($val) : $val);
-        }
-      }
-      $query .= (is_array($data) ? implode(', ', $values) : $data);
-      if (! is_null($this->where)){
-        $query .= ' WHERE ' . $this->where;
-      }
-
-      if (! is_null($this->orderBy)){
-        $query .= ' ORDER BY ' . $this->orderBy;
-      }
-
-      if (! is_null($this->limit)){
-        $query .= ' LIMIT ' . $this->limit;
-      }
-      return $this->query($query);
-    }
-
-    /**
-     * Delete the record in database
-     * @return mixed the delete status
-     */
-    public function delete(){
-    	$query = 'DELETE FROM ' . $this->from;
-
-    	if (! is_null($this->where)){
-    		$query .= ' WHERE ' . $this->where;
-      	}
-
-    	if (! is_null($this->orderBy)){
-    	  $query .= ' ORDER BY ' . $this->orderBy;
-      	}
-
-    	if (! is_null($this->limit)){
-    		$query .= ' LIMIT ' . $this->limit;
-      	}
-
-    	if($query == 'DELETE FROM ' . $this->from){
-    		$query = 'TRUNCATE TABLE ' . $this->from;
-      	}
-    	return $this->query($query);
-    }
-
-    /**
-     * Execute an SQL query
-     * @param  string  $query the query SQL string
-     * @param  boolean $all   whether to return all record or not
-     * @param  boolean $array return the result as array
-     * @return mixed         the query result
-     */
-    public function query($query, $all = true, $array = false){
-      $this->reset();
-      if(is_array($all)){
-        $x = explode('?', $query);
-        $q = '';
-        foreach($x as $k => $v){
-          if(! empty($v)){
-            $q .= $v . (isset($all[$k]) ? $this->escape($all[$k]) : '');
-          }
-        }
-        $query = $q;
-      }
-
-      $this->query = preg_replace('/\s\s+|\t\t+/', ' ', trim($query));
-      $sqlSELECTQuery = stristr($this->query, 'SELECT');
-      $this->logger->info('Execute SQL query ['.$this->query.'], return type: ' . ($array?'ARRAY':'OBJECT') .', return as list: ' . ($all ? 'YES':'NO'));
-      //cache expire time
+	  }
+	}
+
+	/**
+	 * Update record in the database
+	 * @param  array   $data   the record data if is empty will use the $this->data array.
+	 * @param  boolean $escape  whether to escape or not the values
+	 * @return mixed          the update status
+	 */
+	public function update($data = array(), $escape = true){
+	  $query = 'UPDATE ' . $this->from . ' SET ';
+	  $values = array();
+	  if(! $data && $this->getData()){
+		foreach ($this->getData() as $column => $val){
+		  $values[] = $column . ' = ' . $val;
+		}
+	  }
+	  else{
+		foreach ($data as $column => $val){
+		  $values[] = $column . '=' . ($escape ? $this->escape($val) : $val);
+		}
+	  }
+	  $query .= (is_array($data) ? implode(', ', $values) : $data);
+	  if (! is_null($this->where)){
+		$query .= ' WHERE ' . $this->where;
+	  }
+
+	  if (! is_null($this->orderBy)){
+		$query .= ' ORDER BY ' . $this->orderBy;
+	  }
+
+	  if (! is_null($this->limit)){
+		$query .= ' LIMIT ' . $this->limit;
+	  }
+	  return $this->query($query);
+	}
+
+	/**
+	 * Delete the record in database
+	 * @return mixed the delete status
+	 */
+	public function delete(){
+		$query = 'DELETE FROM ' . $this->from;
+
+		if (! is_null($this->where)){
+			$query .= ' WHERE ' . $this->where;
+	  	}
+
+		if (! is_null($this->orderBy)){
+		  $query .= ' ORDER BY ' . $this->orderBy;
+	  	}
+
+		if (! is_null($this->limit)){
+			$query .= ' LIMIT ' . $this->limit;
+	  	}
+
+		if($query == 'DELETE FROM ' . $this->from){
+			$query = 'TRUNCATE TABLE ' . $this->from;
+	  	}
+		return $this->query($query);
+	}
+
+	/**
+	 * Execute an SQL query
+	 * @param  string  $query the query SQL string
+	 * @param  boolean $all   whether to return all record or not
+	 * @param  boolean $array return the result as array
+	 * @return mixed         the query result
+	 */
+	public function query($query, $all = true, $array = false){
+	  $this->reset();
+	  if(is_array($all)){
+		$x = explode('?', $query);
+		$q = '';
+		foreach($x as $k => $v){
+		  if(! empty($v)){
+			$q .= $v . (isset($all[$k]) ? $this->escape($all[$k]) : '');
+		  }
+		}
+		$query = $q;
+	  }
+
+	  $this->query = preg_replace('/\s\s+|\t\t+/', ' ', trim($query));
+	  $sqlSELECTQuery = stristr($this->query, 'SELECT');
+	  $this->logger->info('Execute SQL query ['.$this->query.'], return type: ' . ($array?'ARRAY':'OBJECT') .', return as list: ' . ($all ? 'YES':'NO'));
+	  //cache expire time
   	  $cacheExpire = $this->temporaryCacheTtl;
   	  
