source: default/trunk/de.ugoe.cs.swe.bnftools.ebnf.ui/src/de/ugoe/cs/swe/bnftools/utils/URIFragmentResolver.java

package de.ugoe.cs.swe.bnftools.utils;

import org.eclipse.emf.ecore.EObject;
import org.eclipse.xtext.parsetree.CompositeNode;
import org.eclipse.xtext.parsetree.NodeAdapter;
import org.eclipse.xtext.parsetree.NodeUtil;
import org.eclipse.xtext.resource.XtextResource;
import org.eclipse.xtext.util.concurrent.IUnitOfWork;

public class URIFragmentResolver implements
                IUnitOfWork<CompositeNode, XtextResource> {
        private String uriFragment;

        public URIFragmentResolver(String uriFragment) {
                this.uriFragment = uriFragment;
        }

        public CompositeNode exec(XtextResource state) throws Exception {
                EObject o = state.getEObject(uriFragment);
                
                if (o == null)
                        return null;
                
                NodeAdapter node = NodeUtil.getNodeAdapter(o);

                return node.getParserNode();

        }
}