Recently, I ran into a couple of rather interesting problems with the
whole label/using schtick... One's already in jira as JiBX-16...The
other...
FYI: As I'm running these tests, I'm using the org.jibx.binding.Run
class for runtime bindings, but I get the same error when running the
binding from the command line, instead..
Given the objects:
public class StructureInCollectionTestBase
{
ArrayList contents = null;
Internal other = null;
}
public class Internal
{
public String stringValue;
public Long longValue;
}
and binding:
<binding name="StructureInCollection">
<mapping name="base" class="StructureInCollectionTestBase">
<collection name="collection" field="contents">
<structure type="Internal" using="internal" name="internal"/>
</collection>
<structure name="internal" field="other" label="internal"
type="Internal">
<value field="stringValue" name="string" usage="optional"/>
<value field="longValue" name="long" usage="optional"/>
</structure>
</mapping>
</binding>
Everything works as expected. If, on the other hand, I 'label' the
structure inside the collection, and 'using' it elsewhere, like so:
<binding name="StructureInCollection">
<mapping name="base" class="StructureInCollectionTestBase">
<collection name="collection" field="contents">
<structure type="Internal" label="internal" name="internal">
<value field="stringValue" name="string" usage="optional"/>
<value field="longValue" name="long" usage="optional"/>
</structure>
</collection>
<structure name="internal" field="other" using="internal"/>
</mapping>
</binding>
I receive an exception:
Exception in thread "main" java.lang.IllegalStateException: Internal
error: Expected Internal on stack, found
org.jibx.runtime.impl.MarshallingContext
full stack:
0: org.jibx.runtime.impl.MarshallingContext
1: org.jibx.runtime.impl.MarshallingContext
2: Internal
at
org.jibx.binding.classes.MethodBuilder.verifyCompatible(MethodBuilder.java:408)
at
org.jibx.binding.classes.MethodBuilder.verifyCallStack(MethodBuilder.java:497)
at
org.jibx.binding.classes.MethodBuilder.appendCall(MethodBuilder.java:807)
at
org.jibx.binding.def.ObjectBinding.genMarshalContentCall(ObjectBinding.java:684)
at
org.jibx.binding.def.ObjectBinding.genContentMarshal(ObjectBinding.java:728)
at
org.jibx.binding.def.ComponentProperty.genContentMarshal(ComponentProperty.java:241)
at
org.jibx.binding.def.StructureReference.genContentMarshal(StructureReference.java:104)
at
org.jibx.binding.def.ElementWrapper.genContentMarshal(ElementWrapper.java:380)
at
org.jibx.binding.def.NestedStructure.genContentMarshal(NestedStructure.java:190)
at
org.jibx.binding.def.ObjectBinding.genMarshalContentCall(ObjectBinding.java:668)
at
org.jibx.binding.def.ObjectBinding.genContentMarshal(ObjectBinding.java:728)
at
org.jibx.binding.def.ElementWrapper.genContentMarshal(ElementWrapper.java:380)
at
org.jibx.binding.def.MappingDefinition.generateCode(MappingDefinition.java:560)
at
org.jibx.binding.def.DefinitionContext.generateCode(DefinitionContext.java:593)
at
org.jibx.binding.def.BindingDefinition.generateCode(BindingDefinition.java:562)
at org.jibx.binding.Loader.processBindings(Loader.java:292)
at org.jibx.binding.Run.main(Run.java:190)
Given this simple example, the problem is easily corrected by not
placing the 'label' inside the collection. On the other hand, where I
first ran into this problem was with a binding where both the 'label'
and the referencing 'using's were inside collections, thus not allowing
me that solution. Further, since the structure needed to have different
names in different places, I couldn't simply make a mapping for the
object (Name not allowed when using mapping reference at...).
The only work-around I know of at the moment involves the copy-paste
method of programming, which is doable, but not exactly desirable.
Anyhow, if some sort of decent workaround exists, It would be good to
know.. otherwise, I guess this is a bug report..
Darin Clark
[EMAIL PROTECTED]
ADVENTURE(n): Someone else, far away, in one heck of a fix.
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