Wolfgang Laun wrote:
> This does not depend on <choice...> alone. Can you post a full .xsd
> producing the exception?
> -W
>
> On 11/22/09, John Leonard <jleonard.20081_at_gmx.com> wrote:
>
>> Does JAXB understand the following use of the "choice" element?
>>
>> <choice minOccurs="0" maxOccurs="unbounded">
>> <element...
>> <element...
>> ...
>> </choice>
>>
>> Here is the output of XJC when I run it from the command line on a file
>> containing such code:
>> parsing a schema...
>> compiling a schema...
>> [INFO] generating code
>> unknown location
>>
>> Exception in thread "main" java.lang.reflect.UndeclaredThrowableException
>> at $Proxy7.required(Unknown Source)
>> at
>> com.sun.tools.xjc.generator.bean.field.AbstractField.annotateReferenc
>> e(AbstractField.java:197)
>> at
>> com.sun.tools.xjc.generator.bean.field.AbstractField.annotate(Abstrac
>> tField.java:156)
>> at
>> com.sun.tools.xjc.generator.bean.field.AbstractListField.generate(Abs
>> tractListField.java:124)
>> at
>> com.sun.tools.xjc.generator.bean.field.UntypedListField.<init>(Untype
>> dListField.java:107)
>> at
>> com.sun.tools.xjc.generator.bean.field.UntypedListFieldRenderer.gener
>> ate(UntypedListFieldRenderer.java:72)
>> at
>> com.sun.tools.xjc.generator.bean.field.DefaultFieldRenderer.generate(
>> DefaultFieldRenderer.java:79)
>> at
>> com.sun.tools.xjc.generator.bean.BeanGenerator.generateFieldDecl(Bean
>> Generator.java:747)
>> at
>> com.sun.tools.xjc.generator.bean.BeanGenerator.generateClassBody(Bean
>> Generator.java:535)
>> at
>> com.sun.tools.xjc.generator.bean.BeanGenerator.<init>(BeanGenerator.j
>> ava:235)
>> at
>> com.sun.tools.xjc.generator.bean.BeanGenerator.generate(BeanGenerator
>> .java:175)
>> at com.sun.tools.xjc.model.Model.generateCode(Model.java:286)
>> at com.sun.tools.xjc.Driver.run(Driver.java:343)
>> at com.sun.tools.xjc.Driver.run(Driver.java:191)
>> at com.sun.tools.xjc.Driver._main(Driver.java:116)
>> at com.sun.tools.xjc.Driver.access$000(Driver.java:74)
>> at com.sun.tools.xjc.Driver$1.run(Driver.java:96)
>> Caused by: java.lang.NoSuchMethodException:
>> javax.xml.bind.annotation.XmlElement
>> Ref.required()
>> at java.lang.Class.getDeclaredMethod(Unknown Source)
>> at
>> com.sun.codemodel.TypedAnnotationWriter.invoke(TypedAnnotationWriter.
>> java:107)
>> ... 17 more
>>
>> Thanks,
>> John L.
>>
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>>
>>
>>
>
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File "xjc_compiles.xsd":
<?xml version="1.0" encoding="UTF-8"?>
<schema
xmlns="
http://www.w3.org/2001/XMLSchema"
targetNamespace="
http://www.sudokucaptain.com/CommandString111609"
xmlns:cs="
http://www.sudokucaptain.com/CommandString111609">
<element name="TestElement">
<complexType>
<choice>
<element name="element1" />
<element name="element2" />
</choice>
</complexType>
</element>
</schema>
File "xjc_doesnt_compile.xsd":
<?xml version="1.0" encoding="UTF-8"?>
<schema
xmlns="
http://www.w3.org/2001/XMLSchema"
targetNamespace="
http://www.sudokucaptain.com/CommandString111609"
xmlns:cs="
http://www.sudokucaptain.com/CommandString111609">
<element name="TestElement">
<complexType>
<choice minOccurs="0" maxOccurs="unbounded">
<element name="element1" />
<element name="element2" />
</choice>
</complexType>
</element>
</schema>
The only difference between these two files is this line:
<choice minOccurs="0" maxOccurs="unbounded">
I think JAXB would have a hard time working with a List containing
unrelated types. Their only common ancestor would be "Object". It would
still be nice, however, if this could be done as it would offer an
alternative to creating large groups of related types and substitution
groups.
John L.