Hi,
Yes, I've thought about creating classes for LEVEL-2 and LEVEL-3, but I was
curious if there is a better way.
Why I need these empty levels, well, "rebuilding" old XML based application
and that's its API :-(
Thanks a lot.
Pat
On Mon, 29 Jan 2007 15:02:02 +0100, Werner Guttmann wrote
> Hi,
>
> Creating XML such as ...
>
> <LEVEL-1>
> <LEVEL-2>
> <LEVEL-3/>
> </LEVEL-2>
> </LEVEL-1>
>
> Does not really make sense if the underlying XML artefact (the
> element <str>) will not be created as a result of marshalling. By
> default, if the instance value of the String property 'str' equals
> to 'null', Castor will not marshal the element at all (unless you
> make the element required and nillable, in which case it will
> marshall an empty element <str/> within the location given).
>
> I guess it is important to to acknowledge that the XPATH specified
> within a location attribute is a prefix only, and as such follows
> the default rules of marshalling instance members (incl. Dealing
> with nulls). In other words, if the instance member will not be
> marshalled, the prefix won't be marshalled either.
>
> Having said that, you do not have to use a location attribute, even
> though it is very convenient, as it allows you to work with
> shortcuts. As this mechanism does not work for your scenario, why
> not create classes for <LEVEL-2> and <LEVEL-3> and map them
> accordingly ?
>
> Regards
> Werner
>
> > -----Original Message-----
> > From: pat [mailto:[EMAIL PROTECTED]
> > Sent: Montag, 29. Jänner 2007 13:52
> > To: Castor Users
> > Subject: [castor-user] keeping mapping elements when they are
> > not present
> >
> > Hi all,
> >
> > I have question about Castor XML mapping.
> >
> > Introduction:
> > public class Clazz {
> > private String str;
> > public String getStr() {...}
> > public void setStr(String str) {...}
> > }
> >
> > Clazz mapping xml fragment:
> > <class name="Clazz">
> > <map-to xml="LEVEL-1"/>
> > <field name="str" type="java.lang.String">
> > <bind-xml name="str" node="element"
> > location="LEVEL-2/LEVEL-3"/> </field> </class>
> >
> > Problem:
> > When the str field isnot null, then the XML tree structure is
> > correct for me:
> > <LEVEL-1><LEVEL-2><LEVEL-3><str>...</str></LEVEL-3></LEVEL-2><
> > /LEVEL-1>
> >
> > But when the str field is null, then the structure is collapsed to:
> > <LEVEL-1/>
> >
> > And I need to push Castor to this structure (and best of all
> > is to do it with mapping and without coding):
> > <LEVEL-1><LEVEL-2><LEVEL-3/></LEVEL-2></LEVEL-1>
> >
> > How can I do this ???
> >
> > Thanks a lot for the response.
> >
> > Pat
> >
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