serialisation of APCs int he XML records

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

@@ -398,6 +398,16 @@ public class XmlRecordFactory implements Serializable {
 			if (r.getResourcetype() != null) {
 				metadata.add(XmlSerializationUtils.mapQualifier("resourcetype", r.getResourcetype()));
 			}
+			if (r.getProcessingchargeamount() != null) {
+				metadata
+					.add(
+						XmlSerializationUtils
+							.asXmlElement("processingchargeamount", r.getProcessingchargeamount().getValue()));
+				metadata
+					.add(
+						XmlSerializationUtils
+							.asXmlElement("processingchargecurrency", r.getProcessingchargecurrency().getValue()));
+			}
 		}
 
 		switch (type) {

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

@@ -66,6 +66,9 @@ public class XmlRecordFactoryTest {
 		assertEquals("10.5689/LIB.2018.2853550", doc.valueOf("//instance/alternateidentifier/text()"));
 
 		assertEquals(3, doc.selectNodes("//instance").size());
+
+		assertEquals("1721.47", doc.valueOf("//processingchargeamount/text()"));
+		assertEquals("EUR", doc.valueOf("//processingchargecurrency/text()"));
 	}
 
 	@Test

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

@@ -1655,5 +1655,37 @@
       },
       "value": "Understanding Electromigration in Cu-CNT Composite Interconnects A Multiscale Electrothermal Simulation Study"
     }
-  ]
+  ],
+  "processingchargeamount": {
+    "value": "1721.47",
+    "dataInfo": {
+      "invisible": true,
+      "inferred": false,
+      "deletedbyinference": false,
+      "trust": "0.9",
+      "inferenceprovenance": "",
+      "provenanceaction": {
+        "classid": "sysimport:crosswalk:datasetarchive",
+        "classname": "sysimport:crosswalk:datasetarchive",
+        "schemeid": "dnet:provenanceActions",
+        "schemename": "dnet:provenanceActions"
+      }
+    }
+  },
+  "processingchargecurrency": {
+    "value": "EUR",
+    "dataInfo": {
+      "invisible": true,
+      "inferred": false,
+      "deletedbyinference": false,
+      "trust": "0.9",
+      "inferenceprovenance": "",
+      "provenanceaction": {
+        "classid": "sysimport:crosswalk:datasetarchive",
+        "classname": "sysimport:crosswalk:datasetarchive",
+        "schemeid": "dnet:provenanceActions",
+        "schemename": "dnet:provenanceActions"
+      }
+    }
+  }
 }