Hi Joshua,
Thank you so much for taking the time to help me with this. I have
spent countless hours on this until my eyes glazed over. ;)
The problem with my object model is that it's deeply hierarchical and
nested, and unfortunately I can't really change it. That's why we are
using JiBX. We figured that it's the only tool that can handle our
crazy data structure. It works as advertised for us for everything
but the schema group substitution.
Since I simplified my example earlier, I did not tell you that
actually SuperHeader has four more levels of superclasses above it,
and it has two subclasses, one of which is Header. In addition,
Container is contained by other objects as well. This is why I ended
up "double-declaring" these elements. So I tried to mimic your
example as best as I could, following the way that you double-declared
the "Header" example. I also noticed that sometimes you used "map-as"
with the classname and other times with the mapping type-name. I
think I read that they're supposed to be functionally equivalent, but
for some reason, I can only use the mapping type-name. Using the
classname causes all kinds of errors.
Sadly, there's still something wrong. The error that I get is:
junit.framework.AssertionFailedError: Element
"{http://www.gmail.com/my}Header"; has no mapping that extends
org.standard.Header
at junit.framework.Assert.fail(Assert.java:47)
Normally, at this point I'll start to try different things. But after
having done that for hours before and not getting anywhere, I don't
think that I have a good enough understanding of JiBX to succeed that
way. So I'm hoping that you or someone else can see what I'm doing
wrong.
Here's what I have:
<binding>
<namespace uri="http://www.gmail.com/st"; default="elements"/>
<namespace uri="http://www.gmail.com/my"; default="none" prefix="my"/>
<mapping type-name="SuperHeader" abstract="true"
class="org.standard.SuperHeader">
<structure map-as="SuperSuperHeader"/>
</mapping>
<mapping name="SuperHeader"
class="org.standard.SuperHeader"
extends="org.standard.SuperSuperHeader">
<structure map-as="SuperHeader"/>
<value name="companyId" field="companyId" />
</mapping>
<mapping type-name="Header" abstract="true"
class="org.standard.Header">
<structure map-as="Header"/>
</mapping>
<mapping name="Header"
class="org.standard.Header"
extends="org.standard.SuperSuperHeader">
<structure map-as="Header"/>
<value name="branchId" field="branchId" />
</mapping>
<mapping name="myHeader"
class="com.my.Header"
extends="org.standard.Header">
<structure map-as="Header"/>
<value name="employeeId" field="employeeId" ns="http://www.gmail.com/my"; />
</mapping>
<mapping type-name="Container" abstract="true"
class="org.standard.Container">
<structure field="header"/>
</mapping>
<mapping name="Container"
class="org.standard.Container">
<structure map-as="Container" />
</mapping>
</binding>
Again, I really appreciate your time and any help that you or anybody
else can give me.
Thanks!
--Polly
On 1/24/08, Joshua Davies <[EMAIL PROTECTED]> wrote:
> I think your problem is here:
>
> <mapping type-name="Container" abstract="true"
> class="org.standard.Container">
> <structure name="Header" field="header" map-as="Header" usage="optional"/>
> ...
> </mapping>
>
> <mapping name="Container"
> class="org.standard.Container">
> <structure map-as="Container"/>
> </mapping>
>
> You're telling Jibx that Container includes a Container element as it's
> first element. In general, you don't have to "double-declare" elements
> this way unless you're extending from something that can appear as a
> standalone element (such as your "Header" example).
>
> I took this out and made a few other minor changes to your binding and,
> assuming that I understand your class structure and XML structure
> correctly, was able to produce a binding file that works correctly:
>
> <binding direction="input">
> <namespace uri="http://www.gmail.com/st"; prefix="st"
> default="elements" />
> <namespace uri="http://www.gmail.com/my"; prefix="my" />
>
> <mapping class="org.standard.SuperHeader" abstract="true"
> ns="http://www.gmail.com/st";>
> <value name="companyId" field="companyId" />
> </mapping>
>
> <mapping class="org.standard.Header" ns="http://www.gmail.com/st";
> type-name="header" abstract="true">
> <structure map-as="org.standard.SuperHeader" />
> <value name="branchId" field="branchId" />
> </mapping>
>
> <mapping name="Header" class="org.standard.Header"
> extends="org.standard.SuperHeader"
> ns="http://www.gmail.com/st";>
> <structure map-as="header" />
> </mapping>
>
> <mapping name="myHeader" class="com.my.Header"
> extends="org.standard.Header" ns="http://www.gmail.com/my";>
> <structure map-as="header" />
> <value name="employeeId" field="employeeId"
> ns="http://www.gmail.com/my"; />
> </mapping>
>
> <mapping name="Container" class="org.standard.Container"
> ns="http://www.gmail.com/st";>
> <structure field="header" />
> </mapping>
> </binding>
>
> I added some random data elements to each of the classes so that I could
> verify that the bindings were being processed correctly.
