Improved IS Model Organization

src/main/java/org/gcube/informationsystem/base/impl/ElementImpl.java

@@ -4,7 +4,6 @@
 package org.gcube.informationsystem.base.impl;
 
 import java.io.StringWriter;
-import java.util.List;
 
 import org.gcube.com.fasterxml.jackson.annotation.JsonTypeName;
 import org.gcube.informationsystem.base.reference.Element;
@@ -22,24 +21,12 @@ public class ElementImpl implements Element {
 	 */
 	private static final long serialVersionUID = 7338083489551084860L;
 	
-	protected List<String> supertypes;
-	protected String expectedtype;
 	
 	@Override
 	public String getTypeName() {
 		return TypeUtility.getTypeName(this.getClass());
 	}
 
-	@Override
-	public List<String> getSupertypes() {
-		return this.supertypes;
-	}
-	
-	@Override
-	public String getExpectedtype() {
-		return this.expectedtype;
-	}
-	
 	@Override
 	public String toString(){
 		StringWriter stringWriter = new StringWriter();

src/main/java/org/gcube/informationsystem/base/impl/properties/PropertyElementImpl.java

@@ -2,6 +2,7 @@ package org.gcube.informationsystem.base.impl.properties;
 
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.List;
 import java.util.Map;
 import java.util.Set;
 
@@ -24,6 +25,9 @@ public class PropertyElementImpl extends ElementImpl implements Property {
 	 */
 	private static final long serialVersionUID = 1396998430221747445L;
 
+	protected List<String> supertypes;
+	protected String expectedtype;
+	
 	@JsonIgnore
 	protected Map<String, Object> additionalProperties;
 	
@@ -40,6 +44,17 @@ public class PropertyElementImpl extends ElementImpl implements Property {
 		this.allowedAdditionalKeys.add(SUPERTYPES_PROPERTY);
 	}
 
+	@Override
+	public List<String> getSupertypes() {
+		return this.supertypes;
+	}
+	
+	@Override
+	public String getExpectedtype() {
+		return this.expectedtype;
+	}
+
+	
 	@Override
 	public Map<String, Object> getAdditionalProperties() {
 		return additionalProperties;

src/main/java/org/gcube/informationsystem/base/reference/Element.java

@@ -4,12 +4,8 @@
 package org.gcube.informationsystem.base.reference;
 
 import java.io.Serializable;
-import java.util.List;
 
-import org.gcube.com.fasterxml.jackson.annotation.JsonGetter;
 import org.gcube.com.fasterxml.jackson.annotation.JsonIgnore;
-import org.gcube.com.fasterxml.jackson.annotation.JsonInclude;
-import org.gcube.com.fasterxml.jackson.annotation.JsonInclude.Include;
 import org.gcube.com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import org.gcube.com.fasterxml.jackson.annotation.JsonTypeInfo;
 import org.gcube.informationsystem.types.annotations.Abstract;
@@ -21,7 +17,7 @@ import org.gcube.informationsystem.utils.Version;
  * @author Luca Frosini (ISTI - CNR)
  */
 @Abstract
-@JsonPropertyOrder({ Element.TYPE_PROPERTY, Element.SUPERTYPES_PROPERTY, Element.EXPECTED_TYPE_PROPERTY })
+@JsonPropertyOrder({ Element.TYPE_PROPERTY })
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.PROPERTY, property = Element.TYPE_PROPERTY)
 // @JsonTypeIdResolver(ElementTypeIdResolver.class)
 @TypeMetadata(name = Element.NAME, description = "This is the base type for Element", version = Version.MINIMAL_VERSION_STRING)
@@ -32,15 +28,6 @@ public interface Element extends Serializable {
 	
 	public static final String TYPE_PROPERTY = "type";
 	
-	public static final String SUPERTYPES_PROPERTY = "supertypes";
-	
-	/* 
-	 * This is the key used by the deserializer to indicate the expected type 
-	 * which instead has been deserialized using the best available
-	 * supertype 
-	 */
-	public static final String EXPECTED_TYPE_PROPERTY = "expectedtype";
-	
 	/**
 	 * DateTime Pattern to be used to serialize Dates in every element 
 	 */
@@ -49,12 +36,4 @@ public interface Element extends Serializable {
 	@JsonIgnore
 	public String getTypeName();
 	
-	@JsonInclude(Include.NON_EMPTY)
-	@JsonGetter(value = SUPERTYPES_PROPERTY)
-	public List<String> getSupertypes();
-	
-	@JsonInclude(Include.NON_EMPTY)
-	@JsonGetter(value = EXPECTED_TYPE_PROPERTY)
-	public String getExpectedtype();
-	
 }

src/main/java/org/gcube/informationsystem/base/reference/IdentifiableElement.java

@@ -14,7 +14,7 @@ import org.gcube.informationsystem.model.reference.properties.Metadata;
  * 
  * @author Luca Frosini (ISTI - CNR)
  */
-@JsonPropertyOrder({ Element.TYPE_PROPERTY, Element.SUPERTYPES_PROPERTY, Element.EXPECTED_TYPE_PROPERTY, IdentifiableElement.ID_PROPERTY, IdentifiableElement.METADATA_PROPERTY })
+@JsonPropertyOrder({ Element.TYPE_PROPERTY, IdentifiableElement.ID_PROPERTY, IdentifiableElement.METADATA_PROPERTY })
 public interface IdentifiableElement extends Element {
 	
 	public static final String ID_PROPERTY = "id";

src/main/java/org/gcube/informationsystem/base/reference/entities/EntityElement.java

