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Class cast exception when saving to XML [message #1744692]

Thu, 29 September 2016 13:59

Geoffry Roberts

Messages: 52
Registered: July 2016

Member

All,

I am getting an error when trying to save an EMF object graph. All my /EMF code was generated from a set of XSDs. These produce three ecore files. Two of these are dependencies of one. Since everything is generated without error, why would this class cast happen. It must be something in the XSDs.

I've used EMF extensively but this is a first. Does anyone know what might be causing this?

java.lang.ClassCastException: namespace.impl.NamespaceFactoryImpl cannot be cast to org.eclipse.emf.ecore.xml.namespace.XMLNamespaceFactory
	at org.eclipse.emf.ecore.xml.namespace.impl.XMLNamespaceFactoryImpl.init(XMLNamespaceFactoryImpl.java:46)
	at org.eclipse.emf.ecore.xml.namespace.XMLNamespaceFactory.<clinit>(XMLNamespaceFactory.java:30)
	at org.eclipse.emf.ecore.xml.namespace.impl.XMLNamespacePackageImpl.<init>(XMLNamespacePackageImpl.java:90)
	at org.eclipse.emf.ecore.xml.namespace.impl.XMLNamespacePackageImpl.init(XMLNamespacePackageImpl.java:117)
	at org.eclipse.emf.ecore.xml.namespace.XMLNamespacePackage.<clinit>(XMLNamespacePackage.java:69)
	at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.addNamespaceDeclarations(XMLSaveImpl.java:900)
	at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.traverse(XMLSaveImpl.java:607)
	at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.save(XMLSaveImpl.java:251)
	at org.eclipse.emf.ecore.xmi.impl.XMLResourceImpl.doSave(XMLResourceImpl.java:389)
	at org.eclipse.emf.ecore.resource.impl.ResourceImpl.save(ResourceImpl.java:1430)
	at fhir.forecast.Save.it(Save.java:36)
	at fhir.forecast.SaveTest.testIt(SaveTest.java:23)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at ...

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Re: Class cast exception when saving to XML [message #1744720 is a reply to message #1744692]

Thu, 29 September 2016 15:55

Ed Merks

Messages: 33137
Registered: July 2009

Senior Member

It seems you registered something that uses the same namespace as the built-in one, i., String eNS_URI = "http://www.w3.org/XML/1998/namespace". You should reuse the generated one in your model (when you load the GenModel you should use the existing package in the bottom half of the wizard.

Ed Merks
Professional Support: https://www.macromodeling.com/

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Re: Class cast exception when saving to XML [message #1744722 is a reply to message #1744720]

Thu, 29 September 2016 16:18

Geoffry Roberts

Messages: 52
Registered: July 2016

Member

Thanks Ed that worked.

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