relations with multiple datasources

dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/model/EventFactory.java

@@ -11,6 +11,8 @@ import org.apache.commons.lang3.StringUtils;
 import org.apache.commons.lang3.time.DateUtils;
 
 import eu.dnetlib.broker.objects.OaBrokerMainEntity;
+import eu.dnetlib.broker.objects.OaBrokerRelatedDatasource;
+import eu.dnetlib.dhp.broker.oa.util.BrokerConstants;
 import eu.dnetlib.dhp.broker.oa.util.UpdateInfo;
 
 public class EventFactory {
@@ -52,9 +54,11 @@ public class EventFactory {
 		final OaBrokerMainEntity source = updateInfo.getSource();
 		final OaBrokerMainEntity target = updateInfo.getTarget();
 
-		map.setTargetDatasourceId(target.getCollectedFromId());
+		final OaBrokerRelatedDatasource targetDs = updateInfo.getTargetDs();
-		map.setTargetDatasourceName(target.getCollectedFromName());
+
-		map.setTargetDatasourceType(target.getCollectedFromType());
+		map.setTargetDatasourceId(targetDs.getOpenaireId());
+		map.setTargetDatasourceName(targetDs.getName());
+		map.setTargetDatasourceType(targetDs.getType());
 
 		map.setTargetResultId(target.getOpenaireId());
 
@@ -73,11 +77,19 @@ public class EventFactory {
 
 		// PROVENANCE INFO
 		map.setTrust(updateInfo.getTrust());
-		map.setProvenanceDatasourceId(source.getCollectedFromId());
-		map.setProvenanceDatasourceName(source.getCollectedFromName());
-		map.setProvenanceDatasourceType(source.getCollectedFromType());
 		map.setProvenanceResultId(source.getOpenaireId());
 
+		source
+			.getDatasources()
+			.stream()
+			.filter(ds -> ds.getRelType().equals(BrokerConstants.COLLECTED_FROM_REL))
+			.findFirst()
+			.ifPresent(ds -> {
+				map.setProvenanceDatasourceId(ds.getOpenaireId());
+				map.setProvenanceDatasourceName(ds.getName());
+				map.setProvenanceDatasourceType(ds.getType());
+			});
+
 		return map;
 	}
 

dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/JoinStep0Job.java

@@ -17,8 +17,8 @@ import org.slf4j.LoggerFactory;
 import eu.dnetlib.broker.objects.OaBrokerMainEntity;
 import eu.dnetlib.dhp.application.ArgumentApplicationParser;
 import eu.dnetlib.dhp.broker.oa.util.ClusterUtils;
-import eu.dnetlib.dhp.broker.oa.util.aggregators.withRels.AddDatasourceTypeAggregator;
+import eu.dnetlib.dhp.broker.oa.util.aggregators.withRels.RelatedDatasource;
-import eu.dnetlib.dhp.broker.oa.util.aggregators.withRels.SimpleDatasourceInfo;
+import eu.dnetlib.dhp.broker.oa.util.aggregators.withRels.RelatedDatasourceAggregator;
 import scala.Tuple2;
 
 public class JoinStep0Job {
@@ -45,33 +45,33 @@ public class JoinStep0Job {
 		final String workingPath = parser.get("workingPath");
 		log.info("workingPath: {}", workingPath);
 
-		final String outputPath = workingPath + "/joinedEntities_step0";
+		final String joinedEntitiesPath = workingPath + "/joinedEntities_step0";
-		log.info("outputPath: {}", outputPath);
+		log.info("joinedEntitiesPath: {}", joinedEntitiesPath);
 
 		final SparkConf conf = new SparkConf();
 
 		runWithSparkSession(conf, isSparkSessionManaged, spark -> {
 
-			ClusterUtils.removeDir(spark, outputPath);
+			ClusterUtils.removeDir(spark, joinedEntitiesPath);
 
 			final LongAccumulator total = spark.sparkContext().longAccumulator("total_entities");
 
 			final Dataset<OaBrokerMainEntity> sources = ClusterUtils
 				.readPath(spark, workingPath + "/simpleEntities", OaBrokerMainEntity.class);
 
-			final Dataset<SimpleDatasourceInfo> datasources = ClusterUtils
+			final Dataset<RelatedDatasource> typedRels = ClusterUtils
-				.readPath(spark, workingPath + "/datasources", SimpleDatasourceInfo.class);
+				.readPath(spark, workingPath + "/relatedDatasources", RelatedDatasource.class);
 
-			final TypedColumn<Tuple2<OaBrokerMainEntity, SimpleDatasourceInfo>, OaBrokerMainEntity> aggr = new AddDatasourceTypeAggregator()
+			final TypedColumn<Tuple2<OaBrokerMainEntity, RelatedDatasource>, OaBrokerMainEntity> aggr = new RelatedDatasourceAggregator()
 				.toColumn();
 
 			final Dataset<OaBrokerMainEntity> dataset = sources
-				.joinWith(datasources, sources.col("collectedFromId").equalTo(datasources.col("id")), "inner")
+				.joinWith(typedRels, sources.col("openaireId").equalTo(typedRels.col("source")), "left_outer")
 				.groupByKey(t -> t._1.getOpenaireId(), Encoders.STRING())
 				.agg(aggr)
 				.map(t -> t._2, Encoders.bean(OaBrokerMainEntity.class));
 
