Added caching for RedBeanPHP Bean Export plugin

RedBean/Plugin/BeanExport.php

@@ -49,6 +49,25 @@ public function loadSchema() {
 		}
 		$this->tables = $tables;
 	}
+
+	/**
+	 *Returs a serialized representation of the schema
+	 *
+	 *@return string $serialized serialized representation 
+	 */
+	public function getSchema() {
+		return serialize($this->tables);
+	}
+
+	/**
+	 * Loads a schema from a string (containing serialized export of schema)
+	 * 
+	 * @param string $schema
+	 */
+	public function loadSchemaFromString($schema) {
+		$this->tables = unserialize($schema);
+	}
+
 
 	/**
 	 * Exports a collection of beans