Creating resource in the proper way

git-svn-id: https://svn.d4science.research-infrastructures.eu/gcube/trunk/information-system/resource-registry@131287 82a268e6-3cf1-43bd-a215-b396298e98cf

.settings/org.eclipse.wst.common.component

@@ -4,13 +4,13 @@
         <wb-resource deploy-path="/" source-path="/src/main/webapp" tag="defaultRootSource"/>
         <wb-resource deploy-path="/WEB-INF/classes" source-path="/src/main/java"/>
         <wb-resource deploy-path="/WEB-INF/classes" source-path="/src/main/resources"/>
-        <dependent-module archiveName="resource-registry-api-1.0.0-SNAPSHOT.jar" deploy-path="/WEB-INF/lib" handle="module:/resource/resource-registry-api/resource-registry-api">
+        <dependent-module archiveName="resource-registry-api-1.1.0-SNAPSHOT.jar" deploy-path="/WEB-INF/lib" handle="module:/resource/resource-registry-api/resource-registry-api">
             <dependency-type>uses</dependency-type>
         </dependent-module>
         <dependent-module archiveName="information-system-model-1.1.0-SNAPSHOT.jar" deploy-path="/WEB-INF/lib" handle="module:/resource/information-system-model/information-system-model">
             <dependency-type>uses</dependency-type>
         </dependent-module>
-        <dependent-module archiveName="information-system-model-orientdb-binding-1.0.0-SNAPSHOT.jar" deploy-path="/WEB-INF/lib" handle="module:/resource/information-system-model-orientdb-binding/information-system-model-orientdb-binding">
+        <dependent-module archiveName="information-system-model-orientdb-binding-1.1.0-SNAPSHOT.jar" deploy-path="/WEB-INF/lib" handle="module:/resource/information-system-model-orientdb-binding/information-system-model-orientdb-binding">
             <dependency-type>uses</dependency-type>
         </dependent-module>
         <property name="context-root" value="resource-registry"/>

pom.xml

@@ -8,7 +8,7 @@
 	</parent>
 	<groupId>org.gcube.information-system</groupId>
 	<artifactId>resource-registry</artifactId>
-	<version>1.0.0-SNAPSHOT</version>
+	<version>1.1.0-SNAPSHOT</version>
 	<name>Resource Registry</name>
 	<description>Resource Registry</description>
 	<packaging>war</packaging>

src/main/java/org/gcube/informationsystem/resourceregistry/resources/impl/EntityManagementImpl.java

@@ -4,13 +4,21 @@
 package org.gcube.informationsystem.resourceregistry.resources.impl;
 
 import java.io.IOException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.HashSet;
 import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Set;
 
+import org.gcube.informationsystem.impl.utils.Entities;
+import org.gcube.informationsystem.model.embedded.Embedded;
 import org.gcube.informationsystem.model.entity.Entity;
 import org.gcube.informationsystem.model.entity.Facet;
 import org.gcube.informationsystem.model.entity.Resource;
+import org.gcube.informationsystem.model.orientdb.impl.embedded.Header;
 import org.gcube.informationsystem.model.relation.ConsistsOf;
 import org.gcube.informationsystem.model.relation.IsRelatedTo;
 import org.gcube.informationsystem.model.relation.Relation;
@@ -26,9 +34,12 @@ import org.gcube.informationsystem.resourceregistry.resources.utils.Utility;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import com.fasterxml.jackson.core.JsonParseException;
 import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.JsonMappingException;
 import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.JsonNodeType;
 import com.tinkerpop.blueprints.Edge;
 import com.tinkerpop.blueprints.Vertex;
 import com.tinkerpop.blueprints.impls.orient.OrientEdge;
@@ -94,14 +105,260 @@ public class EntityManagementImpl implements EntityManagement {
 
