Update DataCite Kernel to 4.3; (DOECODE-802)

Author: sowerstl

src/main/java/gov/osti/doi/DataCite.java

@@ -239,7 +239,7 @@ private static void writeRelatedIdentifiers(XMLStreamWriter sw, List<RelatedIden
 
 
     /**
-     * Write a Metadata DOI request. (Now supporting schema 4.0)
+     * Write a Metadata DOI request. (Now supporting schema 4.3)
      * 
      * SET THE DOI TO THE DESIRED VALUE FIRST!
      * 
@@ -266,7 +266,7 @@ protected static String writeMetadata(DOECodeMetadata m) throws IOException, XML
         sw.writeDefaultNamespace("http://datacite.org/schema/kernel-4");
         sw.writeNamespace("xsi", "http://www.w3.org/2001/XMLSchema-instance");
         sw.writeAttribute("http://www.w3.org/2001/XMLSchema-instance", "schemaLocation",
-                "http://datacite.org/schema/kernel-4 http://schema.datacite.org/meta/kernel-4.1/metadata.xsd");
+                "http://datacite.org/schema/kernel-4 http://schema.datacite.org/meta/kernel-4.3/metadata.xsd"); 
 
         sw.writeStartElement("identifier");
         sw.writeAttribute("identifierType", "DOI");

src/main/java/gov/osti/entity/RelatedIdentifier.java

@@ -95,7 +95,9 @@ public enum RelationType implements Serializable {
         HasVersion("Has Version"),
         IsVersionOf("Is Version Of"),
         IsRequiredBy("Is Required By"),
-        Requires("Requires");
+        Requires("Requires"),
+        Obsoletes("Obsoletes"),
+        IsObsoletedBy("Is Obsoleted By");
 
         private final String label;
         private RelationType inverse;
@@ -132,6 +134,8 @@ public enum RelationType implements Serializable {
             IsVersionOf.inverse = HasVersion;
             IsRequiredBy.inverse = Requires;
             Requires.inverse = IsRequiredBy;
+            IsObsoletedBy.inverse = Obsoletes;
+            Obsoletes.inverse = IsObsoletedBy;
         }
 
         private RelationType(String label) {