Re: [wsbpel] Issue - 157 - Proposal For Vote

[Alex Yiu <alex.yiu@oracle.com>]

Hi all,

Actually, I sent out a private email to Assaf earlier on his suggestion. 
(Assaf has replied me back. But I am still "digesting" that email as of 
this moment.)

Here is a part of the email sent to Assaf:
=============================
I understand that roles of <xsl:value-of> and <xsl:copy-of> in XSLT. 
However, one key thing to remind you that is: XSLT is to generate a 
brand new document based on an original document. <xsl:value-of> and 
<xsl:copy-of> are used to define parts / fragments of the new document.

XSLT will be used with BPEL to generate a brand new document / element 
to replace the whole variable (if without existing XPath features with 
<assign>-and-<copy>).

On the other hand, BPEL's <copy> is used to replace just parts / 
fragments of an XML variable in BPEL. (NOT replace the whole variable).

I hope that clarifies the intention of <copy>.
Thanks!
=============================

I believe most of BPEL products already have some XSLT support today.
But, XSLT is used **within the from-spec** to generate a *new* document 
or element to replace an existing one pointed by to-spec.



Regards,
Alex Yiu


Satish Thatte wrote:

>In the spirit of drastic simplification of the whole xII mess, a naive question:  what is wrong with inventing an activity based on XSLT that is rather like a web service invoke (XML in, XML out) but is a local activity that is defined by a (possibly inlined) XSLT script rather than a web service?
> 
>We have said several times that copy is really not needed except for the fact that calling web services for simple data transformation is too heavyweight and expensive though theoretically workable.  XSLT seems to have all the benefits of minimality and simplicity in BPEL without the runtime expensiveness of real remote web services.
> 
>Am I missing something?
>
>________________________________
>
>From: Alex Yiu [mailto:alex.yiu@oracle.com]
>Sent: Thu 6/2/2005 9:06 AM
>To: wsbpeltc
>Cc: ygoland@bea.com; Alex Yiu
>Subject: Re: [wsbpel] Issue - 157 - Proposal For Vote
>
>
>
>
>Hi all,
>
>After dinner last nite, I had a late nite 157 conversation with Yaron.
>Here is the attempt to recap the content that we have discussed so far.
>(I added some extrapolation of my own. Hopefully, those are reasonable
>to Yaron)
>
>Thanks!
>
>
>
>Regards,
>Alex Yiu
>
>
>
>
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