 	}
 
-	public String createVertexEntity(String entityType,
-			Class<? extends Entity> entity, String jsonRepresentation)
-			throws ResourceRegistryException {
-		OrientGraph orientGraph = null;
+	private static String lowerCaseFirstCharacter(String string) {
+		return string.substring(0, 1).toLowerCase() + string.substring(1);
+	}
+
+	private static String getClassProperty(JsonNode jsonNode) {
+		if (jsonNode.has(Entities.CLASS_PROPERTY)) {
+			return jsonNode.get(Entities.CLASS_PROPERTY).asText();
+		}
+		return null;
+	}
+
+	private static Header getHeader(JsonNode jsonNode)
+			throws JsonParseException, JsonMappingException, IOException {
+		if (jsonNode.has(Resource.HEADER_PROPERTY)) {
+			JsonNode header = jsonNode.get(Resource.HEADER_PROPERTY);
+			if (header.isNull()) {
+				return null;
+			}
+			ObjectMapper mapper = new ObjectMapper();
+			return mapper.readValue(header.toString(), Header.class);
+		}
+		return null;
+	}
+
+	private static Entity checkTypeAndGetHeader(JsonNode jsonNode) throws ResourceRegistryException {
+		if(jsonNode.has(Entities.CLASS_PROPERTY)){
+			// Complex type
+			String type = getClassProperty(jsonNode);
+			
+			
+			SchemaManagementImpl schemaManagement = new SchemaManagementImpl();
+			try {
+				schemaManagement.getTypeSchema(type, Embedded.NAME);
+			} catch (SchemaNotFoundException e) {
+				throw e;
+			}
+			boolean validType = false;
+			boolean notEmbedded = false;
+			
+			
+			
+			// Header can be ignored or managed. Actually is managed.
+			if(validType && notEmbedded){
+				Header header = null;
+				try {
+					header = getHeader(jsonNode);
+				} catch (Exception e){
+					logger.warn("An invalid Header has been provided. An embedded object cannot have an Header.  It will be ignored.");
+					//throw new ResourceRegistryException("An embedded object cannot have an Header");
+				}
+				
+				if(header!=null){
+					logger.warn("An embedded object cannot have an Header. It will be ignored.");
+					//throw new ResourceRegistryException("An embedded object cannot have an Header");
+				}
+			}
+		}
+		
+		return null;
+	}
+	
+	public static Object getObejctFromElement(JsonNode value) throws ResourceRegistryException {
+		JsonNodeType jsonNodeType = value.getNodeType();
+		switch (jsonNodeType) {
+			case OBJECT:
+				// TODO
+				checkTypeAndGetHeader(value);
+				return null;
+		
+			case ARRAY:
+				List<Object> array = new ArrayList<>();
+				Iterator<JsonNode> arrayElement = value.elements();
+				while(arrayElement.hasNext()){
+					JsonNode arrayNode = arrayElement.next();
+					Object objectNode = getObejctFromElement(arrayNode);
+					if(objectNode!=null){
+						array.add(objectNode);
+					}
+				}
+				return array;
+				
+			case BINARY:
+				break;
+				
+			case BOOLEAN:
+				return value.asBoolean();
+			
+			case NULL:
+				break;
+			
+			case NUMBER:
+				if(value.isDouble() || value.isFloat()){
+					return value.asDouble();
+				}
+				if(value.isBigInteger() || value.isShort() || value.isInt()){
+					return value.asInt();
+				}
+				
+				if(value.isLong()){
+					return value.asLong();
+				}
+				break;
+				
+			case STRING:
+				return value.asText();
+			
+			case MISSING:
+				break;
+				
+			case POJO:
+				break;
+				
+			default:
+				break;
+		}
+		
+		return null;
+	}
+	
+	
+	public static Map<String, Object> getPropertyMap(JsonNode jsonNode, 
+			Set<String> ignoreKeys) throws JsonProcessingException, IOException{
+		
+		Map<String, Object> map = new HashMap<>();
+				
+		Iterator<Entry<String, JsonNode>> fields = jsonNode.fields();
+		while (fields.hasNext()) {
+			Entry<String, JsonNode> entry = fields.next();
+			
+			String key = entry.getKey();
+			if (key.compareTo(Relation.HEADER_PROPERTY) == 0) {
+				continue;
+			}
+			if (key.startsWith("@") || key.startsWith("_")) {
