Fixes #919

server/repo/repository-server/src/main/java/org/eclipse/vorto/repository/core/impl/JcrModelRepository.java

@@ -21,7 +21,6 @@
 import java.util.Iterator;
 import java.util.LinkedList;
 import java.util.List;
-import java.util.Optional;
 import java.util.UUID;
 
 import javax.annotation.PostConstruct;
@@ -128,7 +127,7 @@ public List<ModelInfo> search(final String expression) {
 			throw new RuntimeException("Could not create query manager", e);
 		}
 	}
-	
+
 	private ModelInfo createMinimalModelInfo(Node node) throws RepositoryException {
 		ModelInfo resource = new ModelInfo(ModelIdHelper.fromPath(node.getParent().getPath()),
 				ModelType.valueOf(node.getProperty("vorto:type").getString()));
@@ -138,12 +137,12 @@ private ModelInfo createMinimalModelInfo(Node node) throws RepositoryException {
 		if (node.hasProperty("vorto:author")) {
 			resource.setAuthor(node.getProperty("vorto:author").getString());
 		}
-		
+
 		NodeIterator imageNodeIterator = node.getParent().getNodes("img.png*");
 		if (imageNodeIterator.hasNext()) {
 			resource.setHasImage(true);
 		}
-		
+
 		return resource;
 	}
 
@@ -176,7 +175,7 @@ private ModelInfo createModelResource(Node node) throws RepositoryException {
 			Node referencedByFileNode = prop.getParent();
 			final ModelId referencedById = ModelIdHelper.fromPath(referencedByFileNode.getParent().getPath());
 			resource.getReferencedBy().add(referencedById);
-			
+
 			if (referencedByFileNode.getName().endsWith(ModelType.Mapping.getExtension())) {
 				ModelEMFResource emfResource = getEMFResource(referencedById);
 				resource.addPlatformMapping(emfResource.getTargetPlatform(), referencedById);
@@ -377,7 +376,7 @@ private boolean isTargetPlatformMapping(ModelInfo model, String targetPlatform)
 		}
 	}
 
-	private ModelEMFResource getEMFResource(ModelId modelId) {
+	public ModelEMFResource getEMFResource(ModelId modelId) {
 		try {
 			ModelIdHelper modelIdHelper = new ModelIdHelper(modelId);
 
@@ -462,15 +461,30 @@ public ModelInfo updateMeta(ModelInfo model) {
 			Node fileNode = folderNode.getNodes("*.type | *.fbmodel | *.infomodel | *.mapping").hasNext()
 					? folderNode.getNodes("*.type | *.fbmodel | *.infomodel | *.mapping").nextNode() : null;
 			fileNode.setProperty("vorto:author", model.getAuthor());
-			
+
 			session.save();
-			
+
 			return model;
 		} catch (RepositoryException e) {
 			throw new FatalModelRepositoryException("Problem occured removing the model", e);
 		}
 	}
 
+	public void saveModel(ModelEMFResource resource) {
+		try {
+			Node folderNode = createNodeForModelId(resource.getId());
+			Node fileNode = folderNode.getNodes("*.type | *.fbmodel | *.infomodel | *.mapping").hasNext()
+					? folderNode.getNodes("*.type | *.fbmodel | *.infomodel | *.mapping").nextNode() : null;
+			Node contentNode = fileNode.getNode("jcr:content");
+			Binary binary = session.getValueFactory()
+					.createBinary(new ByteArrayInputStream(resource.toDSL()));
+			contentNode.setProperty("jcr:data", binary);
+			session.save();
+		} catch (Exception e) {
+			throw new FatalModelRepositoryException("Problem occured removing the model", e);
+		}
+	}
+
 	public ModelSearchUtil getModelSearchUtil() {
 		return modelSearchUtil;
 	}

server/repo/repository-server/src/main/java/org/eclipse/vorto/repository/upgrade/AbstractUpgradeTask.java

