DO NOT REPLY [Bug 5070] New: - startEntity needs parameter for actual URI

[bu...@apache.org]

DO NOT REPLY TO THIS EMAIL, BUT PLEASE POST YOUR BUG 
RELATED COMMENTS THROUGH THE WEB INTERFACE AVAILABLE AT
<http://nagoya.apache.org/bugzilla/show_bug.cgi?id=5070>.
ANY REPLY MADE TO THIS MESSAGE WILL NOT BE COLLECTED AND 
INSERTED IN THE BUG DATABASE.

http://nagoya.apache.org/bugzilla/show_bug.cgi?id=5070

startEntity needs parameter for actual URI

           Summary: startEntity needs parameter for actual URI
           Product: Xerces2-J
           Version: 2.0.0 [beta 2]
          Platform: Other
        OS/Version: Other
            Status: NEW
          Severity: Normal
          Priority: Other
         Component: XNI
        AssignedTo: xerces-j-dev@xml.apache.org
        ReportedBy: jjc@jclark.com


I believe org.apache.xerces.xni.XMLDocumentHandler.startEntity should
have an additional actualURI parameter giving the URI actually used to
retrieve the entity.  This is the URI that would be the base URI for
URI references occurring in the entity. It is different from the
baseSystemId parameter which gives the base URI of the entity
containing the declaration of the entity being started.  At the moment
I am working around this by expanding systemId relative to
baseSystemId and using that as the actualURI.  This is unsatisfactory
for a couple of reasons.  Firstly, the expansion process is
non-trivial (see XMLEntityManager.expandSystemId); Xerces has already
done it; it is silly to require applications to redo it.  Secondly, in
the presence of HTTP redirection or an entity resolver that uses
catalogs to resolve public IDs, the actualURI used may be different
from the result of the expansion.  This second reason is not
applicable if you take the view that the systemId/baseSystemId
parameters correspond to the URI used for retrieval not to the
declared systemId; but that seems at odds with the publicId parameter
(which presumably corresponds to the declaration).

There's a similar issue with XMLInputSource: when you supply an
InputStream you need to specify what should be used as the base URI
for that InputStream; this is not the same as the baseSystemId which
is the base URI of the entity containing the declaration of the
systemId.  There's also a similar issue with XMLLocator.

---------------------------------------------------------------------
To unsubscribe, e-mail: xerces-j-dev-unsubscribe@xml.apache.org
For additional commands, e-mail: xerces-j-dev-help@xml.apache.org