+				continue;
+			}
+			if (ignoreKeys.contains(key)) {
+				continue;
+			}
+			
+			JsonNode value = entry.getValue();
+			Object object = null;
+			try {
+				object = getObejctFromElement(value);
+				if(object!=null){
+					map.put(key, object);
+				}
+			} catch (ResourceRegistryException e) {
+				logger.warn("An invalidy property has been provided. It will be ignored.");
+			}
+			
+			
+			
+		}
+		
+		return map;
+	}
+	
+	private void createRelation(OrientGraph orientGraph, Vertex resource, JsonNode relationArray,
+			@SuppressWarnings("rawtypes") Class<? extends Relation> relation) throws FacetNotFoundException,
+			ResourceNotFoundException, ResourceRegistryException {
+		
+		Iterator<JsonNode> iterator = relationArray.elements();
+		while (iterator.hasNext()) {
+			JsonNode node = iterator.next();
+
+			/* Managing Target */
+			JsonNode target = node.get(Relation.TARGET_PROPERTY);
+			
+			Header targetHeader = null;
+			try {
+				targetHeader = getHeader(target);
+			} catch (IOException e) {
+				new ResourceRegistryException(e);
+			}
+
+			Class<? extends Entity> targetClass = null;
+			
+			
+			Vertex targetVertex = null;
+			if (targetHeader == null) {
+				if (ConsistsOf.class.isAssignableFrom(relation)) {
+					targetVertex = createVertexEntity(
+							orientGraph, getClassProperty(target), 
+							Facet.class,
+							target.toString(), true);
+					targetClass = Facet.class;
+					targetHeader = targetVertex.getProperty(Facet.HEADER_PROPERTY);
+				} else {
+					String error = String.format(
+							"%s %s must already exist. The UUID must be provided in the %s of %s json respresentation", 
+							Relation.TARGET_PROPERTY, Resource.NAME, 
+							Header.NAME, IsRelatedTo.NAME);
+					logger.error(error);
+					throw new ResourceRegistryException(error);
+				}
+			}else {
+				// The target Entity was already created we just need to create
+				// the right relation
+				
+				if(ConsistsOf.class.isAssignableFrom(relation)) {
+					targetClass = Facet.class;
+				}else if(IsRelatedTo.class.isAssignableFrom(relation)){
+					targetClass = Resource.class;
+				}else{
+					String error = String.format(
+							"%s Unsupported %s creation", relation.toString(),
+							Relation.NAME);
+					logger.error(error);
+					throw new ResourceRegistryException(error);
+				}
+				
+				String targetUUID = targetHeader.getUUID().toString();
+				String entityType = getClassProperty(target);
+				
+				targetVertex = getEntity(orientGraph, targetUUID, entityType, targetClass);
+			}
+			
+			String relationType = getClassProperty(node);
+			
+			
+			Set<String> ignoreKeys = new HashSet<>();
+			ignoreKeys.add(Relation.TARGET_PROPERTY);
+			ignoreKeys.add(Relation.SOURCE_PROPERTY);
+			
+			Map<String, Object> edgeProperties = null;
+			try {
+				edgeProperties = getPropertyMap(node, ignoreKeys);
+			}catch(Exception e){
+				String error = "Error while parsing json to get Relation properties";
+				logger.error(error, e);
+				throw new ResourceRegistryException(error, e);
+			}
+			
+			createEdgeRelation(orientGraph, resource, targetVertex, 
+					relationType, relation, edgeProperties, true);
+
+		}
+	}
+	
+	public Vertex createVertexEntity(String entityType,
+			Class<? extends Entity> entity, String jsonRepresentation,
+			boolean deferredCommit) throws ResourceRegistryException {
+		OrientGraph orientGraph = ContextUtility
+				.getActualSecurityContextGraph(PermissionMode.WRITER);
+		return createVertexEntity(orientGraph, entityType, entity, jsonRepresentation, 
+				deferredCommit);
+	}
+	
+	public Vertex createVertexEntity(OrientGraph orientGraph, String entityType,
+			Class<? extends Entity> entity, String jsonRepresentation,
+			boolean deferredCommit) throws ResourceRegistryException {
 		