@@ -0,0 +1,43 @@
+/**
+ * Copyright (c) 2015-2018 Bosch Software Innovations GmbH and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * and Eclipse Distribution License v1.0 which accompany this distribution.
+ *
+ * The Eclipse Public License is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ * The Eclipse Distribution License is available at
+ * http://www.eclipse.org/org/documents/edl-v10.php.
+ *
+ * Contributors:
+ * Bosch Software Innovations GmbH - Please refer to git log
+ */
+package org.eclipse.vorto.repository.upgrade;
+
+import org.eclipse.vorto.repository.api.ModelId;
+import org.eclipse.vorto.repository.core.IModelRepository;
+import org.eclipse.vorto.repository.core.impl.JcrModelRepository;
+import org.eclipse.vorto.repository.core.impl.ModelEMFResource;
+
+public abstract class AbstractUpgradeTask implements IUpgradeTask {
+
+	private IModelRepository modelRepository;
+
+	public AbstractUpgradeTask(IModelRepository repository) {
+		this.modelRepository = repository;
+	}
+
+	protected IModelRepository getModelRepository() {
+		return modelRepository;
+	}
+
+	protected ModelEMFResource getModel(ModelId modelId) {
+		return ((JcrModelRepository)modelRepository).getEMFResource(modelId);
+	}
+
+	protected void saveModel(ModelEMFResource resource) {
+		((JcrModelRepository)modelRepository).saveModel(resource);
+	}
+
+
+}

server/repo/repository-server/src/main/java/org/eclipse/vorto/repository/upgrade/IUpgradeService.java

@@ -0,0 +1,20 @@
+/**
+ * Copyright (c) 2015-2018 Bosch Software Innovations GmbH and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * and Eclipse Distribution License v1.0 which accompany this distribution.
+ *
+ * The Eclipse Public License is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ * The Eclipse Distribution License is available at
+ * http://www.eclipse.org/org/documents/edl-v10.php.
+ *
+ * Contributors:
+ * Bosch Software Innovations GmbH - Please refer to git log
+ */
+package org.eclipse.vorto.repository.upgrade;
+
+public interface IUpgradeService {
+
+	void installUpgrades();
+}

server/repo/repository-server/src/main/java/org/eclipse/vorto/repository/upgrade/IUpgradeTask.java

@@ -0,0 +1,45 @@
+/**
+ * Copyright (c) 2015-2018 Bosch Software Innovations GmbH and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * and Eclipse Distribution License v1.0 which accompany this distribution.
+ *
+ * The Eclipse Public License is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ * The Eclipse Distribution License is available at
+ * http://www.eclipse.org/org/documents/edl-v10.php.
+ *
+ * Contributors:
+ * Bosch Software Innovations GmbH - Please refer to git log
+ */
+package org.eclipse.vorto.repository.upgrade;
+
+/**
+ * An UpgradeTask is executed when the repository is started up.
+ *
+ */
+public interface IUpgradeTask {
+
+	/**
+	 * Performs the actual upgrade task 
+	 * @throws UpgradeProblem
+	 */
+	void doUpgrade() throws UpgradeProblem;
+
+	/**
+	 * @return a short description of the task being performed
+	 */
+	String getShortDescription();
+
+	public class UpgradeProblem extends RuntimeException {
+
+		/**
+		 * 
+		 */
+		private static final long serialVersionUID = 1L;
+
+		public UpgradeProblem(String msg, Throwable t) {
+			super(msg, t);
+		}
+	}
+}

server/repo/repository-server/src/main/java/org/eclipse/vorto/repository/upgrade/impl/DefaultUpgradeService.java

@@ -0,0 +1,49 @@
+/**
+ * Copyright (c) 2015-2018 Bosch Software Innovations GmbH and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * and Eclipse Distribution License v1.0 which accompany this distribution.
+ *
+ * The Eclipse Public License is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ * The Eclipse Distribution License is available at
+ * http://www.eclipse.org/org/documents/edl-v10.php.
+ *
+ * Contributors:
+ * Bosch Software Innovations GmbH - Please refer to git log
+ */
+package org.eclipse.vorto.repository.upgrade.impl;
+
+import java.util.Arrays;
+import java.util.List;
+
+import org.eclipse.vorto.repository.upgrade.IUpgradeService;
+import org.eclipse.vorto.repository.upgrade.IUpgradeTask;
+import org.eclipse.vorto.repository.upgrade.IUpgradeTask.UpgradeProblem;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class DefaultUpgradeService implements IUpgradeService {
+
+	private List<IUpgradeTask> tasks;
+
+	private static final Logger logger = LoggerFactory.getLogger(DefaultUpgradeService.class);
+
+	@Override
+	public void installUpgrades() {
+		logger.info("Performing upgrade to the Vorto Repository and its content...");
+		for (IUpgradeTask task : tasks) {
+			logger.info("Executing task - "+task.getShortDescription());
+			try {
+				task.doUpgrade();
+			} catch (UpgradeProblem problem ) {
+				logger.error("Problem executing upgrade task",problem);
+			}
+		}
+	}
+
+	public void addTasks(IUpgradeTask...tasks) {
+		this.tasks = Arrays.asList(tasks);
+	}
+
+}

