WIP: using common definitions from ModelConstants

dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/common/ModelConstants.java

@@ -35,10 +35,22 @@ public class ModelConstants {
 	public static final String DNET_PROVENANCE_ACTIONS = "dnet:provenanceActions";
 	public static final String DNET_COUNTRY_TYPE = "dnet:countries";
 	public static final String DNET_REVIEW_LEVELS = "dnet:review_levels";
+	public static final String DNET_PROGRAMMING_LANGUAGES = "dnet:programming_languages";
+	public static final String DNET_PROVENANCEACTIONS = "dnet:provenanceActions";
+	public static final String DNET_EXTERNAL_REF_TYPES = "dnet:externalReference_typologies";
 
 	public static final String SYSIMPORT_CROSSWALK_REPOSITORY = "sysimport:crosswalk:repository";
 	public static final String SYSIMPORT_CROSSWALK_ENTITYREGISTRY = "sysimport:crosswalk:entityregistry";
+	public static final String SYSIMPORT_ACTIONSET = "sysimport:actionset";
+	public static final String SYSIMPORT_ORCID_NO_DOI = "sysimport:actionset:orcidworks-no-doi";
+
 	public static final String USER_CLAIM = "user:claim";
+	public static final String HARVESTED = "Harvested";
+
+	public static final String PROVENANCE_DEDUP = "sysimport:dedup";
+
+	public static final Qualifier PROVENANCE_ACTION_SET_QUALIFIER = qualifier(
+		SYSIMPORT_ACTIONSET, SYSIMPORT_ACTIONSET, DNET_PROVENANCEACTIONS, DNET_PROVENANCEACTIONS);
 
 	public static final String DATASET_RESULTTYPE_CLASSID = "dataset";
 	public static final String PUBLICATION_RESULTTYPE_CLASSID = "publication";
@@ -100,13 +112,6 @@ public class ModelConstants {
 	public static final String UNKNOWN = "UNKNOWN";
 	public static final String NOT_AVAILABLE = "not available";
 
-	public static final String ACTION_SET_SCHEME = "sysimport:actionset";
-
-	public static final String PROVENANCE_VOCABULARY = "dnet:provenanceActions";
-
-	public static final Qualifier ACTION_SET_PROVENANCE_QUALIFIER = qualifier(
-		ACTION_SET_SCHEME, ACTION_SET_SCHEME, PROVENANCE_VOCABULARY, PROVENANCE_VOCABULARY);
-
 	public static final Qualifier PUBLICATION_DEFAULT_RESULTTYPE = qualifier(
 		PUBLICATION_RESULTTYPE_CLASSID, PUBLICATION_RESULTTYPE_CLASSID,
 		DNET_RESULT_TYPOLOGIES, DNET_RESULT_TYPOLOGIES);
@@ -131,6 +136,7 @@ public class ModelConstants {
 		SYSIMPORT_CROSSWALK_ENTITYREGISTRY, SYSIMPORT_CROSSWALK_ENTITYREGISTRY,
 		DNET_PROVENANCE_ACTIONS, DNET_PROVENANCE_ACTIONS);
 
+	public static final String UNKNOWN_REPOSITORY_ORIGINALID = "openaire____::1256f046-bf1f-4afc-8b47-d0b147148b18";
 	public static final KeyValue UNKNOWN_REPOSITORY = keyValue(
 		"10|openaire____::55045bd2a65019fd8e6741a755395c8c", "Unknown Repository");
 

dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/common/ModelSupport.java

@@ -158,10 +158,10 @@ public class ModelSupport {
 		relationInverseMap
 			.put(
 				"organizationOrganization_dedupSimilarity_isSimilarTo", new RelationInverse()
-					.setInverse("isSimilarTo")
-					.setRelation("isSimilarTo")
-					.setRelType("organizationOrganization")
-					.setSubReltype("dedupSimilarity"));
+					.setInverse(ModelConstants.IS_SIMILAR_TO)
+					.setRelation(ModelConstants.IS_SIMILAR_TO)
+					.setRelType(ModelConstants.ORG_ORG_RELTYPE)
+					.setSubReltype(ModelConstants.DEDUP));
 
 		relationInverseMap
 			.put(
@@ -215,10 +215,10 @@ public class ModelSupport {
 		relationInverseMap
 			.put(
 				"personPerson_dedupSimilarity_isSimilarTo", new RelationInverse()
-					.setInverse("isSimilarTo")
-					.setRelation("isSimilarTo")
+					.setInverse(ModelConstants.IS_SIMILAR_TO)
+					.setRelation(ModelConstants.IS_SIMILAR_TO)
 					.setRelType("personPerson")
-					.setSubReltype("dedupSimilarity"));
+					.setSubReltype(ModelConstants.DEDUP));
 		relationInverseMap
 			.put(
 				"datasourceOrganization_provision_isProvidedBy", new RelationInverse()
@@ -239,14 +239,14 @@ public class ModelSupport {
 					.setInverse("isAmongTopNSimilarDocuments")
 					.setRelation("hasAmongTopNSimilarDocuments")
 					.setRelType(ModelConstants.RESULT_RESULT)
-					.setSubReltype("similarity"));
+					.setSubReltype(ModelConstants.SIMILARITY));
 		relationInverseMap
 			.put(
 				"resultResult_similarity_isAmongTopNSimilarDocuments", new RelationInverse()
 					.setInverse("hasAmongTopNSimilarDocuments")
 					.setRelation("isAmongTopNSimilarDocuments")
 					.setRelType(ModelConstants.RESULT_RESULT)
-					.setSubReltype("similarity"));
+					.setSubReltype(ModelConstants.SIMILARITY));
 		relationInverseMap
 			.put(
 				"resultResult_relationship_isRelatedTo", new RelationInverse()
@@ -299,10 +299,10 @@ public class ModelSupport {
 		relationInverseMap
 			.put(
 				"resultResult_dedupSimilarity_isSimilarTo", new RelationInverse()
-					.setInverse("isSimilarTo")
-					.setRelation("isSimilarTo")
+					.setInverse(ModelConstants.IS_SIMILAR_TO)
+					.setRelation(ModelConstants.IS_SIMILAR_TO)
 					.setRelType(ModelConstants.RESULT_RESULT)
-					.setSubReltype("dedupSimilarity"));
+					.setSubReltype(ModelConstants.DEDUP));
 
 	}
 

dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/scholexplorer/OafUtils.scala

