[jdom-interest] create xml tree

Ed Maher ed.maher at euromainbt.co.uk
Mon Feb 2 06:36:00 PST 2004


----- Original Message ----- 
From: "Mikael Petterson (KI/EAB)" <mikael.petterson at ericsson.com>
To: "'Per Norrman'" <pernorrman at telia.com>; <jdom-interest at jdom.org>
Sent: Monday, February 02, 2004 1:59 PM
Subject: RE: [jdom-interest] create xml tree


> Hi,
>
> Sorry for not being very clear on what I want to do. I give it another
try.
>
> I import an xml file (1). I creat a JDOM tree and retrieve information
about parent-child relations since the xml I have does not express that for
my objects explicitly. Then I have to create an another xml file (2) that
describes the relationship between the objects. I have to create xml (2) to
look like this:
>
> <Model>
>  <RootObject>
>   <ObjectA>
>    <ObjectB/>
>    <ObjectC/>
>    <ObjectD>
>     <ObjectE/>
>    </ObjectD>
>   </ObjectA>
>  <RootObject>
> </Model>
>
> This describes that parent-child relation in xml. Which is fine. But when
I extract the relationship and try to build xml (2) I get a problem with
keeping the relations.
>
> I addContent() to rootObject. Like this:
>
> rootObject.addContent(ObjectA);
>
> Will the resulting Element be rootObject+ObjectA.

I expect it will be like this
<Root>
    <ObjectA>
    </ObjectA>
</Root>


> So how can I then add ObjectB?

ObjectA.addContent(ObjectB);

<Root>
    <ObjectA>
        <ObjectB>
        </ObjectB>
    </ObjectA>
</Root>

You'll either need to keep track of the parent object in a local variable,
or search for it again

Ed.

>
> Hope it is a little bit more clear :-) Maybe ....
>
> BR
>
> //Mikael
>
> -----Original Message-----
> From: Per Norrman [mailto:pernorrman at telia.com]
> Sent: den 2 februari 2004 13:57
> To: Mikael Petterson (KI/EAB); jdom-interest at jdom.org
> Subject: SV: [jdom-interest] create xml tree
>
>
> Sorry,
>
> this one was hard to understand ...
>
> >
> > I am trying to find out if there is a way of adding children
> > in a way that the parent-child relation will be kept.
>
> When you add one element (child) to another element (parent),
> you create a parent-child relationship. Which parent-child
> relationship do you want to be preserved?
>
> > I have a method to create the relation inbetween parent and
> > child. I then want to make a recursive add of
> > children to each parent. I have about 8 levels of
> > parent-child relations. Doing
> >
> > parent.addContent(child);
> >
> > seems only to add the first level. How can I make it recursive?
> >
>
> You cannot make it recursive! Where are the grand children, and the
> grand-grand children, etc?
>
> > Do I have to keep track of the element that I start to add
> > children to and when all my addContent have been done I add
> > the first element to the root and last create a Document?
> >
>
> Not knowing what your'e trying to do, but here are two hints:
>
> 1) if youre tree is static, one alternative is to use a bottom-up
> approach (although I do not really recommend the coding style):
>
>     Element e =
>        new Element("L1").addContent(
>          new Element("L2").addContent(
>             new Element("L3").addContent(
>                new Element("L4").addContent(
>                   new Element("L5").addContent(
>                      new Element("L6").addContent(
>                         new Element("L7").addContent(
>                            new Element("L8"))))))));
>
> (At least the tree structure is obvious :-))
>
> 2) if your tree is dynamic, you must have some representation of it
> before
> you go off and construct the JDOM tree. This representation must then be
> traversed
> and the JDOM tree built up along the way.
>
> /pmn
>
> This communication is confidential and intended solely for the
addressee(s). Any unauthorized review, use, disclosure or distribution is
prohibited. If you believe this message has been sent to you in error,
please notify the sender by replying to this transmission and delete the
message without disclosing it. Thank you.
>
> E-mail including attachments is susceptible to data corruption,
interruption, unauthorized amendment, tampering and viruses, and we only
send and receive e-mails on the basis that we are not liable for any such
corruption, interception, amendment, tampering or viruses or any
consequences thereof.
>
> _______________________________________________
> To control your jdom-interest membership:
>
http://lists.denveronline.net/mailman/options/jdom-interest/youraddr@yourhost.com




More information about the jdom-interest mailing list