Re: [wsbpel] Issue 103 - Good Idea!

["Yaron Y. Goland" <ygoland@bea.com>]

BTW, just so it doesn't get lost in all the excitement, let's not forget 
about the resolution to issue 13. We will still need to support the 
wsbp:query syntax.

Alex Yiu wrote:

> Hi all,
> 
> [After a morning of meeting, back online ... :-) ]
> 
> Yes, I agree with Ron.
> We may not want to overload expression, like $var/a/b/c, as the
> assignment target.
> I tend to believe that we still want to:
> (1) keep both expression and query in from-spec
> (2) keep query in to-spec
> (3) allow the usage of $var in expression
> 
> Danny ... if we pass issue 11 (assume we go for insertBefore and
> appendChild), the to-spec for  insertBefore and appendChild will be the
> same. The only change is: expression in from-spec now can use $var
> 
> E.g.:
> <appendChild>
>    <from expression="$fooVar/abc/def" />
>    <to variable="barVar" query="/ghi/jkl" />
> </appendChild>
> 
> the expression would be appended as as the last child under "/ghi/jkl".
> And, "/ghi/jkl" are existing nodes.
> 
> IMHO, XPath location path used in query or expression will always point
> to existing nodes, even after / if Issue 11 is passed.
> 
> 
> 
> Thanks!
> 
> 
> 
> Regards,
> Alex yiu
> 
> 
> 
> 
> Ron Ten-Hove wrote:
> 
>  > Danny van der Rijn wrote:
>  >
>  >> maybe i just don't know XPATH well enough, but if $var/a/b/c doesn't
>  >> exist,
>  >> can it be the target of an assign?
>  >>
>  >> 
>  >>
>  > XPath 1.0 expressions turn into node-sets, booleans, numbers, or
>  > strings (and do so without side effects). They don't turn into
>  > positional references. $var/a/b/c doesn't make sense as the target of
>  > an <assign> activity, from the XPath point of view.
>  >
>  > -Ron
>  >
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> 
> 
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