-			ClusterUtils.save(dataset, outputPath, OaBrokerMainEntity.class, total);
+			ClusterUtils.save(dataset, joinedEntitiesPath, OaBrokerMainEntity.class, total);
 
 		});
 

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

@@ -9,14 +9,23 @@ import org.apache.commons.io.IOUtils;
 import org.apache.spark.SparkConf;
 import org.apache.spark.sql.Dataset;
 import org.apache.spark.sql.Encoders;
+import org.apache.spark.sql.SparkSession;
 import org.apache.spark.util.LongAccumulator;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import eu.dnetlib.broker.objects.OaBrokerRelatedDatasource;
 import eu.dnetlib.dhp.application.ArgumentApplicationParser;
 import eu.dnetlib.dhp.broker.oa.util.ClusterUtils;
-import eu.dnetlib.dhp.broker.oa.util.aggregators.withRels.SimpleDatasourceInfo;
+import eu.dnetlib.dhp.broker.oa.util.ConversionUtils;
+import eu.dnetlib.dhp.broker.oa.util.DatasourceRelationsAccumulator;
+import eu.dnetlib.dhp.broker.oa.util.aggregators.withRels.RelatedDatasource;
 import eu.dnetlib.dhp.schema.oaf.Datasource;
+import eu.dnetlib.dhp.schema.oaf.OtherResearchProduct;
+import eu.dnetlib.dhp.schema.oaf.Publication;
+import eu.dnetlib.dhp.schema.oaf.Result;
+import eu.dnetlib.dhp.schema.oaf.Software;
+import scala.Tuple3;
 
 public class PrepareRelatedDatasourcesJob {
 
@@ -42,7 +51,7 @@ public class PrepareRelatedDatasourcesJob {
 		final String workingPath = parser.get("workingPath");
 		log.info("workingPath: {}", workingPath);
 
-		final String relsPath = workingPath + "/datasources";
+		final String relsPath = workingPath + "/relatedDatasources";
 		log.info("relsPath: {}", relsPath);
 
 		final SparkConf conf = new SparkConf();
@@ -53,16 +62,46 @@ public class PrepareRelatedDatasourcesJob {
 
 			final LongAccumulator total = spark.sparkContext().longAccumulator("total_datasources");
 
-			final Dataset<SimpleDatasourceInfo> dataset = ClusterUtils
+			final Dataset<Tuple3<String, String, String>> rels = prepareResultTuples(
-				.readPath(spark, graphPath + "/datasource", Datasource.class)
+				spark, graphPath, Publication.class)
-				.map(
+					.union(prepareResultTuples(spark, graphPath, eu.dnetlib.dhp.schema.oaf.Dataset.class))
-					ds -> new SimpleDatasourceInfo(ds.getId(), ds.getDatasourcetype().getClassid()),
+					.union(prepareResultTuples(spark, graphPath, Software.class))
-					Encoders.bean(SimpleDatasourceInfo.class));
+					.union(prepareResultTuples(spark, graphPath, OtherResearchProduct.class));
 
-			ClusterUtils.save(dataset, relsPath, SimpleDatasourceInfo.class, total);
+			final Dataset<OaBrokerRelatedDatasource> datasources = ClusterUtils
+				.readPath(spark, graphPath + "/datasource", Datasource.class)
+				.map(ConversionUtils::oafDatasourceToBrokerDatasource, Encoders.bean(OaBrokerRelatedDatasource.class));
+
+			final Dataset<RelatedDatasource> dataset = rels
+				.joinWith(datasources, datasources.col("openaireId").equalTo(rels.col("_2")), "inner")
+				.map(t -> {
+					final RelatedDatasource r = new RelatedDatasource();
+					r.setSource(t._1._1());
+					r.setRelDatasource(t._2);
+					r.getRelDatasource().setRelType(t._1._3());
+					return r;
+				}, Encoders.bean(RelatedDatasource.class));
+
+			ClusterUtils.save(dataset, relsPath, RelatedDatasource.class, total);
 
 		});
 
 	}
 
+	private static final Dataset<Tuple3<String, String, String>> prepareResultTuples(final SparkSession spark,
+		final String graphPath,
+		final Class<? extends Result> sourceClass) {
+
+		return ClusterUtils
+			.readPath(spark, graphPath + "/" + sourceClass.getSimpleName().toLowerCase(), sourceClass)
+			.filter(r -> !ClusterUtils.isDedupRoot(r.getId()))
+			.filter(r -> r.getDataInfo().getDeletedbyinference())
+			.map(
+				r -> DatasourceRelationsAccumulator.calculateTuples(r),
+				Encoders.bean(DatasourceRelationsAccumulator.class))
+			.flatMap(
+				acc -> acc.getRels().iterator(),
+				Encoders.tuple(Encoders.STRING(), Encoders.STRING(), Encoders.STRING()));
+	}
+
 }

dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/UpdateMatcher.java

@@ -15,6 +15,7 @@ import org.apache.commons.lang3.StringUtils;
 import org.apache.spark.util.LongAccumulator;
 
 import eu.dnetlib.broker.objects.OaBrokerMainEntity;
+import eu.dnetlib.broker.objects.OaBrokerRelatedDatasource;
 import eu.dnetlib.dhp.broker.model.Topic;
 import eu.dnetlib.dhp.broker.oa.util.UpdateInfo;
 
