added serialization for alternateIdentifiers and pids within each record instance

dhp-workflows/dhp-graph-provision/src/main/java/eu/dnetlib/dhp/oa/provision/utils/XmlRecordFactory.java

@@ -1160,6 +1160,27 @@ public class XmlRecordFactory implements Serializable {
 									.asXmlElement(
 										"distributionlocation", instance.getDistributionlocation()));
 					}
+					if (instance.getPid() != null) {
+						fields
+							.addAll(
+								instance
+									.getPid()
+									.stream()
+									.filter(Objects::nonNull)
+									.map(p -> XmlSerializationUtils.mapStructuredProperty("pid", p))
+									.collect(Collectors.toList()));
+					}
+					if (instance.getAlternateIdentifier() != null) {
+						fields
+							.addAll(
+								instance
+									.getAlternateIdentifier()
+									.stream()
+									.filter(Objects::nonNull)
+									.map(p -> XmlSerializationUtils.mapStructuredProperty("alternateidentifier", p))
+									.collect(Collectors.toList()));
+					}
+
 					if (instance.getRefereed() != null && !instance.getRefereed().isBlank()) {
 						fields
 							.add(

dhp-workflows/dhp-graph-provision/src/test/java/eu/dnetlib/dhp/oa/provision/XmlRecordFactoryTest.java

@@ -61,6 +61,11 @@ public class XmlRecordFactoryTest {
 		Assertions.assertEquals("0000-0001-9613-9956", doc.valueOf("//creator[@rank = '2']/@orcid"));
 		Assertions.assertEquals("", doc.valueOf("//creator[@rank = '2']/@orcid_pending"));
 
+		Assertions.assertEquals("doi", doc.valueOf("//instance/pid/@classid"));
+		Assertions.assertEquals("10.1109/TED.2018.2853550", doc.valueOf("//instance/pid/text()"));
+
+		Assertions.assertEquals("doi", doc.valueOf("//instance/alternateidentifier/@classid"));
+		Assertions.assertEquals("10.5689/LIB.2018.2853550", doc.valueOf("//instance/alternateidentifier/text()"));
 		// TODO add assertions based of values extracted from the XML record
 	}
 

dhp-workflows/dhp-graph-provision/src/test/resources/eu/dnetlib/dhp/oa/provision/publication.json

@@ -284,6 +284,54 @@
   "id": "50|CSC_________::0000ec4dd9df012feaafa77e71a0fb4c",
   "instance": [
     {
+      "pid": [
+        {
+          "dataInfo": {
+            "deletedbyinference": false,
+            "inferenceprovenance": "",
+            "inferred": false,
+            "invisible": false,
+            "provenanceaction": {
+              "classid": "",
+              "classname": "",
+              "schemeid": "",
+              "schemename": ""
+            },
+            "trust": ""
+          },
+          "qualifier": {
+            "classid": "doi",
+            "classname": "doi",
+            "schemeid": "dnet:pid_types",
+            "schemename": "dnet:pid_types"
+          },
+          "value": "10.1109/TED.2018.2853550"
+        }
+      ],
+      "alternateIdentifier": [
+        {
+          "dataInfo": {
+            "deletedbyinference": false,
+            "inferenceprovenance": "",
+            "inferred": false,
+            "invisible": false,
+            "provenanceaction": {
+              "classid": "",
+              "classname": "",
+              "schemeid": "",
+              "schemename": ""
+            },
+            "trust": ""
+          },
+          "qualifier": {
+            "classid": "doi",
+            "classname": "doi",
+            "schemeid": "dnet:pid_types",
+            "schemename": "dnet:pid_types"
+          },
+          "value": "10.5689/LIB.2018.2853550"
+        }
+      ],
       "accessright": {
         "classid": "OPEN",
         "classname": "Open Access",