Merge branch 'master' of https://code-repo.d4science.org/D-Net/dnet-hadoop

dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/migration/ExtractEntitiesFromHDFSJob.java

@@ -1,68 +0,0 @@
-package eu.dnetlib.dhp.migration;
-
-import java.util.Arrays;
-import java.util.List;
-
-import org.apache.commons.io.IOUtils;
-import org.apache.commons.lang3.StringUtils;
-import org.apache.hadoop.io.Text;
-import org.apache.spark.api.java.JavaRDD;
-import org.apache.spark.api.java.JavaSparkContext;
-import org.apache.spark.sql.SparkSession;
-
-import eu.dnetlib.dhp.application.ArgumentApplicationParser;
-import eu.dnetlib.dhp.schema.oaf.Dataset;
-import eu.dnetlib.dhp.schema.oaf.Datasource;
-import eu.dnetlib.dhp.schema.oaf.Organization;
-import eu.dnetlib.dhp.schema.oaf.OtherResearchProduct;
-import eu.dnetlib.dhp.schema.oaf.Project;
-import eu.dnetlib.dhp.schema.oaf.Publication;
-import eu.dnetlib.dhp.schema.oaf.Relation;
-import eu.dnetlib.dhp.schema.oaf.Software;
-import scala.Tuple2;
-
-public class ExtractEntitiesFromHDFSJob {
-
-	public static void main(final String[] args) throws Exception {
-		final ArgumentApplicationParser parser = new ArgumentApplicationParser(
-				IOUtils.toString(MigrateMongoMdstoresApplication.class
-						.getResourceAsStream("/eu/dnetlib/dhp/migration/extract_entities_from_hdfs_parameters.json")));
-		parser.parseArgument(args);
-
-		final SparkSession spark = SparkSession
-				.builder()
-				.appName(ExtractEntitiesFromHDFSJob.class.getSimpleName())
-				.master(parser.get("master"))
-				.getOrCreate();
-
-		final List<String> sourcePaths = Arrays.asList(parser.get("sourcePaths").split(","));
-		final String targetPath = parser.get("graphRawPath");
-
-		try (final JavaSparkContext sc = new JavaSparkContext(spark.sparkContext())) {
-			processEntity(sc, Publication.class, sourcePaths, targetPath);
-			processEntity(sc, Dataset.class, sourcePaths, targetPath);
-			processEntity(sc, Software.class, sourcePaths, targetPath);
-			processEntity(sc, OtherResearchProduct.class, sourcePaths, targetPath);
-			processEntity(sc, Datasource.class, sourcePaths, targetPath);
-			processEntity(sc, Organization.class, sourcePaths, targetPath);
-			processEntity(sc, Project.class, sourcePaths, targetPath);
-			processEntity(sc, Relation.class, sourcePaths, targetPath);
-		}
-	}
-
-	private static void processEntity(final JavaSparkContext sc, final Class<?> clazz, final List<String> sourcePaths, final String targetPath) {
-		final String type = clazz.getSimpleName().toLowerCase();
-
-		final JavaRDD<String> inputRdd = sc.emptyRDD();
-		sourcePaths.forEach(sourcePath -> inputRdd.union(sc.sequenceFile(sourcePath, Text.class, Text.class)
-				.map(k -> new Tuple2<>(k._1().toString(), k._2().toString()))
-				.filter(k -> isEntityType(k._1(), type))
-				.map(Tuple2::_2)));
-
-		inputRdd.saveAsTextFile(targetPath + "/" + type);
-	}
-
-	private static boolean isEntityType(final String item, final String entity) {
-		return StringUtils.substringAfter(item, ":").equalsIgnoreCase(entity);
-	}
-}

dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/migration/MigrateMongoMdstoresApplication.java

@@ -1,45 +0,0 @@
-package eu.dnetlib.dhp.migration;
-
-import org.apache.commons.io.IOUtils;
-
-import eu.dnetlib.dhp.application.ArgumentApplicationParser;
-
-public class MigrateMongoMdstoresApplication {
-
-	public static void main(final String[] args) throws Exception {
-		final ArgumentApplicationParser parser = new ArgumentApplicationParser(
-				IOUtils.toString(MigrateMongoMdstoresApplication.class.getResourceAsStream("/eu/dnetlib/dhp/migration/migrate_mongo_mstores_parameters.json")));
-		parser.parseArgument(args);
-
-		final String mongoBaseUrl = parser.get("mongoBaseUrl");
-		final String mongoDb = parser.get("mongoDb");
-
-		final String mdFormat = parser.get("mdFormat");
-		final String mdLayout = parser.get("mdLayout");
-		final String mdInterpretation = parser.get("mdInterpretation");
-
-		final String hdfsPath = parser.get("hdfsPath");
-		final String hdfsNameNode = parser.get("namenode");
-		final String hdfsUser = parser.get("hdfsUser");
-
-		final String dbUrl = parser.get("postgresUrl");
-		final String dbUser = parser.get("postgresUser");
-		final String dbPassword = parser.get("postgresPassword");
-
-		if (mdFormat.equalsIgnoreCase("oaf")) {
-			try (final OafMigrationExecutor mig =
-					new OafMigrationExecutor(hdfsPath, hdfsNameNode, hdfsUser, mongoBaseUrl, mongoDb, dbUrl, dbUser, dbPassword)) {
-				mig.processMdRecords(mdFormat, mdLayout, mdInterpretation);
-			}
-		} else if (mdFormat.equalsIgnoreCase("odf")) {
-			try (final OdfMigrationExecutor mig =
-					new OdfMigrationExecutor(hdfsPath, hdfsNameNode, hdfsUser, mongoBaseUrl, mongoDb, dbUrl, dbUser, dbPassword)) {
-				mig.processMdRecords(mdFormat, mdLayout, mdInterpretation);
-			}
-		} else {
-			throw new RuntimeException("Format not supported: " + mdFormat);
-		}
-
-	}
-
-}

dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/migration/step1/MigrateDbEntitiesApplication.java

@@ -1,4 +1,14 @@
-package eu.dnetlib.dhp.migration;
+package eu.dnetlib.dhp.migration.step1;
+
+import static eu.dnetlib.dhp.migration.utils.OafMapperUtils.asString;
+import static eu.dnetlib.dhp.migration.utils.OafMapperUtils.createOpenaireId;
+import static eu.dnetlib.dhp.migration.utils.OafMapperUtils.dataInfo;
+import static eu.dnetlib.dhp.migration.utils.OafMapperUtils.field;
+import static eu.dnetlib.dhp.migration.utils.OafMapperUtils.journal;
+import static eu.dnetlib.dhp.migration.utils.OafMapperUtils.listFields;
+import static eu.dnetlib.dhp.migration.utils.OafMapperUtils.listKeyValues;
+import static eu.dnetlib.dhp.migration.utils.OafMapperUtils.qualifier;
+import static eu.dnetlib.dhp.migration.utils.OafMapperUtils.structuredProperty;
 
 import java.io.Closeable;
 import java.io.IOException;
@@ -17,6 +27,8 @@ import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 
 import eu.dnetlib.dhp.application.ArgumentApplicationParser;
+import eu.dnetlib.dhp.migration.utils.AbstractMigrationApplication;
+import eu.dnetlib.dhp.migration.utils.DbClient;
 import eu.dnetlib.dhp.schema.oaf.Context;
 import eu.dnetlib.dhp.schema.oaf.DataInfo;
 import eu.dnetlib.dhp.schema.oaf.Dataset;
@@ -34,7 +46,7 @@ import eu.dnetlib.dhp.schema.oaf.Result;
 import eu.dnetlib.dhp.schema.oaf.Software;
 import eu.dnetlib.dhp.schema.oaf.StructuredProperty;
 
-public class MigrateDbEntitiesApplication extends AbstractMigrationExecutor implements Closeable {
+public class MigrateDbEntitiesApplication extends AbstractMigrationApplication implements Closeable {
 
 	private static final Qualifier ENTITYREGISTRY_PROVENANCE_ACTION =
 			qualifier("sysimport:crosswalk:entityregistry", "sysimport:crosswalk:entityregistry", "dnet:provenance_actions", "dnet:provenance_actions");

dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/migration/step1/MigrateMongoMdstoresApplication.java

@@ -0,0 +1,70 @@
+package eu.dnetlib.dhp.migration.step1;
+
+import java.io.Closeable;
+import java.io.IOException;
+import java.util.Map;
+import java.util.Map.Entry;
+
+import org.apache.commons.io.IOUtils;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+import eu.dnetlib.dhp.application.ArgumentApplicationParser;
+import eu.dnetlib.dhp.migration.utils.AbstractMigrationApplication;
+import eu.dnetlib.dhp.migration.utils.MdstoreClient;
+
+public class MigrateMongoMdstoresApplication extends AbstractMigrationApplication implements Closeable {
+
+	private static final Log log = LogFactory.getLog(MigrateMongoMdstoresApplication.class);
+
+	private final MdstoreClient mdstoreClient;
+
+	public static void main(final String[] args) throws Exception {
+		final ArgumentApplicationParser parser = new ArgumentApplicationParser(
+				IOUtils.toString(MigrateMongoMdstoresApplication.class.getResourceAsStream("/eu/dnetlib/dhp/migration/migrate_mongo_mstores_parameters.json")));
+		parser.parseArgument(args);
+
+		final String mongoBaseUrl = parser.get("mongoBaseUrl");
+		final String mongoDb = parser.get("mongoDb");
+
+		final String mdFormat = parser.get("mdFormat");
+		final String mdLayout = parser.get("mdLayout");
+		final String mdInterpretation = parser.get("mdInterpretation");
+
+		final String hdfsPath = parser.get("hdfsPath");
+		final String hdfsNameNode = parser.get("namenode");
+		final String hdfsUser = parser.get("hdfsUser");
+
+		try (MigrateMongoMdstoresApplication app = new MigrateMongoMdstoresApplication(hdfsPath, hdfsNameNode, hdfsUser, mongoBaseUrl, mongoDb)) {
+			app.execute(mdFormat, mdLayout, mdInterpretation);
+		}
+
+	}
+
+	public MigrateMongoMdstoresApplication(final String hdfsPath, final String hdfsNameNode, final String hdfsUser, final String mongoBaseUrl,
+			final String mongoDb) throws Exception {
+		super(hdfsPath, hdfsNameNode, hdfsUser);
+		this.mdstoreClient = new MdstoreClient(mongoBaseUrl, mongoDb);
+	}
+
+	public void execute(final String format, final String layout, final String interpretation) {
+		final Map<String, String> colls = mdstoreClient.validCollections(format, layout, interpretation);
+		log.info("Found " + colls.size() + " mdstores");
+
+		for (final Entry<String, String> entry : colls.entrySet()) {
+			log.info("Processing mdstore " + entry.getKey() + " (collection: " + entry.getValue() + ")");
+			final String currentColl = entry.getValue();
+
+			for (final String xml : mdstoreClient.listRecords(currentColl)) {
+				emit(xml, "native_" + format);
+			}
+		}
+	}
+
+	@Override
+	public void close() throws IOException {
+		super.close();
+		mdstoreClient.close();
+	}
+
+}

dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/migration/step2/AbstractMdRecordToOafMapper.java