   	  //return to the initial cache time
   	  $this->temporaryCacheTtl = $this->cacheTtl;
   	  
   	  //config for cache
-        $cacheEnable = get_config('cache_enable');
+		$cacheEnable = get_config('cache_enable');
   	  
   	  //the database cache content
-        $cacheContent = null;
+		$cacheContent = null;
   	  
   	  //this database query cache key
-        $cacheKey = null;
+		$cacheKey = null;
   	  
   	  //the cache manager instance
-      $cacheInstance = null;
+	  $cacheInstance = null;
   	  
   	  //if can use cache feature for this query
   	  $dbCacheStatus = $cacheEnable && $cacheExpire > 0;
 	  
-      if ($dbCacheStatus && $sqlSELECTQuery){
-        $this->logger->info('The cache is enabled for this query, try to get result from cache'); 
-        $cacheKey = md5($query . $all . $array);
-        if(is_object($this->cacheInstance)){
-          $cacheInstance = $this->cacheInstance;
-        }
-        else{
-          $obj = & get_instance();
-          $cacheInstance = $obj->cache;  
-        }
-        $cacheContent = $cacheInstance->get($cacheKey);        
-      }
-      else{
+	  if ($dbCacheStatus && $sqlSELECTQuery){
+		$this->logger->info('The cache is enabled for this query, try to get result from cache'); 
+		$cacheKey = md5($query . $all . $array);
+		if(is_object($this->cacheInstance)){
+		  $cacheInstance = $this->cacheInstance;
+		}
+		else{
+		  $obj = & get_instance();
+		  $cacheInstance = $obj->cache;  
+		}
+		$cacheContent = $cacheInstance->get($cacheKey);        
+	  }
+	  else{
 		  $this->logger->info('The cache is not enabled for this query or is not the SELECT query, get the result directly from real database');
-      }
+	  }
 
-      if(! $this->pdo){
-        $this->connect();
-      }
+	  if(! $this->pdo){
+		$this->connect();
+	  }
       
-      if (! $cacheContent && $sqlSELECTQuery){
-		    //for database query execution time
-        $benchmarkMarkerKey = md5($query . $all . $array);
-        $bench = null;
-        if(is_object($this->benchmarkInstance)){
-          $bench = $this->benchmarkInstance;
-        }
-        else{
-          $obj = & get_instance();
-          $bench = $obj->benchmark;  
-        }
-        $bench->mark('DATABASE_QUERY_START(' . $benchmarkMarkerKey . ')');
-        //Now execute the query
-		    $sqlQuery = $this->pdo->query($this->query);
+	  if (! $cacheContent && $sqlSELECTQuery){
+			//for database query execution time
+		$benchmarkMarkerKey = md5($query . $all . $array);
+		$bench = null;
+		if(is_object($this->benchmarkInstance)){
+		  $bench = $this->benchmarkInstance;
+		}
+		else{
+		  $obj = & get_instance();
+		  $bench = $obj->benchmark;  
+		}
+		$bench->mark('DATABASE_QUERY_START(' . $benchmarkMarkerKey . ')');
+		//Now execute the query
+			$sqlQuery = $this->pdo->query($this->query);
         
