But what about an unknown child element ? In XML we can add new
children or new element : normally this should'nt impact any program
that use the part of its interest in such a XML message.
Is there a way to ignore *any* element that is not bound in the JIBX
binding file, even if we don't know them at the time binding is done ?
Thanks, JC
Guillaume Pothier a écrit :
It seems there is a simpler solution: see figure 9 on this page:
http://jibx.sourceforge.net/tutorial/binding-structures.html
On 9/12/05, Davies, Joshua <[EMAIL PROTECTED]> wrote:
The package "jibx-extras" includes a custom unmarshaller to handle this,
since it comes up quite a bit. Your binding should look something like
this:
<binding name="..." class="...">
<structure name="A" field="..." usage="optional">
<value style="element" name="childA" field="..." />
<value usage="optional" set-method="setIgnored"
get-method="getIgnored"
marshaller="org.jibx.extras.DiscardElementMapper"
unmarshaller="org.jibx.extras.DiscardElementMapper" />
</structure>
</binding>
And, of course, you'll have to uglify the target class a little bit by
adding two methods:
public void setIgnored( Object ignore )
{
}
public Object getIgnored( )
{
return null;
}
This assumes that "extra" elements will appear at the end of the
structure, which is fairly common - if you anticipate that new elements
may be added "at random" anywhere in the middle, add the
'ordered="false"' attribute to the binding for structure "A"; there's a
performance hit here, so it should be avoided, but if you have no
choice, it does work.
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]] On Behalf Of Andy Yang
Sent: Friday, September 09, 2005 9:52 AM
To: [email protected]
Subject: [jibx-users] Ignoring unmapped XML during unmarshalling
Hi all,
Just wondering whether there was a way to have JiBX ignore any elements
it came across during unmarshalling it didn't have a mapping for.
For example, if I use JiBX to write software that handles a message
like:
<A>
<childA>
</A>
and sometime later, the message gets extended:
<A>
<childA>
<xyz:newChild>
</A>
Would it be possible to configure JiBX to ignore the new child element?
Or is this generally considered bad practice?
Thanks,
Andy
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