Re: [jibx-users] accessing the stack in a binding

[Dennis Sosnoski]

Looks like you're doing some very warped things with JiBX (and I mean 
that in a good way, I think)! You should be able to do this by using a 
get-method added to the B class. If the get-method has the signature 
name(Object obj) it will be passed the containing object. You can cast 
this to an A and get the C reference from there.

That's obviously not as convenient as having JiBX just do it for you 
directly, and it's possible the binding definition could be extended to 
represent this. It's a pretty uncommon requirement, though.

If you find this comment useful and try it out I'd appreciate it if you 
could also add it to the Wiki. For what it's worth I think I've made it 
a little easier to use, with some basic instructions on the form to add 
or edit a snip.

 - Dennis
Tilman Linden wrote:
hello again,
i wonder if there is a possibility to access the element stack inside of
a binding definition, just like you can do inside a Custom Marshaller
using getStackObject(...).
assume the following scenario:
class A {
 String a_name;
 B b;
 C c;
}
class B {
 String b_name;
}
class C {
 String c_name;
}
shall be marshalled to the following XML:
<A name="a_name">
 <B name="b_name">
   <C name="c_name"/>
 </B>
</A>
the following mapping should describe the problem:
<mapping name="A" class="A">
 <value style="attribute" field="a_name"/>
 <structure name="B" field="b">
   <value style="attribute" field="b_name"/>
   <structure name="C" field= ?HOW TO ACCESS A.c AT THIS POINT? >
     <value style="attribute" field="c_name"/>
   </structure>
 </structure>
</mapping>
maybe it is just bad design trying to map a flat object structure to a
nested XML structure, but i encountered this problem quite a few times. 
if i overlooked a simple solution for this, maybe someone can point me
at it. i would like to avoid custom marshallers because then the mapping
semantics are split across the binding and the marshaller.

regards,
Tilman
 


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