@@ -1,20 +1,24 @@
-package eu.dnetlib.dhp.migration;
+package eu.dnetlib.dhp.migration.step2;
+
+import static eu.dnetlib.dhp.migration.utils.OafMapperUtils.createOpenaireId;
+import static eu.dnetlib.dhp.migration.utils.OafMapperUtils.dataInfo;
+import static eu.dnetlib.dhp.migration.utils.OafMapperUtils.field;
+import static eu.dnetlib.dhp.migration.utils.OafMapperUtils.journal;
+import static eu.dnetlib.dhp.migration.utils.OafMapperUtils.keyValue;
+import static eu.dnetlib.dhp.migration.utils.OafMapperUtils.listFields;
+import static eu.dnetlib.dhp.migration.utils.OafMapperUtils.oaiIProvenance;
+import static eu.dnetlib.dhp.migration.utils.OafMapperUtils.qualifier;
+import static eu.dnetlib.dhp.migration.utils.OafMapperUtils.structuredProperty;
 
-import java.io.IOException;
-import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Date;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
-import java.util.Map.Entry;
 
 import org.apache.commons.lang3.StringUtils;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.dom4j.Document;
-import org.dom4j.DocumentException;
 import org.dom4j.DocumentFactory;
 import org.dom4j.DocumentHelper;
 import org.dom4j.Node;
@@ -37,11 +41,9 @@ import eu.dnetlib.dhp.schema.oaf.Result;
 import eu.dnetlib.dhp.schema.oaf.Software;
 import eu.dnetlib.dhp.schema.oaf.StructuredProperty;
 
-public abstract class AbstractMongoExecutor extends AbstractMigrationExecutor {
+public abstract class AbstractMdRecordToOafMapper {
 
-	protected final Map<String, String> code2name = new HashMap<>();
+	protected final Map<String, String> code2name;
-
-	protected final MdstoreClient mdstoreClient;
 
 	protected static final Qualifier MAIN_TITLE_QUALIFIER = qualifier("main title", "main title", "dnet:dataCite_title", "dnet:dataCite_title");
 
@@ -51,79 +53,36 @@ public abstract class AbstractMongoExecutor extends AbstractMigrationExecutor {
 	protected static final Qualifier SOFTWARE_RESULTTYPE_QUALIFIER = qualifier("software", "software", "dnet:result_typologies", "dnet:result_typologies");
 	protected static final Qualifier OTHER_RESULTTYPE_QUALIFIER = qualifier("other", "other", "dnet:result_typologies", "dnet:result_typologies");
 
-	private static final Log log = LogFactory.getLog(AbstractMongoExecutor.class);
+	protected AbstractMdRecordToOafMapper(final Map<String, String> code2name) {
-
+		this.code2name = code2name;
-	public AbstractMongoExecutor(final String hdfsPath, final String hdfsNameNode, final String hdfsUser, final String mongoBaseUrl,
-			final String mongoDb, final String dbUrl, final String dbUser,
-			final String dbPassword) throws Exception {
-
-		super(hdfsPath, hdfsNameNode, hdfsUser);
-
-		this.mdstoreClient = new MdstoreClient(mongoBaseUrl, mongoDb);
-		loadClassNames(dbUrl, dbUser, dbPassword);
-
-		final Map<String, String> nsContext = new HashMap<>();
-
-		registerNamespaces(nsContext);
-
-		DocumentFactory.getInstance().setXPathNamespaceURIs(nsContext);
 	}
 
-	private void loadClassNames(final String dbUrl, final String dbUser, final String dbPassword) throws IOException {
+	public List<Oaf> processMdRecord(final String xml) {
+		try {
+			final Map<String, String> nsContext = new HashMap<>();
+			nsContext.put("dr", "http://www.driver-repository.eu/namespace/dr");
+			nsContext.put("dri", "http://www.driver-repository.eu/namespace/dri");
+			nsContext.put("oaf", "http://namespace.openaire.eu/oaf");
+			nsContext.put("oai", "http://www.openarchives.org/OAI/2.0/");
+			nsContext.put("prov", "http://www.openarchives.org/OAI/2.0/provenance");
+			nsContext.put("dc", "http://purl.org/dc/elements/1.1/");
+			nsContext.put("datacite", "http://datacite.org/schema/kernel-3");
+			DocumentFactory.getInstance().setXPathNamespaceURIs(nsContext);
 
-		log.info("Loading vocabulary terms from db...");
+			final Document doc = DocumentHelper.parseText(xml);
 
-		try (DbClient dbClient = new DbClient(dbUrl, dbUser, dbPassword)) {
+			final String type = doc.valueOf("//dr:CobjCategory/@type");
-			code2name.clear();
+			final KeyValue collectedFrom = keyValue(doc.valueOf("//oaf:collectedFrom/@id"), doc.valueOf("//oaf:collectedFrom/@name"));
-			dbClient.processResults("select code, name from class", rs -> {
+			final KeyValue hostedBy = StringUtils.isBlank(doc.valueOf("//oaf:hostedBy/@id")) ? collectedFrom
-				try {
+					: keyValue(doc.valueOf("//oaf:hostedBy/@id"), doc.valueOf("//oaf:hostedBy/@name"));
-					code2name.put(rs.getString("code"), rs.getString("name"));
+
-				} catch (final SQLException e) {
+			final DataInfo info = prepareDataInfo(doc);
-					e.printStackTrace();
+			final long lastUpdateTimestamp = new Date().getTime();
-				}
+
-			});
+			return createOafs(doc, type, collectedFrom, hostedBy, info, lastUpdateTimestamp);
+		} catch (final Exception e) {
+			throw new RuntimeException(e);
 		}
-
-		log.info("Found " + code2name.size() + " terms.");
-
-	}
-
-	public void processMdRecords(final String mdFormat, final String mdLayout, final String mdInterpretation) throws DocumentException {
-
-		log.info(String.format("Searching mdstores (format: %s, layout: %s, interpretation: %s)", mdFormat, mdLayout, mdInterpretation));
-
-		final Map<String, String> colls = mdstoreClient.validCollections(mdFormat, mdLayout, mdInterpretation);
-		log.info("Found " + colls.size() + " mdstores");
-
-		for (final Entry<String, String> entry : colls.entrySet()) {
-			log.info("Processing mdstore " + entry.getKey() + " (collection: " + entry.getValue() + ")");
-			final String currentColl = entry.getValue();
-
-			for (final String xml : mdstoreClient.listRecords(currentColl)) {
-				final Document doc = DocumentHelper.parseText(xml);
-
-				final String type = doc.valueOf("//dr:CobjCategory/@type");
-				final KeyValue collectedFrom = keyValue(doc.valueOf("//oaf:collectedFrom/@id"), doc.valueOf("//oaf:collectedFrom/@name"));
-				final KeyValue hostedBy = StringUtils.isBlank(doc.valueOf("//oaf:hostedBy/@id")) ? collectedFrom
-						: keyValue(doc.valueOf("//oaf:hostedBy/@id"), doc.valueOf("//oaf:hostedBy/@name"));
-
-				final DataInfo info = prepareDataInfo(doc);
-				final long lastUpdateTimestamp = new Date().getTime();
-
-				for (final Oaf oaf : createOafs(doc, type, collectedFrom, hostedBy, info, lastUpdateTimestamp)) {
-					emitOaf(oaf);
-				}
-			}
-		}
-		log.info("All Done.");
-	}
-
-	protected void registerNamespaces(final Map<String, String> nsContext) {
-		nsContext.put("dr", "http://www.driver-repository.eu/namespace/dr");
-		nsContext.put("dri", "http://www.driver-repository.eu/namespace/dri");
-		nsContext.put("oaf", "http://namespace.openaire.eu/oaf");
-		nsContext.put("oai", "http://www.openarchives.org/OAI/2.0/");
-		nsContext.put("prov", "http://www.openarchives.org/OAI/2.0/provenance");
 	}
 
 	protected List<Oaf> createOafs(final Document doc,
@@ -432,10 +391,4 @@ public abstract class AbstractMongoExecutor extends AbstractMigrationExecutor {
 		return res;
 	}
 
-	@Override
-	public void close() throws IOException {
-		super.close();
-		mdstoreClient.close();
-	}
-
 }

dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/migration/step2/GenerateEntitiesApplication.java