>
> I tested this against the following two XML documents:
>
> <st:Container xmlns:st="http://www.gmail.com/st";>
> <my:myHeader xmlns:my="http://www.gmail.com/my";>
> <st:companyId>123</st:companyId>
> <st:branchId>456</st:branchId>
> <my:employeeId>abc</my:employeeId>
> </my:myHeader>
> </st:Container>
>
> and:
>
> <st:Container xmlns:st="http://www.gmail.com/st";>
> <st:Header>
> <st:companyId>123</st:companyId>
> <st:branchId>456</st:branchId>
> </st:Header>
> </st:Container>
>
> Which I beleive encompass your primary use cases (again, data elements
> made up so I could verify that everything unmarshalled correctly).
>
> I take it from your description below that myHeader extends Header,
> which extends SuperHeader (and Container extends nothing, but has a data
> element of type SuperHeader). If I'm off about the actual type
> hierarchy, things change around a bit, but not much.
>
> On Wed, 2008-01-23 at 17:52 -0500, amphoras wrote:
> > Hi,
> >
> > First, I want to say that JiBX is a really neat tool. It makes XML to
> > Java serialization so easy. However, we are using schema group
> > substitution a lot, and this seems to be an "advanced" feature. I
> > would really appreciate your help.
> >
> > I have read the page about mapping inheritance
> > (http://jibx.sourceforge.net/tutorial/binding-mappings.html#inherit)
> > many times, but I am still not able to get it to work. What I have is
> > this class hierarchy:
> >
> > org.standard.SuperHeader
> > org.standard.Header
> > com.my.Header
> >
> > The schema for my Header says (st=standard):
> > <xsd:element name="Header" type="HeaderType" substitutionGroup="st:Header"
> > />
> >
> > The JiBX mapping is defined as follows:
> > <mapping type-name="Header" abstract="true"
> > class="org.standard.Header"
> > extends="org.standard.SuperHeader">
> > <structure map-as="SuperHeader"/>
> > ...
> > </mapping>
> >
> > <mapping name="Header"
> > class="org.standard.Header"
> > extends="org.standard.SuperHeader">
> > <structure map-as="Header"/>
> > </mapping>
> >
> >
> > subclass:
> > <mapping name="myHeader"
> > class="com.my.Header"
> > extends="org.standard.Header">
> > <structure map-as="Header"/>
> > ...
> > </mapping>
> >
> > Then I have a container class, let's call "org.standard.Container"
> > that can contain either "org.standard.Header" or "com.my.Header":
> >
> > <mapping type-name="Container" abstract="true"
> > class="org.standard.Container">
> > <structure name="Header" field="header" map-as="Header"
> > usage="optional"/>
> > ...
> > </mapping>
> >
> > <mapping name="Container"
> > class="org.standard.Container">
> > <structure map-as="Container"/>
> > </mapping>
> >
> > The Java class is like:
> >
> > package org.standard;
> >
> > public class Container {
> > Header header;
> > }
> >
> > When I process XML that contains <st:Header>, everything's fine. But
> > when I process XML that contains <my:Header>, it doesn't work:
> >
> > Here's the XML:
> > <st:Container>
> > <my:Header>
> > ...
> > </my:Header>
> > </st:Container>
> >
> > I get:
> >
> > org.jibx.runtime.JiBXException: Expected "{http://standard}Container";
> > end tag, found "{http://my}Header"; start tag (line 67, col 35)
> > at
> > org.jibx.runtime.impl.UnmarshallingContext.parsePastCurrentEndTag(Unknown
> > Source)
> >
> > I have tried all different combinations of "map-as" to no avail. I
> > really like the natural, OO way that JiBX does schema group
> > substitution, so I really want to get this to work. I appreciate any
> > help that you can give me.
> >
> > Thanks!
> > --Polly
> >
>
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