Jdom with XMI Files

[Fábio-4]

Hy everybody...
I'm trying to manipulate a XMI file with Jdom, and I have experienced some difficulties doing it.

For example:
All the subnodes of the root Element have the "same name", but have different attributes.
How can I choose a specific "Element", by specifying it's attributes?

Another point is that the attributes started with "xmi:" aren't recognized by Jdom. I've already tested a bunch of things to make it recognizable, but all of them were unsuccessful. =/

I think that my problems are quite easy to solve, but I haven't found anything that could help me in the web. 
If Jdom isn't a great tool with XMI, could you suggest me other?


*Xmi file that i want to read: http://www.omg.org/spec/UML/20061001/Superstructure.cmof


Cheers,
Fábio Leal


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[Michael Kay]

It's a good idea to show the code you were using, then people can tell you where you went wrong.

 

It looks a bit as if you haven't grasped how namespaces work, but without seeing your attempts, that's a guess.

 

Michael Kay

http://www.saxonica.com/

---

From: jdom-interest-bounces@... [mailto:jdom-interest-bounces@...] On Behalf Of Fabio Leal
Sent: 23 November 2008 03:10
To: jdom-interest@...
Subject: [jdom-interest] Jdom with XMI Files

Hy everybody...
I'm trying to manipulate a XMI file with Jdom, and I have experienced some difficulties doing it.

For example:
All the subnodes of the root Element have the "same name", but have different attributes.
How can I choose a specific "Element", by specifying it's attributes?

Another point is that the attributes started with "xmi:" aren't recognized by Jdom. I've already tested a bunch of things to make it recognizable, but all of them were unsuccessful. =/

I think that my problems are quite easy to solve, but I haven't found anything that could help me in the web. 
If Jdom isn't a great tool with XMI, could you suggest me other?


*Xmi file that i want to read: http://www.omg.org/spec/UML/20061001/Superstructure.cmof


Cheers,
Fábio Leal

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[Michael Kay]

>
> You were right. I am quite confuse when manipulating namespaces.
> Could you give me a help there?

Please don't go off-list. When people search the archives, they want to find
the answers, not only the questions!
>
> For example, how could I get to the Element:
>
>  <ownedMember xmi:type="cmof:Package" xmi:id="StateMachines"
> name="StateMachines">
>
> (this is a root's child) without using
> rootElement.getchildren() and iterating over it?

Use Element.getChild(name, namespace)
>
> How could I get its child attributes without using
> myElement.getAttributes() and iterating over it?

Use Element.getAttribute(name, namespace)

Michael Kay
http://www.saxonica.com/

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[polx]

Le 23-nov.-08 à 04:09, Fabio Leal a écrit :

I'm trying to manipulate a XMI file with Jdom, and I have experienced some difficulties doing it.
For example:
All the subnodes of the root Element have the "same name", but have different attributes.
How can I choose a specific "Element", by specifying it's attributes?

XPath only can do that, it's equivalent to serial search. Something such as:

xmiNS = Namespace.getNamespace("xmi","http://schema.omg.org/spec/XMI/2.1");

XPath x = new XPath("./*[@xmi:type='cmof:Comment'])

x.addNamsepace(xmiNS)

Another point is that the attributes started with "xmi:" aren't recognized by Jdom.

of course they are, they are attributes with namespace.

element.getAttribute("id",xmiNS);

I've already tested a bunch of things to make it recognizable, but all of them were unsuccessful. =/
I think that my problems are quite easy to solve, but I haven't found anything that could help me in the web. 
If Jdom isn't a great tool with XMI, could you suggest me other?

paul

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[Fábio-4]

Thanks for everybody, especially Paul Libbrecht and Will Martinez.
I'm going to mix XPath and JDom in my job. XPath is quite easy to
learn and helped me a lot here.
If somebody needs a help with XPath, mail-me and I can show the
tutorial that I used. :D

Cheers,
Fábio Leal

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