@@ -34,18 +35,19 @@ public abstract class UpdateMatcher<T> {
 		this.highlightToStringFunction = highlightToStringFunction;
 	}
 
-	public Collection<UpdateInfo<T>> searchUpdatesForRecord(final OaBrokerMainEntity res,
+	public Collection<UpdateInfo<T>> searchUpdatesForRecord(final OaBrokerMainEntity target,
+		final OaBrokerRelatedDatasource targetDs,
 		final Collection<OaBrokerMainEntity> others,
 		final Map<String, LongAccumulator> accumulators) {
 
 		final Map<String, UpdateInfo<T>> infoMap = new HashMap<>();
 
 		for (final OaBrokerMainEntity source : others) {
-			if (source != res) {
+			if (source != target) {
-				for (final T hl : findDifferences(source, res)) {
+				for (final T hl : findDifferences(source, target)) {
 					final Topic topic = getTopicFunction().apply(hl);
 					if (topic != null) {
-						final UpdateInfo<T> info = new UpdateInfo<>(topic, hl, source, res,
+						final UpdateInfo<T> info = new UpdateInfo<>(topic, hl, source, target, targetDs,
 							getCompileHighlightFunction(),
 							getHighlightToStringFunction());
 

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

@@ -14,6 +14,10 @@ public class BrokerConstants {
 	public static final String OPEN_ACCESS = "OPEN";
 	public static final String IS_MERGED_IN_CLASS = "isMergedIn";
 
+	public static final String COLLECTED_FROM_REL = "collectedFrom";
+
+	public static final String HOSTED_BY_REL = "hostedBy";
+
 	public static final float MIN_TRUST = 0.25f;
 	public static final float MAX_TRUST = 1.00f;
 

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

@@ -22,11 +22,13 @@ import eu.dnetlib.broker.objects.OaBrokerJournal;
 import eu.dnetlib.broker.objects.OaBrokerMainEntity;
 import eu.dnetlib.broker.objects.OaBrokerProject;
 import eu.dnetlib.broker.objects.OaBrokerRelatedDataset;
+import eu.dnetlib.broker.objects.OaBrokerRelatedDatasource;
 import eu.dnetlib.broker.objects.OaBrokerRelatedPublication;
 import eu.dnetlib.broker.objects.OaBrokerRelatedSoftware;
 import eu.dnetlib.broker.objects.OaBrokerTypedValue;
 import eu.dnetlib.dhp.schema.oaf.Author;
 import eu.dnetlib.dhp.schema.oaf.Dataset;
+import eu.dnetlib.dhp.schema.oaf.Datasource;
 import eu.dnetlib.dhp.schema.oaf.ExternalReference;
 import eu.dnetlib.dhp.schema.oaf.Field;
 import eu.dnetlib.dhp.schema.oaf.Instance;
@@ -119,8 +121,6 @@ public class ConversionUtils {
 		res
 			.setJournal(
 				result instanceof Publication ? oafJournalToBrokerJournal(((Publication) result).getJournal()) : null);
-		res.setCollectedFromId(mappedFirst(result.getCollectedfrom(), KeyValue::getKey));
-		res.setCollectedFromName(mappedFirst(result.getCollectedfrom(), KeyValue::getValue));
 		res.setPids(mappedList(result.getPid(), ConversionUtils::oafPidToBrokerPid));
 		res.setInstances(flatMappedList(result.getInstance(), ConversionUtils::oafInstanceToBrokerInstances));
 		res
@@ -223,6 +223,18 @@ public class ConversionUtils {
 		return res;
 	}
 
+	public static final OaBrokerRelatedDatasource oafDatasourceToBrokerDatasource(final Datasource ds) {
+		if (ds == null) {
+			return null;
+		}
+
+		final OaBrokerRelatedDatasource res = new OaBrokerRelatedDatasource();
+		res.setName(StringUtils.defaultIfBlank(fieldValue(ds.getOfficialname()), fieldValue(ds.getEnglishname())));
+		res.setOpenaireId(ds.getId());
+		res.setType(classId(ds.getDatasourcetype()));
+		return res;
+	}
+
 	private static String first(final List<String> list) {
 		return list != null && list.size() > 0 ? list.get(0) : null;
 	}