@@ -0,0 +1,170 @@
+package eu.dnetlib.dhp.migration.step2;
+
+import java.io.IOException;
+import java.sql.SQLException;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+import org.apache.commons.io.IOUtils;
+import org.apache.commons.lang3.StringUtils;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.io.Text;
+import org.apache.spark.api.java.JavaRDD;
+import org.apache.spark.api.java.JavaSparkContext;
+import org.apache.spark.sql.SparkSession;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import eu.dnetlib.dhp.application.ArgumentApplicationParser;
+import eu.dnetlib.dhp.migration.step1.MigrateMongoMdstoresApplication;
+import eu.dnetlib.dhp.migration.utils.DbClient;
+import eu.dnetlib.dhp.schema.oaf.Dataset;
+import eu.dnetlib.dhp.schema.oaf.Datasource;
+import eu.dnetlib.dhp.schema.oaf.Oaf;
+import eu.dnetlib.dhp.schema.oaf.Organization;
+import eu.dnetlib.dhp.schema.oaf.OtherResearchProduct;
+import eu.dnetlib.dhp.schema.oaf.Project;
+import eu.dnetlib.dhp.schema.oaf.Publication;
+import eu.dnetlib.dhp.schema.oaf.Relation;
+import eu.dnetlib.dhp.schema.oaf.Software;
+import scala.Tuple2;
+
+public class GenerateEntitiesApplication {
+
+	private static final Log log = LogFactory.getLog(GenerateEntitiesApplication.class);
+
+	public static void main(final String[] args) throws Exception {
+		final ArgumentApplicationParser parser = new ArgumentApplicationParser(
+				IOUtils.toString(MigrateMongoMdstoresApplication.class
+						.getResourceAsStream("/eu/dnetlib/dhp/migration/generate_entities_parameters.json")));
+
+		parser.parseArgument(args);
+
+		final String sourcePaths = parser.get("sourcePaths");
+		final String targetPath = parser.get("targetPath");
+
+		final String dbUrl = parser.get("postgresUrl");
+		final String dbUser = parser.get("postgresUser");
+		final String dbPassword = parser.get("postgresPassword");
+
+		final SparkSession spark = SparkSession
+				.builder()
+				.appName(GenerateEntitiesApplication.class.getSimpleName())
+				.master(parser.get("master"))
+				.getOrCreate();
+
+		final Map<String, String> code2name = loadClassNames(dbUrl, dbUser, dbPassword);
+
+		try (final JavaSparkContext sc = new JavaSparkContext(spark.sparkContext())) {
+			final List<String> existingSourcePaths = Arrays.stream(sourcePaths.split(",")).filter(p -> exists(sc, p)).collect(Collectors.toList());
+			generateEntities(sc, code2name, existingSourcePaths, targetPath);
+		}
+	}
+
+	private static void generateEntities(final JavaSparkContext sc,
+			final Map<String, String> code2name,
+			final List<String> sourcePaths,
+			final String targetPath) {
+
+		log.info("Generate entities from files:");
+		sourcePaths.forEach(log::info);
+
+		JavaRDD<String> inputRdd = sc.emptyRDD();
+
+		for (final String sp : sourcePaths) {
+			inputRdd = inputRdd.union(sc.sequenceFile(sp, Text.class, Text.class)
+					.map(k -> new Tuple2<>(k._1().toString(), k._2().toString()))
+					.map(k -> convertToListOaf(k._1(), k._2(), code2name))
+					.flatMap(list -> list.iterator())
+					.map(oaf -> oaf.getClass().getSimpleName().toLowerCase() + "|" + convertToJson(oaf)));
+		}
+
+		inputRdd.saveAsTextFile(targetPath);
+
+	}
+
+	private static List<Oaf> convertToListOaf(final String id, final String s, final Map<String, String> code2name) {
+		final String type = StringUtils.substringAfter(id, ":");
+
+		switch (type.toLowerCase()) {
+		case "native_oaf":
+			return new OafToOafMapper(code2name).processMdRecord(s);
+		case "native_odf":
+			return new OafToOafMapper(code2name).processMdRecord(s);
+		case "datasource":
+			return Arrays.asList(convertFromJson(s, Datasource.class));
+		case "organization":
+			return Arrays.asList(convertFromJson(s, Organization.class));
+		case "project":
+			return Arrays.asList(convertFromJson(s, Project.class));
+		case "relation":
+			return Arrays.asList(convertFromJson(s, Relation.class));
+		case "publication":
+			return Arrays.asList(convertFromJson(s, Publication.class));
+		case "dataset":
+			return Arrays.asList(convertFromJson(s, Dataset.class));
+		case "software":
+			return Arrays.asList(convertFromJson(s, Software.class));
+		case "otherresearchproducts":
+		default:
+			return Arrays.asList(convertFromJson(s, OtherResearchProduct.class));
+		}
+
+	}
+
+	private static Map<String, String> loadClassNames(final String dbUrl, final String dbUser, final String dbPassword) throws IOException {
+
+		log.info("Loading vocabulary terms from db...");
+
+		final Map<String, String> map = new HashMap<>();
+
+		try (DbClient dbClient = new DbClient(dbUrl, dbUser, dbPassword)) {
+			dbClient.processResults("select code, name from class", rs -> {
+				try {
+					map.put(rs.getString("code"), rs.getString("name"));
+				} catch (final SQLException e) {
+					e.printStackTrace();
+				}
+			});
+		}
+
+		log.info("Found " + map.size() + " terms.");
+
+		return map;
+
+	}
+
+	private static String convertToJson(final Oaf oaf) {
+		try {
+			return new ObjectMapper().writeValueAsString(oaf);
+		} catch (final Exception e) {
+			throw new RuntimeException(e);
+		}
+	}
+
+	private static Oaf convertFromJson(final String s, final Class<? extends Oaf> clazz) {
+		try {
+			return new ObjectMapper().readValue(s, clazz);
+		} catch (final Exception e) {
+			log.error("Error parsing object of class: " + clazz);
+			log.error(s);
+			throw new RuntimeException(e);
+		}
+	}
+
+	private static boolean exists(final JavaSparkContext context, final String pathToFile) {
+		try {
+			final FileSystem hdfs = org.apache.hadoop.fs.FileSystem.get(context.hadoopConfiguration());
+			final Path path = new Path(pathToFile);
+			return hdfs.exists(path);
+		} catch (final IOException e) {
+			throw new RuntimeException(e);
+		}
+	}
+}

dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/migration/step2/OafToOafMapper.java

@@ -1,16 +1,17 @@
-package eu.dnetlib.dhp.migration;
+package eu.dnetlib.dhp.migration.step2;
+
+import static eu.dnetlib.dhp.migration.utils.OafMapperUtils.createOpenaireId;
+import static eu.dnetlib.dhp.migration.utils.OafMapperUtils.field;
 
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Map;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.dom4j.Document;
 import org.dom4j.Node;
 
-import eu.dnetlib.dhp.migration.pace.PacePerson;
+import eu.dnetlib.dhp.migration.utils.PacePerson;
 import eu.dnetlib.dhp.schema.oaf.Author;
 import eu.dnetlib.dhp.schema.oaf.DataInfo;
 import eu.dnetlib.dhp.schema.oaf.Field;
@@ -22,20 +23,10 @@ import eu.dnetlib.dhp.schema.oaf.Qualifier;
 import eu.dnetlib.dhp.schema.oaf.Relation;
 import eu.dnetlib.dhp.schema.oaf.StructuredProperty;
 
-public class OafMigrationExecutor extends AbstractMongoExecutor {
+public class OafToOafMapper extends AbstractMdRecordToOafMapper {
 
-	private static final Log log = LogFactory.getLog(OafMigrationExecutor.class);
+	public OafToOafMapper(final Map<String, String> code2name) {
-
+		super(code2name);
-	public OafMigrationExecutor(final String hdfsPath, final String hdfsNameNode, final String hdfsUser, final String mongoBaseUrl, final String mongoDb,
-			final String dbUrl, final String dbUser,
-			final String dbPassword) throws Exception {
-		super(hdfsPath, hdfsNameNode, hdfsUser, mongoBaseUrl, mongoDb, dbUrl, dbUser, dbPassword);
-	}
-
-	@Override
-	protected void registerNamespaces(final Map<String, String> nsContext) {
-		super.registerNamespaces(nsContext);
-		nsContext.put("dc", "http://purl.org/dc/elements/1.1/");
 	}
 
 	@Override

dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/migration/step2/OdfToOafMapper.java

@@ -1,4 +1,8 @@
-package eu.dnetlib.dhp.migration;
+package eu.dnetlib.dhp.migration.step2;
+
+import static eu.dnetlib.dhp.migration.utils.OafMapperUtils.createOpenaireId;
+import static eu.dnetlib.dhp.migration.utils.OafMapperUtils.field;
+import static eu.dnetlib.dhp.migration.utils.OafMapperUtils.structuredProperty;
 
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -6,8 +10,6 @@ import java.util.List;
 import java.util.Map;
 
 import org.apache.commons.lang3.StringUtils;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.dom4j.Document;
 import org.dom4j.Node;
 
@@ -22,38 +24,28 @@ import eu.dnetlib.dhp.schema.oaf.Qualifier;
 import eu.dnetlib.dhp.schema.oaf.Relation;
 import eu.dnetlib.dhp.schema.oaf.StructuredProperty;
 
-public class OdfMigrationExecutor extends AbstractMongoExecutor {
+public class OdfToOafMapper extends AbstractMdRecordToOafMapper {
 
-	private static final Log log = LogFactory.getLog(OdfMigrationExecutor.class);
+	public OdfToOafMapper(final Map<String, String> code2name) {
-
+		super(code2name);
-	public OdfMigrationExecutor(final String hdfsPath, final String hdfsNameNode, final String hdfsUser, final String mongoBaseUrl, final String mongoDb,
-			final String dbUrl, final String dbUser,
-			final String dbPassword) throws Exception {
-		super(hdfsPath, hdfsNameNode, hdfsUser, mongoBaseUrl, mongoDb, dbUrl, dbUser, dbPassword);
-	}
-
-	@Override
-	protected void registerNamespaces(final Map<String, String> nsContext) {
-		super.registerNamespaces(nsContext);
-		nsContext.put("dc", "http://datacite.org/schema/kernel-3");
 	}
 
 	@Override
 	protected List<StructuredProperty> prepareTitles(final Document doc, final DataInfo info) {
-		return prepareListStructProps(doc, "//dc:title", MAIN_TITLE_QUALIFIER, info);
+		return prepareListStructProps(doc, "//datacite:title", MAIN_TITLE_QUALIFIER, info);
 	}
 
 	@Override
 	protected List<Author> prepareAuthors(final Document doc, final DataInfo info) {
 		final List<Author> res = new ArrayList<>();
 		int pos = 1;
-		for (final Object o : doc.selectNodes("//dc:creator")) {
+		for (final Object o : doc.selectNodes("//datacite:creator")) {
 			final Node n = (Node) o;
 			final Author author = new Author();
-			author.setFullname(n.valueOf("./dc:creatorName"));
+			author.setFullname(n.valueOf("./datacite:creatorName"));
-			author.setName(n.valueOf("./dc:givenName"));
+			author.setName(n.valueOf("./datacite:givenName"));
-			author.setSurname(n.valueOf("./dc:familyName"));
+			author.setSurname(n.valueOf("./datacite:familyName"));
-			author.setAffiliation(prepareListFields(doc, "./dc:affiliation", info));
+			author.setAffiliation(prepareListFields(doc, "./datacite:affiliation", info));
 			author.setPid(preparePids(doc, info));
 			author.setRank(pos++);
 			res.add(author);
@@ -63,7 +55,7 @@ public class OdfMigrationExecutor extends AbstractMongoExecutor {
 
 	private List<StructuredProperty> preparePids(final Document doc, final DataInfo info) {
 		final List<StructuredProperty> res = new ArrayList<>();
-		for (final Object o : doc.selectNodes("./dc:nameIdentifier")) {
+		for (final Object o : doc.selectNodes("./datacite:nameIdentifier")) {
 			res.add(structuredProperty(((Node) o).getText(), prepareQualifier((Node) o, "./@nameIdentifierScheme", "dnet:pid_types", "dnet:pid_types"), info));
 		}
 		return res;
@@ -72,7 +64,7 @@ public class OdfMigrationExecutor extends AbstractMongoExecutor {
 	@Override
 	protected List<Instance> prepareInstances(final Document doc, final DataInfo info, final KeyValue collectedfrom, final KeyValue hostedby) {
 		final List<Instance> res = new ArrayList<>();
-		for (final Object o : doc.selectNodes("//dc:alternateIdentifier[@alternateIdentifierType='URL']")) {
+		for (final Object o : doc.selectNodes("//datacite:alternateIdentifier[@alternateIdentifierType='URL']")) {
 			final Instance instance = new Instance();
 			instance.setUrl(Arrays.asList(((Node) o).getText().trim()));
 			instance.setInstancetype(prepareQualifier(doc, "//dr:CobjCategory", "dnet:publication_resource", "dnet:publication_resource"));
@@ -98,7 +90,7 @@ public class OdfMigrationExecutor extends AbstractMongoExecutor {
 	@Override
 	protected List<StructuredProperty> prepareRelevantDates(final Document doc, final DataInfo info) {
 		final List<StructuredProperty> res = new ArrayList<>();
-		for (final Object o : doc.selectNodes("//dc:date")) {
+		for (final Object o : doc.selectNodes("//datacite:date")) {
 			final String dateType = ((Node) o).valueOf("@dateType");
 			if (StringUtils.isBlank(dateType) && !dateType.equalsIgnoreCase("Accepted") && !dateType.equalsIgnoreCase("Issued")
 					&& !dateType.equalsIgnoreCase("Updated") && !dateType.equalsIgnoreCase("Available")) {
@@ -115,32 +107,32 @@ public class OdfMigrationExecutor extends AbstractMongoExecutor {
 