@@ -18,7 +18,7 @@ import org.gcube.informationsystem.utils.Version;
  */
 @Abstract
 @JsonIgnoreProperties(ignoreUnknown=true)
-@JsonPropertyOrder({ Element.TYPE_PROPERTY, Element.SUPERTYPES_PROPERTY, Element.EXPECTED_TYPE_PROPERTY, IdentifiableElement.ID_PROPERTY, IdentifiableElement.METADATA_PROPERTY })
+@JsonPropertyOrder({ Element.TYPE_PROPERTY, IdentifiableElement.ID_PROPERTY, IdentifiableElement.METADATA_PROPERTY })
 //@JsonDeserialize(as=EntityElementImpl.class) Do not uncomment to manage subclasses
 @TypeMetadata(name = EntityElement.NAME, description = "This is the base type for any EntityElement", version = Version.MINIMAL_VERSION_STRING)
 @Change(version = Version.MINIMAL_VERSION_STRING, description = Version.MINIMAL_VERSION_DESCRIPTION)

src/main/java/org/gcube/informationsystem/model/impl/entities/EntityImpl.java

@@ -3,6 +3,7 @@
  */
 package org.gcube.informationsystem.model.impl.entities;
 
+import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 
@@ -23,6 +24,8 @@ public abstract class EntityImpl extends EntityElementImpl implements Entity {
 	 */
 	private static final long serialVersionUID = -4488771434017342703L;
 	
+	protected List<String> supertypes;
+	protected String expectedtype;
 	protected Map<UUID,String> contexts;
 	
 	protected EntityImpl(){
@@ -30,6 +33,16 @@ public abstract class EntityImpl extends EntityElementImpl implements Entity {
 		this.metadata = null;
 	}
 
+	@Override
+	public List<String> getSupertypes() {
+		return this.supertypes;
+	}
+	
+	@Override
+	public String getExpectedtype() {
+		return this.expectedtype;
+	}
+	
 	public Map<UUID,String> getContexts(){
 		return this.contexts;
 	}

src/main/java/org/gcube/informationsystem/model/impl/entities/FacetImpl.java

@@ -11,6 +11,7 @@ import java.util.Set;
 import org.gcube.com.fasterxml.jackson.annotation.JsonIgnore;
 import org.gcube.com.fasterxml.jackson.annotation.JsonTypeName;
 import org.gcube.informationsystem.base.reference.Element;
+import org.gcube.informationsystem.model.reference.ModelElement;
 import org.gcube.informationsystem.model.reference.entities.Facet;
 import org.gcube.informationsystem.model.reference.properties.Property;
 import org.gcube.informationsystem.serialization.ElementMapper;
@@ -39,7 +40,8 @@ public abstract class FacetImpl extends EntityImpl implements Facet {
 		super();
 		this.additionalProperties = new HashMap<>();
 		this.allowedAdditionalKeys = new HashSet<>();
-		this.allowedAdditionalKeys.add(SUPERTYPES_PROPERTY);
+		this.allowedAdditionalKeys.add(ModelElement.SUPERTYPES_PROPERTY);
+		this.allowedAdditionalKeys.add(ModelElement.EXPECTED_TYPE_PROPERTY);
 	}
 	
 	@Override

src/main/java/org/gcube/informationsystem/model/impl/relations/RelationImpl.java

@@ -5,6 +5,7 @@ package org.gcube.informationsystem.model.impl.relations;
 
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.UUID;
@@ -34,6 +35,8 @@ public abstract class RelationImpl<S extends Resource, T extends Entity>
 	 */
 	private static final long serialVersionUID = -6249979476879235053L;
 	
+	protected List<String> supertypes;
+	protected String expectedtype;
 	protected Map<UUID,String> contexts;
 	
 	protected PropagationConstraint propagationConstraint;
@@ -61,6 +64,17 @@ public abstract class RelationImpl<S extends Resource, T extends Entity>
 		this.propagationConstraint = propagationConstraint;
 	}
 
+
+	@Override
+	public List<String> getSupertypes() {
+		return this.supertypes;
+	}
+	
+	@Override
+	public String getExpectedtype() {
+		return this.expectedtype;
+	}
+	
 	public Map<UUID,String> getContexts(){
 		return this.contexts;
 	}

src/main/java/org/gcube/informationsystem/model/reference/ERElement.java

@@ -5,8 +5,8 @@ import java.util.UUID;
 
 import org.gcube.com.fasterxml.jackson.annotation.JsonGetter;
 import org.gcube.com.fasterxml.jackson.annotation.JsonInclude;
-import org.gcube.com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import org.gcube.com.fasterxml.jackson.annotation.JsonInclude.Include;
+import org.gcube.com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import org.gcube.informationsystem.base.reference.Element;
 import org.gcube.informationsystem.base.reference.IdentifiableElement;
 
@@ -16,8 +16,8 @@ import org.gcube.informationsystem.base.reference.IdentifiableElement;
  * 
  * @author Luca Frosini (ISTI - CNR)
  */
-@JsonPropertyOrder({ Element.TYPE_PROPERTY, Element.SUPERTYPES_PROPERTY, Element.EXPECTED_TYPE_PROPERTY, IdentifiableElement.ID_PROPERTY, IdentifiableElement.METADATA_PROPERTY, ERElement.CONTEXTS_PROPERTY })
+@JsonPropertyOrder({ Element.TYPE_PROPERTY, ModelElement.SUPERTYPES_PROPERTY, ModelElement.EXPECTED_TYPE_PROPERTY, IdentifiableElement.ID_PROPERTY, IdentifiableElement.METADATA_PROPERTY, ERElement.CONTEXTS_PROPERTY })
-public interface ERElement extends IdentifiableElement {
+public interface ERElement extends IdentifiableElement, ModelElement {
 
 	/**
 	 * Used when requested to include contexts in metadata.