@@ -1,5 +1,6 @@
 package eu.dnetlib.dhp.schema.scholexplorer
 
+import eu.dnetlib.dhp.schema.common.ModelConstants
 import eu.dnetlib.dhp.schema.oaf.{AccessRight, DataInfo, Field, KeyValue, Qualifier, StructuredProperty}
 
 object OafUtils {
@@ -21,7 +22,7 @@ object OafUtils {
     di.setInferred(false)
     di.setInvisible(invisible)
     di.setTrust(trust)
-    di.setProvenanceaction(createQualifier("sysimport:actionset", "dnet:provenanceActions"))
+    di.setProvenanceaction(createQualifier(ModelConstants.SYSIMPORT_ACTIONSET, ModelConstants.DNET_PROVENANCE_ACTIONS))
     di
   }
 

dhp-schemas/src/test/java/eu/dnetlib/dhp/schema/scholexplorer/DLItest.java

@@ -12,6 +12,7 @@ import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.SerializationFeature;
 
+import eu.dnetlib.dhp.schema.common.ModelConstants;
 import eu.dnetlib.dhp.schema.oaf.Qualifier;
 import eu.dnetlib.dhp.schema.oaf.StructuredProperty;
 
@@ -20,7 +21,7 @@ public class DLItest {
 	@Test
 	public void testMergePublication() throws JsonProcessingException {
 		DLIPublication a1 = new DLIPublication();
-		a1.setPid(Arrays.asList(createSP("123456", "pdb", "dnet:pid_types")));
+		a1.setPid(Arrays.asList(createSP("123456", "pdb", ModelConstants.DNET_PID_TYPES)));
 		a1.setTitle(Collections.singletonList(createSP("Un Titolo", "title", "dnetTitle")));
 		a1.setDlicollectedfrom(Arrays.asList(createCollectedFrom("znd", "Zenodo", "complete")));
 		a1.setCompletionStatus("complete");
@@ -30,8 +31,8 @@ public class DLItest {
 			.setPid(
 				Arrays
 					.asList(
-						createSP("10.11", "doi", "dnet:pid_types"),
-						createSP("123456", "pdb", "dnet:pid_types")));
+						createSP("10.11", "doi", ModelConstants.DNET_PID_TYPES),
+						createSP("123456", "pdb", ModelConstants.DNET_PID_TYPES)));
 		a.setTitle(Collections.singletonList(createSP("A Title", "title", "dnetTitle")));
 		a
 			.setDlicollectedfrom(

dhp-workflows/dhp-actionmanager/src/main/java/eu/dnetlib/dhp/actionmanager/migration/ProtoConverter.java

@@ -15,6 +15,7 @@ import com.google.common.collect.Lists;
 import com.googlecode.protobuf.format.JsonFormat;
 
 import eu.dnetlib.data.proto.*;
+import eu.dnetlib.dhp.schema.common.ModelConstants;
 import eu.dnetlib.dhp.schema.oaf.*;
 
 public class ProtoConverter implements Serializable {
@@ -106,8 +107,8 @@ public class ProtoConverter implements Serializable {
 		Qualifier q = new Qualifier();
 		q.setClassid(refereed.getValue());
 		q.setSchemename(refereed.getValue());
-		q.setSchemeid("dnet:review_levels");
-		q.setSchemename("dnet:review_levels");
+		q.setSchemeid(DNET_REVIEW_LEVELS);
+		q.setSchemename(DNET_REVIEW_LEVELS);
 		return q;
 	}
 

dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/datacite/DataciteToOAFTransformation.scala

@@ -23,8 +23,6 @@ import java.util.regex.Pattern
 import scala.collection.JavaConverters._
 import scala.io.{Codec, Source}
 
-
-
 case class DataciteType(doi:String,timestamp:Long,isActive:Boolean, json:String ){}
 
 case class NameIdentifiersType(nameIdentifierScheme: Option[String], schemeUri: Option[String], nameIdentifier: Option[String]) {}
@@ -49,10 +47,7 @@ object DataciteToOAFTransformation {
   codec.onMalformedInput(CodingErrorAction.REPLACE)
   codec.onUnmappableCharacter(CodingErrorAction.REPLACE)
 
-  val ACCESS_MODE_VOCABULARY = "dnet:access_modes"
   val DOI_CLASS = "doi"
-
-
   val SUBJ_CLASS = "keywords"
 
 
@@ -62,7 +57,7 @@ object DataciteToOAFTransformation {
   }
 
   val mapper = new ObjectMapper()
-  val unknown_repository: HostedByMapType = HostedByMapType("openaire____::1256f046-bf1f-4afc-8b47-d0b147148b18", "Unknown Repository", "Unknown Repository", Some(1.0F))
+  val unknown_repository: HostedByMapType = HostedByMapType(ModelConstants.UNKNOWN_REPOSITORY_ORIGINALID, ModelConstants.UNKNOWN_REPOSITORY.getValue, ModelConstants.UNKNOWN_REPOSITORY.getValue, Some(1.0F))
 
   val dataInfo: DataInfo = generateDataInfo("0.9")
   val DATACITE_COLLECTED_FROM: KeyValue = OafMapperUtils.keyValue(ModelConstants.DATACITE_ID, "Datacite")
@@ -244,9 +239,9 @@ object DataciteToOAFTransformation {
     val r = new Relation
     r.setSource(sourceId)
     r.setTarget(targetId)
-    r.setRelType("resultProject")
+    r.setRelType(ModelConstants.RESULT_PROJECT)
     r.setRelClass(relClass)
-    r.setSubRelType("outcome")
+    r.setSubRelType(ModelConstants.OUTCOME)
     r.setCollectedfrom(List(cf).asJava)
     r.setDataInfo(di)
     r
@@ -381,7 +376,7 @@ object DataciteToOAFTransformation {
     result.setRelevantdate(dates.filter(d => d.date.isDefined && d.dateType.isDefined)
       .map(d => (extract_date(d.date.get), d.dateType.get))
       .filter(d => d._1.isDefined)
-      .map(d => (d._1.get, vocabularies.getTermAsQualifier("dnet:dataCite_date", d._2.toLowerCase())))
+      .map(d => (d._1.get, vocabularies.getTermAsQualifier(ModelConstants.DNET_DATACITE_DATE, d._2.toLowerCase())))
       .filter(d => d._2 != null)
       .map(d => generateOAFDate(d._1, d._2)).asJava)
 
