diff --git a/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRDescriptionsMetadata.java b/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRDescriptionsMetadata.java
index 3fd8e8a..a571f3d 100644
--- a/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRDescriptionsMetadata.java
+++ b/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRDescriptionsMetadata.java
@@ -12,6 +12,10 @@ import java.util.ArrayList;
 public class TRDescriptionsMetadata implements TRMetadata {
 	private static final long serialVersionUID = -2663624208642658528L;
 
+	
+	String id="DescriptionsMetadata";
+	String title="Descriptions";
+	
 	 ArrayList<TRLocalizedText> listTRLocalizedText;
 
 	public ArrayList<TRLocalizedText> getListTRLocalizedText() {
@@ -27,6 +31,16 @@ public class TRDescriptionsMetadata implements TRMetadata {
 		return "TRDescriptionsMetadata [listTRLocalizedText=" + listTRLocalizedText
 				+ "]";
 	}
+
+	@Override
+	public String getId() {
+		return id;
+	}
+
+	@Override
+	public String getTitle() {
+		return title;
+	}
 	 
 	 
 
diff --git a/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRExportMetadata.java b/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRExportMetadata.java
index 55f339a..4c69845 100644
--- a/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRExportMetadata.java
+++ b/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRExportMetadata.java
@@ -12,6 +12,9 @@ import java.util.Date;
 public class TRExportMetadata implements TRMetadata {
 	private static final long serialVersionUID = -2663624208642658528L;
 	
+	String id="ExportMetadata";
+	String title="Export";
+	
 	private String destinationType;
 	private String url;
 	private Date exportDate;
@@ -39,6 +42,14 @@ public class TRExportMetadata implements TRMetadata {
 		return "TRExportMetadata [destinationType=" + destinationType
 				+ ", url=" + url + ", exportDate=" + exportDate + "]";
 	}
+	@Override
+	public String getId() {
+		return id;
+	}
+	@Override
+	public String getTitle() {
+		return title;
+	}
 	
 	
 	
diff --git a/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRGenericMapMetadata.java b/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRGenericMapMetadata.java
index 4e36d81..7130ed2 100644
--- a/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRGenericMapMetadata.java
+++ b/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRGenericMapMetadata.java
@@ -12,6 +12,9 @@ import java.util.HashMap;
 public class TRGenericMapMetadata implements TRMetadata {
 	private static final long serialVersionUID = -2663624208642658528L;
 
+	String id="GenericMapMetadata";
+	String title="Generic Map";
+	
 	private HashMap<String, String> metadataMap = new HashMap<String, String>();
 
 	public HashMap<String, String> getMetadataMap() {
@@ -26,6 +29,16 @@ public class TRGenericMapMetadata implements TRMetadata {
 	public String toString() {
 		return "TRGenericMapMetadata [metadataMap=" + metadataMap + "]";
 	}
+
+	@Override
+	public String getId() {
+		return id;
+	}
+
+	@Override
+	public String getTitle() {
+		return title;
+	}
 	
 	
 	
diff --git a/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRImportMetadata.java b/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRImportMetadata.java
index 06f510d..f8d5139 100644
--- a/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRImportMetadata.java
+++ b/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRImportMetadata.java
@@ -11,6 +11,9 @@ import java.util.Date;
 public class TRImportMetadata implements TRMetadata {
 	private static final long serialVersionUID = -2663624208642658528L;
 
+	String id="ImportMetadata";
+	String title="Import";
+	
 	private String sourceType;
 	private String url;
 	private Date importDate;
@@ -45,4 +48,14 @@ public class TRImportMetadata implements TRMetadata {
 				+ ", importDate=" + importDate + "]";
 	}
 
+	@Override
+	public String getId() {
+		return id;
+	}
+
+	@Override
+	public String getTitle() {
+		return title;
+	}
+
 }
diff --git a/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRMetadata.java b/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRMetadata.java
index 7821257..112b3a8 100644
--- a/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRMetadata.java
+++ b/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRMetadata.java
@@ -11,5 +11,8 @@ import java.io.Serializable;
  */
 public interface TRMetadata extends Serializable {
 	
+	public String getId();
+	public String getTitle();
+	
 	
 }
diff --git a/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRNamesMetadata.java b/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRNamesMetadata.java
index 183acd7..39264dc 100644
--- a/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRNamesMetadata.java
+++ b/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRNamesMetadata.java
@@ -13,6 +13,9 @@ public class TRNamesMetadata implements TRMetadata {
 	
 	private static final long serialVersionUID = 7635332011036656032L;
 	
+	String id="NamesMetadata";
+	String title="Names";
+	
 	ArrayList<TRLocalizedText> listTRLocalizedText;
 
 	public ArrayList<TRLocalizedText> getListTRLocalizedText() {
@@ -27,6 +30,16 @@ public class TRNamesMetadata implements TRMetadata {
 	public String toString() {
 		return "TRNamesMetadata [listTRLocalizedText=" + listTRLocalizedText + "]";
 	}
+
+	@Override
+	public String getId() {
+		return id;
+	}
+
+	@Override
+	public String getTitle() {
+		return title;
+	}
 	 
 	 
 
diff --git a/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRVersionMetadata.java b/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRVersionMetadata.java
index c53a8f9..9fba299 100644
--- a/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRVersionMetadata.java
+++ b/src/main/java/org/gcube/portlets/user/td/gwtservice/shared/tr/metadata/TRVersionMetadata.java
@@ -13,6 +13,9 @@ public class TRVersionMetadata implements TRMetadata {
 	
 	private static final long serialVersionUID = 5208229342328376604L;
 
+	String id="VersionMetadata";
+	String title="Version";
+	
 	private String version;
 
 	public String getVersion() {
@@ -27,6 +30,16 @@ public class TRVersionMetadata implements TRMetadata {
 	public String toString() {
 		return "TRVersionMetadata [version=" + version + "]";
 	}
+
+	@Override
+	public String getId() {
+		return id;
+	}
+
+	@Override
+	public String getTitle() {
+		return title;
+	}
 	
 	
 }