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

@@ -0,0 +1,68 @@
+
+package eu.dnetlib.dhp.broker.oa.util;
+
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+import org.apache.commons.lang3.StringUtils;
+
+import eu.dnetlib.dhp.schema.oaf.Result;
+import scala.Tuple3;
+
+public class DatasourceRelationsAccumulator implements Serializable {
+
+	/**
+	 *
+	 */
+	private static final long serialVersionUID = 3256220670651218957L;
+
+	private List<Tuple3<String, String, String>> rels = new ArrayList<>();
+
+	public List<Tuple3<String, String, String>> getRels() {
+		return rels;
+	}
+
+	public void setRels(final List<Tuple3<String, String, String>> rels) {
+		this.rels = rels;
+	}
+
+	protected void addTuple(final Tuple3<String, String, String> t) {
+		rels.add(t);
+	}
+
+	public static final DatasourceRelationsAccumulator calculateTuples(final Result r) {
+
+		final Set<String> collectedFromSet = r
+			.getCollectedfrom()
+			.stream()
+			.map(kv -> kv.getKey())
+			.filter(StringUtils::isNotBlank)
+			.distinct()
+			.collect(Collectors.toSet());
+
+		final Set<String> hostedBySet = r
+			.getInstance()
+			.stream()
+			.map(i -> i.getHostedby())
+			.filter(Objects::nonNull)
+			.filter(kv -> !StringUtils.equalsIgnoreCase(kv.getValue(), "Unknown Repository"))
+			.map(kv -> kv.getKey())
+			.filter(StringUtils::isNotBlank)
+			.distinct()
+			.filter(id -> !collectedFromSet.contains(id))
+			.collect(Collectors.toSet());
+
+		final DatasourceRelationsAccumulator res = new DatasourceRelationsAccumulator();
+		collectedFromSet
+			.stream()
+			.map(s -> new Tuple3<>(r.getId(), s, BrokerConstants.COLLECTED_FROM_REL))
+			.forEach(res::addTuple);
+		hostedBySet.stream().map(s -> new Tuple3<>(r.getId(), s, BrokerConstants.HOSTED_BY_REL)).forEach(res::addTuple);
+		return res;
+	}
+
+}

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

@@ -11,6 +11,7 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import eu.dnetlib.broker.objects.OaBrokerMainEntity;
+import eu.dnetlib.broker.objects.OaBrokerRelatedDatasource;
 import eu.dnetlib.dhp.broker.model.EventFactory;
 import eu.dnetlib.dhp.broker.oa.matchers.UpdateMatcher;
 import eu.dnetlib.dhp.broker.oa.matchers.relatedDatasets.EnrichMissingDatasetIsReferencedBy;
@@ -80,9 +81,11 @@ public class EventFinder {
 		final List<UpdateInfo<?>> list = new ArrayList<>();
 
 		for (final OaBrokerMainEntity target : results.getData()) {
-			if (verifyTarget(target, dsIdWhitelist, dsIdBlacklist, dsTypeWhitelist)) {
+			for (final OaBrokerRelatedDatasource targetDs : target.getDatasources()) {
+				if (verifyTarget(targetDs, dsIdWhitelist, dsIdBlacklist, dsTypeWhitelist)) {
 					for (final UpdateMatcher<?> matcher : matchers) {
-					list.addAll(matcher.searchUpdatesForRecord(target, results.getData(), accumulators));
+						list.addAll(matcher.searchUpdatesForRecord(target, targetDs, results.getData(), accumulators));
+					}
 				}
 			}
 		}
@@ -90,17 +93,17 @@ public class EventFinder {
 		return asEventGroup(list);
 	}
 
-	private static boolean verifyTarget(final OaBrokerMainEntity target,
+	private static boolean verifyTarget(final OaBrokerRelatedDatasource target,
 		final Set<String> dsIdWhitelist,
 		final Set<String> dsIdBlacklist,
 		final Set<String> dsTypeWhitelist) {
 
-		if (dsIdWhitelist.contains(target.getCollectedFromId())) {
+		if (dsIdWhitelist.contains(target.getOpenaireId())) {
 			return true;
-		} else if (dsIdBlacklist.contains(target.getCollectedFromId())) {
+		} else if (dsIdBlacklist.contains(target.getOpenaireId())) {
 			return false;
 		} else {
-			return dsTypeWhitelist.contains(target.getCollectedFromType());
+			return dsTypeWhitelist.contains(target.getType());
 		}
 	}
 

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

@@ -8,6 +8,7 @@ import eu.dnetlib.broker.objects.OaBrokerEventPayload;
 import eu.dnetlib.broker.objects.OaBrokerInstance;
 import eu.dnetlib.broker.objects.OaBrokerMainEntity;
 import eu.dnetlib.broker.objects.OaBrokerProvenance;
+import eu.dnetlib.broker.objects.OaBrokerRelatedDatasource;
 import eu.dnetlib.dhp.broker.model.Topic;
 
 public final class UpdateInfo<T> {
@@ -20,6 +21,8 @@ public final class UpdateInfo<T> {
 
 	private final OaBrokerMainEntity target;
 
+	private final OaBrokerRelatedDatasource targetDs;
+
 	private final BiConsumer<OaBrokerMainEntity, T> compileHighlight;
 
 	private final Function<T, String> highlightToString;
@@ -28,12 +31,14 @@ public final class UpdateInfo<T> {
 
 	public UpdateInfo(final Topic topic, final T highlightValue, final OaBrokerMainEntity source,
 		final OaBrokerMainEntity target,
+		final OaBrokerRelatedDatasource targetDs,
 		final BiConsumer<OaBrokerMainEntity, T> compileHighlight,
 		final Function<T, String> highlightToString) {
 		this.topic = topic;
 		this.highlightValue = highlightValue;
 		this.source = source;
 		this.target = target;
+		this.targetDs = targetDs;
 		this.compileHighlight = compileHighlight;
 		this.highlightToString = highlightToString;
 		this.trust = TrustUtils.calculateTrust(source, target);
@@ -51,6 +56,10 @@ public final class UpdateInfo<T> {
 		return target;
 	}
 
