Added an "abort" flag to RESPONSE.exception, so that the method can be

called without necessarily aborting the current transaction. This is
required by things like the resolve_url machinery, where there is a
need to call the exception() method to get a meaningful error. The
resolve_url method in HTTPRequest.Request has been changed to take
advantage of this. The existing semantics of RESPONSE.exception()
are unchanged - it will automatically abort just as it did before
unless you pass the keyword arg abort=0 when calling the method.

lib/python/ZPublisher/HTTPRequest.py

@@ -83,7 +83,7 @@
 # 
 ##############################################################################
 
-__version__='$Revision: 1.23 $'[11:-2]
+__version__='$Revision: 1.24 $'[11:-2]
 
 import regex, sys, os, string
 from string import lower, atoi, rfind, split, strip, join, upper, find
@@ -627,13 +627,22 @@ class HTTPRequest(BaseRequest):
         rsp=req.response
         req['PATH_INFO']=path
         object=None
+        
+        # Try to traverse to get an object. Note that we call
+        # the exception method on the response, but we don't
+        # want to actually abort the current transaction
+        # (which is usually the default when the exception
+        # method is called on the response).
         try: object=req.traverse(path)
-        except: rsp.exception(0)
-        if object is None: raise rsp.errmsg, sys.exc_value
-
-        # waaa - traversal may return a "default object"
-        # like an index_html document, though you really
-        # wanted to get a Folder back :(
+        except: rsp.exception(abort=0)
+        if object is None:
+            raise rsp.errmsg, sys.exc_value
+
+        # The traversal machinery may return a "default object"
+        # like an index_html document. This is not appropriate
+        # in the context of the resolve_url method so we need
+        # to ensure we are getting the actual object named by
+        # the given url, and not some kind of default object.
         if hasattr(object, 'id'):
             if callable(object.id):
                 name=object.id()

lib/python/ZPublisher/HTTPResponse.py

@@ -84,8 +84,8 @@
 ##############################################################################
 '''CGI Response Output formatter
 
-$Id: HTTPResponse.py,v 1.19 1999/08/18 00:23:50 amos Exp $'''
-__version__='$Revision: 1.19 $'[11:-2]
+$Id: HTTPResponse.py,v 1.20 1999/09/01 00:25:48 brian Exp $'''
+__version__='$Revision: 1.20 $'[11:-2]
 
 import string, types, sys, regex
 from string import find, rfind, lower, upper, strip, split, join, translate
@@ -557,6 +557,7 @@ class HTTPResponse(BaseResponse):
                       "$"
                       ).match,
                   tag_search=regex.compile('[a-zA-Z]>').search,
+                  abort=1
                   ):
         if type(info) is type(()) and len(info)==3: t,v,tb = info
         else: t,v,tb = sys.exc_info()
@@ -565,9 +566,10 @@ class HTTPResponse(BaseResponse):
 
         stb=tb
 
-        # Abort running transaction, if any:
-        try: get_transaction().abort()
-        except: pass
+        # Abort running transaction, if any
+        if abort:
+            try: get_transaction().abort()
+            except: pass
 
         try:
             # Try to capture exception info for bci calls