@@ -413,7 +408,7 @@ object DataciteToOAFTransformation {
     val language: String = (json \\ "language").extractOrElse[String](null)
 
     if (language != null)
-      result.setLanguage(vocabularies.getSynonymAsQualifier("dnet:languages", language))
+      result.setLanguage(vocabularies.getSynonymAsQualifier(ModelConstants.DNET_LANGUAGES, language))
 
 
     val instance = result.getInstance().get(0)
@@ -437,7 +432,7 @@ object DataciteToOAFTransformation {
     })
 
 
-    val access_rights_qualifier = if (aRights.isDefined) aRights.get else OafMapperUtils.accessRight("UNKNOWN", "not available", ModelConstants.DNET_ACCESS_MODES, ModelConstants.DNET_ACCESS_MODES)
+    val access_rights_qualifier = if (aRights.isDefined) aRights.get else OafMapperUtils.accessRight(ModelConstants.UNKNOWN, ModelConstants.NOT_AVAILABLE, ModelConstants.DNET_ACCESS_MODES, ModelConstants.DNET_ACCESS_MODES)
 
     if (client.isDefined) {
       val hb = hostedByMap.getOrElse(client.get.toUpperCase(), unknown_repository)
@@ -475,7 +470,7 @@ object DataciteToOAFTransformation {
     di.setInferred(false)
     di.setInvisible(false)
     di.setTrust(trust)
-    di.setProvenanceaction(ModelConstants.ACTION_SET_PROVENANCE_QUALIFIER)
+    di.setProvenanceaction(ModelConstants.PROVENANCE_ACTION_SET_QUALIFIER)
     di
   }
 

dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/util/BrokerConstants.java

@@ -7,12 +7,13 @@ import java.util.Set;
 
 import eu.dnetlib.dhp.broker.model.Event;
 import eu.dnetlib.dhp.broker.oa.util.aggregators.simple.ResultGroup;
+import eu.dnetlib.dhp.schema.common.ModelConstants;
 import eu.dnetlib.dhp.schema.common.ModelSupport;
 
 public class BrokerConstants {
 
 	public static final String OPEN_ACCESS = "OPEN";
-	public static final String IS_MERGED_IN_CLASS = "isMergedIn";
+	public static final String IS_MERGED_IN_CLASS = ModelConstants.IS_MERGED_IN;
 
 	public static final String COLLECTED_FROM_REL = "collectedFrom";
 

dhp-workflows/dhp-dedup-openaire/src/main/java/eu/dnetlib/dhp/oa/dedup/SparkCopyOpenorgsMergeRels.java

@@ -35,8 +35,6 @@ import net.sf.saxon.ma.trie.Tuple2;
 
 public class SparkCopyOpenorgsMergeRels extends AbstractSparkAction {
 	private static final Logger log = LoggerFactory.getLogger(SparkCopyOpenorgsMergeRels.class);
-	public static final String PROVENANCE_ACTION_CLASS = "sysimport:dedup";
-	public static final String DNET_PROVENANCE_ACTIONS = "dnet:provenanceActions";
 
 	public SparkCopyOpenorgsMergeRels(ArgumentApplicationParser parser, SparkSession spark) {
 		super(parser, spark);
@@ -93,7 +91,7 @@ public class SparkCopyOpenorgsMergeRels extends AbstractSparkAction {
 		JavaRDD<Relation> selfRawRels = rawRels
 			.map(r -> r.getSource())
 			.distinct()
-			.map(s -> rel(s, s, "isSimilarTo", dedupConf));
+			.map(s -> rel(s, s, ModelConstants.IS_SIMILAR_TO, dedupConf));
 
 		log.info("Number of raw Openorgs Relations collected: {}", rawRels.count());
 
@@ -109,8 +107,8 @@ public class SparkCopyOpenorgsMergeRels extends AbstractSparkAction {
 
 				List<Relation> mergerels = new ArrayList<>();
 
-				mergerels.add(rel(rel.getSource(), rel.getTarget(), "merges", dedupConf));
-				mergerels.add(rel(rel.getTarget(), rel.getSource(), "isMergedIn", dedupConf));
+				mergerels.add(rel(rel.getSource(), rel.getTarget(), ModelConstants.MERGES, dedupConf));
+				mergerels.add(rel(rel.getTarget(), rel.getSource(), ModelConstants.IS_MERGED_IN, dedupConf));
 
 				return mergerels.iterator();
 			});
@@ -174,10 +172,10 @@ public class SparkCopyOpenorgsMergeRels extends AbstractSparkAction {
 		info.setInvisible(false);
 		info.setInferenceprovenance(dedupConf.getWf().getConfigurationId());
 		Qualifier provenanceAction = new Qualifier();
-		provenanceAction.setClassid(PROVENANCE_ACTION_CLASS);
-		provenanceAction.setClassname(PROVENANCE_ACTION_CLASS);
-		provenanceAction.setSchemeid(DNET_PROVENANCE_ACTIONS);
-		provenanceAction.setSchemename(DNET_PROVENANCE_ACTIONS);
+		provenanceAction.setClassid(ModelConstants.PROVENANCE_DEDUP);
+		provenanceAction.setClassname(ModelConstants.PROVENANCE_DEDUP);
+		provenanceAction.setSchemeid(ModelConstants.DNET_PROVENANCE_ACTIONS);
+		provenanceAction.setSchemename(ModelConstants.DNET_PROVENANCE_ACTIONS);
 		info.setProvenanceaction(provenanceAction);
 
 		// TODO calculate the trust value based on the similarity score of the elements in the CC

dhp-workflows/dhp-dedup-scholexplorer/src/main/java/eu/dnetlib/dedup/SparkCreateConnectedComponent.java

