[jdom-interest] create xml tree

[Ed Maher]

----- 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
>
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