Added Model Migration Loader for old SGraph models

plugins/org.yakindu.sct.model.sgraph/src/org/yakindu/sct/model/sgraph/resource/SGraphInjectMembersResource.java

@@ -25,6 +25,7 @@ import org.eclipse.emf.common.util.URI;
 import org.eclipse.emf.ecore.EObject;
 import org.eclipse.emf.ecore.EStructuralFeature;
 import org.eclipse.emf.ecore.util.EcoreUtil;
+import org.eclipse.emf.ecore.xmi.XMLLoad;
 import org.eclipse.xtext.naming.IQualifiedNameConverter;
 import org.eclipse.xtext.naming.IQualifiedNameProvider;
 import org.eclipse.xtext.resource.IEObjectDescription;
@@ -61,6 +62,10 @@ public class SGraphInjectMembersResource extends InjectMembersResource {
 		super(uri);
 	}
 
+	protected XMLLoad createXMLLoad() {
+		return new SGraphLoad(createXMLHelper());
+	}
+
 	@Override
 	public void doLoad(InputStream inputStream, Map<?, ?> options)
 			throws IOException {

plugins/org.yakindu.sct.model.sgraph/src/org/yakindu/sct/model/sgraph/resource/SGraphLoad.java

@@ -0,0 +1,76 @@
+package org.yakindu.sct.model.sgraph.resource;
+
+import java.io.BufferedInputStream;
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Map;
+
+import org.eclipse.core.resources.IFile;
+import org.eclipse.emf.ecore.xmi.XMLHelper;
+import org.eclipse.emf.ecore.xmi.XMLResource;
+import org.eclipse.emf.workspace.util.WorkspaceSynchronizer;
+import org.eclipse.gmf.runtime.emf.core.resources.GMFLoad;
+
+/**
+ * 
+ * @author andreas muelder - Initial contribution and API
+ * 
+ */
+public class SGraphLoad extends GMFLoad {
+
+	private static final String NS_URI_TO_MIGRATE = "http://www.yakindu.org/sct/2.0.0";
+
+	public SGraphLoad(XMLHelper helper) {
+		super(helper);
+	}
+
+	@Override
+	public void load(XMLResource r, InputStream s,
+			@SuppressWarnings("rawtypes") Map o) throws IOException {
+		IFile file = WorkspaceSynchronizer.getFile(r);
+		String osString = file.getLocation().makeAbsolute().toOSString();
+		String filecontent = readFileAsString(osString);
+		// TODO: on check the first line for old ns uri, not neccessary to read
+		// the whole file content
+		if (filecontent.contains(NS_URI_TO_MIGRATE)) {
+			filecontent = migratePreM10Models(filecontent);
+			BufferedWriter writer = new BufferedWriter(new FileWriter(osString));
+			writer.write(filecontent);
+			writer.flush();
+			writer.close();
+		}
+		super.load(r, s, o);
+	}
+
+	/**
+	 * Migrate the following Model changes:
+	 * 
+	 * <pre>
+	 * 		1. NS URI changed from http://www.yakindu.org/sct/2.0.0 to  http://www.yakindu.org/sct/sgraph/2.0.0
+	 * 		2. State->subRegions renamed to State->regions
+	 * 		3. ExpressionElement#expression renamed to SpecificationElement.specification
+	 * 		4. Scopes, triggers, effects are transient now
+	 * </pre>
+	 * 
+	 */
+	private String migratePreM10Models(String content) {
+		content = content.replace(NS_URI_TO_MIGRATE,
+				"http://www.yakindu.org/sct/sgraph/2.0.0");
+		content = content.replaceAll("expression=\"", "specification=\"");
+		content = content.replaceAll("<subRegions", "<regions");
+		content = content.replaceAll(" </subRegions", "</regions");
+		return content;
+	}
+
+	private String readFileAsString(String filePath) throws java.io.IOException {
+		byte[] buffer = new byte[(int) new File(filePath).length()];
+		BufferedInputStream f = new BufferedInputStream(new FileInputStream(
+				filePath));
+		f.read(buffer);
+		return new String(buffer);
+	}
+}