 		try {
-			orientGraph = ContextUtility
-					.getActualSecurityContextGraph(PermissionMode.WRITER);
 			
 			SchemaManagementImpl schemaManagement = new SchemaManagementImpl();
 			try {
@@ -114,32 +371,57 @@ public class EntityManagementImpl implements EntityManagement {
 			ObjectMapper mapper = new ObjectMapper();
 			JsonNode jsonNode = mapper.readTree(jsonRepresentation);
 			
-			OrientVertex entityVertex = orientGraph.addVertex("class:"
+			String type = getClassProperty(jsonNode);
+			if (type != null && type.compareTo(entityType) != 0) {
+				String error = String
+						.format("Declared resourceType does not match with json representation %s!=%s",
+								entityType, type);
+				logger.trace(error);
+				throw new ResourceRegistryException(error);
+			}
+
+			OrientVertex vertex = orientGraph.addVertex("class:"
 					+ entityType);
 
+			Header entityHeader = getHeader(jsonNode);
+			if (entityHeader != null) {
+				vertex.setProperty(Entity.HEADER_PROPERTY, entityHeader);
+			} else {
+				entityHeader = HeaderUtility.addHeader(vertex, null);
+			}
+
 			if (Resource.class.isAssignableFrom(entity)) {
-				// TODO
+				// Facet and relation are created in calling method
 			} else {
 				Iterator<Entry<String, JsonNode>> iterator = jsonNode.fields();
 				while (iterator.hasNext()) {
 					Entry<String, JsonNode> entry = iterator.next();
+					if (entry.getKey().compareTo(Facet.HEADER_PROPERTY) == 0) {
+						continue;
+					}
+					if (entry.getKey().startsWith("@")
+							|| entry.getKey().startsWith("_")) {
+						continue;
+					}
 					JsonNode value = entry.getValue();
-					entityVertex.setProperty(entry.getKey(), value.asText());
+					vertex.setProperty(entry.getKey(), value.asText());
 				}
 			}
 
-			HeaderUtility.addHeader(entityVertex, null);
-			ContextUtility.addToActualContext(orientGraph, entityVertex);
+			ContextUtility.addToActualContext(orientGraph, vertex);
 
-			entityVertex.save();
+			vertex.save();
+
+			if (!deferredCommit) {
 				orientGraph.commit();
 
-			logger.trace("Created {} is {} orientVertexToJsonString", Vertex.class.getSimpleName(), 
-					Utility.orientVertexToJsonString((OrientVertex) entityVertex, true));
-			
-			return Utility.orientVertexToJsonString((OrientVertex) entityVertex, false);
-			//return Utility.orientVertexToJsonString((OrientVertex) entityVertex);
+				logger.trace("Created {} is {} orientVertexToJsonString",
+						Vertex.class.getSimpleName(), Utility
+								.orientVertexToJsonString(
+										(OrientVertex) vertex, true));
+			}
 
+			return vertex;
 
 		} catch (Exception e) {
 			if (orientGraph != null) {
@@ -148,17 +430,19 @@ public class EntityManagementImpl implements EntityManagement {
 			throw new ResourceRegistryException("Error Creating " + entityType
 					+ " with " + jsonRepresentation, e.getCause());
 		} finally {
-			if (orientGraph != null) {
+			if (orientGraph != null && !deferredCommit) {
 				orientGraph.shutdown();
 			}
 		}
 	}
 
-	public String createEdgeRelation(String sourceUUID,
-			Class<? extends Entity> sourceClass, String targetUUID,
-			Class<? extends Entity> targetClass, String relationType,
-			String jsonProperties) throws FacetNotFoundException,
-			ResourceNotFoundException, ResourceRegistryException {
+	public Edge createEdgeRelation(
+			String sourceUUID, Class<? extends Entity> sourceClass, 
+			String targetUUID, Class<? extends Entity> targetClass, 
+			String relationType, @SuppressWarnings("rawtypes") Class<? extends Relation> relationBaseClass, 
+			String jsonProperties)
+			throws FacetNotFoundException, ResourceNotFoundException,
+			ResourceRegistryException {
 		OrientGraph orientGraph = null;
 
 		if (relationType == null || relationType.compareTo("") == 0) {
@@ -170,20 +454,63 @@ public class EntityManagementImpl implements EntityManagement {
 			orientGraph = ContextUtility
 					.getActualSecurityContextGraph(PermissionMode.WRITER);
 
-			SchemaManagementImpl schemaManagement = new SchemaManagementImpl();
-			try {
-				schemaManagement.getTypeSchema(relationType, Relation.NAME);
-			} catch (SchemaNotFoundException e) {
-				throw e;
-			}
-
 			Vertex source = getEntity(orientGraph, sourceUUID, null,
 					sourceClass);
 			Vertex target = getEntity(orientGraph, targetUUID, null,
 					targetClass);
 			
