Moving exception classes around and making all the core exceptions ex…

…tend one class that overrides the code to 500. The code value will be used as the HTTP status code for the error page.

cake/libs/exceptions.php

@@ -18,52 +18,68 @@
  * @since         CakePHP(tm) v 2.0
  * @license       MIT License (http://www.opensource.org/licenses/mit-license.php)
  */
+/**
+ * CakeException is used a base class for CakePHP's internal exceptions.
+ * In general framework errors are interpreted as 500 code errors.
+ *
+ * @package cake.libs
+ */
+class CakeException extends RuntimeException { 
+	public function __construct($message, $code = 500, Exception $previous = null) {
+		parent::__construct($message, $code, $previous);
+	}
+}
+
 
-class Error404Exception extends RuntimeException { }
-class Error500Exception extends RuntimeException { }
+class Error404Exception extends RuntimeException {
+	public function __construct($message, $code = 404, Exception $previous = null) {
+		parent::__construct($message, $code, $previous);
+	}
+}
+class Error500Exception extends CakeException { }
 
 /*
  * Exceptions used by Dispatcher
  */
-class MissingControllerException extends RuntimeException { }
-class MissingActionException extends RuntimeException { }
-class PrivateActionException extends RuntimeException { }
+class MissingControllerException extends Error404Exception { }
+class MissingActionException extends Error404Exception { }
+class PrivateActionException extends Error404Exception { }
 
 /**
  * Exceptions used by the ComponentCollection.
  */
-class MissingComponentFileException extends RuntimeException { }
-class MissingComponentClassException extends RuntimeException { }
+class MissingComponentFileException extends CakeException { }
+class MissingComponentClassException extends CakeException { }
 
 /**
  * Runtime Exceptions for behaviors
  */
-class MissingBehaviorFileException extends RuntimeException { }
-class MissingBehaviorClassException extends RuntimeException { }
+class MissingBehaviorFileException extends CakeException { }
+class MissingBehaviorClassException extends CakeException { }
 
 /**
  * Runtime Exceptions for Views
  */
-class MissingViewException extends RuntimeException { }
-class MissingLayoutException extends RuntimeException { }
+class MissingViewException extends CakeException { }
+class MissingLayoutException extends CakeException { }
 
 /**
  * Runtime Exceptions for ConnectionManager
  */
-class MissingDatabaseException extends RuntimeException {}
-class MissingConnectionException extends RuntimeException {}
+class MissingDatabaseException extends CakeException {}
+class MissingConnectionException extends CakeException {}
 
 /**
  * Exceptions used by the TaskCollection.
  */
-class MissingTaskFileException extends RuntimeException { }
-class MissingTaskClassException extends RuntimeException { }
+class MissingTaskFileException extends CakeException { }
+class MissingTaskClassException extends CakeException { }
 
 /**
  * Exception class to be thrown when a database table is not found in the datasource
  *
  */
-class MissingTableException extends RuntimeException {
+class MissingTableException extends CakeException {
 /**
  * The name of the model wanting to load the database table
  *