 	@Override
 	protected List<Field<String>> prepareContributors(final Document doc, final DataInfo info) {
-		return prepareListFields(doc, "//dc:contributorName", info);
+		return prepareListFields(doc, "//datacite:contributorName", info);
 	}
 
 	@Override
 	protected List<Field<String>> prepareFormats(final Document doc, final DataInfo info) {
-		return prepareListFields(doc, "//dc:format", info);
+		return prepareListFields(doc, "//datacite:format", info);
 	}
 
 	@Override
 	protected Field<String> preparePublisher(final Document doc, final DataInfo info) {
-		return prepareField(doc, "//dc:publisher", info);
+		return prepareField(doc, "//datacite:publisher", info);
 	}
 
 	@Override
 	protected List<Field<String>> prepareDescriptions(final Document doc, final DataInfo info) {
-		return prepareListFields(doc, "//dc:description[@descriptionType='Abstract']", info);
+		return prepareListFields(doc, "//datacite:description[@descriptionType='Abstract']", info);
 	}
 
 	@Override
 	protected List<StructuredProperty> prepareSubjects(final Document doc, final DataInfo info) {
-		return prepareListStructProps(doc, "//dc:subject", info);
+		return prepareListStructProps(doc, "//datacite:subject", info);
 	}
 
 	@Override
 	protected Qualifier prepareLanguages(final Document doc) {
-		return prepareQualifier(doc, "//dc:language", "dnet:languages", "dnet:languages");
+		return prepareQualifier(doc, "//datacite:language", "dnet:languages", "dnet:languages");
 	}
 
 	@Override
@@ -150,17 +142,17 @@ public class OdfMigrationExecutor extends AbstractMongoExecutor {
 
 	@Override
 	protected List<Field<String>> prepareOtherResearchProductContactGroups(final Document doc, final DataInfo info) {
-		return prepareListFields(doc, "//dc:contributor[@contributorType='ContactGroup']/dc:contributorName", info);
+		return prepareListFields(doc, "//datacite:contributor[@contributorType='ContactGroup']/datacite:contributorName", info);
 	}
 
 	@Override
 	protected List<Field<String>> prepareOtherResearchProductContactPersons(final Document doc, final DataInfo info) {
-		return prepareListFields(doc, "//dc:contributor[@contributorType='ContactPerson']/dc:contributorName", info);
+		return prepareListFields(doc, "//datacite:contributor[@contributorType='ContactPerson']/datacite:contributorName", info);
 	}
 
 	@Override
 	protected Qualifier prepareSoftwareProgrammingLanguage(final Document doc, final DataInfo info) {
-		return prepareQualifier(doc, "//dc:format", "dnet:programming_languages", "dnet:programming_languages");
+		return prepareQualifier(doc, "//datacite:format", "dnet:programming_languages", "dnet:programming_languages");
 	}
 
 	@Override
@@ -175,7 +167,7 @@ public class OdfMigrationExecutor extends AbstractMongoExecutor {
 
 	@Override
 	protected List<Field<String>> prepareSoftwareDocumentationUrls(final Document doc, final DataInfo info) {
-		return prepareListFields(doc, "//dc:relatedIdentifier[@relatedIdentifierType='URL' and @relationType='IsDocumentedBy']", info);
+		return prepareListFields(doc, "//datacite:relatedIdentifier[@relatedIdentifierType='URL' and @relationType='IsDocumentedBy']", info);
 	}
 
 	// DATASETS
@@ -184,11 +176,11 @@ public class OdfMigrationExecutor extends AbstractMongoExecutor {
 	protected List<GeoLocation> prepareDatasetGeoLocations(final Document doc, final DataInfo info) {
 		final List<GeoLocation> res = new ArrayList<>();
 
-		for (final Object o : doc.selectNodes("//dc:geoLocation")) {
+		for (final Object o : doc.selectNodes("//datacite:geoLocation")) {
 			final GeoLocation loc = new GeoLocation();
-			loc.setBox(((Node) o).valueOf("./dc:geoLocationBox"));
+			loc.setBox(((Node) o).valueOf("./datacite:geoLocationBox"));
-			loc.setPlace(((Node) o).valueOf("./dc:geoLocationPlace"));
+			loc.setPlace(((Node) o).valueOf("./datacite:geoLocationPlace"));
-			loc.setPoint(((Node) o).valueOf("./dc:geoLocationPoint"));
+			loc.setPoint(((Node) o).valueOf("./datacite:geoLocationPoint"));
 			res.add(loc);
 		}
 		return res;
@@ -201,17 +193,17 @@ public class OdfMigrationExecutor extends AbstractMongoExecutor {
 
 	@Override
 	protected Field<String> prepareDatasetLastMetadataUpdate(final Document doc, final DataInfo info) {
-		return prepareField(doc, "//dc:date[@dateType='Updated']", info);
+		return prepareField(doc, "//datacite:date[@dateType='Updated']", info);
 	}
 
 	@Override
 	protected Field<String> prepareDatasetVersion(final Document doc, final DataInfo info) {
-		return prepareField(doc, "//dc:version", info);
+		return prepareField(doc, "//datacite:version", info);
 	}
 
 	@Override
 	protected Field<String> prepareDatasetSize(final Document doc, final DataInfo info) {
-		return prepareField(doc, "//dc:size", info);
+		return prepareField(doc, "//datacite:size", info);
 	}
 
 	@Override
@@ -221,7 +213,7 @@ public class OdfMigrationExecutor extends AbstractMongoExecutor {
 
 	@Override
 	protected Field<String> prepareDatasetStorageDate(final Document doc, final DataInfo info) {
-		return prepareField(doc, "//dc:date[@dateType='Issued']", info);
+		return prepareField(doc, "//datacite:date[@dateType='Issued']", info);
 	}
 
 	@Override

dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/migration/step3/DispatchEntitiesApplication.java

@@ -0,0 +1,68 @@
+package eu.dnetlib.dhp.migration.step3;
+
+import org.apache.commons.io.IOUtils;
+import org.apache.commons.lang3.StringUtils;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.spark.api.java.JavaSparkContext;
+import org.apache.spark.sql.SparkSession;
+
+import eu.dnetlib.dhp.application.ArgumentApplicationParser;
+import eu.dnetlib.dhp.migration.step1.MigrateMongoMdstoresApplication;
+import eu.dnetlib.dhp.schema.oaf.Dataset;
+import eu.dnetlib.dhp.schema.oaf.Datasource;
+import eu.dnetlib.dhp.schema.oaf.Organization;
+import eu.dnetlib.dhp.schema.oaf.OtherResearchProduct;
+import eu.dnetlib.dhp.schema.oaf.Project;
+import eu.dnetlib.dhp.schema.oaf.Publication;
+import eu.dnetlib.dhp.schema.oaf.Relation;
+import eu.dnetlib.dhp.schema.oaf.Software;
+
+public class DispatchEntitiesApplication {
+
+	private static final Log log = LogFactory.getLog(DispatchEntitiesApplication.class);
+
+	public static void main(final String[] args) throws Exception {
+		final ArgumentApplicationParser parser = new ArgumentApplicationParser(
+				IOUtils.toString(MigrateMongoMdstoresApplication.class
+						.getResourceAsStream("/eu/dnetlib/dhp/migration/dispatch_entities_parameters.json")));
+		parser.parseArgument(args);
+
+		final SparkSession spark = SparkSession
+				.builder()
+				.appName(DispatchEntitiesApplication.class.getSimpleName())
+				.master(parser.get("master"))
+				.getOrCreate();
+
+		try (final JavaSparkContext sc = new JavaSparkContext(spark.sparkContext())) {
+
+			final String sourcePath = parser.get("sourcePath");
+			final String targetPath = parser.get("graphRawPath");
+
+			processEntity(sc, Publication.class, sourcePath, targetPath);
+			processEntity(sc, Dataset.class, sourcePath, targetPath);
+			processEntity(sc, Software.class, sourcePath, targetPath);
+			processEntity(sc, OtherResearchProduct.class, sourcePath, targetPath);
+			processEntity(sc, Datasource.class, sourcePath, targetPath);
+			processEntity(sc, Organization.class, sourcePath, targetPath);
+			processEntity(sc, Project.class, sourcePath, targetPath);
+			processEntity(sc, Relation.class, sourcePath, targetPath);
+		}
+	}
+
+	private static void processEntity(final JavaSparkContext sc, final Class<?> clazz, final String sourcePath, final String targetPath) {
+		final String type = clazz.getSimpleName().toLowerCase();
+
+		log.info(String.format("Processing entities (%s) in file: %s", type, sourcePath));
+
+		sc.textFile(sourcePath)
+				.filter(l -> isEntityType(l, type))
+				.map(l -> StringUtils.substringAfter(l, "|"))
+				.saveAsTextFile(targetPath + "/" + type); // use repartition(XXX) ???
+	}
+
+	private static boolean isEntityType(final String line, final String type) {
+		return StringUtils.substringBefore(line, "|").equalsIgnoreCase(type);
+	}
+
+}

dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/migration/utils/AbstractMigrationApplication.java