+	public OaBrokerRelatedDatasource getTargetDs() {
+		return targetDs;
+	}
+
 	protected Topic getTopic() {
 		return topic;
 	}
@@ -75,8 +84,20 @@ public final class UpdateInfo<T> {
 		compileHighlight.accept(hl, getHighlightValue());
 
 		final String provId = getSource().getOpenaireId();
-		final String provRepo = getSource().getCollectedFromName();
+		final String provRepo = getSource()
-		final String provType = getSource().getCollectedFromType();
+			.getDatasources()
+			.stream()
+			.filter(ds -> ds.getRelType().equals(BrokerConstants.COLLECTED_FROM_REL))
+			.map(ds -> ds.getName())
+			.findFirst()
+			.orElse("");
+		final String provType = getSource()
+			.getDatasources()
+			.stream()
+			.filter(ds -> ds.getRelType().equals(BrokerConstants.COLLECTED_FROM_REL))
+			.map(ds -> ds.getType())
+			.findFirst()
+			.orElse("");
 
 		final String provUrl = getSource()
 			.getInstances()

dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/util/aggregators/withRels/RelatedDatasource.java

@@ -0,0 +1,42 @@
+
+package eu.dnetlib.dhp.broker.oa.util.aggregators.withRels;
+
+import java.io.Serializable;
+
+import eu.dnetlib.broker.objects.OaBrokerRelatedDatasource;
+
+public class RelatedDatasource implements Serializable {
+
+	/**
+	 *
+	 */
+	private static final long serialVersionUID = 3015550240920424010L;
+
+	private String source;
+	private OaBrokerRelatedDatasource relDatasource;
+
+	public RelatedDatasource() {
+	}
+
+	public RelatedDatasource(final String source, final OaBrokerRelatedDatasource relDatasource) {
+		this.source = source;
+		this.relDatasource = relDatasource;
+	}
+
+	public String getSource() {
+		return source;
+	}
+
+	public void setSource(final String source) {
+		this.source = source;
+	}
+
+	public OaBrokerRelatedDatasource getRelDatasource() {
+		return relDatasource;
+	}
+
+	public void setRelDatasource(final OaBrokerRelatedDatasource relDatasource) {
+		this.relDatasource = relDatasource;
+	}
+
+}

dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/util/aggregators/withRels/RelatedDatasourceAggregator.java

@@ -7,15 +7,16 @@ import org.apache.spark.sql.Encoders;
 import org.apache.spark.sql.expressions.Aggregator;
 
 import eu.dnetlib.broker.objects.OaBrokerMainEntity;
+import eu.dnetlib.dhp.broker.oa.util.BrokerConstants;
 import scala.Tuple2;
 
-public class AddDatasourceTypeAggregator
+public class RelatedDatasourceAggregator
-	extends Aggregator<Tuple2<OaBrokerMainEntity, SimpleDatasourceInfo>, OaBrokerMainEntity, OaBrokerMainEntity> {
+	extends Aggregator<Tuple2<OaBrokerMainEntity, RelatedDatasource>, OaBrokerMainEntity, OaBrokerMainEntity> {
 
 	/**
 	 *
 	 */
-	private static final long serialVersionUID = 8788588975496014728L;
+	private static final long serialVersionUID = -7212121913834713672L;
 
 	@Override
 	public OaBrokerMainEntity zero() {
@@ -29,10 +30,10 @@ public class AddDatasourceTypeAggregator
 
 	@Override
 	public OaBrokerMainEntity reduce(final OaBrokerMainEntity g,
-		final Tuple2<OaBrokerMainEntity, SimpleDatasourceInfo> t) {
+		final Tuple2<OaBrokerMainEntity, RelatedDatasource> t) {
 		final OaBrokerMainEntity res = StringUtils.isNotBlank(g.getOpenaireId()) ? g : t._1;
-		if (t._2 != null && StringUtils.isNotBlank(t._2.getType())) {
+		if (t._2 != null && res.getDatasources().size() < BrokerConstants.MAX_NUMBER_OF_RELS) {
-			res.setCollectedFromType(t._2.getType());
+			res.getDatasources().add(t._2.getRelDatasource());
 		}
 		return res;
 
@@ -40,7 +41,15 @@ public class AddDatasourceTypeAggregator
 
 	@Override
 	public OaBrokerMainEntity merge(final OaBrokerMainEntity g1, final OaBrokerMainEntity g2) {
-		if (StringUtils.isNotBlank(g1.getOpenaireId()) && StringUtils.isNotBlank(g1.getCollectedFromType())) {
+		if (StringUtils.isNotBlank(g1.getOpenaireId())) {
+			final int availables = BrokerConstants.MAX_NUMBER_OF_RELS - g1.getDatasources().size();
+			if (availables > 0) {
+				if (g2.getDatasources().size() <= availables) {
+					g1.getDatasources().addAll(g2.getDatasources());
+				} else {
+					g1.getDatasources().addAll(g2.getDatasources().subList(0, availables));
+				}
+			}
 			return g1;
 		} else {
 			return g2;
@@ -56,4 +65,5 @@ public class AddDatasourceTypeAggregator
 	public Encoder<OaBrokerMainEntity> outputEncoder() {
 		return Encoders.bean(OaBrokerMainEntity.class);
 	}
+
 }

dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/util/aggregators/withRels/SimpleDatasourceInfo.java

