Re: [wsbpel] Issue - 179 - Type Compatibility in Assignment of EPRs

[Prasad Yendluri <pyendluri@webmethods.com>]

Hi Dieter,

If either from-spec or the to-spec is a partnerLink, it seems all one 
could do is either copy from a "role" or copy to a "role" in the 
partnerLink.

The spec claims one can only use this (partnerLink) form of from-spec or 
to-spec to manipulate endpoint references associated with the (roles in 
the) partnerLink.

I can see the from-spec being a literal or a variable defined to hold 
EPRs etc. and to-spec a variable defined to hold EPRs.  I guess it is 
not enough to say  that "an assignment to/from a partner link IS allowed 
when the from/to spec is a variable of a WSDL message type."  The 
variable could have been defined by other forms allowed (type and 
element) as well. However I believe it must have been defined to hold 
EPRs and any variable.

Finally I agree with Yaron that this can be subsumed by 51, though I 
would like to see this specific aspect captured in the description of 
issue 51.

Thanks.

Prasad

ws-bpel issues list editor wrote:
 > This issue has been added to the wsbpel issue list with a status of 
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 > The status will be changed to "open" if the TC accepts it as 
identifying a bug
 > in the spec or decides it should be accepted specially. Otherwise it 
will be
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 >
 >
 > Issue - 179 - Type Compatibility in Assignment of EPRs
 >
 > *Status:* received
 > *Date added:* 12 Nov 2004
 > *Categories:* Data handling <#category_data_handling>
 > *Date submitted:* 12 November 2004
 > *Submitter:* Dieter Koenig <mailto:dieterkoenig@de.ibm.com>
 > *Document:* Specification working draft, Section 9.3.1, "Type 
Compatibility in
 > Assignment".
 > *Description:* In Section 9.3.1, the second list bullet reads:
 >
 > The from-spec is a variable of a WSDL message type and the to-spec is 
not,
 > or vice versa. This is not legal because parts of variables, 
selections of
 > variable parts, or endpoint references cannot be assigned to/from 
variables
 > of WSDL message types directly.
 >
 > One could interpret this as if an assignment from a variable of a 
WSDL message
 > type to a partner link is not allowed because the partner link is not 
itself a
 > variable of a WSDL message type. Likewise for assignments in the 
reverse direction.
 > *Submitter's proposal:* Clarify that an assignment to/from a partner 
link IS
 > allowed when the from/to spec is a variable of a WSDL message type.
 >
 > The endpoint reference is in a message part of this WSDL message, 
either the
 > complete part or an element contained in the part.
 > *Changes:* 12 Nov 2004 - new issue
 >
 > 
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