@@ -22,6 +22,7 @@ import com.google.common.hash.Hashing;
 import eu.dnetlib.dedup.graph.ConnectedComponent;
 import eu.dnetlib.dedup.graph.GraphProcessor;
 import eu.dnetlib.dhp.application.ArgumentApplicationParser;
+import eu.dnetlib.dhp.schema.common.ModelConstants;
 import eu.dnetlib.dhp.schema.oaf.Oaf;
 import eu.dnetlib.dhp.schema.oaf.Relation;
 import eu.dnetlib.pace.config.DedupConfig;
@@ -47,8 +48,7 @@ public class SparkCreateConnectedComponent {
 		final String inputPath = parser.get("sourcePath");
 		final String entity = parser.get("entity");
 		final String targetPath = parser.get("targetPath");
-		// final DedupConfig dedupConf =
-		// DedupConfig.load(IOUtils.toString(SparkCreateConnectedComponent.class.getResourceAsStream("/eu/dnetlib/dhp/dedup/conf/org.curr.conf2.json")));
+
 		final DedupConfig dedupConf = DedupConfig.load(parser.get("dedupConf"));
 
 		final JavaPairRDD<Object, String> vertexes = spark
@@ -88,12 +88,12 @@ public class SparkCreateConnectedComponent {
 									Relation r = new Relation();
 									r.setSource(c.getCcId());
 									r.setTarget(id);
-									r.setRelClass("merges");
+									r.setRelClass(ModelConstants.MERGES);
 									tmp.add(r);
 									r = new Relation();
 									r.setTarget(c.getCcId());
 									r.setSource(id);
-									r.setRelClass("isMergedIn");
+									r.setRelClass(ModelConstants.IS_MERGED_IN);
 									tmp.add(r);
 									return tmp.stream();
 								})

dhp-workflows/dhp-doiboost/src/main/java/eu/dnetlib/doiboost/DoiBoostMappingUtil.scala

@@ -30,8 +30,6 @@ object DoiBoostMappingUtil {
   //STATIC STRING
   val MAG = "microsoft"
   val MAG_NAME = "Microsoft Academic Graph"
-  val ORCID = "orcid"
-  val ORCID_PENDING = "orcid_pending"
   val CROSSREF = "Crossref"
   val UNPAYWALL = "UnpayWall"
   val GRID_AC = "grid.ac"
@@ -39,8 +37,6 @@ object DoiBoostMappingUtil {
   val doiBoostNSPREFIX = "doiboost____"
   val OPENAIRE_PREFIX = "openaire____"
   val SEPARATOR = "::"
-  val DNET_LANGUAGES = "dnet:languages"
-  val PID_TYPES = "dnet:pid_types"
 
   val invalidName = List(",", "none none", "none, none", "none &na;", "(:null)", "test test test", "test test", "test", "&na; &na;")
 
@@ -122,12 +118,11 @@ object DoiBoostMappingUtil {
 
 
   def getOpenAccessQualifier():AccessRight = {
-    OafUtils.createAccessRight("OPEN","Open Access","dnet:access_modes", "dnet:access_modes")
+    OafUtils.createAccessRight("OPEN","Open Access", ModelConstants.DNET_ACCESS_MODES, ModelConstants.DNET_ACCESS_MODES)
   }
 
   def getRestrictedQualifier():AccessRight = {
-    OafUtils.createAccessRight("RESTRICTED","Restricted","dnet:access_modes", "dnet:access_modes")
-
+    OafUtils.createAccessRight("RESTRICTED","Restricted",ModelConstants.DNET_ACCESS_MODES, ModelConstants.DNET_ACCESS_MODES)
   }
 
 
@@ -141,14 +136,12 @@ object DoiBoostMappingUtil {
 
     val item = if (input._2 != null) input._2._2 else null
 
-
     val instanceType:Option[Instance] = extractInstance(publication)
 
     if (instanceType.isDefined) {
       publication.getInstance().asScala.foreach(i => i.setInstancetype(instanceType.get.getInstancetype))
     }
 
-
     publication.getInstance().asScala.foreach(i => {
       var hb = new KeyValue
       if (item != null) {
@@ -179,7 +172,6 @@ object DoiBoostMappingUtil {
     publication
   }
 
-
   def generateDSId(input: String): String = {
 
     val b = StringUtils.substringBefore(input, "::")
@@ -187,12 +179,10 @@ object DoiBoostMappingUtil {
     s"10|${b}::${DHPUtils.md5(a)}"
   }
 
-
   def generateDataInfo(): DataInfo = {
     generateDataInfo("0.9")
   }
 
-
   def filterPublication(publication: Publication): Boolean = {
 
     //Case empty publication
@@ -264,7 +254,7 @@ object DoiBoostMappingUtil {
     di.setInferred(false)
     di.setInvisible(false)
     di.setTrust(trust)
-    di.setProvenanceaction(OafUtils.createQualifier("sysimport:actionset", "dnet:provenanceActions"))
+    di.setProvenanceaction(OafUtils.createQualifier(ModelConstants.SYSIMPORT_ACTIONSET, ModelConstants.DNET_PROVENANCE_ACTIONS))
     di
   }
 
@@ -330,8 +320,8 @@ object DoiBoostMappingUtil {
   def createORIDCollectedFrom(): KeyValue = {
 
     val cf = new KeyValue
-    cf.setValue(ORCID)
-    cf.setKey("10|" + OPENAIRE_PREFIX + SEPARATOR + DHPUtils.md5(ORCID.toLowerCase))
+    cf.setValue(StringUtils.upperCase(ModelConstants.ORCID))
+    cf.setKey("10|" + OPENAIRE_PREFIX + SEPARATOR + DHPUtils.md5(ModelConstants.ORCID.toLowerCase))
     cf
 
   }

dhp-workflows/dhp-doiboost/src/main/java/eu/dnetlib/doiboost/crossref/Crossref2Oaf.scala

@@ -1,5 +1,6 @@
 package eu.dnetlib.doiboost.crossref
 
+import eu.dnetlib.dhp.schema.common.ModelConstants
 import eu.dnetlib.dhp.schema.oaf._
 import eu.dnetlib.dhp.schema.oaf.utils.IdentifierFactory
 import eu.dnetlib.dhp.utils.DHPUtils
@@ -14,7 +15,6 @@ import org.slf4j.{Logger, LoggerFactory}
 import scala.collection.JavaConverters._
 import scala.collection.mutable
 import scala.util.matching.Regex
-
 import eu.dnetlib.dhp.schema.scholexplorer.OafUtils
 
 case class CrossrefDT(doi: String, json:String, timestamp: Long) {}
@@ -88,7 +88,7 @@ case object Crossref2Oaf {
 
     //MAPPING Crossref DOI into PID
     val doi: String = (json \ "DOI").extract[String]
-    result.setPid(List(createSP(doi, "doi", PID_TYPES)).asJava)
+    result.setPid(List(createSP(doi, "doi", ModelConstants.DNET_PID_TYPES)).asJava)
 