@@ -1,40 +0,0 @@
-
-package eu.dnetlib.dhp.broker.oa.util.aggregators.withRels;
-
-import java.io.Serializable;
-
-public class SimpleDatasourceInfo implements Serializable {
-
-	/**
-	 *
-	 */
-	private static final long serialVersionUID = 2996609859416024734L;
-
-	private String id;
-	private String type;
-
-	public SimpleDatasourceInfo() {
-	}
-
-	public SimpleDatasourceInfo(final String id, final String type) {
-		this.id = id;
-		this.type = type;
-	}
-
-	public String getId() {
-		return id;
-	}
-
-	public void setId(final String id) {
-		this.id = id;
-	}
-
-	public String getType() {
-		return type;
-	}
-
-	public void setType(final String type) {
-		this.type = type;
-	}
-
-}

dhp-workflows/dhp-broker-events/src/main/resources/eu/dnetlib/dhp/broker/oa/generate_all/oozie_app/workflow.xml

@@ -448,6 +448,30 @@
             <arg>--index</arg><arg>${esIndexName}</arg>
             <arg>--esHost</arg><arg>${esIndexHost}</arg>
         </spark>
+        <ok to="stats"/>
+        <error to="Kill"/>
+    </action>
+    
+    <action name="stats">
+        <spark xmlns="uri:oozie:spark-action:0.2">
+            <master>yarn</master>
+            <mode>cluster</mode>
+            <name>GenerateStatsJob</name>
+            <class>eu.dnetlib.dhp.broker.oa.GenerateStatsJob</class>
+            <jar>dhp-broker-events-${projectVersion}.jar</jar>
+            <spark-opts>
+                --executor-cores=${sparkExecutorCores}
+                --executor-memory=${sparkExecutorMemory}
+                --driver-memory=${sparkDriverMemory}
+                --conf spark.extraListeners=${spark2ExtraListeners}
+                --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
+                --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
+                --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.shuffle.partitions=3840
+            </spark-opts>
+            <arg>--graphPath</arg><arg>${graphInputPath}</arg>
+            <arg>--workingPath</arg><arg>${workingPath}</arg>
+        </spark>
         <ok to="End"/>
         <error to="Kill"/>
     </action>

dhp-workflows/dhp-broker-events/src/main/resources/eu/dnetlib/dhp/broker/oa/partial/oozie_app/workflow.xml

@@ -64,13 +64,208 @@
         </configuration>
     </global>
 
-    <start to="stats"/>
+    <start to="join_entities_step0"/>
 
     <kill name="Kill">
         <message>Action failed, error message[${wf:errorMessage(wf:lastErrorNode())}]</message>
     </kill>
    
