From 99929c461e8e05c941a9b2ca6ebc9c5fea8f98e0 Mon Sep 17 00:00:00 2001
From: richard <richard@57a73879-2fb5-44c3-a270-3262357dd7e2>
Date: Sun, 15 Sep 2002 23:06:20 +0000
Subject: [PATCH] nicer error message for invalid class lookup

git-svn-id: http://svn.roundup-tracker.org/svnroot/roundup/trunk@1169 57a73879-2fb5-44c3-a270-3262357dd7e2
---
 roundup/backends/back_anydbm.py  | 7 +++++--
 roundup/backends/back_gadfly.py  | 7 +++++--
 roundup/backends/back_metakit.py | 5 ++++-
 3 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/roundup/backends/back_anydbm.py b/roundup/backends/back_anydbm.py
index f36213d..91f8a76 100644
--- a/roundup/backends/back_anydbm.py
+++ b/roundup/backends/back_anydbm.py
@@ -15,7 +15,7 @@
 # BASIS, AND THERE IS NO OBLIGATION WHATSOEVER TO PROVIDE MAINTENANCE,
 # SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
 # 
-#$Id: back_anydbm.py,v 1.78 2002-09-13 08:20:07 richard Exp $
+#$Id: back_anydbm.py,v 1.79 2002-09-15 23:06:20 richard Exp $
 '''
 This module defines a backend that saves the hyperdatabase in a database
 chosen by anydbm. It is guaranteed to always be available in python
@@ -121,7 +121,10 @@ class Database(FileStorage, hyperdb.Database, roundupdb.Database):
         '''
         if __debug__:
             print >>hyperdb.DEBUG, 'getclass', (self, classname)
-        return self.classes[classname]
+        try:
+            return self.classes[classname]
+        except KeyError:
+            raise KeyError, 'There is no class called "%s"'%classname
 
     #
     # Class DBs
diff --git a/roundup/backends/back_gadfly.py b/roundup/backends/back_gadfly.py
index b6579bf..225f341 100644
--- a/roundup/backends/back_gadfly.py
+++ b/roundup/backends/back_gadfly.py
@@ -1,4 +1,4 @@
-# $Id: back_gadfly.py,v 1.19 2002-09-13 08:20:13 richard Exp $
+# $Id: back_gadfly.py,v 1.20 2002-09-15 23:06:20 richard Exp $
 __doc__ = '''
 About Gadfly
 ============
@@ -356,7 +356,10 @@ class Database(FileStorage, hyperdb.Database, roundupdb.Database):
         '''
         if __debug__:
             print >>hyperdb.DEBUG, 'getclass', (self, classname)
-        return self.classes[classname]
+        try:
+            return self.classes[classname]
+        except KeyError:
+            raise KeyError, 'There is no class called "%s"'%classname
 
     def clear(self):
         ''' Delete all database contents.
diff --git a/roundup/backends/back_metakit.py b/roundup/backends/back_metakit.py
index c7592a4..43a5223 100755
--- a/roundup/backends/back_metakit.py
+++ b/roundup/backends/back_metakit.py
@@ -57,7 +57,10 @@ class _Database(hyperdb.Database):
             return self.dirty
         return self.getclass(classname)
     def getclass(self, classname):
-        return self.classes[classname]
+        try:
+            return self.classes[classname]
+        except KeyError:
+            raise KeyError, 'There is no class called "%s"'%classname
     def getclasses(self):
         return self.classes.keys()
     # --- end of ping's spec 
-- 
2.30.2