@@ -0,0 +1,80 @@
+package eu.dnetlib.dhp.migration.utils;
+
+import java.io.Closeable;
+import java.io.IOException;
+import java.net.URI;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.io.SequenceFile;
+import org.apache.hadoop.io.Text;
+import org.codehaus.jackson.map.ObjectMapper;
+
+import eu.dnetlib.dhp.schema.oaf.Oaf;
+
+public class AbstractMigrationApplication implements Closeable {
+
+	private final AtomicInteger counter = new AtomicInteger(0);
+
+	private final Text key = new Text();
+
+	private final Text value = new Text();
+
+	private final SequenceFile.Writer writer;
+
+	private final ObjectMapper objectMapper = new ObjectMapper();
+
+	private static final Log log = LogFactory.getLog(AbstractMigrationApplication.class);
+
+	public AbstractMigrationApplication(final String hdfsPath, final String hdfsNameNode, final String hdfsUser) throws Exception {
+
+		log.info(String.format("Creating SequenceFile Writer, hdfsPath=%s, nameNode=%s, user=%s", hdfsPath, hdfsNameNode, hdfsUser));
+
+		this.writer = SequenceFile.createWriter(getConf(hdfsNameNode, hdfsUser), SequenceFile.Writer.file(new Path(hdfsPath)), SequenceFile.Writer
+				.keyClass(Text.class), SequenceFile.Writer.valueClass(Text.class));
+	}
+
+	private Configuration getConf(final String hdfsNameNode, final String hdfsUser) throws IOException {
+		final Configuration conf = new Configuration();
+		conf.set("fs.defaultFS", hdfsNameNode);
+		conf.set("fs.hdfs.impl", org.apache.hadoop.hdfs.DistributedFileSystem.class.getName());
+		conf.set("fs.file.impl", org.apache.hadoop.fs.LocalFileSystem.class.getName());
+		System.setProperty("HADOOP_USER_NAME", hdfsUser);
+		System.setProperty("hadoop.home.dir", "/");
+		FileSystem.get(URI.create(hdfsNameNode), conf);
+		return conf;
+	}
+
+	protected void emit(final String s, final String type) {
+		try {
+			key.set(counter.getAndIncrement() + ":" + type);
+			value.set(s);
+			writer.append(key, value);
+		} catch (final Exception e) {
+			throw new RuntimeException(e);
+		}
+	}
+
+	protected void emitOaf(final Oaf oaf) {
+		try {
+			emit(objectMapper.writeValueAsString(oaf), oaf.getClass().getSimpleName().toLowerCase());
+		} catch (final Exception e) {
+			throw new RuntimeException(e);
+		}
+	}
+
+	public ObjectMapper getObjectMapper() {
+		return objectMapper;
+	}
+
+	@Override
+	public void close() throws IOException {
+		writer.hflush();
+		writer.close();
+	}
+
+}

dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/migration/utils/DbClient.java

@@ -1,4 +1,4 @@
-package eu.dnetlib.dhp.migration;
+package eu.dnetlib.dhp.migration.utils;
 
 import java.io.Closeable;
 import java.io.IOException;

dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/migration/utils/MdstoreClient.java

@@ -1,4 +1,4 @@
-package eu.dnetlib.dhp.migration;
+package eu.dnetlib.dhp.migration.utils;
 
 import java.io.Closeable;
 import java.io.IOException;

dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/migration/utils/OafMapperUtils.java

@@ -1,24 +1,12 @@
-package eu.dnetlib.dhp.migration;
+package eu.dnetlib.dhp.migration.utils;
 
-import java.io.Closeable;
-import java.io.IOException;
-import java.net.URI;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Objects;
-import java.util.concurrent.atomic.AtomicInteger;
 import java.util.stream.Collectors;
 
 import org.apache.commons.lang3.StringUtils;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
-import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.fs.FileSystem;
-import org.apache.hadoop.fs.Path;
-import org.apache.hadoop.io.SequenceFile;
-import org.apache.hadoop.io.Text;
-import org.codehaus.jackson.map.ObjectMapper;
 
 import eu.dnetlib.dhp.schema.oaf.DataInfo;
 import eu.dnetlib.dhp.schema.oaf.ExtraInfo;
@@ -26,60 +14,12 @@ import eu.dnetlib.dhp.schema.oaf.Field;
 import eu.dnetlib.dhp.schema.oaf.Journal;
 import eu.dnetlib.dhp.schema.oaf.KeyValue;
 import eu.dnetlib.dhp.schema.oaf.OAIProvenance;
-import eu.dnetlib.dhp.schema.oaf.Oaf;
 import eu.dnetlib.dhp.schema.oaf.OriginDescription;
 import eu.dnetlib.dhp.schema.oaf.Qualifier;
 import eu.dnetlib.dhp.schema.oaf.StructuredProperty;
 import eu.dnetlib.dhp.utils.DHPUtils;
 
-public class AbstractMigrationExecutor implements Closeable {
+public class OafMapperUtils {
-
-	private final AtomicInteger counter = new AtomicInteger(0);
-
-	private final Text key = new Text();
-
-	private final Text value = new Text();
-
-	private final ObjectMapper objectMapper = new ObjectMapper();
-
-	private final SequenceFile.Writer writer;
-
-	private static final Log log = LogFactory.getLog(AbstractMigrationExecutor.class);
-
-	public AbstractMigrationExecutor(final String hdfsPath, final String hdfsNameNode, final String hdfsUser) throws Exception {
-
-		log.info(String.format("Creating SequenceFile Writer, hdfsPath=%s, nameNode=%s, user=%s", hdfsPath, hdfsNameNode, hdfsUser));
-
-		this.writer = SequenceFile.createWriter(getConf(hdfsNameNode, hdfsUser), SequenceFile.Writer.file(new Path(hdfsPath)), SequenceFile.Writer
-				.keyClass(Text.class), SequenceFile.Writer.valueClass(Text.class));
-	}
-
-	private Configuration getConf(final String hdfsNameNode, final String hdfsUser) throws IOException {
-		final Configuration conf = new Configuration();
-		conf.set("fs.defaultFS", hdfsNameNode);
-		conf.set("fs.hdfs.impl", org.apache.hadoop.hdfs.DistributedFileSystem.class.getName());
-		conf.set("fs.file.impl", org.apache.hadoop.fs.LocalFileSystem.class.getName());
-		System.setProperty("HADOOP_USER_NAME", hdfsUser);
-		System.setProperty("hadoop.home.dir", "/");
-		FileSystem.get(URI.create(hdfsNameNode), conf);
-		return conf;
-	}
-
-	protected void emitOaf(final Oaf oaf) {
-		try {
-			key.set(counter.getAndIncrement() + ":" + oaf.getClass().getSimpleName().toLowerCase());
-			value.set(objectMapper.writeValueAsString(oaf));
-			writer.append(key, value);
-		} catch (final Exception e) {
-			throw new RuntimeException(e);
-		}
-	}
-
-	@Override
-	public void close() throws IOException {
-		writer.hflush();
-		writer.close();
-	}
 
 	public static KeyValue keyValue(final String k, final String v) {
 		final KeyValue kv = new KeyValue();
@@ -247,4 +187,5 @@ public class AbstractMigrationExecutor implements Closeable {
 	public static String asString(final Object o) {
 		return o == null ? "" : o.toString();
 	}
+
 }

dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/migration/utils/PacePerson.java

@@ -1,4 +1,4 @@
-package eu.dnetlib.dhp.migration.pace;
+package eu.dnetlib.dhp.migration.utils;
 
 import java.nio.charset.Charset;
 import java.text.Normalizer;

dhp-workflows/dhp-aggregation/src/main/resources/eu/dnetlib/dhp/migration/dispatch_entities_parameters.json

@@ -1,8 +1,8 @@
 [
 	{
 		"paramName": "s",
-		"paramLongName": "sourcePaths",
+		"paramLongName": "sourcePath",
-		"paramDescription": "the HDFS  source paths which contains the sequential file (comma separated)",
+		"paramDescription": "the source path",
 		"paramRequired": true
 	},
 	{

dhp-workflows/dhp-aggregation/src/main/resources/eu/dnetlib/dhp/migration/generate_entities_parameters.json

@@ -0,0 +1,39 @@
+[
+	{
+		"paramName": "s",
+		"paramLongName": "sourcePaths",
+		"paramDescription": "the HDFS source paths which contains the sequential file (comma separated)",
+		"paramRequired": true
+	},
+	{
+		"paramName": "mt",
+		"paramLongName": "master",
+		"paramDescription": "should be local or yarn",
+		"paramRequired": true
+	},
+	{
+		"paramName": "t",
+		"paramLongName": "targetPath",
+		"paramDescription": "the path of the target file",
+		"paramRequired": true
+	},
+	{
+		"paramName": "pgurl",
+		"paramLongName": "postgresUrl",
+		"paramDescription": "postgres url, example: jdbc:postgresql://localhost:5432/testdb",
+		"paramRequired": true
+	},
+	{
+		"paramName": "pguser",
+		"paramLongName": "postgresUser",
+		"paramDescription": "postgres user",
+		"paramRequired": false
+	},
+	{
+		"paramName": "pgpasswd",
+		"paramLongName": "postgresPassword",
+		"paramDescription": "postgres password",
+		"paramRequired": false
+	}
+
+]

dhp-workflows/dhp-aggregation/src/main/resources/eu/dnetlib/dhp/migration/migrate_db_entities_parameters.json

@@ -18,19 +18,19 @@
 		"paramRequired": true
 	},
 	{
-		"paramName": "dburl",
+		"paramName": "pgurl",
 		"paramLongName": "postgresUrl",
 		"paramDescription": "postgres url, example: jdbc:postgresql://localhost:5432/testdb",
 		"paramRequired": true
 	},
 	{
-		"paramName": "dbuser",
+		"paramName": "pguser",
 		"paramLongName": "postgresUser",
 		"paramDescription": "postgres user",
 		"paramRequired": false
 	},
 	{
-		"paramName": "dbpasswd",
+		"paramName": "pgpasswd",
 		"paramLongName": "postgresPassword",
 		"paramDescription": "postgres password",
 		"paramRequired": false

dhp-workflows/dhp-aggregation/src/main/resources/eu/dnetlib/dhp/migration/migrate_mongo_mstores_parameters.json

@@ -24,7 +24,7 @@
 		"paramRequired": true
 	},
 	{
-		"paramName": "db",
+		"paramName": "mongodb",
 		"paramLongName": "mongoDb",
 		"paramDescription": "mongo database",
 		"paramRequired": true
@@ -46,23 +46,5 @@
 		"paramLongName": "mdInterpretation",
 		"paramDescription": "metadata interpretation",
 		"paramRequired": true
-	},
-	{
-		"paramName": "pgurl",
-		"paramLongName": "postgresUrl",
-		"paramDescription": "postgres url, example: jdbc:postgresql://localhost:5432/testdb",
-		"paramRequired": true
-	},
-	{
-		"paramName": "pguser",
-		"paramLongName": "postgresUser",
-		"paramDescription": "postgres user",
-		"paramRequired": false
-	},
-	{
-		"paramName": "pgpasswd",
-		"paramLongName": "postgresPassword",
-		"paramDescription": "postgres password",
-		"paramRequired": false
 	}
 ]

dhp-workflows/dhp-aggregation/src/main/resources/eu/dnetlib/dhp/migration/wfs/claims/oozie_app/workflow.xml