src/main/java/org/gcube/informationsystem/model/reference/ModelElement.java

@@ -0,0 +1,34 @@
+package org.gcube.informationsystem.model.reference;
+
+import java.util.List;
+
+import org.gcube.com.fasterxml.jackson.annotation.JsonGetter;
+import org.gcube.com.fasterxml.jackson.annotation.JsonInclude;
+import org.gcube.com.fasterxml.jackson.annotation.JsonInclude.Include;
+import org.gcube.com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import org.gcube.informationsystem.base.reference.Element;
+
+/**
+ * @author Luca Frosini (ISTI - CNR)
+ */
+@JsonPropertyOrder({ Element.TYPE_PROPERTY, ModelElement.SUPERTYPES_PROPERTY, ModelElement.EXPECTED_TYPE_PROPERTY })
+public interface ModelElement extends Element {
+
+	public static final String SUPERTYPES_PROPERTY = "supertypes";
+	
+	/* 
+	 * This is the key used by the deserializer to indicate the expected type 
+	 * which instead has been deserialized using the best available
+	 * supertype 
+	 */
+	public static final String EXPECTED_TYPE_PROPERTY = "expectedtype";
+	
+	@JsonInclude(Include.NON_EMPTY)
+	@JsonGetter(value = SUPERTYPES_PROPERTY)
+	public List<String> getSupertypes();
+	
+	@JsonInclude(Include.NON_EMPTY)
+	@JsonGetter(value = EXPECTED_TYPE_PROPERTY)
+	public String getExpectedtype();
+	
+}

src/main/java/org/gcube/informationsystem/model/reference/entities/Entity.java

@@ -8,6 +8,7 @@ import org.gcube.informationsystem.base.reference.Element;
 import org.gcube.informationsystem.base.reference.IdentifiableElement;
 import org.gcube.informationsystem.base.reference.entities.EntityElement;
 import org.gcube.informationsystem.model.reference.ERElement;
+import org.gcube.informationsystem.model.reference.ModelElement;
 import org.gcube.informationsystem.types.annotations.Abstract;
 import org.gcube.informationsystem.types.reference.Change;
 import org.gcube.informationsystem.types.reference.TypeMetadata;
@@ -19,7 +20,7 @@ import org.gcube.informationsystem.utils.Version;
  * @author Luca Frosini (ISTI - CNR)
  */
 @Abstract
-@JsonPropertyOrder({ Element.TYPE_PROPERTY, Element.SUPERTYPES_PROPERTY, Element.EXPECTED_TYPE_PROPERTY, IdentifiableElement.ID_PROPERTY, IdentifiableElement.METADATA_PROPERTY, ERElement.CONTEXTS_PROPERTY })
+@JsonPropertyOrder({ Element.TYPE_PROPERTY, ModelElement.SUPERTYPES_PROPERTY, ModelElement.EXPECTED_TYPE_PROPERTY, IdentifiableElement.ID_PROPERTY, IdentifiableElement.METADATA_PROPERTY, ERElement.CONTEXTS_PROPERTY })
 //@JsonDeserialize(as=EntityImpl.class) Do not uncomment to manage subclasses
 @TypeMetadata(name = Entity.NAME, description = "This is the base type for any Entity", version = Version.MINIMAL_VERSION_STRING)
 @Change(version = Version.MINIMAL_VERSION_STRING, description = Version.MINIMAL_VERSION_DESCRIPTION)

src/main/java/org/gcube/informationsystem/model/reference/entities/Resource.java

@@ -12,12 +12,13 @@ import org.gcube.com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import org.gcube.informationsystem.base.reference.Element;
 import org.gcube.informationsystem.base.reference.IdentifiableElement;
 import org.gcube.informationsystem.model.reference.ERElement;
+import org.gcube.informationsystem.model.reference.ModelElement;
 import org.gcube.informationsystem.model.reference.relations.ConsistsOf;
 import org.gcube.informationsystem.model.reference.relations.IsRelatedTo;
 import org.gcube.informationsystem.types.annotations.Abstract;
+import org.gcube.informationsystem.types.annotations.RelatedResourcesEntry;
 import org.gcube.informationsystem.types.annotations.ResourceSchema;
 import org.gcube.informationsystem.types.annotations.ResourceSchemaEntry;
-import org.gcube.informationsystem.types.annotations.RelatedResourcesEntry;
 import org.gcube.informationsystem.types.reference.Change;
 import org.gcube.informationsystem.types.reference.TypeMetadata;
 import org.gcube.informationsystem.utils.Version;
@@ -29,7 +30,7 @@ import org.gcube.informationsystem.utils.Version;
  */
 @Abstract
 @JsonIgnoreProperties(ignoreUnknown=true)
-@JsonPropertyOrder({ Element.TYPE_PROPERTY, Element.SUPERTYPES_PROPERTY, Element.EXPECTED_TYPE_PROPERTY, IdentifiableElement.ID_PROPERTY, IdentifiableElement.METADATA_PROPERTY, ERElement.CONTEXTS_PROPERTY, Resource.CONSISTS_OF_PROPERTY, Resource.IS_RELATED_TO_PROPERTY })
+@JsonPropertyOrder({ Element.TYPE_PROPERTY, ModelElement.SUPERTYPES_PROPERTY, ModelElement.EXPECTED_TYPE_PROPERTY, IdentifiableElement.ID_PROPERTY, IdentifiableElement.METADATA_PROPERTY, ERElement.CONTEXTS_PROPERTY, Resource.CONSISTS_OF_PROPERTY, Resource.IS_RELATED_TO_PROPERTY })
 // @JsonDeserialize(as=ResourceImpl.class) Do not uncomment to manage subclasses
 @ResourceSchema(
 	facets={

src/main/java/org/gcube/informationsystem/model/reference/properties/Property.java