-    		//get response time for this query
-        $responseTime = $bench->elapsedTime('DATABASE_QUERY_START(' . $benchmarkMarkerKey . ')', 'DATABASE_QUERY_END(' . $benchmarkMarkerKey . ')');
-	     	//TODO use the configuration value for the high response time currently is 1 second
-        if($responseTime >= 1 ){
-            $this->logger->warning('High response time while processing database query [' .$query. ']. The response time is [' .$responseTime. '] sec.');
-        }
-        if ($sqlQuery){
-          $this->numRows = $sqlQuery->rowCount();
-          if (($this->numRows > 0)){
-		    	//if need return all result like list of record
-            if ($all){
-    				$this->result = ($array == false) ? $sqlQuery->fetchAll(PDO::FETCH_OBJ) : $sqlQuery->fetchAll(PDO::FETCH_ASSOC);
-    		    }
-            else{
-				        $this->result = ($array == false) ? $sqlQuery->fetch(PDO::FETCH_OBJ) : $sqlQuery->fetch(PDO::FETCH_ASSOC);
-            }
-          }
-          if ($dbCacheStatus && $sqlSELECTQuery){
-            $this->logger->info('Save the result for query [' .$this->query. '] into cache for future use');
-            $cacheInstance->set($cacheKey, $this->result, $cacheExpire);
-          }
-        }
-        else{
-          $error = $this->pdo->errorInfo();
-          $this->error = $error[2];
-          $this->logger->fatal('The database query execution got error: ' . stringfy_vars($error));
-          $this->error();
-        }
-      }
-      else if ((! $cacheContent && !$sqlSELECTQuery) || ($cacheContent && !$sqlSELECTQuery)){
-    		$queryStr = $this->pdo->query($this->query);
-    		if($queryStr){
-    			$this->result = $queryStr->rowCount() >= 0; //to test the result for the query like UPDATE, INSERT, DELETE
-    			$this->numRows = $queryStr->rowCount();
-    		}
-        if (! $this->result){
-          $error = $this->pdo->errorInfo();
-          $this->error = $error[2];
-          $this->logger->fatal('The database query execution got error: ' . stringfy_vars($error));
-          $this->error();
-        }
-      }
-      else{
-        $this->logger->info('The result for query [' .$this->query. '] already cached use it');
-        $this->result = $cacheContent;
-	     	$this->numRows = count($this->result);
-      }
-      $this->queryCount++;
-      if(! $this->result){
-        $this->logger->info('No result where found for the query [' . $query . ']');
-      }
-      return $this->result;
-    }
-
-    /**
-     * Set database cache time to live
-     * @param integer $ttl the cache time to live in second
-     * @return object        the current Database instance
-     */
-    public function setCache($ttl = 0){
-      if($ttl > 0){
-        $this->cacheTtl = $ttl;
-		    $this->temporaryCacheTtl = $ttl;
-      }
-      return $this;
-    }
+			//get response time for this query
+		$responseTime = $bench->elapsedTime('DATABASE_QUERY_START(' . $benchmarkMarkerKey . ')', 'DATABASE_QUERY_END(' . $benchmarkMarkerKey . ')');
+		 	//TODO use the configuration value for the high response time currently is 1 second
+		if($responseTime >= 1 ){
+			$this->logger->warning('High response time while processing database query [' .$query. ']. The response time is [' .$responseTime. '] sec.');
+		}
+		if ($sqlQuery){
+		  $this->numRows = $sqlQuery->rowCount();
+		  if (($this->numRows > 0)){
+				//if need return all result like list of record
+			if ($all){
+					$this->result = ($array == false) ? $sqlQuery->fetchAll(PDO::FETCH_OBJ) : $sqlQuery->fetchAll(PDO::FETCH_ASSOC);
+				}
+			else{
+						$this->result = ($array == false) ? $sqlQuery->fetch(PDO::FETCH_OBJ) : $sqlQuery->fetch(PDO::FETCH_ASSOC);
+			}
+		  }
+		  if ($dbCacheStatus && $sqlSELECTQuery){
+			$this->logger->info('Save the result for query [' .$this->query. '] into cache for future use');
+			$cacheInstance->set($cacheKey, $this->result, $cacheExpire);
+		  }
+		}
+		else{
+		  $error = $this->pdo->errorInfo();
+		  $this->error = $error[2];
+		  $this->logger->fatal('The database query execution got error: ' . stringfy_vars($error));
+		  $this->error();
+		}
+	  }
+	  else if ((! $cacheContent && !$sqlSELECTQuery) || ($cacheContent && !$sqlSELECTQuery)){
+			$queryStr = $this->pdo->query($this->query);
+			if($queryStr){
+				$this->result = $queryStr->rowCount() >= 0; //to test the result for the query like UPDATE, INSERT, DELETE
+				$this->numRows = $queryStr->rowCount();
+			}
+		if (! $this->result){
+		  $error = $this->pdo->errorInfo();
+		  $this->error = $error[2];
+		  $this->logger->fatal('The database query execution got error: ' . stringfy_vars($error));
+		  $this->error();
+		}
+	  }
+	  else{
+		$this->logger->info('The result for query [' .$this->query. '] already cached use it');
+		$this->result = $cacheContent;
+		 	$this->numRows = count($this->result);
+	  }
+	  $this->queryCount++;
+	  if(! $this->result){
+		$this->logger->info('No result where found for the query [' . $query . ']');
+	  }
+	  return $this->result;
+	}
+
+	/**
+	 * Set database cache time to live
+	 * @param integer $ttl the cache time to live in second
+	 * @return object        the current Database instance
+	 */
+	public function setCache($ttl = 0){
+	  if($ttl > 0){
+		$this->cacheTtl = $ttl;
+			$this->temporaryCacheTtl = $ttl;
+	  }
+	  return $this;
+	}
 	
