问题
I'm trying to implement the sample code to this article from 2002 (I know..), but cannot get the schema to load.
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl;
import org.eclipse.xsd.util.XSDResourceImpl;
ResourceSet resourceSet = new ResourceSetImpl();
// I replaced the deprecated createDeviceURI with createURI as recommended in JavaDoc
XSDResourceImpl xsdSchemaResource =
(XSDResourceImpl)resourceSet.getResource(URI.createURI("my.xsd"), true);
I'm using the following Maven2 dependencies:
<dependency>
<groupId>org.eclipse.xsd</groupId>
<artifactId>xsd</artifactId>
<version>2.1.1</version>
</dependency>
<dependency>
<groupId>org.eclipse.emf</groupId>
<artifactId>ecore</artifactId>
<version>2.1.0</version>
</dependency>
<dependency>
<groupId>org.eclipse.emf</groupId>
<artifactId>common</artifactId>
<version>2.1.0</version>
</dependency>
The code compiles just fine, but produces a RuntimeException at execution time:
java.lang.RuntimeException:
Cannot create a resource for 'my.xsd'; a registered resource factory is needed
at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResource(ResourceSetImpl.java:346)
I found some resource factory implementations in org.eclipse.emf.ecore.xmi, but AFAIK there's only a xmi snapshot in the public Maven repo, which has a dependency on org.eclipse.core.runtime.. which is not what I want.
Can anyone help?
回答1:
Try adding this code before creating your ResourceSetImpl:
import org.eclipse.xsd.util.XSDResourceFactoryImpl;
Resource.Factory.Registry reg = Resource.Factory.Registry.INSTANCE;
java.util.Map m = reg.getExtensionToFactoryMap();
m.put("xsd", new XSDResourceFactoryImpl());
That should create the registry and factory that you need to accomplish what you are trying to do.
来源:https://stackoverflow.com/questions/533573/analyzing-xml-schemas-using-org-eclipse-xsd-and-maven2