Martin Desruisseaux created SIS-74:
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Summary: Remove reference to NamespacePrefixMapper from
MarshallerPool
Key: SIS-74
URL: https://issues.apache.org/jira/browse/SIS-74
Project: Spatial Information Systems
Issue Type: Task
Components: Utilities
Environment: JDK6 and JDK7 (both may need a different approach)
Reporter: Martin Desruisseaux
Assignee: Martin Desruisseaux
Fix For: 0.3
The SIS {{MarshallerPool}} class uses the {{NamespacePrefixMapper}} class from
the {{com.sun.xml.internal.bind}} package. We are obviously not supposed to use
this internal class, but research on Internet 3 years ago suggested that they
were no way (at least at that time) to specify the root namespace (the
namespace that do not need prefix) and to customize the prefixes. Worst, this
internal feature was
[advertised|http://java.sun.com/webservices/docs/1.5/jaxb/vendorProperties.html]
as customizable by the "{{com.sun.xml.internal.bind.namespacePrefixMapper}}"
(bundled JAXB) or "{{com.sun.xml.bind.namespacePrefixMapper}}" (endorsed JAXB)
property, and the {{NamespacePrefixMapper} javadoc said: "_Implemented by the
user application to determine URI -> prefix mapping_".
As an alternative, research on Internet suggests that the
{{javax.xml.bind.annotation.XmlSchema}} annotation works as expected in JDK7,
but JDK6 users have to use the endorsed JAXB version 2.2.4 or above. We still
have to check if the annotation really works for us.
If the annotations do not work, then we may have to keep the
{{NamespacePrefixMapper}} hack. Problem is that the {{javac}} compiler normally
blocks attempts to use this {{com.sun.xml.internal}} class. A workaround found
on Internet (not yet tested) is to use the following compiler option:
{noformat}
-XDignore.symbol.file
{noformat}
If the above does not work, an alternative is to put {{rt.jar}} on the
classpath as a Maven dependency using {{<scope>system</scope>}}.
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