Webware for Python

Author: ianb
Date: 2004-04-17 21:59:35 -0600 (Sat, 17 Apr 2004)
New Revision: 84

Modified:
   Component/__init__.py
Log:
Added exception handling


Modified: Component/__init__.py
===================================================================
--- Component/__init__.py	2004-04-17 21:58:11 UTC (rev 83)
+++ Component/__init__.py	2004-04-18 03:59:35 UTC (rev 84)
@@ -83,6 +83,24 @@
         self.callEvent('sleep', trans)
         Page.sleep(self, trans)
 
+    def runTransaction(self, trans):
+        try:
+            try:
+                self.awake(trans)
+                self.respond(trans)
+            except Exception, e:
+                if self.handleException(e) == 'break':
+                    return
+                for component in self._instanceComponents:
+                    if component.handleExceptionEvent(e) == 'break':
+                        return
+                raise
+        finally:
+            self.sleep(trans)
+
+    def handleException(self, exc):
+        pass
+        
     components = []
 
 class Component:
@@ -156,8 +174,9 @@
 
                 def exceptionHTTPNotFoundEvent(self, exc):
                     self.servlet().write('...')
-		    # False means the exception is 'handled':
-                    return False
+		    # returning 'break' means the exception has been
+                    # handled and needn't be propagated up:
+                    return 'break'
 
         Actual exceptions are simply fired as 'exception' events,
         i.e., calling exceptionEvent.  By using _handleExceptions