-			// TODO Check if in and out types are compatible with the relation
-			// type as defined in relation type
+			Map<String, Object> edgeProperties = new HashMap<>();
+			
+			if (jsonProperties != null && jsonProperties.compareTo("") != 0) {
+				try {
+					Set<String> ignoreKeys = new HashSet<>();
+					ignoreKeys.add(Relation.SOURCE_PROPERTY);
+					ignoreKeys.add(Relation.TARGET_PROPERTY);
+					
+					ObjectMapper mapper = new ObjectMapper();
+					JsonNode jsonNode = mapper.readTree(jsonProperties);
+					
+					edgeProperties = getPropertyMap(jsonNode, ignoreKeys);
+					
+				} catch (Exception e) {
+					new ResourceRegistryException(
+							"Error while setting Relation Properties", e);
+				}
+			}
+			
+			return createEdgeRelation(orientGraph, source, target, 
+					relationType, relationBaseClass, edgeProperties, false);
+			
+		} catch(ResourceNotFoundException rnfe){
+			throw rnfe;
+		} catch (Exception e) {
+			throw new ResourceRegistryException(e);
+		}
+		
+	}
+	
+	public Edge createEdgeRelation(OrientGraph orientGraph, 
+			Vertex source, Vertex target, 
+			String relationType, @SuppressWarnings("rawtypes") Class<? extends Relation> relationBaseClass,
+			Map<String, Object> edgeProperties,
+			boolean deferredCommit) throws ResourceRegistryException {
+		
+
+		try {
+			
+			SchemaManagementImpl schemaManagement = new SchemaManagementImpl();
+			try {
+				schemaManagement.getTypeSchema(relationType, relationBaseClass.getClass().getSimpleName());
+			} catch (SchemaNotFoundException e) {
+				throw e;
+			}
+			
+			if (relationType == null || relationType.compareTo("") == 0) {
+				throw new ResourceRegistryException(Relation.class.getSimpleName()
+						+ " Type cannot be empty or null");
+			}
+			
+			// TODO Check the relation compatibility beetween source and target
 
 			logger.trace("Creating {} ({}) beetween {} -> {}",
 					Relation.class.getSimpleName(), relationType,
@@ -192,43 +519,39 @@ public class EntityManagementImpl implements EntityManagement {
 
 			Edge edge = orientGraph.addEdge(null, source, target, relationType);
 
-			if (jsonProperties != null && jsonProperties.compareTo("") != 0) {
+			for(String key : edgeProperties.keySet()){
 				try {
-					ObjectMapper mapper = new ObjectMapper();
-					JsonNode jsonNode = mapper.readTree(jsonProperties);
+					edge.setProperty(key, edgeProperties.get(key));
+				} catch (Exception e) {
+					String error = String.format("Error while setting property %s : %s", key, edgeProperties.get(key).toString());
+					logger.error(error);
+					throw new ResourceRegistryException(error, e);
+				}
+			}
 					
-					Iterator<Entry<String, JsonNode>> iterator = jsonNode
-							.fields();
-					while (iterator.hasNext()) {
-						Entry<String, JsonNode> entry = iterator.next();
-						try {
-							JsonNode value = entry.getValue();
-							edge.setProperty(entry.getKey(), value.asText());
-						} catch (Exception e) {
-							throw new ResourceRegistryException(
-									"Error while setting property"
-											+ String.valueOf(entry), e);
-						}
-					}
-				} catch (Exception e) {
-					new ResourceRegistryException(
-							"Error while setting Relation Properties", e);
-				}
-			}
 
 			HeaderUtility.addHeader(edge, null);
 			ContextUtility.addToActualContext(orientGraph, edge);
 
 			((OrientEdge) edge).save();
-			orientGraph.commit();
 
-			return Utility.orientEdgeToJsonString((OrientEdge) edge);
-		} catch (ResourceNotFoundException rnfe) {
-			throw rnfe;
+			if (!deferredCommit) {
+				orientGraph.commit();
+			}
+			return edge;
+
+		} catch (ResourceRegistryException rre) {
+			if (orientGraph!=null) {
+				orientGraph.rollback();
+			}
+			throw rre;
 		} catch (Exception e) {
-			throw new ResourceNotFoundException(e.getMessage());
+			if (orientGraph!=null) {
+				orientGraph.rollback();
+			}
+			throw new ResourceRegistryException(e);
 		} finally {
-			if (orientGraph != null) {
+			if (orientGraph!= null && !deferredCommit) {
 				orientGraph.shutdown();
 			}
 		}
@@ -237,7 +560,8 @@ public class EntityManagementImpl implements EntityManagement {
 	@Override
 	public String createFacet(String facetType, String jsonRepresentation)
 			throws ResourceRegistryException {
-		return createVertexEntity(facetType, Facet.class, jsonRepresentation);
+		Vertex vertex = createVertexEntity(facetType, Facet.class, jsonRepresentation, false);
+		return Utility.orientVertexToJsonString((OrientVertex) vertex, false);
 	}
 
 	@Override
@@ -257,7 +581,9 @@ public class EntityManagementImpl implements EntityManagement {
 
 			Vertex facet = getEntity(orientGraph, uuid, facetType, Facet.class);
 