    
+   <action name="join_entities_step0">
+        <spark xmlns="uri:oozie:spark-action:0.2">
+            <master>yarn</master>
+            <mode>cluster</mode>
+            <name>JoinStep0</name>
+            <class>eu.dnetlib.dhp.broker.oa.JoinStep0Job</class>
+            <jar>dhp-broker-events-${projectVersion}.jar</jar>
+            <spark-opts>
+                --executor-cores=${sparkExecutorCores}
+                --executor-memory=${sparkExecutorMemory}
+                --driver-memory=${sparkDriverMemory}
+                --conf spark.extraListeners=${spark2ExtraListeners}
+                --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
+                --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
+                --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.shuffle.partitions=3840
+            </spark-opts>
+            <arg>--graphPath</arg><arg>${graphInputPath}</arg>
+            <arg>--workingPath</arg><arg>${workingPath}</arg>
+        </spark>
+        <ok to="join_entities_step1"/>
+        <error to="Kill"/>
+    </action>
+    
+ <action name="join_entities_step1">
+        <spark xmlns="uri:oozie:spark-action:0.2">
+            <master>yarn</master>
+            <mode>cluster</mode>
+            <name>JoinStep1</name>
+            <class>eu.dnetlib.dhp.broker.oa.JoinStep1Job</class>
+            <jar>dhp-broker-events-${projectVersion}.jar</jar>
+            <spark-opts>
+                --executor-cores=${sparkExecutorCores}
+                --executor-memory=${sparkExecutorMemory}
+                --driver-memory=${sparkDriverMemory}
+                --conf spark.extraListeners=${spark2ExtraListeners}
+                --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
+                --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
+                --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.shuffle.partitions=3840
+            </spark-opts>
+            <arg>--graphPath</arg><arg>${graphInputPath}</arg>
+            <arg>--workingPath</arg><arg>${workingPath}</arg>
+        </spark>
+        <ok to="join_entities_step2"/>
+        <error to="Kill"/>
+    </action>
+    
+    <action name="join_entities_step2">
+        <spark xmlns="uri:oozie:spark-action:0.2">
+            <master>yarn</master>
+            <mode>cluster</mode>
+            <name>JoinStep2</name>
+            <class>eu.dnetlib.dhp.broker.oa.JoinStep2Job</class>
+            <jar>dhp-broker-events-${projectVersion}.jar</jar>
+            <spark-opts>
+                --executor-cores=${sparkExecutorCores}
+                --executor-memory=${sparkExecutorMemory}
+                --driver-memory=${sparkDriverMemory}
+                --conf spark.extraListeners=${spark2ExtraListeners}
+                --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
+                --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
+                --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.shuffle.partitions=3840
+            </spark-opts>
+            <arg>--graphPath</arg><arg>${graphInputPath}</arg>
+            <arg>--workingPath</arg><arg>${workingPath}</arg>
+        </spark>
+        <ok to="join_entities_step3"/>
+        <error to="Kill"/>
+    </action>
+    
+    <action name="join_entities_step3">
+        <spark xmlns="uri:oozie:spark-action:0.2">
+            <master>yarn</master>
+            <mode>cluster</mode>
+            <name>JoinStep3</name>
+            <class>eu.dnetlib.dhp.broker.oa.JoinStep3Job</class>
+            <jar>dhp-broker-events-${projectVersion}.jar</jar>
+            <spark-opts>
+                --executor-cores=${sparkExecutorCores}
+                --executor-memory=${sparkExecutorMemory}
+                --driver-memory=${sparkDriverMemory}
+                --conf spark.extraListeners=${spark2ExtraListeners}
+                --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
+                --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
+                --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.shuffle.partitions=3840
+            </spark-opts>
+            <arg>--graphPath</arg><arg>${graphInputPath}</arg>
+            <arg>--workingPath</arg><arg>${workingPath}</arg>
+        </spark>
+        <ok to="join_entities_step4"/>
+        <error to="Kill"/>
+    </action>
+    
+    <action name="join_entities_step4">
+        <spark xmlns="uri:oozie:spark-action:0.2">
+            <master>yarn</master>
+            <mode>cluster</mode>
+            <name>JoinStep4</name>
+            <class>eu.dnetlib.dhp.broker.oa.JoinStep4Job</class>
+            <jar>dhp-broker-events-${projectVersion}.jar</jar>
+            <spark-opts>
+                --executor-cores=${sparkExecutorCores}
+                --executor-memory=${sparkExecutorMemory}
+                --driver-memory=${sparkDriverMemory}
+                --conf spark.extraListeners=${spark2ExtraListeners}
+                --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
+                --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
+                --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.shuffle.partitions=3840
+            </spark-opts>
+            <arg>--graphPath</arg><arg>${graphInputPath}</arg>
+            <arg>--workingPath</arg><arg>${workingPath}</arg>
+        </spark>
+        <ok to="prepare_groups"/>
+        <error to="Kill"/>
+    </action>
+
+    <action name="prepare_groups">
+        <spark xmlns="uri:oozie:spark-action:0.2">
+            <master>yarn</master>
+            <mode>cluster</mode>
+            <name>PrepareGroupsJob</name>
+            <class>eu.dnetlib.dhp.broker.oa.PrepareGroupsJob</class>
+            <jar>dhp-broker-events-${projectVersion}.jar</jar>
+            <spark-opts>
+                --executor-cores=${sparkExecutorCores}
+                --executor-memory=${sparkExecutorMemory}
+                --driver-memory=${sparkDriverMemory}
+                --conf spark.extraListeners=${spark2ExtraListeners}
+                --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
+                --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
+                --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.shuffle.partitions=3840
+            </spark-opts>
+            <arg>--graphPath</arg><arg>${graphInputPath}</arg>
+            <arg>--workingPath</arg><arg>${workingPath}</arg>
+        </spark>
+        <ok to="generate_events"/>
+        <error to="Kill"/>
+    </action>
+
+    <action name="generate_events">
+        <spark xmlns="uri:oozie:spark-action:0.2">
+            <master>yarn</master>
+            <mode>cluster</mode>
+            <name>GenerateEventsJob</name>
+            <class>eu.dnetlib.dhp.broker.oa.GenerateEventsJob</class>
+            <jar>dhp-broker-events-${projectVersion}.jar</jar>
+            <spark-opts>
+                --executor-cores=${sparkExecutorCores}
+                --executor-memory=${sparkExecutorMemory}
+                --driver-memory=${sparkDriverMemory}
+                --conf spark.extraListeners=${spark2ExtraListeners}
+                --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
+                --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
+                --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.shuffle.partitions=3840
+            </spark-opts>
+            <arg>--workingPath</arg><arg>${workingPath}</arg>
+			<arg>--datasourceIdWhitelist</arg><arg>${datasourceIdWhitelist}</arg>
+			<arg>--datasourceTypeWhitelist</arg><arg>${datasourceTypeWhitelist}</arg>
+			<arg>--datasourceIdBlacklist</arg><arg>${datasourceIdBlacklist}</arg>
+        </spark>
+        <ok to="index_es"/>
+        <error to="Kill"/>
+    </action>
+    
+     <action name="index_es">
+        <spark xmlns="uri:oozie:spark-action:0.2">
+            <master>yarn</master>
+            <mode>cluster</mode>
+            <name>IndexOnESJob</name>
+            <class>eu.dnetlib.dhp.broker.oa.IndexOnESJob</class>
+            <jar>dhp-broker-events-${projectVersion}.jar</jar>
+            <spark-opts>
+                --executor-memory=${sparkExecutorMemory}
+                --driver-memory=${sparkDriverMemory}
+                --conf spark.dynamicAllocation.maxExecutors="8" 
+                --conf spark.extraListeners=${spark2ExtraListeners}
+                --conf spark.sql.queryExecutionListeners=${spark2SqlQueryExecutionListeners}
+                --conf spark.yarn.historyServer.address=${spark2YarnHistoryServerAddress}
+                --conf spark.eventLog.dir=${nameNode}${spark2EventLogDir}
+                --conf spark.sql.shuffle.partitions=3840
+            </spark-opts>
+            <arg>--workingPath</arg><arg>${workingPath}</arg>
+            <arg>--index</arg><arg>${esIndexName}</arg>
+            <arg>--esHost</arg><arg>${esIndexHost}</arg>
+        </spark>
+        <ok to="stats"/>
+        <error to="Kill"/>
+       </action>
+    	
     	<action name="stats">
         <spark xmlns="uri:oozie:spark-action:0.2">
             <master>yarn</master>

