Enabled caching

application/classes/ormtsm.php

@@ -17,12 +17,50 @@ class ORMTSM extends ORM {
 	protected $_disable_join_table_name = TRUE;
 	// Suppress ORMs use of limit
 	protected $_disable_limit = TRUE;
+	// To enable effective caching, this must disabled.
+	protected $_reload_on_wakeup = FALSE;
 
 	// Enable the formating of columns
-	protected $_object_formated  = array();
+	protected $_object_formated = array();
 	protected $_formated = FALSE;
 	protected $_formats = array();
 
+	public function __construct($id = NULL) {
+		parent::__construct($id);
+
+		// We'll cache our query results
+		if ($c = $this->_db->caching($this->_table_name))
+			$this->cached($c);
+	}
+
+	/**
+	 * Proxy method to Database list_columns.
+	 * This enables caching of the list_columns queries. Since this doesnt
+	 * we hard code the cache to 7 days.
+	 *
+	 * @return array
+	 */
+	public function list_columns() { 
+		// We'll cache our query results
+		if ($this->_db->caching('SCHEMA')) {
+			// Set the cache key based on the database instance name and SQL
+			$cache_key = 'Database::query(LC:'.$this->_table_name.')';
+ 
+			if ($result = Cache::instance()->get($cache_key))
+				// Return a cached result
+				return $result;
+		}
+
+		// Proxy to database
+		$result = $this->_db->list_columns($this->_table_name);
+
+		// Cache the result array
+		if (isset($cache_key))
+			Cache::instance()->set($cache_key, $result, 604800);
+
+		return $result;
+	}
+
 	// Load our values into the ORM object
 	public function load_object(array $values) {
 		return parent::_load_values($values);