@@ -14,6 +14,7 @@ import org.gcube.informationsystem.base.reference.Element;
 import org.gcube.informationsystem.base.reference.SchemaMixedElement;
 import org.gcube.informationsystem.base.reference.properties.PropertyElement;
 import org.gcube.informationsystem.model.impl.properties.PropertyImpl;
+import org.gcube.informationsystem.model.reference.ModelElement;
 import org.gcube.informationsystem.serialization.AdditionalPropertiesSerializer;
 import org.gcube.informationsystem.types.reference.Change;
 import org.gcube.informationsystem.types.reference.TypeMetadata;
@@ -26,11 +27,11 @@ import org.gcube.informationsystem.utils.Version;
  * @author Luca Frosini (ISTI - CNR)
  */
 // @JsonIgnoreProperties(ignoreUnknown=true)
-@JsonPropertyOrder({ Element.TYPE_PROPERTY, Element.SUPERTYPES_PROPERTY, Element.EXPECTED_TYPE_PROPERTY })
+@JsonPropertyOrder({ Element.TYPE_PROPERTY, ModelElement.SUPERTYPES_PROPERTY, ModelElement.EXPECTED_TYPE_PROPERTY })
 @JsonDeserialize(as=PropertyImpl.class)
 @TypeMetadata(name = Property.NAME, description = "This is the base type for any Property", version = Version.MINIMAL_VERSION_STRING)
 @Change(version = Version.MINIMAL_VERSION_STRING, description = Version.MINIMAL_VERSION_DESCRIPTION)
-public interface Property extends PropertyElement, SchemaMixedElement {
+public interface Property extends PropertyElement, SchemaMixedElement, ModelElement {
 	
 	public static final String NAME = "Property"; //Property.class.getSimpleName();
 	

src/main/java/org/gcube/informationsystem/model/reference/relations/Relation.java

@@ -19,6 +19,7 @@ import org.gcube.informationsystem.base.reference.IdentifiableElement;
 import org.gcube.informationsystem.base.reference.SchemaMixedElement;
 import org.gcube.informationsystem.base.reference.relations.RelationElement;
 import org.gcube.informationsystem.model.reference.ERElement;
+import org.gcube.informationsystem.model.reference.ModelElement;
 import org.gcube.informationsystem.model.reference.entities.Entity;
 import org.gcube.informationsystem.model.reference.entities.Resource;
 import org.gcube.informationsystem.model.reference.properties.PropagationConstraint;
@@ -35,7 +36,7 @@ import org.gcube.informationsystem.utils.Version;
  * https://wiki.gcube-system.org/gcube/Facet_Based_Resource_Model#Relation
  */
 @Abstract
-@JsonPropertyOrder({ Element.TYPE_PROPERTY, Element.SUPERTYPES_PROPERTY, Element.EXPECTED_TYPE_PROPERTY, IdentifiableElement.ID_PROPERTY, IdentifiableElement.METADATA_PROPERTY, ERElement.CONTEXTS_PROPERTY, Relation.PROPAGATION_CONSTRAINT_PROPERTY })
+@JsonPropertyOrder({ Element.TYPE_PROPERTY, ModelElement.SUPERTYPES_PROPERTY, ModelElement.EXPECTED_TYPE_PROPERTY, IdentifiableElement.ID_PROPERTY, IdentifiableElement.METADATA_PROPERTY, ERElement.CONTEXTS_PROPERTY, Relation.PROPAGATION_CONSTRAINT_PROPERTY })
 // @JsonDeserialize(as=RelationImpl.class) Do not uncomment to manage subclasses
 @TypeMetadata(name = Relation.NAME, description = "This is the base type for any Relation", version = Version.MINIMAL_VERSION_STRING)
 @Change(version = Version.MINIMAL_VERSION_STRING, description = Version.MINIMAL_VERSION_DESCRIPTION)

src/main/java/org/gcube/informationsystem/serialization/ElementDeserializer.java

@@ -24,6 +24,7 @@ import org.gcube.com.fasterxml.jackson.databind.node.ObjectNode;
 import org.gcube.com.fasterxml.jackson.databind.node.TextNode;
 import org.gcube.informationsystem.base.reference.AccessType;
 import org.gcube.informationsystem.base.reference.Element;
+import org.gcube.informationsystem.model.reference.ModelElement;
 import org.gcube.informationsystem.types.TypeMapper;
 
 /**
@@ -60,13 +61,13 @@ public class ElementDeserializer<ISM extends Element> extends StdDeserializer<IS
 			List<TextNode> toBeKeepSuperClasses = new ArrayList<>();
 
 			ObjectNode objectNode = (ObjectNode) treeNode;
-			if(!objectNode.has(Element.EXPECTED_TYPE_PROPERTY)) {
+			if(!objectNode.has(ModelElement.EXPECTED_TYPE_PROPERTY)) {
-				objectNode.set(Element.EXPECTED_TYPE_PROPERTY, objectNode.get(Element.TYPE_PROPERTY));
+				objectNode.set(ModelElement.EXPECTED_TYPE_PROPERTY, objectNode.get(Element.TYPE_PROPERTY));
 			}
 
 			try {
 				JsonNode superClassesTreeNode = objectNode
-						.get(Element.SUPERTYPES_PROPERTY);
+						.get(ModelElement.SUPERTYPES_PROPERTY);
 				if (superClassesTreeNode != null
 						&& superClassesTreeNode.isArray()) {
 					ArrayNode arrayNode = (ArrayNode) superClassesTreeNode;