 	/**
 	 * Enabled cache temporary for the current query not globally	
@@ -1230,186 +1230,186 @@ 
 	 * @return object        the current Database instance
 	 */
 	public function cached($ttl = 0){
-      if($ttl > 0){
-        $this->temporaryCacheTtl = $ttl;
-      }
+	  if($ttl > 0){
+		$this->temporaryCacheTtl = $ttl;
+	  }
+	  return $this;
+	}
+
+	/**
+	 * Escape the data before execute query useful for security.
+	 * @param  mixed $data the data to be escaped
+	 * @return mixed       the data after escaped
+	 */
+	public function escape($data){
+	  if(is_null($data)){
+		return null;
+	  }
+	  if(! $this->pdo){
+		$this->connect();
+	  }
+	  return $this->pdo->quote(trim($data));
+	}
+
+	/**
+	 * Return the number query executed count for the current request
+	 * @return int
+	 */
+	public function queryCount(){
+	  return $this->queryCount;
+	}
+
+	/**
+	 * Return the current query SQL string
+	 * @return string
+	 */
+	public function getQuery(){
+	  return $this->query;
+	}
+
+	/**
+	 * Return the application database name
+	 * @return string
+	 */
+	public function getDatabaseName(){
+	  return $this->databaseName;
+	}
+
+	 /**
+	  * Return the database configuration
+	  * @return array
+	  */
+	public  function getDatabaseConfiguration(){
+	  return $this->config;
+	}
+
+	/**
+	 * set the database configuration
+	 * @param array $config the configuration
+	 */
+	public function setDatabaseConfiguration(array $config){
+	  $this->config = array_merge($this->config, $config);
+	  $this->prefix = $this->config['prefix'];
+	  $this->databaseName = $this->config['database'];
+	  $this->logger->info('The database configuration are listed below: ' . stringfy_vars(array_merge($this->config, array('password' => string_hidden($this->config['password'])))));
+	  return $this;
+	}
+
+	/**
+	 * Return the PDO instance
+	 * @return PDO
+	 */
+	public function getPdo(){
+	  return $this->pdo;
+	}
+
+	/**
+	 * Set the PDO instance
+	 * @param PDO $pdo the pdo object
+	 */
+	public function setPdo(PDO $pdo){
+	  $this->pdo = $pdo;
+	  return $this;
+	}
+
+
+	/**
+	 * Return the Log instance
+	 * @return Log
+	 */
+	public function getLogger(){
+	  return $this->logger;
+	}
+
+	/**
+	 * Set the log instance
+	 * @param Log $logger the log object
+	 */
+	public function setLogger($logger){
+	  $this->logger = $logger;
+	  return $this;
+	}
+
+	 /**
+	  * Return the cache instance
+	  * @return CacheInterface
+	  */
+	public function getCacheInstance(){
+	  return $this->cacheInstance;
+	}
+
+	/**
+	 * Set the cache instance
+	 * @param CacheInterface $cache the cache object
+	 */
+	public function setCacheInstance($cache){
+	  $this->cacheInstance = $cache;
+	  return $this;
+	}
+
+	/**
+	 * Return the benchmark instance
+	 * @return Benchmark
+	 */
+	public function getBenchmark(){
+	  return $this->benchmarkInstance;
+	}
+
+	/**
+	 * Set the benchmark instance
+	 * @param Benchmark $cache the cache object
+	 */
+	public function setBenchmark($benchmark){
+	  $this->benchmarkInstance = $benchmark;
+	  return $this;
+	}
+
+	/**
+	 * Return the data to be used for insert, update, etc.
+	 * @return array
+	 */
+	public function getData(){
+	  return $this->data;
+	}
+
+	/**
+	 * Set the data to be used for insert, update, etc.
+	 * @param string $key the data key identified
+	 * @param mixed $value the data value
+	 * @param boolean $escape whether to escape or not the $value
+	 * @return object        the current Database instance
+	 */
+	public function setData($key, $value, $escape = true){
+	  $this->data[$key] = $escape ? $this->escape($value) : $value;
 	  return $this;
-    }
-
-    /**
-     * Escape the data before execute query useful for security.
-     * @param  mixed $data the data to be escaped
-     * @return mixed       the data after escaped
-     */
-    public function escape($data){
-      if(is_null($data)){
-        return null;
-      }
-      if(! $this->pdo){
-        $this->connect();
-      }
-      return $this->pdo->quote(trim($data));
-    }
-
-    /**
-     * Return the number query executed count for the current request
-     * @return int
-     */
-    public function queryCount(){