-			logger.trace("{} of type {} with UUID {} is {}", Facet.NAME, facetType, uuid, Utility.orientVertexToJsonString((OrientVertex) facet, true));
+			logger.trace("{} of type {} with UUID {} is {}", Facet.NAME,
+					facetType, uuid, Utility.orientVertexToJsonString(
+							(OrientVertex) facet, true));
 
 			return Utility.orientVertexToJsonString((OrientVertex) facet, true);
 		} catch (FacetNotFoundException fnfe) {
@@ -322,11 +648,12 @@ public class EntityManagementImpl implements EntityManagement {
 			((OrientVertex) facet).save();
 			orientGraph.commit();
 
+			logger.trace("{} with UUID {} has been updated {}", Facet.NAME,
+					uuid, Utility.orientVertexToJsonString(
+							(OrientVertex) facet, true));
 
-			logger.trace("{} with UUID {} has been updated {}", Facet.NAME, uuid, Utility.orientVertexToJsonString((OrientVertex) facet, true));
-			
-			
-			return Utility.orientVertexToJsonString((OrientVertex) facet, false);
+			return Utility
+					.orientVertexToJsonString((OrientVertex) facet, false);
 
 		} catch (FacetNotFoundException fnfe) {
 			if (orientGraph != null) {
@@ -383,8 +710,11 @@ public class EntityManagementImpl implements EntityManagement {
 			String consistOfType, String jsonProperties)
 			throws FacetNotFoundException, ResourceNotFoundException,
 			ResourceRegistryException {
-		return createEdgeRelation(resourceUUID, Resource.class, facetUUID,
-				Facet.class, consistOfType, jsonProperties);
+		Edge edge = createEdgeRelation(resourceUUID, Resource.class, 
+				facetUUID, Facet.class, 
+				consistOfType, ConsistsOf.class,
+				jsonProperties);
+		return Utility.orientEdgeToJsonString((OrientEdge) edge, false);
 	}
 
 	@Override
@@ -396,8 +726,8 @@ public class EntityManagementImpl implements EntityManagement {
 			orientGraph = ContextUtility
 					.getActualSecurityContextGraph(PermissionMode.WRITER);
 
-			Edge edge = getRelation(orientGraph, consistOfUUID, ConsistsOf.NAME,
-					ConsistsOf.class);
+			Edge edge = getRelation(orientGraph, consistOfUUID,
+					ConsistsOf.NAME, ConsistsOf.class);
 
 			edge.remove();
 			orientGraph.commit();
@@ -426,9 +756,11 @@ public class EntityManagementImpl implements EntityManagement {
 			String targetResourceUuid, String relatedToType,
 			String jsonProperties) throws ResourceNotFoundException,
 			ResourceRegistryException {
-		return createEdgeRelation(sourceResourceUuid, Resource.class,
-				targetResourceUuid, Resource.class, relatedToType,
+		Edge edge = createEdgeRelation(sourceResourceUuid, Resource.class,
+				targetResourceUuid, Resource.class, 
+				relatedToType, IsRelatedTo.class,
 				jsonProperties);
+		return Utility.orientEdgeToJsonString((OrientEdge) edge, false);
 	}
 
 	@Override
@@ -440,8 +772,8 @@ public class EntityManagementImpl implements EntityManagement {
 			orientGraph = ContextUtility
 					.getActualSecurityContextGraph(PermissionMode.WRITER);
 
-			Edge edge = getRelation(orientGraph, relatedToUUID, IsRelatedTo.NAME,
-					IsRelatedTo.class);
+			Edge edge = getRelation(orientGraph, relatedToUUID,
+					IsRelatedTo.NAME, IsRelatedTo.class);
 
 			edge.remove();
 			orientGraph.commit();
@@ -464,18 +796,49 @@ public class EntityManagementImpl implements EntityManagement {
 		return true;
 	}
 
-	@Override
-	public String createResource(String resourceType, String jsonRepresentation)
-			throws ResourceRegistryException {
-		try {
-			JsonNode jsonNode = org.gcube.informationsystem.impl.utils.Utility.getJSONNode(jsonRepresentation);
-		} catch (IOException e) {
-			throw new ResourceRegistryException(e);
+	private static String marshallResource(Vertex vertex){
+		// TODO serialize all facets as weel
+		return Utility.orientVertexToJsonString((OrientVertex) vertex, false); 
 	}
 	