     //MAPPING Crossref DOI into OriginalId
     //and Other Original Identifier of dataset like clinical-trial-number
@@ -186,13 +186,13 @@ case object Crossref2Oaf {
 
     if(has_review != JNothing) {
       instance.setRefereed(
-        OafUtils.createQualifier("0001", "peerReviewed", "dnet:review_levels", "dnet:review_levels"))
+        OafUtils.createQualifier("0001", "peerReviewed", ModelConstants.DNET_REVIEW_LEVELS, ModelConstants.DNET_REVIEW_LEVELS))
     }
 
 
     instance.setAccessright(getRestrictedQualifier())
     result.setInstance(List(instance).asJava)
-    instance.setInstancetype(OafUtils.createQualifier(cobjCategory.substring(0, 4), cobjCategory.substring(5), "dnet:publication_resource", "dnet:publication_resource"))
+    instance.setInstancetype(OafUtils.createQualifier(cobjCategory.substring(0, 4), cobjCategory.substring(5), ModelConstants.DNET_PUBLICATION_RESOURCE, ModelConstants.DNET_PUBLICATION_RESOURCE))
     result.setResourcetype(OafUtils.createQualifier(cobjCategory.substring(0, 4),"dnet:dataCite_resource"))
 
     instance.setCollectedfrom(createCrossrefCollectedFrom())
@@ -221,7 +221,7 @@ case object Crossref2Oaf {
     a.setFullname(s"$given $family")
     a.setRank(index+1)
     if (StringUtils.isNotBlank(orcid))
-      a.setPid(List(createSP(orcid, ORCID_PENDING, PID_TYPES, generateDataInfo())).asJava)
+      a.setPid(List(createSP(orcid, ModelConstants.ORCID_PENDING, ModelConstants.DNET_PID_TYPES, generateDataInfo())).asJava)
 
     a
   }

dhp-workflows/dhp-doiboost/src/main/java/eu/dnetlib/doiboost/mag/MagDataModel.scala

@@ -1,6 +1,7 @@
 package eu.dnetlib.doiboost.mag
 
 
+import eu.dnetlib.dhp.schema.common.ModelConstants
 import eu.dnetlib.dhp.schema.oaf.utils.IdentifierFactory
 import eu.dnetlib.dhp.schema.oaf.{Instance, Journal, Publication, StructuredProperty}
 import eu.dnetlib.doiboost.DoiBoostMappingUtil
@@ -191,7 +192,7 @@ case object ConversionUtil {
     val authors = inputParams._2
 
     val pub = new Publication
-    pub.setPid(List(createSP(paper.Doi.toLowerCase, "doi", PID_TYPES)).asJava)
+    pub.setPid(List(createSP(paper.Doi.toLowerCase, "doi", ModelConstants.DNET_PID_TYPES)).asJava)
     pub.setOriginalId(List(paper.PaperId.toString, paper.Doi.toLowerCase).asJava)
 
     //IMPORTANT
@@ -200,8 +201,8 @@ case object ConversionUtil {
 
     pub.setId(IdentifierFactory.createDOIBoostIdentifier(pub))
 
-    val mainTitles = createSP(paper.PaperTitle, "main title", "dnet:dataCite_title")
-    val originalTitles = createSP(paper.OriginalTitle, "alternative title", "dnet:dataCite_title")
+    val mainTitles = createSP(paper.PaperTitle, "main title", ModelConstants.DNET_DATACITE_TITLE)
+    val originalTitles = createSP(paper.OriginalTitle, "alternative title", ModelConstants.DNET_DATACITE_TITLE)
     pub.setTitle(List(mainTitles, originalTitles).asJava)
 
     pub.setSource(List(asField(paper.BookTitle)).asJava)
@@ -214,7 +215,7 @@ case object ConversionUtil {
         a.setFullname(f.author.DisplayName.get)
       if(f.affiliation!= null)
         a.setAffiliation(List(asField(f.affiliation)).asJava)
-      a.setPid(List(createSP(s"https://academic.microsoft.com/#/detail/${f.author.AuthorId}", "URL", PID_TYPES)).asJava)
+      a.setPid(List(createSP(s"https://academic.microsoft.com/#/detail/${f.author.AuthorId}", "URL", ModelConstants.DNET_PID_TYPES)).asJava)
       a
     }
     pub.setAuthor(authorsOAF.asJava)
@@ -253,14 +254,14 @@ case object ConversionUtil {
     val description = inputParams._2
 
     val pub = new Publication
-    pub.setPid(List(createSP(paper.Doi.toLowerCase, "doi", PID_TYPES)).asJava)
+    pub.setPid(List(createSP(paper.Doi.toLowerCase, "doi", ModelConstants.DNET_PID_TYPES)).asJava)
     pub.setOriginalId(List(paper.PaperId.toString, paper.Doi.toLowerCase).asJava)
 
     //Set identifier as 50 | doiboost____::md5(DOI)
     pub.setId(generateIdentifier(pub, paper.Doi.toLowerCase))
 
-    val mainTitles = createSP(paper.PaperTitle, "main title", "dnet:dataCite_title")
-    val originalTitles = createSP(paper.OriginalTitle, "alternative title", "dnet:dataCite_title")
+    val mainTitles = createSP(paper.PaperTitle, "main title", ModelConstants.DNET_DATACITE_TITLE)
+    val originalTitles = createSP(paper.OriginalTitle, "alternative title", ModelConstants.DNET_DATACITE_TITLE)
     pub.setTitle(List(mainTitles, originalTitles).asJava)
 
     pub.setSource(List(asField(paper.BookTitle)).asJava)
@@ -281,7 +282,7 @@ case object ConversionUtil {
         a.setAffiliation(List(asField(f.affiliation)).asJava)
 
 
-      a.setPid(List(createSP(s"https://academic.microsoft.com/#/detail/${f.author.AuthorId}", "URL", PID_TYPES)).asJava)
+      a.setPid(List(createSP(s"https://academic.microsoft.com/#/detail/${f.author.AuthorId}", "URL", ModelConstants.DNET_PID_TYPES)).asJava)
 
       a
 

dhp-workflows/dhp-doiboost/src/main/java/eu/dnetlib/doiboost/orcid/ORCIDToOAF.scala

@@ -1,11 +1,12 @@
 package eu.dnetlib.doiboost.orcid
 
 import com.fasterxml.jackson.databind.ObjectMapper
+import eu.dnetlib.dhp.schema.common.ModelConstants
 import eu.dnetlib.dhp.schema.oaf.utils.IdentifierFactory
 import eu.dnetlib.dhp.schema.oaf.{Author, DataInfo, Publication}
 import eu.dnetlib.dhp.schema.orcid.OrcidDOI
 import eu.dnetlib.doiboost.DoiBoostMappingUtil
-import eu.dnetlib.doiboost.DoiBoostMappingUtil.{ORCID, PID_TYPES, createSP, generateDataInfo, generateIdentifier}
+import eu.dnetlib.doiboost.DoiBoostMappingUtil.{createSP, generateDataInfo}
 import org.apache.commons.lang.StringUtils
 import org.slf4j.{Logger, LoggerFactory}
 
