Multiple <any /> elements on a schema : second element is not loaded

[glassfishrobot]

An XML schema is mapped via JAXB to java objects with multiple elements. When unmarshalling an XML file which is compliant to this schema the object corresponding to the second element (and so on) is always null.

Here is the portion of the XML schema :

Here is the portion of the JAXB customization file :

Here is the portion of the XML file :

true false

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Reported by sergiomail

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Was assigned to yaroska

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snajper said:
There's no way to figure out where does the first 'any' content ends, thus the behaviour.

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bkerrien said:
Sorry to add a comment to a closed issue, but I don't get your answer and, thus, I don't understand why the issue was closed without any real fix.

In the example given by sergiomail, the 2 any elements are declared in the XSD without giving any information about the minOccurs and maxOccurs properties, so the default values apply for these properties, i.e. minOccurs="1" and maxOccurs="1". So, the given XSD is equivalent to the following:

<complexType name="entry">
   <sequence>
      <any minOccurs="1" maxOccurs="1" />
      <any minOccurs="1" maxOccurs="1" />
   </sequence>
</complexType>

Now, looking at the XML example given by sergiomail for this XSD, there is absolutely no ambiguity about where the first any content ends: it ends where the first tag ends (and we know that the second tag corresponds to the second any element).

Maybe I'm missing something (I'm not an XML/XSD guru) but this is how I understand the W3C's XML Schema specifications.

The fact that JAXB treats a sequence of 2 any elements with minOccurs=maxOccurs=1 as if it was a single unbounded any element is a major issue. As far as I'm concerned, I have the same kind of case in a XSD (i.e. a sequence of 2 any elements with minOccurs=maxOccurs=1) and I'm trying to use the XJC simple mode with a binding customization in order to generate one property with a given name for the first any element and one property with another name for the second any element, but XJC complains because having 2 property bindings for what it detects as a single any element (instead of 2) looks erroneous to it.

To be clearer, here is the XSD and the binding customization I'm trying to use:

**test.xsd**<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">

   <xs:element name="Document" type="DocumentType"/>

   <xs:complexType name="DocumentType">
      <xs:sequence>
         <xs:any processContents="lax"/>
         <xs:any processContents="lax"/>
      </xs:sequence>
   </xs:complexType>

</xs:schema>

**binding.xjb**<?xml version="1.0" encoding="UTF-8"?>
<jaxb:bindings version="2.1"
   xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
   xmlns:xjc="http://java.sun.com/xml/ns/jaxb/xjc"
   xmlns:xs="http://www.w3.org/2001/XMLSchema"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://java.sun.com/xml/ns/jaxb http://java.sun.com/xml/ns/jaxb/bindingschema_2_0.xsd"
   jaxb:extensionBindingPrefixes="xjc">

   <jaxb:globalBindings>
      <xjc:simple/>
   </jaxb:globalBindings>

   <jaxb:bindings schemaLocation="test.xsd">

      <jaxb:schemaBindings>
         <jaxb:package name="test"/>
      </jaxb:schemaBindings>

      <jaxb:bindings node="xs:complexType[@name='DocumentType']/xs:sequence">
         <jaxb:bindings node="xs:any[1]">
            <jaxb:property name="first"/>
         </jaxb:bindings>
         <jaxb:bindings node="xs:any[2]">
            <jaxb:property name="second"/>
         </jaxb:bindings>
      </jaxb:bindings>

   </jaxb:bindings>

</jaxb:bindings>

And here is the XJC output when trying to generate the classes:

parsing a schema...
[ERROR] compiler was unable to honor this property customization. It is attached to a wrong place, or its inconsistent with other bindings.
  line 22 of file:/C:/Temp/binding.xjb

[ERROR] (the above customization is attached to the following location in the schema)
  line 8 of file:/C:/Temp/test.xsd

Failed to parse a schema.

If I comment out the 2 property bindings in the binding.xjb customization, then there's no more error, but the 2 any elements are generated as a single property named anies, of type List, instead of 2 properties of type Object.

I understand it's not the same issue as the original one, but I guess these 2 issues are linked. What is your point of view about this?

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snajper said:
Actually, you're right, thanks for exact clarification. I'm reopening and reassigning.

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bkerrien said:
Thanks a lot, Martin.

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This issue was imported from java.net JIRA JAXB-869