 	
-		return createVertexEntity(resourceType, Resource.class,
+	@Override
+	public String createResource(String resourceType, String jsonRepresentation)
+			throws ResourceRegistryException {
+		
+		logger.trace("Trying to create {} : {}", resourceType,
 					jsonRepresentation);
+		
+		OrientGraph orientGraph;
+		try {
+			orientGraph = ContextUtility
+					.getActualSecurityContextGraph(PermissionMode.WRITER);
+			
+			Vertex resource = createVertexEntity(orientGraph, resourceType, Resource.class, jsonRepresentation, true);
+			
+			ObjectMapper mapper = new ObjectMapper();
+			JsonNode jsonNode = mapper.readTree(jsonRepresentation);
+			
+			String property = lowerCaseFirstCharacter(ConsistsOf.NAME);
+			if (jsonNode.has(property)) {
+				JsonNode jsonNodeArray = jsonNode.get(property);
+				createRelation(orientGraph, resource, jsonNodeArray, ConsistsOf.class);
+			}
+	
+			property = lowerCaseFirstCharacter(IsRelatedTo.NAME);
+			if (jsonNode.has(property)) {
+				JsonNode jsonNodeArray = jsonNode.get(property);
+				createRelation(orientGraph, resource, jsonNodeArray, IsRelatedTo.class);
+			}
+			
+			return marshallResource(resource);
+			
+		} catch(ResourceRegistryException rre) {  
+			throw rre;
+		} catch(Exception e){
+			throw new ResourceRegistryException(e);
+		}
+		
 	}
 
 	@Override
@@ -495,11 +858,11 @@ public class EntityManagementImpl implements EntityManagement {
 			Vertex resource = getEntity(orientGraph, uuid, resourceType,
 					Resource.class);
 
-			// TODO get all attached facets
-			logger.trace("{} of type {} with UUID {} is {}", Resource.NAME, resourceType, uuid, Utility.orientVertexToJsonString((OrientVertex) resource, true));
+			logger.trace("{} of type {} with UUID {} is {}", Resource.NAME,
+					resourceType, uuid, Utility.orientVertexToJsonString(
+							(OrientVertex) resource, true));
 
-			
-			return Utility.orientVertexToJsonString((OrientVertex) resource, false);
+			return marshallResource(resource);
 		} catch (ResourceNotFoundException rnfe) {
 			throw rnfe;
 		} catch (Exception e) {
@@ -523,6 +886,8 @@ public class EntityManagementImpl implements EntityManagement {
 			Vertex resource = getEntity(orientGraph, uuid, null, Resource.class);
 
 			// TODO remove attached facets if not managed from hooks
+			
+			
 			resource.remove();
 
 			orientGraph.commit();

src/main/java/org/gcube/informationsystem/resourceregistry/resources/utils/ContextUtility.java

@@ -9,6 +9,7 @@ import org.gcube.common.scope.api.ScopeProvider;
 import org.gcube.common.scope.impl.ScopeBean;
 import org.gcube.informationsystem.model.orientdb.impl.entity.Context;
 import org.gcube.informationsystem.model.orientdb.impl.entity.Entity;
+import org.gcube.informationsystem.resourceregistry.api.exceptions.ResourceRegistryException;
 import org.gcube.informationsystem.resourceregistry.api.exceptions.context.ContextException;
 import org.gcube.informationsystem.resourceregistry.api.exceptions.context.ContextNotFoundException;
 import org.gcube.informationsystem.resourceregistry.dbinitialization.SecurityContext;
@@ -77,15 +78,18 @@ public class ContextUtility {
 	}
 
 	public static OrientGraph getActualSecurityContextGraph(
-			PermissionMode permissionMode) throws Exception {
+			PermissionMode permissionMode) throws ResourceRegistryException {
 		try {
 			String contextID = getActualContextUUID();
 			OrientGraphFactory factory = SecurityContextMapper
 					.getSecurityContextFactory(contextID, permissionMode);
 			return factory.getTx();
+		} catch (ContextException ce) {
+			logger.error("Unable to retrieve context.", ce);
+			throw ce;
 		} catch (Exception e) {
 			logger.error("Unable to retrieve context.", e);
-			throw e;
+			throw new ResourceRegistryException(e);
 		}
 	}
 

src/main/java/org/gcube/informationsystem/resourceregistry/resources/utils/HeaderUtility.java