@@ -48,7 +49,7 @@ object ORCIDToOAF {
   def convertTOOAF(input:OrcidDOI) :Publication = {
     val doi = input.getDoi
     val pub:Publication = new Publication
-    pub.setPid(List(createSP(doi.toLowerCase, "doi", PID_TYPES)).asJava)
+    pub.setPid(List(createSP(doi.toLowerCase, "doi", ModelConstants.DNET_PID_TYPES)).asJava)
     pub.setDataInfo(generateDataInfo())
 
     pub.setId(IdentifierFactory.createDOIBoostIdentifier(pub))
@@ -74,8 +75,8 @@ object ORCIDToOAF {
 
   def generateOricPIDDatainfo():DataInfo = {
     val di =DoiBoostMappingUtil.generateDataInfo("0.91")
-    di.getProvenanceaction.setClassid("sysimport:crosswalk:entityregistry")
-    di.getProvenanceaction.setClassname("Harvested")
+    di.getProvenanceaction.setClassid(ModelConstants.SYSIMPORT_CROSSWALK_ENTITYREGISTRY)
+    di.getProvenanceaction.setClassname(ModelConstants.HARVESTED)
     di
   }
 
@@ -88,7 +89,7 @@ object ORCIDToOAF {
     else
       a.setFullname(s"$given $family")
     if (StringUtils.isNotBlank(orcid))
-      a.setPid(List(createSP(orcid, ORCID, PID_TYPES, generateOricPIDDatainfo())).asJava)
+      a.setPid(List(createSP(orcid, ModelConstants.ORCID, ModelConstants.DNET_PID_TYPES, generateOricPIDDatainfo())).asJava)
 
     a
   }

dhp-workflows/dhp-doiboost/src/main/java/eu/dnetlib/doiboost/orcidnodoi/oaf/PublicationToOaf.java

@@ -26,12 +26,11 @@ import eu.dnetlib.doiboost.orcidnodoi.util.Pair;
 /**
  * This class converts an orcid publication from json format to oaf
  */
-
 public class PublicationToOaf implements Serializable {
 
 	static Logger logger = LoggerFactory.getLogger(PublicationToOaf.class);
 
-	public static final String ORCID = "ORCID";
+	public static final String ORCID = StringUtils.upperCase(ModelConstants.ORCID);
 	public final static String orcidPREFIX = "orcid_______";
 	public static final String OPENAIRE_PREFIX = "openaire____";
 	public static final String SEPARATOR = "::";
@@ -70,7 +69,7 @@ public class PublicationToOaf implements Serializable {
 	private static Map<String, Pair<String, String>> datasources = new HashMap<String, Pair<String, String>>() {
 
 		{
-			put(ORCID.toLowerCase(), new Pair<>(ORCID, OPENAIRE_PREFIX + SEPARATOR + "orcid"));
+			put(ORCID.toLowerCase(), new Pair<>(ORCID, OPENAIRE_PREFIX + SEPARATOR + ModelConstants.ORCID));
 
 		}
 	};
@@ -135,8 +134,8 @@ public class PublicationToOaf implements Serializable {
 		dataInfo
 			.setProvenanceaction(
 				mapQualifier(
-					"sysimport:actionset:orcidworks-no-doi",
-					"sysimport:actionset:orcidworks-no-doi",
+					ModelConstants.SYSIMPORT_ORCID_NO_DOI,
+					ModelConstants.SYSIMPORT_ORCID_NO_DOI,
 					ModelConstants.DNET_PROVENANCE_ACTIONS,
 					ModelConstants.DNET_PROVENANCE_ACTIONS));
 		publication.setDataInfo(dataInfo);
@@ -183,15 +182,11 @@ public class PublicationToOaf implements Serializable {
 			}
 			return null;
 		}
-		Qualifier q = mapQualifier(
-			"main title", "main title", ModelConstants.DNET_DATACITE_TITLE, ModelConstants.DNET_DATACITE_TITLE);
 		publication
 			.setTitle(
 				titles
 					.stream()
-					.map(t -> {
-						return mapStructuredProperty(t, q, null);
-					})
+					.map(t -> mapStructuredProperty(t, ModelConstants.MAIN_TITLE_QUALIFIER, null))
 					.filter(s -> s != null)
 					.collect(Collectors.toList()));
 		// Adding identifier

dhp-workflows/dhp-doiboost/src/main/java/eu/dnetlib/doiboost/uw/UnpayWallToOAF.scala

@@ -79,7 +79,7 @@ object UnpayWallToOAF {
 
     if (oaLocation.license.isDefined)
       i.setLicense(asField(oaLocation.license.get))
-    pub.setPid(List(createSP(doi, "doi", PID_TYPES)).asJava)
+    pub.setPid(List(createSP(doi, "doi", ModelConstants.DNET_PID_TYPES)).asJava)
 
     // Ticket #6282 Adding open Access Colour
     if (colour.isDefined) {
@@ -90,7 +90,7 @@ object UnpayWallToOAF {
       a.setSchemename(ModelConstants.DNET_ACCESS_MODES)
       a.setOpenAccessRoute(colour.get)
       i.setAccessright(a)
-      i.setPid(List(createSP(doi, "doi", PID_TYPES)).asJava)
+      i.setPid(List(createSP(doi, "doi", ModelConstants.DNET_PID_TYPES)).asJava)
     }
     pub.setInstance(List(i).asJava)
 

dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/merge/MergeGraphTableSparkJob.java

@@ -25,6 +25,7 @@ import com.fasterxml.jackson.databind.ObjectMapper;
 import eu.dnetlib.dhp.application.ArgumentApplicationParser;
 import eu.dnetlib.dhp.common.HdfsSupport;
 import eu.dnetlib.dhp.oa.graph.clean.CleanGraphSparkJob;
+import eu.dnetlib.dhp.schema.common.ModelConstants;
 import eu.dnetlib.dhp.schema.common.ModelSupport;
 import eu.dnetlib.dhp.schema.oaf.*;
 import scala.Tuple2;
@@ -46,7 +47,7 @@ public class MergeGraphTableSparkJob {
 
 	static {
 		Qualifier compatibility = new Qualifier();
-		compatibility.setClassid("UNKNOWN");
+		compatibility.setClassid(ModelConstants.UNKNOWN);
 		DATASOURCE.setOpenairecompatibility(compatibility);
 	}
 

dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/OdfToOafMapper.java

@@ -13,6 +13,7 @@ import org.dom4j.Node;
 
 import eu.dnetlib.dhp.common.PacePerson;
 import eu.dnetlib.dhp.common.vocabulary.VocabularyGroup;
+import eu.dnetlib.dhp.schema.common.ModelConstants;
 import eu.dnetlib.dhp.schema.oaf.*;
 import eu.dnetlib.dhp.schema.oaf.utils.IdentifierFactory;
 
