Java URI.fragment方法代码示例

import org.eclipse.emf.common.util.URI; //导入方法依赖的package包/类
static String simpleURIString(URI uri) {
	if (uri == null)
		return "!!null!!";
	return uri.lastSegment() + "#" + uri.fragment();
}
 

import org.eclipse.emf.common.util.URI; //导入方法依赖的package包/类
/**
 * Invoked from {@link ProxyResolvingEObjectImpl#eResolveProxy(InternalEObject)} whenever an EMF proxy inside an
 * N4JSResource is being resolved. The receiving resource is the resource containing the proxy, not necessarily the
 * resource the proxy points to.
 *
 * @param proxy
 *            the proxy to resolve.
 * @param objectContext
 *            the {@code EObject} contained in this resource that holds the given proxy.
 */
@Override
public EObject doResolveProxy(InternalEObject proxy, EObject objectContext) {
	// step 1: trigger post processing of the resource containing 'proxy' iff it is the first proxy being resolved
	// (if another proxy has been resolved before, post processing will already be running/completed, and in that
	// case the next line will simply do nothing, cf. #performPostProcessing())
	this.performPostProcessing();
	// step 2: now turn to resolving the proxy at hand
	final URI targetUri = proxy.eProxyURI();
	final boolean isLazyLinkingProxy = getEncoder().isCrossLinkFragment(this, targetUri.fragment());
	if (!isLazyLinkingProxy) {
		// we have an ordinary EMF proxy (not one of Xtext's lazy linking proxies) ...
		final ResourceSet resSet = getResourceSet();
		final URI targetResourceUri = targetUri.trimFragment();
		final String targetFileExt = targetResourceUri.fileExtension();
		if (N4JSGlobals.N4JS_FILE_EXTENSION.equals(targetFileExt)
				|| N4JSGlobals.N4JSD_FILE_EXTENSION.equals(targetFileExt)
				|| N4JSGlobals.N4JSX_FILE_EXTENSION.equals(targetFileExt)) {

			// proxy is pointing into an .n4js or .n4jsd file ...
			// check if we can work with the TModule from the index or if it is mandatory to load from source
			final boolean canLoadFromDescription = !targetUri.fragment().startsWith("/0")
					&& canLoadFromDescriptionHelper.canLoadFromDescription(targetResourceUri, getResourceSet());
			if (canLoadFromDescription) {

				final String targetFragment = targetUri.fragment();
				final Resource targetResource = resSet.getResource(targetResourceUri, false);

				// special handling #1:
				// if targetResource is not loaded yet, try to load it from index first
				if (targetResource == null) {
					if (targetFragment != null
							&& (targetFragment.equals("/1") || targetFragment.startsWith("/1/"))) {
						// uri points to a TModule element in a resource not yet contained in our resource set
						// --> try to load target resource from index
						final IResourceDescriptions index = n4jsCore.getXtextIndex(resSet);
						final IResourceDescription resDesc = index.getResourceDescription(targetResourceUri);
						if (resDesc != null) {
							// next line will add the new resource to resSet.resources
							n4jsCore.loadModuleFromIndex(resSet, resDesc, false);
						}
					}
				}
			}
			// standard behavior:
			// obtain target EObject from targetResource in the usual way
			// (might load targetResource from disk if it wasn't loaded from index above)
			final EObject targetObject = resSet.getEObject(targetUri, true);
			// special handling #2:
			// if targetResource exists, make sure it is post-processed *iff* this resource is post-processed
			// (only relevant in case targetResource wasn't loaded from index, because after loading from index it
			// is always marked as fullyPostProcessed==true)
			if (targetObject != null && (this.isPostProcessing() || this.isFullyProcessed())) {
				final Resource targetResource2 = targetObject.eResource();
				if (targetResource2 instanceof N4JSResource) {
					// no harm done, if already running/completed
					((N4JSResource) targetResource2).performPostProcessing();
				}
			}
			// return resolved target object
			return targetObject != null ? targetObject : proxy; // important: return proxy itself if unresolvable!
		}
	}
	// we will get here if
	// a) we have an Xtext lazy linking proxy or
	// b) targetUri points to an n4ts resource or some other, non-N4JS resource
	// --> above special handling not required, so just apply EMF's default resolution behavior
	return EcoreUtil.resolve(proxy, this);
}