@@ -9,7 +9,8 @@ import java.util.Date;
 import java.util.UUID;
 
 import org.gcube.common.authorization.library.provider.AuthorizationProvider;
-import org.gcube.common.authorization.library.provider.UserInfo;
+import org.gcube.common.authorization.library.provider.ClientInfo;
+import org.gcube.common.authorization.library.utils.Caller;
 import org.gcube.informationsystem.model.orientdb.impl.embedded.Header;
 import org.gcube.informationsystem.model.orientdb.impl.entity.Entity;
 import org.gcube.informationsystem.model.orientdb.impl.relation.Relation;
@@ -39,10 +40,11 @@ public class HeaderUtility {
 
 		String creator = org.gcube.informationsystem.model.embedded.Header.UNKNOWN_USER;
 		try {
-			UserInfo userInfo = AuthorizationProvider.instance.get();
-			String username = userInfo.getUserName();
-			if (username != null && username.compareTo("") != 0) {
-				creator = username;
+			Caller caller = AuthorizationProvider.instance.get();
+			ClientInfo clientInfo = caller.getClient();
+			String clientId = clientInfo.getId();
+			if (clientId != null && clientId.compareTo("") != 0) {
+				creator = clientId;
 			} else {
 				throw new Exception("Username null or empty");
 			}

src/main/java/org/gcube/informationsystem/resourceregistry/resources/utils/Utility.java

@@ -35,9 +35,19 @@ public class Utility {
 
 	private static final Logger logger = LoggerFactory.getLogger(Utility.class);
 
-	public static String orientVertexToJsonString(OrientVertex orientVertex, boolean raw) {
+	public static String orientVertexToJsonString(OrientVertex orientVertex,
+			boolean raw) {
 		ORecord oRecord = orientVertex.getRecord();
-		if(raw){
+		if (raw) {
+			return oRecord.toJSON();
+		}
+		return oRecord.toJSON("class");
+	}
+
+	public static String orientEdgeToJsonString(OrientEdge orientEdge,
+			boolean raw) {
+		ORecord oRecord = orientEdge.getRecord();
+		if (raw) {
 			return oRecord.toJSON();
 		}
 		return oRecord.toJSON("class");
@@ -68,11 +78,6 @@ public class Utility {
 		}
 	}
 
-	public static String orientEdgeToJsonString(OrientEdge orientEdge) {
-		ORecord oRecord = orientEdge.getRecord();
-		return oRecord.toJSON();
-	}
-
 	public static String edgeToJsonString(Edge edge, boolean raw)
 			throws JSONException {
 		if (raw) {

src/test/java/org/gcube/informationsystem/resourceregistry/resources/impl/ContextManagementImplTest.java

@@ -155,8 +155,8 @@ public class ContextManagementImplTest {
 	}
 	
 	
-	@Test
-	public void devContextTest() throws ContextNotFoundException, ContextException, InternalException {
+	//@Test
+	public void createDevContext() throws ContextNotFoundException, ContextException, InternalException {
 		String gcube =  contextManagementImpl.create(null, "gcube");
 		logger.trace("/gcube : {}", gcube);
 		String devsec =  contextManagementImpl.create(gcube, "devsec");
@@ -179,6 +179,15 @@ public class ContextManagementImplTest {
 		logger.debug("The DB should be now clean");
 	}
 	
+	//@Test
+	public void removeDevContext() throws ContextNotFoundException, ContextException, InternalException {
+		contextManagementImpl.delete("508da10a-b8e7-414f-b176-65e227addcae");
+		contextManagementImpl.delete("d729c993-32f9-4bcd-9311-d92f791e5e12");
+		contextManagementImpl.delete("8bf286f8-a93c-4936-9826-91f1b1c2af34");
+		contextManagementImpl.delete("7273c1c7-bc06-4d49-bade-19dc3ab322f7");
+		contextManagementImpl.delete("132691d2-e22d-4e3b-b605-f8b2c94f2c77");
+	}
+	
 	@Test
 	public void readTest() throws ContextNotFoundException, ContextException, InternalException {
 		String A_1 = contextManagementImpl.create(null, "LLL");

src/test/java/org/gcube/informationsystem/resourceregistry/resources/impl/EntityManagementImplTest.java

@@ -233,10 +233,7 @@ public class EntityManagementImplTest {
 		
 		hostingNode.addFacet(cpuFacetImpl);
 		
-		StringWriter stringWriter = new StringWriter();
-		Entities.marshal(hostingNode, stringWriter);
-
-		String json = entityManagementImpl.createResource(HostingNode.NAME, stringWriter.toString());
+		String json = entityManagementImpl.createResource(HostingNode.NAME, Entities.marshal(hostingNode));
 		logger.debug("Created : {}", json);
 	}