@@ -169,7 +170,7 @@ public class OdfToOafMapper extends AbstractMdRecordToOafMapper {
 				res
 					.add(
 						structuredProperty(
-							((Node) o).getText(), "UNKNOWN", "UNKNOWN", DNET_DATACITE_DATE, DNET_DATACITE_DATE,
+							((Node) o).getText(), UNKNOWN, UNKNOWN, DNET_DATACITE_DATE, DNET_DATACITE_DATE,
 							info));
 			} else {
 				res
@@ -242,7 +243,7 @@ public class OdfToOafMapper extends AbstractMdRecordToOafMapper {
 
 	@Override
 	protected Qualifier prepareSoftwareProgrammingLanguage(final Document doc, final DataInfo info) {
-		return prepareQualifier(doc, "//datacite:format", "dnet:programming_languages");
+		return prepareQualifier(doc, "//datacite:format", DNET_PROGRAMMING_LANGUAGES);
 	}
 
 	@Override

dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/sx/ebi/SparkAddLinkUpdates.scala

@@ -1,5 +1,6 @@
 package eu.dnetlib.dhp.sx.ebi
 import eu.dnetlib.dhp.application.ArgumentApplicationParser
+import eu.dnetlib.dhp.schema.common.ModelConstants
 import eu.dnetlib.dhp.schema.oaf.{Author, Instance, Journal, KeyValue, Oaf, Publication, Relation, Dataset => OafDataset}
 import eu.dnetlib.dhp.schema.scholexplorer.OafUtils.createQualifier
 import eu.dnetlib.dhp.schema.scholexplorer.{DLIDataset, DLIPublication, OafUtils, ProvenaceInfo}
@@ -50,7 +51,7 @@ case class EBILinks(relation:String, pubdate:String, tpid:String, tpidType:Strin
     val p = new DLIPublication
     p.setId(dnetPublicationId)
     p.setDataInfo(OafUtils.generateDataInfo())
-    p.setPid(List(OafUtils.createSP(input.getPmid.toLowerCase.trim, "pmid", "dnet:pid_types")).asJava)
+    p.setPid(List(OafUtils.createSP(input.getPmid.toLowerCase.trim, "pmid", ModelConstants.DNET_PID_TYPES)).asJava)
     p.setCompletionStatus("complete")
     val pi = new ProvenaceInfo
     pi.setId("dli_________::europe_pmc__")
@@ -76,13 +77,13 @@ case class EBILinks(relation:String, pubdate:String, tpid:String, tpidType:Strin
 
     if (input.getJournal != null)
       p.setJournal(journalToOAF(input.getJournal))
-    p.setTitle(List(OafUtils.createSP(input.getTitle, "main title", "dnet:dataCite_title")).asJava)
+    p.setTitle(List(OafUtils.createSP(input.getTitle, "main title", ModelConstants.DNET_DATACITE_TITLE)).asJava)
     p.setDateofacceptance(OafUtils.asField(input.getDate))
     val i = new Instance
     i.setCollectedfrom(generatePubmedDLICollectedFrom())
     i.setDateofacceptance(p.getDateofacceptance)
     i.setUrl(List(s"https://pubmed.ncbi.nlm.nih.gov/${input.getPmid}").asJava)
-    i.setInstancetype(createQualifier("0001", "Article", "dnet:publication_resource", "dnet:publication_resource"))
+    i.setInstancetype(createQualifier("0001", "Article", ModelConstants.DNET_PUBLICATION_RESOURCE, ModelConstants.DNET_PUBLICATION_RESOURCE))
     p.setInstance(List(i).asJava)
     p
   }
@@ -139,7 +140,7 @@ case class EBILinks(relation:String, pubdate:String, tpid:String, tpidType:Strin
       val d = new DLIDataset
       d.setId(targetDnetId)
       d.setDataInfo(OafUtils.generateDataInfo())
-      d.setPid(List(OafUtils.createSP(l.tpid.toLowerCase.trim, l.tpidType.toLowerCase.trim, "dnet:pid_types")).asJava)
+      d.setPid(List(OafUtils.createSP(l.tpid.toLowerCase.trim, l.tpidType.toLowerCase.trim, ModelConstants.DNET_PID_TYPES)).asJava)
       d.setCompletionStatus("complete")
       val pi = new ProvenaceInfo
       pi.setId("dli_________::europe_pmc__")
@@ -149,13 +150,13 @@ case class EBILinks(relation:String, pubdate:String, tpid:String, tpidType:Strin
       d.setDlicollectedfrom(List(pi).asJava)
       d.setCollectedfrom(List(generatePubmedDLICollectedFrom()).asJava)
       d.setPublisher(OafUtils.asField(l.publisher))
-      d.setTitle(List(OafUtils.createSP(l.title, "main title", "dnet:dataCite_title")).asJava)
+      d.setTitle(List(OafUtils.createSP(l.title, "main title", ModelConstants.DNET_DATACITE_TITLE)).asJava)
       d.setDateofacceptance(OafUtils.asField(l.pubdate))
       val i = new Instance
       i.setCollectedfrom(generatePubmedDLICollectedFrom())
       i.setDateofacceptance(d.getDateofacceptance)
       i.setUrl(List(l.turl).asJava)
-      i.setInstancetype(createQualifier("0021", "Dataset", "dnet:publication_resource", "dnet:publication_resource"))
+      i.setInstancetype(createQualifier("0021", "Dataset", ModelConstants.DNET_PUBLICATION_RESOURCE, ModelConstants.DNET_PUBLICATION_RESOURCE))
       d.setInstance(List(i).asJava)
       List(relation, inverseRelation, d)
     })

dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/sx/graph/parser/AbstractScholexplorerParser.java

