RE: [Xmlstar-devel] Great!

[Daniel S. <sh...@ir...>]

Hehe!

I'm still too new to this tool to fully understand all the combinations.
However, is it normal that the --insert inserts not "inside" the XPath but
"outside" of it?

Ex. xml ed -i "/xml" -t elem -n "test" -v 5

this will add test before xml and not inside it. Then what should

xml ed -i "/" -t elem -n "test" -v 5

do?

Daniel Shane



-----Original Message-----
From: mgr...@co... [mailto:mgr...@co...]
Sent: Thursday, August 28, 2003 3:37 PM
To: xml...@li...
Cc: Daniel Shane
Subject: RE: [Xmlstar-devel] Great!


Honestly I do not see much differences between element and attribute in that
sense. (They are both nodes after all).

Scenario you described can be achieved by combining multiple
--insert, --append, --subnode which would look more natural and easier to
read
(I believe :))

--Mikhail
> That works ok for attributes, but what if you want to update an XML node?
In
> that case would it be favorable to have multiple right hand side actions
> before doing the affectation? In many cases the replacement is a
> construction of elements rather than simply another part of the tree.
>
> Daniel Shane
>
> -----Original Message-----
> From: xml...@li...
> [mailto:xml...@li...]On Behalf Of
> mgr...@co...
> Sent: Thursday, August 28, 2003 2:54 PM
> To: xml...@li...
> Cc: Daniel Shane
> Subject: RE: [Xmlstar-devel] Great!
>
>
> Here is what was my original thinking on using XPATH expressions in
r-values
> for edit.
>
> Right now to update attribute value you would do something like
>
> xml ed -u //@id -v 2
>
> //@id    - points to a node being updated
> 2        - specifies value (constant)
>
>
> Here is how I would envision incremental update
>
> xml ed -u //@id -x "@id+1"
>
> //@id    - points to a node/nodes being updated
>            and gives a context for xpath expressions
>
> @id+1    - specifies xpath expression within the context
>            defined in -u option. This expression evaluates
>            and its value is assigned to a node selected
>            in -u.
>
> Something like that...
>
> --Mikhail
>
>