dhp-workflows/dhp-broker-events/src/test/java/eu/dnetlib/dhp/broker/oa/matchers/UpdateMatcherTest.java

@@ -8,15 +8,23 @@ import java.util.Collection;
 
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
 
 import eu.dnetlib.broker.objects.OaBrokerMainEntity;
+import eu.dnetlib.broker.objects.OaBrokerRelatedDatasource;
 import eu.dnetlib.dhp.broker.oa.matchers.simple.EnrichMissingPublicationDate;
 import eu.dnetlib.dhp.broker.oa.util.UpdateInfo;
 
+@ExtendWith(MockitoExtension.class)
 class UpdateMatcherTest {
 
 	UpdateMatcher<String> matcher = new EnrichMissingPublicationDate();
 
+	@Mock
+	private OaBrokerRelatedDatasource targetDs;
+
 	@BeforeEach
 	void setUp() throws Exception {
 	}
@@ -30,7 +38,7 @@ class UpdateMatcherTest {
 		final OaBrokerMainEntity p4 = new OaBrokerMainEntity();
 
 		final Collection<UpdateInfo<String>> list = matcher
-			.searchUpdatesForRecord(res, Arrays.asList(p1, p2, p3, p4), null);
+			.searchUpdatesForRecord(res, targetDs, Arrays.asList(p1, p2, p3, p4), null);
 
 		assertTrue(list.isEmpty());
 	}
@@ -46,7 +54,7 @@ class UpdateMatcherTest {
 		res.setPublicationdate("2018");
 
 		final Collection<UpdateInfo<String>> list = matcher
-			.searchUpdatesForRecord(res, Arrays.asList(p1, p2, p3, p4), null);
+			.searchUpdatesForRecord(res, targetDs, Arrays.asList(p1, p2, p3, p4), null);
 
 		assertTrue(list.isEmpty());
 	}
@@ -62,7 +70,7 @@ class UpdateMatcherTest {
 		p2.setPublicationdate("2018");
 
 		final Collection<UpdateInfo<String>> list = matcher
-			.searchUpdatesForRecord(res, Arrays.asList(p1, p2, p3, p4), null);
+			.searchUpdatesForRecord(res, targetDs, Arrays.asList(p1, p2, p3, p4), null);
 
 		assertTrue(list.size() == 1);
 	}
@@ -79,7 +87,7 @@ class UpdateMatcherTest {
 		p2.setPublicationdate("2018");
 
 		final Collection<UpdateInfo<String>> list = matcher
-			.searchUpdatesForRecord(res, Arrays.asList(p1, p2, p3, p4), null);
+			.searchUpdatesForRecord(res, targetDs, Arrays.asList(p1, p2, p3, p4), null);
 
 		assertTrue(list.isEmpty());
 	}
@@ -98,7 +106,7 @@ class UpdateMatcherTest {
 		p4.setPublicationdate("2018");
 
 		final Collection<UpdateInfo<String>> list = matcher
-			.searchUpdatesForRecord(res, Arrays.asList(p1, p2, p3, p4), null);
+			.searchUpdatesForRecord(res, targetDs, Arrays.asList(p1, p2, p3, p4), null);
 
 		assertTrue(list.isEmpty());
 	}
@@ -117,7 +125,7 @@ class UpdateMatcherTest {
 		p4.setPublicationdate("2018");
 
 		final Collection<UpdateInfo<String>> list = matcher
-			.searchUpdatesForRecord(res, Arrays.asList(p1, p2, p3, p4), null);
+			.searchUpdatesForRecord(res, targetDs, Arrays.asList(p1, p2, p3, p4), null);
 
 		assertTrue(list.size() == 1);
 	}

pom.xml

@@ -624,6 +624,6 @@
 		<mockito-core.version>3.3.3</mockito-core.version>
 		<mongodb.driver.version>3.4.2</mongodb.driver.version>
 		<vtd.version>[2.12,3.0)</vtd.version>
-		<dnet.openaire.broker.common>3.0.0</dnet.openaire.broker.common>
+		<dnet.openaire.broker.common>3.1.0</dnet.openaire.broker.common>
 	</properties>
 </project>