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[xsd-dev] NullPointerException on getResource()
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Hi,
I'm just trying to get started with this tool, and seem to be
hitting a wall out of the box. I'd really appreciate any help
anyone can offer pointing me in the right direction.
I'm trying to use it outside of the Eclipse environment.
I've downgraded my environment to use jdk 1.3.1 and xerces
2.0.6 as it seems to require, and set up the classpath to be
exactly the 6 jars specified in the FAQ and in that order,
except that I am using 1.1.1 of these jars.
To get started I'm just trying to load up a simple schema,
borrowing from the code I've found on the site--the same
pattern used in the "Analyzing XML schemas with the Schema
Infoset Model" article, and in the sample code in the java doc
pointed to by the FAQ (XSDPrototypicalSchema.html).
However I keep getting a NullPointerException on the call to
getResource() on the ResourceSet. Am I doing something
stupid? Missing something basic? Or is the info I'm looking at
out of date for version 1.1.1?
My code, up to the line where the NullPointerException occurs,
looks like this:
----------------------
Resource.Factory.Registry.INSTANCE.getExtensionToFactoryMap().put("xsd",
new XSDResourceFactoryImpl());
File schemaFile = newFile("C:\\aps\\schemas\\myschema.xsd");
URI schemaURI =
URI.createFileURI(schemaFile.getCanonicalFile().toString());
ResourceSet resourceSet = new ResourceSetImpl();
XSDResourceImpl xsdSchemaResource =
(XSDResourceImpl)resourceSet.getResource(schemaURI, true);
---------------------
I was originally working with a HTTP based schema URL and was
originally using a line more like what was in the example code
like
XSDResourceImpl xsdSchemaResource =
(XSDResourceImpl)resourceSet.getResource(URI.createDeviceURI(schemaURI),
true)
But this gave me that exception so I attempted to simply to
use a local file. All roads seems to lead to that same
stack traces (some seem to be emitted from the guts of the xsd
code):
java.lang.NullPointerException
at
org.eclipse.emf.common.EMFPlugin.getBaseURL(EMFPlugin.java:101)
at
org.eclipse.xsd.util.XSDResourceImpl.createEntityResolver(XSDResourceImpl.java:207)
at
org.eclipse.xsd.util.XSDResourceImpl.getDocument(XSDResourceImpl.java:179)
at
org.eclipse.xsd.util.XSDResourceImpl.doLoad(XSDResourceImpl.java:333)
at
org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(ResourceImpl.java:881)
at
org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(ResourceImpl.java:755)
at
org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoad(ResourceSetImpl.java:220)
at
org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResource(ResourceSetImpl.java:286)
at
com.classwell.offline.schema.XsdParseTest.getSchema(XsdParseTest.java:71)
at
com.classwell.offline.schema.XsdParseTest.main(XsdParseTest.java:42)
java.lang.NullPointerException
at
org.eclipse.emf.common.EMFPlugin.getBaseURL(EMFPlugin.java:101)
at
org.eclipse.xsd.impl.XSDSchemaImpl.getSchemaInstance(XSDSchemaImpl.java:707)
at
org.eclipse.xsd.impl.XSDSchemaImpl.resolveSchema(XSDSchemaImpl.java:2040)
at
org.eclipse.xsd.impl.XSDSchemaImpl.patch(XSDSchemaImpl.java:1485)
at
org.eclipse.xsd.impl.XSDSchemaImpl.changeAttribute(XSDSchemaImpl.java:2241)
at
org.eclipse.xsd.impl.XSDConcreteComponentImpl.eNotify(XSDConcreteComponentImpl.java:1205)
at
org.eclipse.xsd.impl.XSDSchemaImpl.setSchemaLocation(XSDSchemaImpl.java:842)
at
org.eclipse.xsd.util.XSDResourceImpl.attached(XSDResourceImpl.java:410)
at
org.eclipse.emf.ecore.resource.impl.ResourceImpl$ContentsEList.inverseAdd(ResourceImpl.java:326)
at
org.eclipse.emf.common.notify.impl.NotifyingListImpl.addUnique(NotifyingListImpl.java:233)
at
org.eclipse.emf.common.util.BasicEList.add(BasicEList.java:588)
at
org.eclipse.xsd.util.XSDResourceImpl.doLoad(XSDResourceImpl.java:374)
at
org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(ResourceImpl.java:881)
at
org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(ResourceImpl.java:755)
at
org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoad(ResourceSetImpl.java:220)
at
org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResource(ResourceSetImpl.java:286)
at
com.classwell.offline.schema.XsdParseTest.getSchema(XsdParseTest.java:71)
at
com.classwell.offline.schema.XsdParseTest.main(XsdParseTest.java:42)
Exception in thread "main" java.lang.NullPointerException
at
org.eclipse.emf.common.EMFPlugin.getBaseURL(EMFPlugin.java:101)
at
org.eclipse.xsd.impl.XSDSchemaImpl.getGlobalResourceSet(XSDSchemaImpl.java:527)
at
org.eclipse.xsd.impl.XSDSchemaImpl.getSchemaInstance(XSDSchemaImpl.java:721)
at
org.eclipse.xsd.impl.XSDSchemaImpl.resolveSchema(XSDSchemaImpl.java:2040)
at
org.eclipse.xsd.impl.XSDSchemaImpl.patch(XSDSchemaImpl.java:1485)
at
org.eclipse.xsd.impl.XSDSchemaImpl.changeAttribute(XSDSchemaImpl.java:2241)
at
org.eclipse.xsd.impl.XSDConcreteComponentImpl.eNotify(XSDConcreteComponentImpl.java:1205)
at
org.eclipse.xsd.impl.XSDSchemaImpl.setSchemaLocation(XSDSchemaImpl.java:842)
at
org.eclipse.xsd.util.XSDResourceImpl.attached(XSDResourceImpl.java:410)
at
org.eclipse.emf.ecore.resource.impl.ResourceImpl$ContentsEList.inverseAdd(ResourceImpl.java:326)
at
org.eclipse.emf.common.notify.impl.NotifyingListImpl.addUnique(NotifyingListImpl.java:233)
at
org.eclipse.emf.common.util.BasicEList.add(BasicEList.java:588)
at
org.eclipse.xsd.util.XSDResourceImpl.doLoad(XSDResourceImpl.java:374)
at
org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(ResourceImpl.java:881)
at
org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(ResourceImpl.java:755)
at
org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoad(ResourceSetImpl.java:220)
at
org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResource(ResourceSetImpl.java:286)
at
com.classwell.offline.schema.XsdParseTest.getSchema(XsdParseTest.java:71)
at
com.classwell.offline.schema.XsdParseTest.main(XsdParseTest.java:42)
Thanks,
Eric
