Object Class

<?php
abstract class Object
{
	/**
	 * The table to read from
	 *
	 * @var String
	 */
	protected $tablename;
	
	/**
	 * The default values of the row
	 *
	 * @var Array<Varchar>
	 */
	protected $values;
	
	/**
	 * Constructor. Can take an associative array or integer id value
	 *
	 * @param Integer/Array $id
	 * @return Object
	 */
	public function Object($id)
	{
		Debug::out(0, "Constructor for Object($id)");
		
		if (is_integer($id))
			return $this->load(Database::selectItem($this->tablename, $id));
		
		if (is_array($id))
			$this->load($id);
		
		$array = Database::select($this->tablename, $id);

		return $this->load($array[0]);
	}
	
	/**
	 * Returns number of rows
	 * 
	 * @return Integer
	 */
	public static function count($tablename, $where)
	{
		if (!$where) $where = '(1)';
		return Database::selectCount($tablename, $where);
	}
	
	/**
	 * Loads values into memory
	 *
	 * @param Array $array
	 */
	protected function load($array)
	{
		if (!$array) return;
		
		foreach ($array as $key => $value)
			$this->$key = $value;
			
		$this->values = $array;
	}
	
	/**
	 * Returns an array of objects
	 *
	 * @param String $object
	 * @param String $where
	 * 
	 * @return Array<Object>
	 */
	public static function get($object, $where)
	{
		$objects = array();
		$rows = Database::select(strtolower($object), $where);
		
		for ($i = 0; $i < sizeof($rows); $i++)
		{
			$objects[$i] = new $object($rows[$i]);
		}
		
		return $objects;
	}
	
	/**
	 * Returns whether the object is initialized
	 * 
	 * @return Boolean
	 */
	public function isInitialized()
	{
		return $this->id > 0;
	}
	
	/**
	 * Creates a new object and returns it.
	 * 
	 * @param Array<Varchar> $array
	 * 
	 * @return Object
	 */
	public static function create($tablename, $array)
	{		
		return new $tablename(Database::insert($tablename, $array));
	}
	
	/**
	 * Updates the recordset.
	 * 
	 * @return Boolean
	 */
	public function save()
	{
		foreach ($this->values as $key => $value) {
			if ($this->$key != $value)
				$params[$key] = $this->$key;
		}
		
		return Database::update($this->tablename, $this->id, $params);
	}
	
	/**
	 * Convert to a string (JSON-style)
	 * 
	 * @return String
	 */
	public function toString()
	{
		$json = new Json();
		foreach ($this->values as $key => $value) {
			$json->addParam($key, $value);	
		}	
		return $json->toString();
	}
	
	public function __toString()
	{
		return $this->toString();
	}
}
?>