-      return $this->queryCount;
-    }
-
-    /**
-     * Return the current query SQL string
-     * @return string
-     */
-    public function getQuery(){
-      return $this->query;
-    }
-
-    /**
-     * Return the application database name
-     * @return string
-     */
-    public function getDatabaseName(){
-      return $this->databaseName;
-    }
-
-     /**
-     * Return the database configuration
-     * @return array
-     */
-    public  function getDatabaseConfiguration(){
-      return $this->config;
-    }
-
-    /**
-     * set the database configuration
-     * @param array $config the configuration
-     */
-    public function setDatabaseConfiguration(array $config){
-      $this->config = array_merge($this->config, $config);
-      $this->prefix = $this->config['prefix'];
-      $this->databaseName = $this->config['database'];
-      $this->logger->info('The database configuration are listed below: ' . stringfy_vars(array_merge($this->config, array('password' => string_hidden($this->config['password'])))));
-      return $this;
-    }
-
-    /**
-     * Return the PDO instance
-     * @return PDO
-     */
-    public function getPdo(){
-      return $this->pdo;
-    }
-
-    /**
-     * Set the PDO instance
-     * @param PDO $pdo the pdo object
-     */
-    public function setPdo(PDO $pdo){
-      $this->pdo = $pdo;
-      return $this;
-    }
-
-
-    /**
-     * Return the Log instance
-     * @return Log
-     */
-    public function getLogger(){
-      return $this->logger;
-    }
-
-    /**
-     * Set the log instance
-     * @param Log $logger the log object
-     */
-    public function setLogger($logger){
-      $this->logger = $logger;
-      return $this;
-    }
-
-     /**
-     * Return the cache instance
-     * @return CacheInterface
-     */
-    public function getCacheInstance(){
-      return $this->cacheInstance;
-    }
-
-    /**
-     * Set the cache instance
-     * @param CacheInterface $cache the cache object
-     */
-    public function setCacheInstance($cache){
-      $this->cacheInstance = $cache;
-      return $this;
-    }
-
-    /**
-     * Return the benchmark instance
-     * @return Benchmark
-     */
-    public function getBenchmark(){
-      return $this->benchmarkInstance;
-    }
-
-    /**
-     * Set the benchmark instance
-     * @param Benchmark $cache the cache object
-     */
-    public function setBenchmark($benchmark){
-      $this->benchmarkInstance = $benchmark;
-      return $this;
-    }
-
-    /**
-     * Return the data to be used for insert, update, etc.
-     * @return array
-     */
-    public function getData(){
-      return $this->data;
-    }
-
-    /**
-     * Set the data to be used for insert, update, etc.
-     * @param string $key the data key identified
-     * @param mixed $value the data value
-     * @param boolean $escape whether to escape or not the $value
-     * @return object        the current Database instance
-     */
-    public function setData($key, $value, $escape = true){
-      $this->data[$key] = $escape ? $this->escape($value) : $value;
-      return $this;
-    }
+	}
 
 
   /**
    * Reset the database class attributs to the initail values before each query.
    */
   private function reset(){
-    $this->select   = '*';
-    $this->from     = null;
-    $this->where    = null;
-    $this->limit    = null;
-    $this->orderBy  = null;
-    $this->groupBy  = null;
-    $this->having   = null;
-    $this->join     = null;
-    $this->numRows  = 0;
-    $this->insertId = null;
-    $this->query    = null;
-    $this->error    = null;
-    $this->result   = array();
-    $this->data     = array();
+	$this->select   = '*';
+	$this->from     = null;
+	$this->where    = null;
+	$this->limit    = null;
+	$this->orderBy  = null;
+	$this->groupBy  = null;
+	$this->having   = null;
+	$this->join     = null;
+	$this->numRows  = 0;
+	$this->insertId = null;
+	$this->query    = null;
+	$this->error    = null;
+	$this->result   = array();
+	$this->data     = array();
   }
 
   /**
    * The class destructor
    */
   function __destruct(){
-    $this->pdo = null;
+	$this->pdo = null;
   }
 
 }