Re: [castor-dev] Marshalling an interface

Pawel Rzepa Thu, 25 Sep 2003 01:42:04 -0700

You are my personal hero :-))
It works. Thanks!

Keith Visco wrote:

Pawel,

Normally Castor likes to make sure it can "unmarshal" the marshalled
instance (round-trip: java->xml->java), but, if you only care about the
marshalling, then you can take a look at this tip, it should help:

http://www.brainopolis.com/castorwiki/Wiki.jsp?page=Constructable

--Keith

Pawel Rzepa wrote:

Hi all,
  I have a problem regarding using Castor XML Mapping with interfaces.
I try to marshall an interface and I can't do that. I've written the
simple interface:
public interface IMapped {
    public String getName();
    public void setName(String string);
}
and class that implement it.

When I marshall IMapped using default mapping everything works great.
But when I use my own mapping:
<mapping>
<class name="IMapped">
<field name="name" type="string"/>
</class>
</mapping>

I got the following exception:

org.exolab.castor.mapping.MappingException: The Java class IMapped is
not constructable -- it does n
ot contain a default public constructor
       at
org.exolab.castor.mapping.loader.ClassDescriptorImpl.<init>(ClassDescriptorImpl.java:152)
...

Did I do something wrong or does it the way Castor XML Mapping work? I
understand that to unmarshall object it must be constructable (as
mentioned in Castor documentation). But to marshall - what for?

Any help appreciated.

Regards,
  Pawel Rzepa

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