Architecture:
	(components+=Component)+
	(connectors+=Connector)*;

Component:
	'component' name=ID ':' namespace=PackageName;

Connector:
	from=[Component|ID]( '=>' to=[Component|ID]);

architecture.getConnectors().get(0).getFrom()

new org.eclipse.emf.mwe.utils.StandaloneSetup().setPlatformUri("../");
Injector injector = new ArchnemesisStandaloneSetup().createInjectorAndDoEMFRegistration();
resourceSet = injector.getInstance(XtextResourceSet.class);
resourceSet.addLoadOption(XtextResource.OPTION_RESOLVE_ALL, Boolean.TRUE);

...

Resource resource = resourceSet.createResource(URI.createURI("dummy:/inmemory.chralx"));
resource.load(in, resourceSet.getLoadOptions());
linker.linkModel(resource.getContents().get(0), consumer);
return resource.getContents().get(0);

architecture.getConnectors().get(0).getFrom()

grammar de.fu_berlin.inf.archnemesis.Archnemesis with org.eclipse.xtext.common.Terminals

generate archnemesis "http //www.fu_berlin.de/inf/archnemesis/Archnemesis"

Architecture:
	rootComponent=RootComponent
	(components+=Component)+
	(connectors+=Connector)*;

Element:
	Component | Connector | Constraint;

RootComponent:
	'root' name=ID ':' namespace=PackageName;

Component:
	'component' name=ID ':' namespace=PackageName;

Connector:
	from=[Component] '=>' to=[Component]
;

root saros: de.fu_berlin.dpp

component session_management: de.fu_berlin.dpp.project

component operational_transformation: de.fu_berlin.dpp.concurrent

component network: de.fu_berlin.dpp.net 

session_management => operational_transformation
//session_management => network
//invitation => network

	public class XtextParser {

		// @Inject
		// private IParser parser;
		//
		// @Inject
		// private ILinker linker;

		// @Inject
		private XtextResourceSet resourceSet;

		public XtextParser() {
			setupParser();
		}

		private void setupParser() {

			new org.eclipse.emf.mwe.utils.StandaloneSetup()
					.setPlatformUri("../");
			Injector injector = new ArchnemesisStandaloneSetup()
					.createInjectorAndDoEMFRegistration();
			resourceSet = injector.getInstance(XtextResourceSet.class);
		}

		/**
		 * Parses data provided by an input reader using Xtext and returns the
		 * root node of the resulting object tree.
		 * 
		 * @param reader
		 *            Input reader
		 * @return root object node
		 * @throws IOException
		 *             when errors occur during the parsing process
		 */
		public EObject parse(Reader reader) throws IOException {
			IParseResult result = parser.parse(reader);

			if (result.hasSyntaxErrors()) {
				throw new ParseException(
						"Provided input contains syntax errors.");
			}

			return result.getRootASTElement();
		}

		public EObject parse2(InputStream in) throws IOException {
			Resource resource = resourceSet.createResource(URI
					.createURI("dummy:/inmemory.chralx"));
			// EcoreUtil.resolveAll(resourceSet);
			resource.load(in, resourceSet.getLoadOptions());
			IDiagnosticConsumer consumer = new IDiagnosticConsumer() {

				@Override
				public void consume(Diagnostic diagnostic, Severity severity) {
					// TODO Auto-generated method stub

				}

				@Override
				public boolean hasConsumedDiagnostics(Severity severity) {
					// TODO Auto-generated method stub
					return true;
				}

			};

			EcoreUtil.resolveAll(resourceSet);
			return resource.getContents().get(0);
		}
	}

        @Override
	public Object visit(ASTPackageDeclaration node, Object data) {

		File chralx = new File(getChralx((RuleContext) data));

		Architecture architecture = null;

		try {
			architecture = parseChralx2(new FileInputStream(chralx));
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

		Map<Component, Set<Component>> accessMap = new HashMap<Component, Set<Component>>();

		// init
		for (Component c : architecture.getComponents()) {
			accessMap.put(c, new HashSet<Component>());
		}
		// create mapping of component to allowed access
		for (Connector c : architecture.getConnectors()) {
			Component from = c.getFrom();
			Component to = c.getTo();
			EList<EObject> as = from.eCrossReferences();
			accessMap.get(from).add(to);

Architecture parseChralx2(InputStream chralx) throws IOException {
		XtextParser p = new XtextParser();
		return (Architecture) p.parse2(chralx);
	}

public EObject parse2(InputStream in) throws IOException {
			Resource resource = resourceSet.createResource(URI
					.createURI("dummy:/inmemory.chralx"));
			// EcoreUtil.resolveAll(resourceSet);
			resource.load(in, resourceSet.getLoadOptions());
			IDiagnosticConsumer consumer = new IDiagnosticConsumer() {

				@Override
				public void consume(Diagnostic diagnostic, Severity severity) {
					// TODO Auto-generated method stub

				}

				@Override
				public boolean hasConsumedDiagnostics(Severity severity) {
					// TODO Auto-generated method stub
					return true;
				}

			};

			EcoreUtil.resolveAll(resourceSet);
			return resource.getContents().get(0);
		}