@@ -13,6 +13,7 @@ import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 
 import eu.dnetlib.dhp.parser.utility.VtdUtilityParser;
+import eu.dnetlib.dhp.schema.common.ModelConstants;
 import eu.dnetlib.dhp.schema.oaf.*;
 import eu.dnetlib.dhp.schema.scholexplorer.DLIUnknown;
 import eu.dnetlib.dhp.schema.scholexplorer.ProvenaceInfo;
@@ -76,8 +77,8 @@ public abstract class AbstractScholexplorerParser {
 			final Qualifier pidType = new Qualifier();
 			pidType.setClassname(result.getAttributes().get(fieldName));
 			pidType.setClassid(result.getAttributes().get(fieldName));
-			pidType.setSchemename("dnet:pid_types");
-			pidType.setSchemeid("dnet:pid_types");
+			pidType.setSchemename(ModelConstants.DNET_PID_TYPES);
+			pidType.setSchemeid(ModelConstants.DNET_PID_TYPES);
 			pid.setQualifier(pidType);
 			return pid;
 		}
@@ -90,8 +91,8 @@ public abstract class AbstractScholexplorerParser {
 			input.setValue(matcher.group());
 			if (input.getQualifier() == null) {
 				input.setQualifier(new Qualifier());
-				input.getQualifier().setSchemename("dnet:pid_types");
-				input.getQualifier().setSchemeid("dnet:pid_types");
+				input.getQualifier().setSchemename(ModelConstants.DNET_PID_TYPES);
+				input.getQualifier().setSchemeid(ModelConstants.DNET_PID_TYPES);
 			}
 			input.getQualifier().setClassid("doi");
 			input.getQualifier().setClassname("doi");
@@ -141,8 +142,8 @@ public abstract class AbstractScholexplorerParser {
 		final Qualifier pt = new Qualifier();
 		pt.setClassname(pidType);
 		pt.setClassid(pidType);
-		pt.setSchemename("dnet:pid_types");
-		pt.setSchemeid("dnet:pid_types");
+		pt.setSchemename(ModelConstants.DNET_PID_TYPES);
+		pt.setSchemeid(ModelConstants.DNET_PID_TYPES);
 		sourcePid.setQualifier(pt);
 		uk.setPid(Collections.singletonList(sourcePid));
 		uk.setDateofcollection(dateOfCollection);

dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/sx/graph/parser/DatasetScholexplorerParser.java

@@ -15,6 +15,7 @@ import com.ximpleware.VTDNav;
 
 import eu.dnetlib.dhp.parser.utility.VtdUtilityParser;
 import eu.dnetlib.dhp.parser.utility.VtdUtilityParser.Node;
+import eu.dnetlib.dhp.schema.common.ModelConstants;
 import eu.dnetlib.dhp.schema.oaf.*;
 import eu.dnetlib.dhp.schema.scholexplorer.DLIDataset;
 import eu.dnetlib.dhp.schema.scholexplorer.ProvenaceInfo;
@@ -281,11 +282,7 @@ public class DatasetScholexplorerParser extends AbstractScholexplorerParser {
 								t -> {
 									final StructuredProperty st = new StructuredProperty();
 									st.setValue(t);
-									st
-										.setQualifier(
-											generateQualifier(
-												"main title", "main title", "dnet:dataCite_title",
-												"dnet:dataCite_title"));
+									st.setQualifier(ModelConstants.MAIN_TITLE_QUALIFIER);
 									return st;
 								})
 							.collect(Collectors.toList()));

dhp-workflows/dhp-graph-provision-scholexplorer/src/main/java/eu/dnetlib/dhp/export/DLIToOAF.scala

@@ -159,7 +159,7 @@ object DLIToOAF {
       result.setUrl(e.url)
       result.setRefidentifier(e.pid)
       result.setDataInfo(generateDataInfo())
-      result.setQualifier(createQualifier(e.classId, "dnet:externalReference_typologies"))
+      result.setQualifier(createQualifier(e.classId, ModelConstants.DNET_EXTERNAL_REF_TYPES))
       result
     })
     publication.setExternalReference(eRefs.asJava)
@@ -238,7 +238,7 @@ object DLIToOAF {
     if (inputPublication.getAuthor == null || inputPublication.getAuthor.isEmpty)
       return null
     result.setAuthor(inputPublication.getAuthor.asScala.map(convertAuthor).asJava)
-    result.setResulttype(createQualifier(inputPublication.getResulttype.getClassid, inputPublication.getResulttype.getClassname, "dnet:result_typologies", "dnet:result_typologies"))
+    result.setResulttype(createQualifier(inputPublication.getResulttype.getClassid, inputPublication.getResulttype.getClassname, ModelConstants.DNET_RESULT_TYPOLOGIES, ModelConstants.DNET_RESULT_TYPOLOGIES))
 
     if (inputPublication.getSubject != null)
       result.setSubject(inputPublication.getSubject.asScala.map(convertSubject).asJava)
@@ -259,7 +259,7 @@ object DLIToOAF {
     result.setDateofacceptance(asField(inputPublication.getRelevantdate.get(0).getValue))
     result.setPublisher(inputPublication.getPublisher)
     result.setSource(inputPublication.getSource)
-    result.setBestaccessright(createAccessRight("UNKNOWN", "not available", "dnet:access_modes", "dnet:access_modes"))
+    result.setBestaccessright(createAccessRight(ModelConstants.UNKNOWN, ModelConstants.NOT_AVAILABLE, ModelConstants.DNET_ACCESS_MODES, ModelConstants.DNET_ACCESS_MODES))
 
     val dois = result.getPid.asScala.filter(p => "doi".equalsIgnoreCase(p.getQualifier.getClassname)).map(p => p.getValue)
     if (dois.isEmpty)
@@ -390,7 +390,7 @@ object DLIToOAF {
   }
 
   def patchTitle(t: StructuredProperty): StructuredProperty = {
-    t.setQualifier(createQualifier("main title", ModelConstants.DNET_DATACITE_TITLE))
+    t.setQualifier(ModelConstants.MAIN_TITLE_QUALIFIER)
     t
   }
 

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

@@ -18,7 +18,7 @@ public class RelationComparator implements Comparator<Relation> {
 	static {
 		weights.put(ModelConstants.OUTCOME, 0);
 		weights.put(ModelConstants.SUPPLEMENT, 1);
-		weights.put(ModelConstants.REVIEWS, 2);
+		weights.put(ModelConstants.REVIEW, 2);
 		weights.put(ModelConstants.CITATION, 3);
 		weights.put(ModelConstants.AFFILIATION, 4);
 		weights.put(ModelConstants.RELATIONSHIP, 5);