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RE: [xml-dev] Serialization of XDM - Use cases / Proposal

From: Michael Sokolov <sokolov@ifactory.com>
Date: Sat, 19 Sep 2009 08:01:15 -0400
Message-Id: <200909191125.n8JBPgFv006236@hades.falutin.net>
To: "'David A. Lee'" <dlee@calldei.com>, "'Jim Tivy'" <jimt@bluestream.com>
Cc: <xml-dev@lists.xml.org>, "'XProc Dev'" <xproc-dev@w3.org>
I have sometimes needed to be able to serialize a heterogeneous sequence of
items which may be either atomic values or nodes. I'm not sure, but this may
be what Jim is driving at. It is OK for my purpose if the values do not
carry intrinsic type information and are simply text in the serialization,
but what is important in this case is to distinguish between the items in
the sequence: they have to remain distinct even if they are adjacent text
items, say.

maybe this all just goes without saying, but somehow I couldn't resist
saying it anyhow

-Mike


  _____  

From: David A. Lee [mailto:dlee@calldei.com] 
Sent: Friday, September 18, 2009 9:21 PM
To: Jim Tivy
Cc: xml-dev@lists.xml.org; 'XProc Dev'
Subject: Re: [xml-dev] Serialization of XDM - Use cases / Proposal


This spec describes concatenation of node sequences such that they are
parseable as entities.

In the case you describe I think that fits well.
Atleast in my reading


5 XML Output Method

This describes serializing a sequence of nodes.  I think this spec would fit
for your use case.
Atleast that is my read, I admit I have a hard time following the reading of
this spec (not to blame the authors, I just have a hard time understanding
it all)



David A. Lee

dlee@calldei.com  

http://www.calldei.com

http://www.xmlsh.org

812-482-5224


Jim Tivy wrote: 

David



I do not see in this spec where it defines the serialization of a sequence.

I was not talking about concatenating "nodes" but rather concatenation of

text from a sequence after it was serialized.



Jim



-----Original Message-----

From: David A. Lee [mailto:dlee@calldei.com] 

Sent: Friday, September 18, 2009 4:46 PM

To: Jim Tivy

Cc: xml-dev@lists.xml.org; 'XProc Dev'

Subject: Re: [xml-dev] Serialization of XDM - Use cases / Proposal



This is a case, if I'm reading it properly, where the current XDM 

Serializaiton spec may serve perfectly.

http://www.w3.org/TR/xslt-xquery-serialization/



That would concatenate the result nodes such that it is serialized 

equivalently to an external entity.







David A. Lee

dlee@calldei.com  

http://www.calldei.com

http://www.xmlsh.org

812-482-5224







Jim Tivy wrote:

  

Here is a better description of the use case I have:



There are a number "templating" technologies in use for defining web

    

pages;

  

for example PHP, ASP and JSP.  These templating languages have been very

successful.  When these templates "execute", they produce an HTML page as

    

an

  

HTTP response.  These templating technologies allow you to mix html tags

with program logic to create web pages dynamically.  These templating

languages, as a rule, are text based in that they define a page by

concatenating HTML chunks of text together.  For example, in a JSP file,

sometimes these HTML chunks are literal text and other times they are

calculated and "injected inline" into the output - always as text.



It should be possible to inject an XDM text serialization (a sequence of

<div> tags and children, for instance) as returned by

getPipelineSerialization () call in this simple JSP page shown below: 



<html>

   <body>

      <% out.write(getPipelineSerialization("mypipeline")); %>

   </body>

</html>



examples of jsps:



http://java.sun.com/products/jsp/html/jspbasics.fm.html



-----Original Message-----

From: Jim Tivy [mailto:jimt@bluestream.com] 

Sent: Friday, September 18, 2009 3:12 PM

To: 'David A. Lee'

Cc: xml-dev@lists.xml.org; talk@x-query.com; 'XProc Dev'

Subject: RE: [xml-dev] Serialization of XDM - Use cases / Proposal



Hi David



We use XDM serialization - for a simple sequence.  We have a pipeline that

we execute and the last node is XPath /html/body/* of an upstream html

document - we call it html core output.  We use this in JSP (java server

pages) code where we wish to establish the css files and meta tags but

    

serve

  

up the html content from the pipeline.



If you like I can write this up in your wiki.



Jim



 



-----Original Message-----

From: David A. Lee [mailto:dlee@calldei.com] 

Sent: Friday, September 18, 2009 2:07 PM

Cc: xml-dev@lists.xml.org; talk@x-query.com; XProc Dev

Subject: Re: [xml-dev] Serialization of XDM - Use cases / Proposal



I have created a first pass at documenting the problem of XDM 

Serialization and created some use cases.

I would love any feedback or comments.  This is on a new wiki I created 

for this purpose.  If you would like to comment directly on the wiki 

please reply to me and I will give you the invite code (due to the sad 

state of affairs anonymous comments and editing are disabled due to 

wiki-spam-bots.  I've found spam within 5 minutes of opening a public 

wiki ... <sigh> )





http://xml.calldei.com/XDMSerialize



I have NOT included a proposal for a format yet, I'd like to discuss the 

intent and use cases first before putting up a straw-man proposal.



Thank you for any contribution !



I've CC'd this to xproc-dev because one of the use cases if for 

developers and integrators with XML Pipeline processors such as XProc





David A. Lee

dlee@calldei.com  

http://www.calldei.com

http://www.xmlsh.org

812-482-5224









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Received on Saturday, 19 September 2009 12:03:55 GMT

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