src/main/java/org/gcube/informationsystem/serialization/ElementMapper.java

@@ -30,6 +30,7 @@ import org.gcube.informationsystem.base.reference.AccessType;
 import org.gcube.informationsystem.base.reference.Element;
 import org.gcube.informationsystem.discovery.Discovery;
 import org.gcube.informationsystem.discovery.knowledge.Knowledge;
+import org.gcube.informationsystem.model.reference.ModelElement;
 import org.gcube.informationsystem.types.TypeMapper;
 import org.gcube.informationsystem.types.reference.Type;
 import org.slf4j.Logger;
@@ -195,14 +196,14 @@ public abstract class ElementMapper {
 		StringBuffer stringBuffer = new StringBuffer();
 		stringBuffer.append(unknownType);
 		stringBuffer.append(" is an unknown type. Please provide ");
-		stringBuffer.append(Element.SUPERTYPES_PROPERTY);
+		stringBuffer.append(ModelElement.SUPERTYPES_PROPERTY);
 		stringBuffer.append(" property as string array to allow to instantiate the most appropriated class.");
 		return stringBuffer;
 	}
 	
 	protected static ObjectNode setTypeToBestAvailable(ObjectNode objectNode) {
 		String unknownType = objectNode.get(Element.TYPE_PROPERTY).asText();
-		ArrayNode arrayNode = (ArrayNode) objectNode.get(Element.SUPERTYPES_PROPERTY);
+		ArrayNode arrayNode = (ArrayNode) objectNode.get(ModelElement.SUPERTYPES_PROPERTY);
 		
 		String candidatedSupertype = null;
 		for(int i = 0; i < arrayNode.size(); i++) {
@@ -227,11 +228,11 @@ public abstract class ElementMapper {
 		}
 			
 		if(candidatedSupertype!=null) {
-			if(!objectNode.has(Element.EXPECTED_TYPE_PROPERTY)) {
+			if(!objectNode.has(ModelElement.EXPECTED_TYPE_PROPERTY)) {
-				objectNode.set(Element.EXPECTED_TYPE_PROPERTY, objectNode.get(Element.TYPE_PROPERTY));
+				objectNode.set(ModelElement.EXPECTED_TYPE_PROPERTY, objectNode.get(Element.TYPE_PROPERTY));
 			}
 			objectNode.set(Element.TYPE_PROPERTY, new TextNode(candidatedSupertype));
-			objectNode.remove(Element.SUPERTYPES_PROPERTY);
+			objectNode.remove(ModelElement.SUPERTYPES_PROPERTY);
 			return objectNode;
 		}
 		
@@ -305,6 +306,9 @@ public abstract class ElementMapper {
 		try {
 			return mapper.readValue(reader, clz);
 		} catch (JsonMappingException e) {
+			if(!ModelElement.class.isAssignableFrom(clz)) {
+				throw e;
+			}
 			JsonNode jsonNode = mapper.readTree(reader);
 			jsonNode = analizeTypes((ObjectNode) jsonNode);
 			return ElementMapper.unmarshal(clz, mapper.writeValueAsString(jsonNode));
@@ -326,6 +330,9 @@ public abstract class ElementMapper {
 		try {
 			return mapper.readValue(stream, clz);
 		} catch (JsonMappingException e) {
+			if(!ModelElement.class.isAssignableFrom(clz)) {
+				throw e;
+			}
 			JsonNode jsonNode = mapper.readTree(stream);
 			jsonNode = analizeTypes((ObjectNode) jsonNode);
 			return ElementMapper.unmarshal(clz, mapper.writeValueAsString(jsonNode));
@@ -346,6 +353,9 @@ public abstract class ElementMapper {
 		try {
 			return mapper.readValue(string, clz);
 		} catch (JsonMappingException e) {
+			if(!ModelElement.class.isAssignableFrom(clz)) {
+				throw e;
+			}
 			JsonNode jsonNode = mapper.readTree(string);
 			jsonNode = analizeTypes((ObjectNode) jsonNode);
 			return ElementMapper.unmarshal(clz, mapper.writeValueAsString(jsonNode));
@@ -358,6 +368,9 @@ public abstract class ElementMapper {
 		try {
 			return mapper.readValue(string, type);
 		} catch (JsonMappingException e) {
+			if(!ModelElement.class.isAssignableFrom(clz)) {
+				throw e;
+			}
 			List<El> ret = new ArrayList<>();
 			ArrayNode arrayNode = (ArrayNode) mapper.readTree(string);
 			for(JsonNode jsonNode : arrayNode) {

src/main/java/org/gcube/informationsystem/types/impl/TypeImpl.java

@@ -5,7 +5,6 @@ import java.lang.reflect.ParameterizedType;
 import java.lang.reflect.TypeVariable;
 import java.util.HashMap;
 import java.util.HashSet;
-import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.TreeSet;
@@ -62,8 +61,6 @@ public class TypeImpl implements Type {
 	
 	protected UUID uuid;
 	protected Metadata metadata;
-	protected List<String> supertypes;
-	protected String expectedtype;
 	
 	protected String name;
 	protected String description;
@@ -78,7 +75,7 @@ public class TypeImpl implements Type {
 	@JsonProperty(value = FINAL_PROPERTY)
 	protected boolean finalClass;
 	
-	protected Set<String> typeSuperTypes;
+	protected Set<String> extendedTypes;
 
 	protected Set<PropertyDefinition> properties;
 
@@ -278,8 +275,8 @@ public class TypeImpl implements Type {
 	}
 
 	@Override
-	public Set<String> getTypeSuperTypes() {
+	public Set<String> getExtendedTypes() {
-		return typeSuperTypes;
+		return extendedTypes;
 	}
 
 	@JsonInclude(Include.NON_EMPTY)
@@ -298,14 +295,4 @@ public class TypeImpl implements Type {
 		return TypeUtility.getTypeName(this.getClass());
 	}
 	