@@ -1,14 +1,17 @@
-<workflow-app name="import Entities from aggretor to HDFS" xmlns="uri:oozie:workflow:0.5">
+<workflow-app name="import Claims as Graph" xmlns="uri:oozie:workflow:0.5">
     <parameters>
         <property>
-            <name>workingPath</name>
+            <name>migrationClaimsPathStep1</name>
             <description>the base path to store hdfs file</description>
         </property>
         <property>
-            <name>graphRawPath</name>
+            <name>migrationClaimsPathStep2</name>
+            <description>the temporary path to store entities before dispatching</description>
+        </property>
+        <property>
+            <name>migrationClaimsPathStep3</name>
             <description>the graph Raw base path</description>
         </property>
-
         <property>
             <name>postgresURL</name>
             <description>the postgres URL to access to the database</description>
@@ -22,7 +25,7 @@
             <description>the password postgres</description>
         </property>
         <property>
-            <name>mongourl</name>
+            <name>mongoURL</name>
             <description>mongoDB url, example: mongodb://[username:password@]host[:port]</description>
         </property>
         <property>
@@ -43,7 +46,7 @@
         </property>
     </parameters>
 
-    <start to="ResetWorkingPath"/>
+	<start to="ResetWorkingPath"/>
 
     <kill name="Kill">
         <message>Action failed, error message[${wf:errorMessage(wf:lastErrorNode())}]</message>
@@ -51,143 +54,118 @@
 
     <action name="ResetWorkingPath">
         <fs>
-            <delete path='${workingPath}'/>
+            <delete path='${migrationClaimsPathStep1}'/>
-            <mkdir path='${workingPath}'/>
+            <mkdir path='${migrationClaimsPathStep1}'/>
         </fs>
-        <ok to="ImportEntitiesFromPostgres"/>
+        <ok to="ImportDBClaims"/>
         <error to="Kill"/>
     </action>
    
-    <action name="ImportEntitiesFromPostgres">
+    <action name="ImportDBClaims">
         <java>
             <job-tracker>${jobTracker}</job-tracker>
             <name-node>${nameNode}</name-node>
-            <main-class>eu.dnetlib.dhp.migration.MigrateDbEntitiesApplication</main-class>
+            <main-class>eu.dnetlib.dhp.migration.step1.MigrateDbEntitiesApplication</main-class>
-            <arg>-p</arg><arg>${workingPath}/db_entities</arg>
+            <arg>-p</arg><arg>${migrationClaimsPathStep1}/db_claims</arg>
             <arg>-n</arg><arg>${nameNode}</arg>
             <arg>-u</arg><arg>${hdfsUser}</arg>
-            <arg>-dburl</arg><arg>${postgresURL}</arg>
+            <arg>-pgurl</arg><arg>${postgresURL}</arg>
-            <arg>-dbuser</arg><arg>${postgresUser}</arg>
+            <arg>-pguser</arg><arg>${postgresUser}</arg>
-            <arg>-dbpasswd</arg><arg>${postgresPassword}</arg>
+            <arg>-pgpasswd</arg><arg>${postgresPassword}</arg>
-        </java>
-        <ok to="ImportClaimsFromPostgres"/>
-        <error to="Kill"/>
-    </action>
-    
-    <action name="ImportClaimsFromPostgres">
-        <java>
-            <job-tracker>${jobTracker}</job-tracker>
-            <name-node>${nameNode}</name-node>
-            <main-class>eu.dnetlib.dhp.migration.MigrateDbEntitiesApplication</main-class>
-            <arg>-p</arg><arg>${workingPath}/db_claims</arg>
-            <arg>-n</arg><arg>${nameNode}</arg>
-            <arg>-u</arg><arg>${hdfsUser}</arg>
-            <arg>-dburl</arg><arg>${postgresURL}</arg>
-            <arg>-dbuser</arg><arg>${postgresUser}</arg>
-            <arg>-dbpasswd</arg><arg>${postgresPassword}</arg>
             <arg>-a</arg><arg>claims</arg>
         </java>
-        <ok to="ImportODFEntitiesFromMongoDB"/>
+		<ok to="ImportODFClaims"/>
         <error to="Kill"/>
     </action>
     
-    <action name="ImportODFEntitiesFromMongoDB">
+    <action name="ImportODFClaims">
         <java>
             <job-tracker>${jobTracker}</job-tracker>
             <name-node>${nameNode}</name-node>
-            <main-class>eu.dnetlib.dhp.migration.MigrateMongoMdstoresApplication</main-class>
+            <main-class>eu.dnetlib.dhp.migration.step1.MigrateMongoMdstoresApplication</main-class>
-            <arg>-p</arg><arg>${workingPath}/odf_entities</arg>
+            <arg>-p</arg><arg>${migrationClaimsPathStep1}/odf_claims</arg>
             <arg>-n</arg><arg>${nameNode}</arg>
             <arg>-u</arg><arg>${hdfsUser}</arg>
-            <arg>-mongourl</arg><arg>${mongourl}</arg>
+            <arg>-mongourl</arg><arg>${mongoURL}</arg>
-            <arg>-db</arg><arg>${mongoDb}</arg>
+            <arg>-mongodb</arg><arg>${mongoDb}</arg>
-            <arg>-f</arg><arg>ODF</arg>
-            <arg>-l</arg><arg>store</arg>
-            <arg>-i</arg><arg>cleaned</arg>
-            <arg>-pgurl</arg><arg>${postgresURL}</arg>
-            <arg>-pguser</arg><arg>${postgresUser}</arg>
-            <arg>-pgpasswd</arg><arg>${postgresPassword}</arg>
-        </java>
-        <ok to="ImportOAFEntitiesFromMongoDB"/>
-        <error to="Kill"/>
-    </action>
-
-    <action name="ImportOAFEntitiesFromMongoDB">
-        <java>
-            <job-tracker>${jobTracker}</job-tracker>
-            <name-node>${nameNode}</name-node>
-            <main-class>eu.dnetlib.dhp.migration.MigrateMongoMdstoresApplication</main-class>
-            <arg>-p</arg><arg>${workingPath}/oaf_entities</arg>
-            <arg>-n</arg><arg>${nameNode}</arg>
-            <arg>-u</arg><arg>${hdfsUser}</arg>
-            <arg>-mongourl</arg><arg>${mongourl}</arg>
-            <arg>-db</arg><arg>${mongoDb}</arg>
-            <arg>-f</arg><arg>OAF</arg>
-            <arg>-l</arg><arg>store</arg>
-            <arg>-i</arg><arg>cleaned</arg>
-            <arg>-pgurl</arg><arg>${postgresURL}</arg>
-            <arg>-pguser</arg><arg>${postgresUser}</arg>
-            <arg>-pgpasswd</arg><arg>${postgresPassword}</arg>
-        </java>
-        <ok to="ImportODFClaimsFromMongoDB"/>
-        <error to="Kill"/>
-    </action>
-    
-    <action name="ImportODFClaimsFromMongoDB">
-        <java>
-            <job-tracker>${jobTracker}</job-tracker>
-            <name-node>${nameNode}</name-node>
-            <main-class>eu.dnetlib.dhp.migration.MigrateMongoMdstoresApplication</main-class>
-            <arg>-p</arg><arg>${workingPath}/odf_claims</arg>
-            <arg>-n</arg><arg>${nameNode}</arg>
-            <arg>-u</arg><arg>${hdfsUser}</arg>
-            <arg>-mongourl</arg><arg>${mongourl}</arg>
-            <arg>-db</arg><arg>${mongoDb}</arg>
             <arg>-f</arg><arg>ODF</arg>
             <arg>-l</arg><arg>store</arg>
             <arg>-i</arg><arg>claim</arg>
-            <arg>-pgurl</arg><arg>${postgresURL}</arg>
-            <arg>-pguser</arg><arg>${postgresUser}</arg>
-            <arg>-pgpasswd</arg><arg>${postgresPassword}</arg>
         </java>
-        <ok to="ImportOAFClaimsFromMongoDB"/>
+        <ok to="ImportOAFClaims"/>
         <error to="Kill"/>
     </action>
 
-    <action name="ImportOAFClaimsFromMongoDB">
+    <action name="ImportOAFClaims">
         <java>
             <job-tracker>${jobTracker}</job-tracker>
             <name-node>${nameNode}</name-node>
-            <main-class>eu.dnetlib.dhp.migration.MigrateMongoMdstoresApplication</main-class>
+            <main-class>eu.dnetlib.dhp.migration.step1.MigrateMongoMdstoresApplication</main-class>
-            <arg>-p</arg><arg>${workingPath}/oaf_claims</arg>
+            <arg>-p</arg><arg>${migrationClaimsPathStep1}/oaf_claims</arg>
             <arg>-n</arg><arg>${nameNode}</arg>
             <arg>-u</arg><arg>${hdfsUser}</arg>
-            <arg>-mongourl</arg><arg>${mongourl}</arg>
+            <arg>-mongourl</arg><arg>${mongoURL}</arg>
-            <arg>-db</arg><arg>${mongoDb}</arg>
+            <arg>-mongodb</arg><arg>${mongoDb}</arg>
             <arg>-f</arg><arg>OAF</arg>
             <arg>-l</arg><arg>store</arg>
             <arg>-i</arg><arg>claim</arg>
-            <arg>-pgurl</arg><arg>${postgresURL}</arg>
-            <arg>-pguser</arg><arg>${postgresUser}</arg>
-            <arg>-pgpasswd</arg><arg>${postgresPassword}</arg>
         </java>
-        <ok to="ExtractEntities"/>
+        <ok to="ResetClaimEntities"/>
         <error to="Kill"/>
     </action>
 
