modification to the model due to change in the mapping

dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/dump/gcat/CatalogueEntry.java

@@ -14,8 +14,26 @@ public class CatalogueEntry implements Serializable {
 	private String notes; // description.value (the first description
 	private String url; // the url of the resource in the openaire dashboard
 	private String version; // valid for datasets
+	private List<Tag> tags; // subject and keywords
+	private List<Group> groups; // access and publishers
 	private List<KeyValue> extras;
 
+	public List<Group> getGroups() {
+		return groups;
+	}
+
+	public void setGroups(List<Group> groups) {
+		this.groups = groups;
+	}
+
+	public List<Tag> getTags() {
+		return tags;
+	}
+
+	public void setTags(List<Tag> tags) {
+		this.tags = tags;
+	}
+
 	public String getVersion() {
 		return version;
 	}

dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/dump/gcat/Group.java

@@ -1,4 +1,37 @@
+
 package eu.dnetlib.dhp.schema.dump.gcat;
 
-public class Group {
+import java.io.Serializable;
+
+public class Group implements Serializable {
+	private String id;
+	private String name;
+
+	public String getId() {
+		return id;
+	}
+
+	public void setId(String id) {
+		this.id = id;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public static Group newInstance(String id, String name) {
+		Group g = new Group();
+		if (id != null) {
+			g.id = id;
+		}
+		if (name != null) {
+			g.name = name;
+		}
+
+		return g;
+	}
 }

dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/dump/gcat/Tag.java

@@ -1,4 +1,24 @@
+
 package eu.dnetlib.dhp.schema.dump.gcat;
 
-public class Tag {
+import java.io.Serializable;
+
+import com.fasterxml.jackson.core.SerializableString;
+
+public class Tag implements Serializable {
+	private String name;
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public static Tag newInstance(String n) {
+		Tag t = new Tag();
+		t.name = n;
+		return t;
+	}
 }