-	@Override
-	public List<String> getSupertypes() {
-		return this.supertypes;
-	}
-	
-	@Override
-	public String getExpectedtype() {
-		return this.expectedtype;
-	}
-	
 }

src/main/java/org/gcube/informationsystem/types/impl/entities/EntityTypeImpl.java

@@ -66,17 +66,17 @@ public class EntityTypeImpl extends TypeImpl implements EntityType {
 		if(EntityType.class.isAssignableFrom(clz)){
 			@SuppressWarnings("unchecked")
 			Class<? extends EntityType> c = (Class<? extends EntityType>) clz;
-			this.typeSuperTypes = retrieveSuperClasses(c, EntityType.class, EntityElement.NAME);
+			this.extendedTypes = retrieveSuperClasses(c, EntityType.class, EntityElement.NAME);
 		} else if(Context.class.isAssignableFrom(clz)){
 			@SuppressWarnings("unchecked")
 			Class<? extends Context> c = (Class<? extends Context>) clz;
-			this.typeSuperTypes = retrieveSuperClasses(c, Context.class, EntityElement.NAME);
+			this.extendedTypes = retrieveSuperClasses(c, Context.class, EntityElement.NAME);
 		} else if(QueryTemplate.class.isAssignableFrom(clz)){
 			@SuppressWarnings("unchecked")
 			Class<? extends QueryTemplate> c = (Class<? extends QueryTemplate>) clz;
-			this.typeSuperTypes = retrieveSuperClasses(c, QueryTemplate.class, EntityElement.NAME);
+			this.extendedTypes = retrieveSuperClasses(c, QueryTemplate.class, EntityElement.NAME);
 		} else if(EntityElement.class.isAssignableFrom(clz)){
-			this.typeSuperTypes = retrieveSuperClasses(clz, EntityElement.class, null);
+			this.extendedTypes = retrieveSuperClasses(clz, EntityElement.class, null);
 		} else {
 			throw new RuntimeException("Type Hierachy Error for class " + clz.getSimpleName());
 		}

src/main/java/org/gcube/informationsystem/types/impl/entities/FacetTypeImpl.java

@@ -29,7 +29,7 @@ public final class FacetTypeImpl extends EntityTypeImpl implements FacetType {
 	
 	public FacetTypeImpl(Class<? extends Facet> clz) {
 		super(clz);
-		this.typeSuperTypes = retrieveSuperClasses(clz, Facet.class, Entity.NAME);
+		this.extendedTypes = retrieveSuperClasses(clz, Facet.class, Entity.NAME);
 		this.properties = retrieveListOfProperties(clz);
 	}
 	

src/main/java/org/gcube/informationsystem/types/impl/entities/ResourceTypeImpl.java

@@ -37,7 +37,7 @@ public final class ResourceTypeImpl extends EntityTypeImpl implements ResourceTy
 	public ResourceTypeImpl(Class<? extends Resource> clz) {
 		super(clz);
 		
-		this.typeSuperTypes = retrieveSuperClasses(clz, Resource.class, Entity.NAME);
+		this.extendedTypes = retrieveSuperClasses(clz, Resource.class, Entity.NAME);
 		
 		setResourceSchemaEntries(clz);
 	}

src/main/java/org/gcube/informationsystem/types/impl/properties/PropertyDefinitionImpl.java

@@ -3,7 +3,6 @@ package org.gcube.informationsystem.types.impl.properties;
 import java.lang.reflect.Method;
 import java.net.URI;
 import java.net.URL;
-import java.util.List;
 import java.util.Objects;
 import java.util.UUID;
 
@@ -36,9 +35,6 @@ public final class PropertyDefinitionImpl implements PropertyDefinition {
 	public final static String URI_REGEX = null;
 	public final static String URL_REGEX = null;
 	
-	protected List<String> supertypes;
-	protected String expectedtype;
-	
 	private String name= "";
 	private String description= "";
 	private boolean mandatory = false;
@@ -291,14 +287,4 @@ public final class PropertyDefinitionImpl implements PropertyDefinition {
 		return TypeUtility.getTypeName(this.getClass());
 	}
 	
-	@Override
-	public List<String> getSupertypes() {
-		return this.supertypes;
-	}
-	
-	@Override
-	public String getExpectedtype() {
-		return this.expectedtype;
-	}
-	
 }

src/main/java/org/gcube/informationsystem/types/impl/properties/PropertyTypeImpl.java

@@ -45,7 +45,7 @@ public final class PropertyTypeImpl<P extends PropertyElement> extends TypeImpl
 	
 	public PropertyTypeImpl(Class<P> clz) {
 		super(clz);
-		this.typeSuperTypes = retrieveSuperClasses(clz, PropertyElement.class,
+		this.extendedTypes = retrieveSuperClasses(clz, PropertyElement.class,
 				clz == PropertyElement.class ? null : PropertyElement.NAME);
 		
 		this.properties = retrieveListOfProperties(clz);

src/main/java/org/gcube/informationsystem/types/impl/relations/ConsistsOfTypeImpl.java

@@ -33,7 +33,7 @@ public final class ConsistsOfTypeImpl extends RelationTypeImpl<ResourceType, Fac
 	public ConsistsOfTypeImpl(Class<? extends ConsistsOf<? extends Resource, ? extends Facet>> clz) {
 		super(clz);
 		
-		this.typeSuperTypes = retrieveSuperClasses(clz, ConsistsOf.class, Relation.NAME);
+		this.extendedTypes = retrieveSuperClasses(clz, ConsistsOf.class, Relation.NAME);
 		
 		this.properties = retrieveListOfProperties(clz);
 		

src/main/java/org/gcube/informationsystem/types/impl/relations/IsRelatedToTypeImpl.java

