[geotk] Moving from geotk to Apache-sis - problems with metadata xml marshalling

[Emmanuel Blondel]

Hello,

i'm moving now from geotoolkit to Apache SIS, progressively, by using 
Geotk 4.0-M1 which uses some apache SIS modules (0.3-jdk7), and in the 
meantime, moving from jdk6 to jdk7.

What i have is a class that extends the DefaultMetadata.
I have a marshaller unit test that works fine. And the main application 
of my program works fine to marshall the metadata when i use it directly 
from Eclipse.

To use the my tool outside Eclipse, i've built a shaded Jar with Maven 
to embedd all dependencies.
But when i try to to run it the main application from command line, i 
get an error dealing with JAXB context.

I was previously using similar code with geotk, and it was working properly.

The first error i get deals with the missing annotation 
@XmlRootElement(name = "MD_Metadata") for my subclass

/Exception in thread "main" java.lang.Exception: Fail to publish 
data/metadata pair//
//        at 
org.fao.fi.gems.publisher.Publisher.publish(Publisher.java:91)//
//        at 
org.fao.fi.gems.application.MetadataGenerator.main(MetadataGenerator.java:178)//
//Caused by: java.lang.Exception: Failed to publish metadata//
//        at 
org.fao.fi.gems.publisher.MetadataPublisher.publishMetadata(MetadataPublisher.java:104)//
//        at 
org.fao.fi.gems.publisher.Publisher.publish(Publisher.java:68)//
//        ... 1 more//
//Caused by: javax.xml.bind.MarshalException//
// - with linked exception://
//[com.sun.istack.internal.SAXException2: unable to marshal type 
"org.fao.fi.gems.GemsMetadata" as an//
//element because it is missing an @XmlRootElement annotation]//
//        at 
com.sun.xml.internal.bind.v2.runtime.MarshallerImpl.write(Unknown Source)//
//        at 
com.sun.xml.internal.bind.v2.runtime.MarshallerImpl.marshal(Unknown 
Source)//
//        at 
javax.xml.bind.helpers.AbstractMarshallerImpl.marshal(Unknown Source)//
//        at 
org.apache.sis.xml.PooledMarshaller.marshal(PooledMarshaller.java:138)//
//        at org.apache.sis.xml.XML.marshal(XML.java:374)//
//        at 
org.fao.fi.gems.publisher.MetadataPublisher.publishMetadata(MetadataPublisher.java:84)//
//        ... 2 more//
//Caused by: com.sun.istack.internal.SAXException2: unable to marshal 
type "org.fao.fi.gems.GemsMetada//
//ta" as an element because it is missing an @XmlRootElement annotation//
//        at 
com.sun.xml.internal.bind.v2.runtime.XMLSerializer.reportError(Unknown 
Source)//
//        at 
com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.serializeRoot(Unknown 
Source)//
//        at 
com.sun.xml.internal.bind.v2.runtime.XMLSerializer.childAsRoot(Unknown 
Source)//
//        ... 8 more/

After adding the missing annotation, everything still works (tests, main 
app in Eclipse)
If i try to run the app with the shaded jar, i get the following error:

/Exception in thread "main" java.lang.Exception: Fail to publish 
data/metadata pair//
//        at 
org.fao.fi.gems.publisher.Publisher.publish(Publisher.java:91)//
//        at 
org.fao.fi.gems.application.MetadataGenerator.main(MetadataGenerator.java:178)//
//Caused by: java.lang.Exception: Failed to publish metadata//
//        at 
org.fao.fi.gems.publisher.MetadataPublisher.publishMetadata(MetadataPublisher.java:104)//
//        at 
org.fao.fi.gems.publisher.Publisher.publish(Publisher.java:68)//
//        ... 1 more//
//Caused by: javax.xml.bind.MarshalException//
// - with linked exception://
//[com.sun.istack.internal.SAXException2: unable to marshal type 
"org.fao.fi.gems.GemsMetadata" as an//
//element because it is not known to this context.]//
//        at 
com.sun.xml.internal.bind.v2.runtime.MarshallerImpl.write(Unknown Source)//
//        at 
com.sun.xml.internal.bind.v2.runtime.MarshallerImpl.marshal(Unknown 
Source)//
//        at 
javax.xml.bind.helpers.AbstractMarshallerImpl.marshal(Unknown Source)//
//        at 
org.apache.sis.xml.PooledMarshaller.marshal(PooledMarshaller.java:138)//
//        at org.apache.sis.xml.XML.marshal(XML.java:374)//
//        at 
org.fao.fi.gems.publisher.MetadataPublisher.publishMetadata(MetadataPublisher.java:84)//
//        ... 2 more//
//Caused by: com.sun.istack.internal.SAXException2: unable to marshal 
type "org.fao.fi.gems.GemsMetada//
//ta" as an element because it is not known to this context.//
//        at 
com.sun.xml.internal.bind.v2.runtime.XMLSerializer.reportError(Unknown 
Source)//
//        at 
com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.serializeRoot(Unknown 
Source)//
//        at 
com.sun.xml.internal.bind.v2.runtime.XMLSerializer.childAsRoot(Unknown 
Source)//
//        ... 8 more//
/
Do you have any idea what is wrong? (and also why would i need to add 
/xmlRootElement/? )
What are the differences between the geotk JAXB xml marshaller and the 
Apache SIS one?

I would be very grateful if you could advice how to solve this...

Many thanks in advance
Kind regards

-- 
*Emmanuel Blondel*
GIS Consultant
Engineer in Agronomy & Environment

Geographic Information Systems
in Agronomy - Environment - Fisheries
Email: emmanuel.blondel1 at gmail.com - Emmanuel.Blondel at fao.org
View my LinkedIn profileView my LinkedIn profile 
<http://fr.linkedin.com/in/emmanuelblondel1>
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