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Subject: Re: MIME enveloping and Packaging work paper for Thursday con-call.
David, Assuming we go with the MIME packaging i.e. multiprt/related with Manifest forming the first part, could we accomplish referring to entities in the same message or outside of the message from the Manifest as follows?: A new attribute "ReferenceType" with values "local" and "external" is added to <DocumentReference> element of MessageManifest. Then if ReferenceType="local", we could use the "Content-ID" of the part and list that in a "ContentId" attribute. If it is an external resource, URI attribute is used as usual. However, this still does not address how one could reference a part in another message (MIME). What would a URN for such would look like? Prasad David Burdett wrote: > Dick > > I found the attached document interesting. However I'd like your views on > how you would refer to MIME parts from within a Manifest, for example in XML > Messaging I thought that the Message Manifest in the Message header might > look something like ... > > <MessageManifest> > <DocumentReference Id='AB273' DocumentType='Text/XML' > URI='urn:example.com:ACV-CN-1999/2456#MessageRoutingInfo' > Purpose='MessageRoutingInfo' > > <DocumentReference Id='AB274' DocumentType='Text/XML' > URI='urn:example.com:ACV-CN-1999/2456#Invoice' > Purpose='NewInvoice' > > <DocumentReference Id='AB275' DocumentType='Image/Jpg' > URI='urn:example.com:ACV-CN-1999/2456#InvoiceImage' > Purpose='InvoiceAttachment' > > </MessageManifest> > > The idea of using a URI is that you could refer to something that was: > 1. In the same Message by specifying a URN, or > 2. Somewhere on the web, by specifying a URL - if this was an ftp address > then it could be useful for "sending" large files. > > You could also then use the URI as the unique identifier of a document after > you had taken the message apart and put the various parts in a file or > database somewhere. > > Two questions: > 1. how would this work if you wanted to refer to something in the same or > another message > 2. You'll also notice that I've made the Manifest 'flat' rather than the > nested Mime-within-Mime that you had in your example. What do you think are > the pros and cons of this? > > I'd appreciate your thoughts on this. > > David > > -----Original Message----- > From: Dick Brooks [mailto:email@example.com] > Sent: Monday, March 06, 2000 12:06 PM > To: Ebxml > Cc: Dick Brooks > Subject: MIME enveloping and Packaging work paper for Thursday con-call. > > The attached file is the work paper Nick and I agreed to produce during the > last con-call. Please review and prepare to discuss during the con-call on > Thursday. > > Thanks, > > Dick Brooks > http://www.8760.com/
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