@@ -30,7 +30,7 @@ public final class IsRelatedToTypeImpl extends RelationTypeImpl<ResourceType, Re
 	public IsRelatedToTypeImpl(Class<? extends IsRelatedTo<? extends Resource, ? extends Resource>> clz) {
 		super(clz);
 		
-		this.typeSuperTypes = retrieveSuperClasses(clz, IsRelatedTo.class, Relation.NAME);
+		this.extendedTypes = retrieveSuperClasses(clz, IsRelatedTo.class, Relation.NAME);
 		
 		this.properties = retrieveListOfProperties(clz);
 		

src/main/java/org/gcube/informationsystem/types/impl/relations/RelationTypeImpl.java

@@ -58,13 +58,13 @@ public class RelationTypeImpl<S extends EntityType, T extends EntityType>
 		if(RelationType.class.isAssignableFrom(clz)) {
 			@SuppressWarnings({"unchecked"})
 			Class<RelationType<?,?>> c = (Class<RelationType<?,?>>) clz;
-			this.typeSuperTypes = retrieveSuperClasses(c, RelationType.class, RelationElement.NAME);
+			this.extendedTypes = retrieveSuperClasses(c, RelationType.class, RelationElement.NAME);
 		} else if(IsParentOf.class.isAssignableFrom(clz)) {
 			@SuppressWarnings("unchecked")
 			Class<? extends IsParentOf> c = (Class<? extends IsParentOf>) clz;
-			this.typeSuperTypes = retrieveSuperClasses(c, IsParentOf.class, RelationElement.NAME);
+			this.extendedTypes = retrieveSuperClasses(c, IsParentOf.class, RelationElement.NAME);
 		} else if(RelationElement.class.isAssignableFrom(clz)) {
-			this.typeSuperTypes = retrieveSuperClasses(clz, RelationElement.class, null);
+			this.extendedTypes = retrieveSuperClasses(clz, RelationElement.class, null);
 		} else {
 			throw new RuntimeException("Type Hierachy Error");
 		}

src/main/java/org/gcube/informationsystem/types/reference/Type.java

@@ -22,7 +22,7 @@ import org.gcube.informationsystem.utils.Version;
  */
 @Abstract
 @JsonIgnoreProperties(ignoreUnknown=true)
-@JsonPropertyOrder({ Element.TYPE_PROPERTY, Element.SUPERTYPES_PROPERTY, IdentifiableElement.ID_PROPERTY, IdentifiableElement.METADATA_PROPERTY })
+@JsonPropertyOrder({ Element.TYPE_PROPERTY, IdentifiableElement.ID_PROPERTY, IdentifiableElement.METADATA_PROPERTY })
 @TypeMetadata(name = Type.NAME, description = "This is the base type to define any Type", version = Version.MINIMAL_VERSION_STRING)
 @Change(version = Version.MINIMAL_VERSION_STRING, description = Version.MINIMAL_VERSION_DESCRIPTION)
 //@JsonDeserialize(as=TypeImpl.class) Do not uncomment to manage subclasses
@@ -37,7 +37,7 @@ public interface Type extends IdentifiableElement {
 	public static final String ABSTRACT_PROPERTY = "abstract";
 	public static final String FINAL_PROPERTY = "final";
 	/* Cannot use 'supertypes' which conflicts with Element */
-	public static final String TYPE_SUPER_TYPES_PROPERTY = "typeSuperTypes";
+	public static final String EXTENDED_TYPES_PROPERTY = "extendedTypes";
 	public static final String PROPERTIES_PROPERTY = "properties";
 	
 	@JsonGetter(value = ID_PROPERTY)
@@ -78,8 +78,8 @@ public interface Type extends IdentifiableElement {
 	@JsonGetter(value = FINAL_PROPERTY)
 	public boolean isFinal();
 	
-	@JsonGetter(value = TYPE_SUPER_TYPES_PROPERTY)
+	@JsonGetter(value = EXTENDED_TYPES_PROPERTY)
-	public Set<String> getTypeSuperTypes();
+	public Set<String> getExtendedTypes();
 	
 	public Set<PropertyDefinition> getProperties();
 

src/main/java/org/gcube/informationsystem/types/reference/entities/EntityType.java

@@ -38,8 +38,8 @@ public interface EntityType extends Type, EntityElement {
 	public boolean isAbstract();
 
 	@Override
-	@ISProperty(name = Type.TYPE_SUPER_TYPES_PROPERTY, readonly = true, mandatory = true, nullable = false)
+	@ISProperty(name = Type.EXTENDED_TYPES_PROPERTY, readonly = true, mandatory = true, nullable = false)
-	public Set<String> getTypeSuperTypes();
+	public Set<String> getExtendedTypes();
 
 	/* Type is just a Java useful class. The type is not created in the IS. Hence the fields must be redefined */
 	

src/main/java/org/gcube/informationsystem/types/reference/properties/PropertyType.java

@@ -62,8 +62,8 @@ public interface PropertyType<P extends PropertyElement> extends PropertyElement
 	public boolean isAbstract();
 
 	@Override
-	@ISProperty(name = Type.TYPE_SUPER_TYPES_PROPERTY, readonly = true, mandatory = true, nullable = false)
+	@ISProperty(name = Type.EXTENDED_TYPES_PROPERTY, readonly = true, mandatory = true, nullable = false)
-	public Set<String> getTypeSuperTypes();
+	public Set<String> getExtendedTypes();
 	
 	@ISProperty(name = Type.PROPERTIES_PROPERTY, readonly = false, mandatory = true, nullable = false)
 	public Set<PropertyDefinition> getProperties();

src/main/java/org/gcube/informationsystem/types/reference/relations/RelationType.java