-    <action name="ExtractEntities">
+	<action name="ResetClaimEntities">
+        <fs>
+            <delete path='${migrationClaimsPathStep2}'/>
+            <mkdir path='${migrationClaimsPathStep2}'/>
+        </fs>
+        <ok to="GenerateClaimEntities"/>
+        <error to="Kill"/>
+    </action>
+
+    <action name="GenerateClaimEntities">
         <spark xmlns="uri:oozie:spark-action:0.2">
             <job-tracker>${jobTracker}</job-tracker>
             <name-node>${nameNode}</name-node>
             <master>yarn-cluster</master>
             <mode>cluster</mode>
-            <name>ExtractEntities</name>
+            <name>GenerateClaimEntities</name>
-            <class>eu.dnetlib.dhp.migration.ExtractEntitiesFromHDFSJob</class>
+            <class>eu.dnetlib.dhp.migration.step2.GenerateEntitiesApplication</class>
             <jar>dhp-aggregation-${projectVersion}.jar</jar>
             <spark-opts>--executor-memory ${sparkExecutorMemory} --executor-cores ${sparkExecutorCores} --driver-memory=${sparkDriverMemory} --conf spark.extraListeners="com.cloudera.spark.lineage.NavigatorAppListener" --conf spark.sql.queryExecutionListeners="com.cloudera.spark.lineage.NavigatorQueryListener" --conf spark.sql.warehouse.dir="/user/hive/warehouse"</spark-opts>
             <arg>-mt</arg> <arg>yarn-cluster</arg>
-            <arg>-s</arg><arg>${workingPath}/db_entities,${workingPath}/oaf_entities,${workingPath}/odf_entities</arg>
+            <arg>-s</arg><arg>${migrationClaimsPathStep1}/db_claims,${migrationClaimsPathStep1}/oaf_claims,${migrationClaimsPathStep1}/odf_claims</arg>
-            <arg>-g</arg><arg>${graphRawPath}</arg>
+            <arg>-t</arg><arg>${migrationClaimsPathStep2}/claim_entities</arg>
+            <arg>-pgurl</arg><arg>${postgresURL}</arg>
+            <arg>-pguser</arg><arg>${postgresUser}</arg>
+            <arg>-pgpasswd</arg><arg>${postgresPassword}</arg>
+        </spark>
+        <ok to="ResetClaimGraph"/>
+        <error to="Kill"/>
+    </action>
+
+	<action name="ResetClaimGraph">
+        <fs>
+            <delete path='${migrationClaimsPathStep3}'/>
+            <mkdir path='${migrationClaimsPathStep3}'/>
+        </fs>
+        <ok to="GenerateClaimGraph"/>
+        <error to="Kill"/>
+    </action>
+
+    <action name="GenerateClaimGraph">
+        <spark xmlns="uri:oozie:spark-action:0.2">
+            <job-tracker>${jobTracker}</job-tracker>
+            <name-node>${nameNode}</name-node>
+            <master>yarn-cluster</master>
+            <mode>cluster</mode>
+            <name>GenerateClaimGraph</name>
+            <class>eu.dnetlib.dhp.migration.step3.DispatchEntitiesApplication</class>
+            <jar>dhp-aggregation-${projectVersion}.jar</jar>
+            <spark-opts>--executor-memory ${sparkExecutorMemory} --executor-cores ${sparkExecutorCores} --driver-memory=${sparkDriverMemory} --conf spark.extraListeners="com.cloudera.spark.lineage.NavigatorAppListener" --conf spark.sql.queryExecutionListeners="com.cloudera.spark.lineage.NavigatorQueryListener" --conf spark.sql.warehouse.dir="/user/hive/warehouse"</spark-opts>
+            <arg>-mt</arg> <arg>yarn-cluster</arg>
+            <arg>-s</arg><arg>${migrationClaimsPathStep2}/claim_entities</arg>
+            <arg>-g</arg><arg>${migrationClaimsPathStep3}</arg>
         </spark>
         <ok to="End"/>
         <error to="Kill"/>

dhp-workflows/dhp-aggregation/src/main/resources/eu/dnetlib/dhp/migration/wfs/regular_all_steps/oozie_app/config-default.xml

@@ -0,0 +1,22 @@
+<configuration>
+    <property>
+        <name>jobTracker</name>
+        <value>yarnRM</value>
+    </property>
+    <property>
+        <name>nameNode</name>
+        <value>hdfs://nameservice1</value>
+    </property>
+    <property>
+        <name>oozie.use.system.libpath</name>
+        <value>true</value>
+    </property>
+    <property>
+        <name>oozie.action.sharelib.for.spark</name>
+        <value>spark2</value>
+    </property>
+    <property>
+        <name>hdfsUser</name>
+        <value>dnet</value>
+    </property>
+</configuration>

dhp-workflows/dhp-aggregation/src/main/resources/eu/dnetlib/dhp/migration/wfs/regular_all_steps/oozie_app/workflow.xml

@@ -0,0 +1,174 @@
+<workflow-app name="import regular entities as Graph (all steps)" xmlns="uri:oozie:workflow:0.5">
+    <parameters>
+        <property>
+            <name>migrationPathStep1</name>
+            <description>the base path to store hdfs file</description>
+        </property>
+        <property>
+            <name>migrationPathStep2</name>
+            <description>the temporary path to store entities before dispatching</description>
+        </property>
+        <property>
+            <name>migrationPathStep3</name>
+            <description>the graph Raw base path</description>
+        </property>
+        <property>
+            <name>postgresURL</name>
+            <description>the postgres URL to access to the database</description>
+        </property>
+        <property>
+            <name>postgresUser</name>
+            <description>the user postgres</description>
+        </property>
+        <property>
+            <name>postgresPassword</name>
+            <description>the password postgres</description>
+        </property>
+        <property>
+            <name>mongoURL</name>
+            <description>mongoDB url, example: mongodb://[username:password@]host[:port]</description>
+        </property>
+        <property>
+            <name>mongoDb</name>
+            <description>mongo database</description>
+        </property>
+        <property>
+            <name>sparkDriverMemory</name>
+            <description>memory for driver process</description>
+        </property>
+        <property>
+            <name>sparkExecutorMemory</name>
+            <description>memory for individual executor</description>
+        </property>
+        <property>
+            <name>sparkExecutorCores</name>
+            <description>number of cores used by single executor</description>
+        </property>
+    </parameters>
+
+	<start to="ResetWorkingPath"/>
+
+    <kill name="Kill">
+        <message>Action failed, error message[${wf:errorMessage(wf:lastErrorNode())}]</message>
+    </kill>
+
+    <action name="ResetWorkingPath">
+        <fs>
+            <delete path='${migrationPathStep1}'/>
+            <mkdir path='${migrationPathStep1}'/>
+        </fs>
+        <ok to="ImportDB"/>
+        <error to="Kill"/>
+    </action>
+
+    <action name="ImportDB">
+        <java>
+            <job-tracker>${jobTracker}</job-tracker>
+            <name-node>${nameNode}</name-node>
+            <main-class>eu.dnetlib.dhp.migration.step1.MigrateDbEntitiesApplication</main-class>
+            <arg>-p</arg><arg>${migrationPathStep1}/db_records</arg>
+            <arg>-n</arg><arg>${nameNode}</arg>
+            <arg>-u</arg><arg>${hdfsUser}</arg>
+            <arg>-pgurl</arg><arg>${postgresURL}</arg>
+            <arg>-pguser</arg><arg>${postgresUser}</arg>
+            <arg>-pgpasswd</arg><arg>${postgresPassword}</arg>
+        </java>
+        <ok to="ImportODF"/>
+        <error to="Kill"/>
+    </action>
+    
+    <action name="ImportODF">
+        <java>
+            <job-tracker>${jobTracker}</job-tracker>
+            <name-node>${nameNode}</name-node>
+            <main-class>eu.dnetlib.dhp.migration.step1.MigrateMongoMdstoresApplication</main-class>
+            <arg>-p</arg><arg>${migrationPathStep1}/odf_records</arg>
+            <arg>-n</arg><arg>${nameNode}</arg>
+            <arg>-u</arg><arg>${hdfsUser}</arg>
+            <arg>-mongourl</arg><arg>${mongoURL}</arg>
+            <arg>-mongodb</arg><arg>${mongoDb}</arg>
+            <arg>-f</arg><arg>ODF</arg>
+            <arg>-l</arg><arg>store</arg>
+            <arg>-i</arg><arg>cleaned</arg>
+        </java>
+        <ok to="ImportOAF"/>
+        <error to="Kill"/>
+    </action>
+
+    <action name="ImportOAF">
+        <java>
+            <job-tracker>${jobTracker}</job-tracker>
+            <name-node>${nameNode}</name-node>
+            <main-class>eu.dnetlib.dhp.migration.step1.MigrateMongoMdstoresApplication</main-class>
+            <arg>-p</arg><arg>${migrationPathStep1}/oaf_records</arg>
+            <arg>-n</arg><arg>${nameNode}</arg>
+            <arg>-u</arg><arg>${hdfsUser}</arg>
+            <arg>-mongourl</arg><arg>${mongoURL}</arg>
+            <arg>-mongodb</arg><arg>${mongoDb}</arg>
+            <arg>-f</arg><arg>OAF</arg>
+            <arg>-l</arg><arg>store</arg>
+            <arg>-i</arg><arg>cleaned</arg>
+        </java>
+        <ok to="ResetEntities"/>
+        <error to="Kill"/>
+    </action>
+    
+	<action name="ResetEntities">
+        <fs>
+            <delete path='${migrationPathStep2}'/>
+            <mkdir path='${migrationPathStep2}'/>
+        </fs>
+        <ok to="GenerateEntities"/>
+        <error to="Kill"/>
+    </action>
+
+    <action name="GenerateEntities">
+        <spark xmlns="uri:oozie:spark-action:0.2">
+            <job-tracker>${jobTracker}</job-tracker>
+            <name-node>${nameNode}</name-node>
+            <master>yarn-cluster</master>
+            <mode>cluster</mode>
+            <name>GenerateEntities</name>
+            <class>eu.dnetlib.dhp.migration.step2.GenerateEntitiesApplication</class>
+            <jar>dhp-aggregation-${projectVersion}.jar</jar>
+            <spark-opts>--executor-memory ${sparkExecutorMemory} --executor-cores ${sparkExecutorCores} --driver-memory=${sparkDriverMemory} --conf spark.extraListeners="com.cloudera.spark.lineage.NavigatorAppListener" --conf spark.sql.queryExecutionListeners="com.cloudera.spark.lineage.NavigatorQueryListener" --conf spark.sql.warehouse.dir="/user/hive/warehouse"</spark-opts>
+            <arg>-mt</arg> <arg>yarn-cluster</arg>
+            <arg>-s</arg><arg>${migrationPathStep1}/db_records,${migrationPathStep1}/oaf_records,${migrationPathStep1}/odf_records</arg>
+            <arg>-t</arg><arg>${migrationPathStep2}/all_entities</arg>
+            <arg>-pgurl</arg><arg>${postgresURL}</arg>
+            <arg>-pguser</arg><arg>${postgresUser}</arg>
+            <arg>-pgpasswd</arg><arg>${postgresPassword}</arg>
+        </spark>
+        <ok to="ResetGraph"/>
+        <error to="Kill"/>
+    </action>
+
+	<action name="ResetGraph">
+        <fs>
+            <delete path='${migrationPathStep3}'/>
+            <mkdir path='${migrationPathStep3}'/>
+        </fs>
+        <ok to="GenerateGraph"/>
+        <error to="Kill"/>
+    </action>
+
+    <action name="GenerateGraph">
+        <spark xmlns="uri:oozie:spark-action:0.2">
+            <job-tracker>${jobTracker}</job-tracker>
+            <name-node>${nameNode}</name-node>
+            <master>yarn-cluster</master>
+            <mode>cluster</mode>
+            <name>GenerateGraph</name>
+            <class>eu.dnetlib.dhp.migration.step3.DispatchEntitiesApplication</class>
+            <jar>dhp-aggregation-${projectVersion}.jar</jar>
+            <spark-opts>--executor-memory ${sparkExecutorMemory} --executor-cores ${sparkExecutorCores} --driver-memory=${sparkDriverMemory} --conf spark.extraListeners="com.cloudera.spark.lineage.NavigatorAppListener" --conf spark.sql.queryExecutionListeners="com.cloudera.spark.lineage.NavigatorQueryListener" --conf spark.sql.warehouse.dir="/user/hive/warehouse"</spark-opts>
+            <arg>-mt</arg> <arg>yarn-cluster</arg>
+            <arg>-s</arg><arg>${migrationPathStep2}/all_entities</arg>
+            <arg>-g</arg><arg>${migrationPathStep3}</arg>
+        </spark>
+        <ok to="End"/>
+        <error to="Kill"/>
+    </action>  
+
+    <end name="End"/>
+</workflow-app>

dhp-workflows/dhp-aggregation/src/main/resources/eu/dnetlib/dhp/migration/wfs/regular_step1/oozie_app/config-default.xml