server/repo/repository-server/src/test/java/org/eclipse/vorto/repository/upgrade/UpgradeTaskTest.java

@@ -0,0 +1,70 @@
+/**
+ * Copyright (c) 2015-2018 Bosch Software Innovations GmbH and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * and Eclipse Distribution License v1.0 which accompany this distribution.
+ *
+ * The Eclipse Public License is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ * The Eclipse Distribution License is available at
+ * http://www.eclipse.org/org/documents/edl-v10.php.
+ *
+ * Contributors:
+ * Bosch Software Innovations GmbH - Please refer to git log
+ */
+package org.eclipse.vorto.repository.upgrade;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+
+import org.eclipse.vorto.repository.AbstractIntegrationTest;
+import org.eclipse.vorto.repository.api.ModelInfo;
+import org.eclipse.vorto.repository.core.IModelRepository;
+import org.eclipse.vorto.repository.core.impl.ModelEMFResource;
+import org.eclipse.vorto.repository.upgrade.impl.DefaultUpgradeService;
+import org.junit.Test;
+
+public class UpgradeTaskTest extends AbstractIntegrationTest {
+
+	@Test
+	public void testUpgradeFileContent() {
+		checkinModel("Color.type", "alex");
+		ModelEMFResource resource = (ModelEMFResource)modelRepository.getEMFResource(modelRepository.search("*").get(0).getId());
+		assertNull(resource.getModel().getCategory());
+		DefaultUpgradeService service = new DefaultUpgradeService();
+		service.addTasks(new AddCategoryUpgradeTask(this.modelRepository));
+
+		service.installUpgrades();
+
+		resource = (ModelEMFResource)modelRepository.getEMFResource(modelRepository.search("*").get(0).getId());
+		assertEquals("iot",resource.getModel().getCategory());
+
+	}
+
+
+	private class AddCategoryUpgradeTask extends AbstractUpgradeTask {
+
+		public AddCategoryUpgradeTask(IModelRepository repo) {
+			super(repo);
+		}
+
+		@Override
+		public void doUpgrade() throws UpgradeProblem {
+			for (ModelInfo model : modelRepository.search("*")) {
+				ModelEMFResource resource = getModel(model.getId());
+				if (resource.getModel().getCategory() == null) {
+					resource.getModel().setCategory("iot");
+					modelRepository.saveModel(resource);
+				}
+
+			}
+		}
+
+		@Override
+		public String getShortDescription() {
+			return "Adding category 'iot' to models without category.";
+		}
+
+	}
+
+}

server/repo/repository-web/src/main/java/org/eclipse/vorto/repository/web/config/RepositoryConfiguration.java

@@ -14,7 +14,10 @@
  */
 package org.eclipse.vorto.repository.web.config;
 
+import org.eclipse.vorto.repository.core.IModelRepository;
 import org.eclipse.vorto.repository.sso.boschid.EidpUtils;
+import org.eclipse.vorto.repository.upgrade.IUpgradeService;
+import org.eclipse.vorto.repository.upgrade.impl.DefaultUpgradeService;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
@@ -52,4 +55,13 @@ public AccessTokenProvider accessTokenProvider() {
 			return EidpUtils.accessTokenProvider();
 		}
 	}
+
+	@Bean
+	public IUpgradeService upgradeService(IModelRepository modelRepository) {
+		DefaultUpgradeService upgradeService = new DefaultUpgradeService();
+		/*
+		 * ADD UPGRADE TASKS HERE
+		 */
+		return upgradeService;
+	}
 }