@@ -41,8 +41,8 @@ public interface RelationType<S extends EntityType, T extends EntityType>
 	public boolean isAbstract();
 	
 	@Override
-	@ISProperty(name = Type.TYPE_SUPER_TYPES_PROPERTY, readonly = true, mandatory = true, nullable = false)
+	@ISProperty(name = Type.EXTENDED_TYPES_PROPERTY, readonly = true, mandatory = true, nullable = false)
-	public Set<String> getTypeSuperTypes();
+	public Set<String> getExtendedTypes();
 	
 	@Override
 	@ISProperty(name = Type.PROPERTIES_PROPERTY, readonly = false, mandatory = true, nullable = false)

src/test/java/org/gcube/informationsystem/discovery/DiscoveryTest.java

@@ -41,8 +41,8 @@ public class DiscoveryTest {
 		Assert.assertTrue(type.getDescription().compareTo(expected.getDescription())==0);
 		Assert.assertTrue(type.isAbstract() == expected.isAbstract());
 		
-		Assert.assertTrue(type.getTypeSuperTypes().containsAll(expected.getTypeSuperTypes()));
+		Assert.assertTrue(type.getExtendedTypes().containsAll(expected.getExtendedTypes()));
-		Assert.assertTrue(expected.getTypeSuperTypes().containsAll(type.getTypeSuperTypes()));
+		Assert.assertTrue(expected.getExtendedTypes().containsAll(type.getExtendedTypes()));
 		
 		
 		Map<Version, String> typeChangelog = type.getChangelog();

src/test/java/org/gcube/informationsystem/model/impl/properties/PropagationConstraintTest.java

@@ -4,6 +4,7 @@ import java.util.Calendar;
 
 import org.gcube.informationsystem.base.reference.Element;
 import org.gcube.informationsystem.base.reference.IdentifiableElement;
+import org.gcube.informationsystem.model.reference.ERElement;
 import org.gcube.informationsystem.model.reference.entities.Facet;
 import org.gcube.informationsystem.model.reference.entities.Resource;
 import org.gcube.informationsystem.model.reference.properties.PropagationConstraint;
@@ -78,7 +79,7 @@ public class PropagationConstraintTest {
 		DeleteConstraint deleteConstraint = DeleteConstraint.keep;
 		String marshalled = "{\"" + 
 				Element.TYPE_PROPERTY + "\":\"MyPropagationConstraint\",\"" + 
-				Element.SUPERTYPES_PROPERTY + "\":[\"" + PropagationConstraint.NAME + "\", \"" + Property.NAME + "\"],\"" + 
+				ERElement.SUPERTYPES_PROPERTY + "\":[\"" + PropagationConstraint.NAME + "\", \"" + Property.NAME + "\"],\"" + 
 				PropagationConstraint.ADD_PROPERTY + "\":\""+ addConstraint + "\",\""+ 
 				PropagationConstraint.REMOVE_PROPERTY + "\":\"" + removeConstraint + "\",\""+ 
 				PropagationConstraint.DELETE_PROPERTY + "\":\"" + deleteConstraint +
@@ -109,7 +110,7 @@ public class PropagationConstraintTest {
 		
 		String pcString = "{" +
 				"\"" + Element.TYPE_PROPERTY + "\":\"My" + PropagationConstraint.NAME + "\"," +
-				"\"" + Element.SUPERTYPES_PROPERTY + "\":[\"" + PropagationConstraint.NAME + "\", \"" + Property.NAME + "\"],\"" + 
+				"\"" + ERElement.SUPERTYPES_PROPERTY + "\":[\"" + PropagationConstraint.NAME + "\", \"" + Property.NAME + "\"],\"" + 
 				PropagationConstraint.ADD_PROPERTY + "\":\""+ addConstraint + "\",\"" +
 				PropagationConstraint.REMOVE_PROPERTY + "\":\"" + removeConstraint + "\",\"" +
 				PropagationConstraint.DELETE_PROPERTY + "\":\"" + deleteConstraint + "\"" +
@@ -132,13 +133,13 @@ public class PropagationConstraintTest {
 			"\"" + ConsistsOf.SOURCE_PROPERTY + "\":{" +
 				"\"" + IdentifiableElement.ID_PROPERTY + "\":\"4a971915-ca90-48cf-9975-63ee2dd28605\"," +
 				"\"" + Element.TYPE_PROPERTY + "\":\"MyEService\"," +
-				"\"" + Element.SUPERTYPES_PROPERTY + "\":[\"EService\", \"Service\", \"Resource\"]," +
+				"\"" + ERElement.SUPERTYPES_PROPERTY + "\":[\"EService\", \"Service\", \"Resource\"]," +
 				"\"" + ConsistsOf.METADATA_PROPERTY + "\": " + hString +
 				"}," +
 			"\"" + ConsistsOf.TARGET_PROPERTY + "\":{" +
 				"\"" + IdentifiableElement.ID_PROPERTY + "\":\"3ace4bd0-e5cd-49a3-97a8-a0a9468ce6d4\"," +
 				"\"" + Element.TYPE_PROPERTY + "\":\"MySoftwareFacet\"," +
-				"\"" + Element.SUPERTYPES_PROPERTY + "\":[\"SoftwareFacet\", \"Facet\"]," +
+				"\"" + ERElement.SUPERTYPES_PROPERTY + "\":[\"SoftwareFacet\", \"Facet\"]," +
 				"\"" + ConsistsOf.METADATA_PROPERTY + "\": " + hString + "," + 
 				"\"name\":\"WhnManager\"," +
 				"\"group\":\"VREManagement\"," +