OpenSAML user discussion

[JC Estienney <>]

OK Thank you for these explanations

Jean-Côme

Scott Cantor a écrit :

Chad might be able to comment further, but it's possible we might need
to look at changing that behavior, or at least provide some option for
not doing that, like an overloaded marshall(XMLObject target, boolean
newDocumentIfAlreadyMarshalled) or something similar. At the very least,
unnecessarily adopting into a new Document is somewhat expensive.
    

FWIW, my code doesn't give you the option, it just reuses the DOM tree if
it's cached, or uses a new document if none is supplied in the call. If I
needed it to do what you're describing, I'd just create my own document to
give it, or release the DOM first.

  

In any case, you probably realize that you don't really need to
re-marshall there, since you just unmarshalled the object, and so it
already has a DOM.  Although this perhaps highlights a similar issue
with the API - it nominally wasn't intended that people call getDOM() to
get the XMLObject's Element, but instead call marshall(XMLObject) - but
if marshall() always has potentially unwanted side-effects as it does,
then that's a problem too.  For now I suppose the only option is just
use getDOM(), if you need a sub-Element from an already marshalled (or
unmarshalled) tree.
    

In my case, I definitely count on the fact that XMLObject::marshall()
returns the existing DOM if I need it, because getDOM() would return NULL if
it didn't have one, pushing extra checks into my code.

-- Scott

  

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