@@ -0,0 +1,22 @@
+<configuration>
+    <property>
+        <name>jobTracker</name>
+        <value>yarnRM</value>
+    </property>
+    <property>
+        <name>nameNode</name>
+        <value>hdfs://nameservice1</value>
+    </property>
+    <property>
+        <name>oozie.use.system.libpath</name>
+        <value>true</value>
+    </property>
+    <property>
+        <name>oozie.action.sharelib.for.spark</name>
+        <value>spark2</value>
+    </property>
+    <property>
+        <name>hdfsUser</name>
+        <value>dnet</value>
+    </property>
+</configuration>

dhp-workflows/dhp-aggregation/src/main/resources/eu/dnetlib/dhp/migration/wfs/regular_step1/oozie_app/workflow.xml

@@ -0,0 +1,109 @@
+<workflow-app name="import regular entities as Graph (step 1)" xmlns="uri:oozie:workflow:0.5">
+    <parameters>
+        <property>
+            <name>migrationPathStep1</name>
+            <description>the base path to store hdfs file</description>
+        </property>
+        <property>
+            <name>postgresURL</name>
+            <description>the postgres URL to access to the database</description>
+        </property>
+        <property>
+            <name>postgresUser</name>
+            <description>the user postgres</description>
+        </property>
+        <property>
+            <name>postgresPassword</name>
+            <description>the password postgres</description>
+        </property>
+        <property>
+            <name>mongoURL</name>
+            <description>mongoDB url, example: mongodb://[username:password@]host[:port]</description>
+        </property>
+        <property>
+            <name>mongoDb</name>
+            <description>mongo database</description>
+        </property>
+        <property>
+            <name>sparkDriverMemory</name>
+            <description>memory for driver process</description>
+        </property>
+        <property>
+            <name>sparkExecutorMemory</name>
+            <description>memory for individual executor</description>
+        </property>
+        <property>
+            <name>sparkExecutorCores</name>
+            <description>number of cores used by single executor</description>
+        </property>
+    </parameters>
+
+	<start to="ResetWorkingPath"/>
+
+    <kill name="Kill">
+        <message>Action failed, error message[${wf:errorMessage(wf:lastErrorNode())}]</message>
+    </kill>
+
+    <action name="ResetWorkingPath">
+        <fs>
+            <delete path='${migrationPathStep1}'/>
+            <mkdir path='${migrationPathStep1}'/>
+        </fs>
+        <ok to="ImportDB"/>
+        <error to="Kill"/>
+    </action>
+
+    <action name="ImportDB">
+        <java>
+            <job-tracker>${jobTracker}</job-tracker>
+            <name-node>${nameNode}</name-node>
+            <main-class>eu.dnetlib.dhp.migration.step1.MigrateDbEntitiesApplication</main-class>
+            <arg>-p</arg><arg>${migrationPathStep1}/db_records</arg>
+            <arg>-n</arg><arg>${nameNode}</arg>
+            <arg>-u</arg><arg>${hdfsUser}</arg>
+            <arg>-pgurl</arg><arg>${postgresURL}</arg>
+            <arg>-pguser</arg><arg>${postgresUser}</arg>
+            <arg>-pgpasswd</arg><arg>${postgresPassword}</arg>
+        </java>
+        <ok to="ImportODF"/>
+        <error to="Kill"/>
+    </action>
+    
+    <action name="ImportODF">
+        <java>
+            <job-tracker>${jobTracker}</job-tracker>
+            <name-node>${nameNode}</name-node>
+            <main-class>eu.dnetlib.dhp.migration.step1.MigrateMongoMdstoresApplication</main-class>
+            <arg>-p</arg><arg>${migrationPathStep1}/odf_records</arg>
+            <arg>-n</arg><arg>${nameNode}</arg>
+            <arg>-u</arg><arg>${hdfsUser}</arg>
+            <arg>-mongourl</arg><arg>${mongoURL}</arg>
+            <arg>-mongodb</arg><arg>${mongoDb}</arg>
+            <arg>-f</arg><arg>ODF</arg>
+            <arg>-l</arg><arg>store</arg>
+            <arg>-i</arg><arg>cleaned</arg>
+        </java>
+        <ok to="ImportOAF"/>
+        <error to="Kill"/>
+    </action>
+
+    <action name="ImportOAF">
+        <java>
+            <job-tracker>${jobTracker}</job-tracker>
+            <name-node>${nameNode}</name-node>
+            <main-class>eu.dnetlib.dhp.migration.step1.MigrateMongoMdstoresApplication</main-class>
+            <arg>-p</arg><arg>${migrationPathStep1}/oaf_records</arg>
+            <arg>-n</arg><arg>${nameNode}</arg>
+            <arg>-u</arg><arg>${hdfsUser}</arg>
+            <arg>-mongourl</arg><arg>${mongoURL}</arg>
+            <arg>-mongodb</arg><arg>${mongoDb}</arg>
+            <arg>-f</arg><arg>OAF</arg>
+            <arg>-l</arg><arg>store</arg>
+            <arg>-i</arg><arg>cleaned</arg>
+        </java>
+        <ok to="End"/>
+        <error to="Kill"/>
+    </action>
+    	
+    <end name="End"/>
+</workflow-app>

dhp-workflows/dhp-aggregation/src/main/resources/eu/dnetlib/dhp/migration/wfs/regular_step2/oozie_app/config-default.xml

@@ -0,0 +1,22 @@
+<configuration>
+    <property>
+        <name>jobTracker</name>
+        <value>yarnRM</value>
+    </property>
+    <property>
+        <name>nameNode</name>
+        <value>hdfs://nameservice1</value>
+    </property>
+    <property>
+        <name>oozie.use.system.libpath</name>
+        <value>true</value>
+    </property>
+    <property>
+        <name>oozie.action.sharelib.for.spark</name>
+        <value>spark2</value>
+    </property>
+    <property>
+        <name>hdfsUser</name>
+        <value>dnet</value>
+    </property>
+</configuration>

dhp-workflows/dhp-aggregation/src/main/resources/eu/dnetlib/dhp/migration/wfs/regular_step2/oozie_app/workflow.xml

@@ -0,0 +1,74 @@
+<workflow-app name="import regular entities as Graph (step 2)" xmlns="uri:oozie:workflow:0.5">
+    <parameters>
+        <property>
+            <name>migrationPathStep1</name>
+            <description>the base path to store hdfs file</description>
+        </property>
+        <property>
+            <name>migrationPathStep2</name>
+            <description>the temporary path to store entities before dispatching</description>
+        </property>
+        <property>
+            <name>postgresURL</name>
+            <description>the postgres URL to access to the database</description>
+        </property>
+        <property>
+            <name>postgresUser</name>
+            <description>the user postgres</description>
+        </property>
+        <property>
+            <name>postgresPassword</name>
+            <description>the password postgres</description>
+        </property>
+        <property>
+            <name>sparkDriverMemory</name>
+            <description>memory for driver process</description>
+        </property>
+        <property>
+            <name>sparkExecutorMemory</name>
+            <description>memory for individual executor</description>
+        </property>
+        <property>
+            <name>sparkExecutorCores</name>
+            <description>number of cores used by single executor</description>
+        </property>
+    </parameters>
+
+	<start to="ResetEntities"/>
+
+    <kill name="Kill">
+        <message>Action failed, error message[${wf:errorMessage(wf:lastErrorNode())}]</message>
+    </kill>
+    
+	<action name="ResetEntities">
+        <fs>
+            <delete path='${migrationPathStep2}'/>
+            <mkdir path='${migrationPathStep2}'/>
+        </fs>
+        <ok to="GenerateEntities"/>
+        <error to="Kill"/>
+    </action>
+
+    <action name="GenerateEntities">
+        <spark xmlns="uri:oozie:spark-action:0.2">
+            <job-tracker>${jobTracker}</job-tracker>
+            <name-node>${nameNode}</name-node>
+            <master>yarn-cluster</master>
+            <mode>cluster</mode>
+            <name>GenerateEntities</name>
+            <class>eu.dnetlib.dhp.migration.step2.GenerateEntitiesApplication</class>
+            <jar>dhp-aggregation-${projectVersion}.jar</jar>
+            <spark-opts>--executor-memory ${sparkExecutorMemory} --executor-cores ${sparkExecutorCores} --driver-memory=${sparkDriverMemory} --conf spark.extraListeners="com.cloudera.spark.lineage.NavigatorAppListener" --conf spark.sql.queryExecutionListeners="com.cloudera.spark.lineage.NavigatorQueryListener" --conf spark.sql.warehouse.dir="/user/hive/warehouse"</spark-opts>
+            <arg>-mt</arg> <arg>yarn-cluster</arg>
+            <arg>-s</arg><arg>${migrationPathStep1}/db_records,${migrationPathStep1}/oaf_records,${migrationPathStep1}/odf_records</arg>
+            <arg>-t</arg><arg>${migrationPathStep2}/all_entities</arg>
+            <arg>-pgurl</arg><arg>${postgresURL}</arg>
+            <arg>-pguser</arg><arg>${postgresUser}</arg>
+            <arg>-pgpasswd</arg><arg>${postgresPassword}</arg>
+        </spark>
+        <ok to="End"/>
+        <error to="Kill"/>
+    </action>
+
+    <end name="End"/>
+</workflow-app>

dhp-workflows/dhp-aggregation/src/main/resources/eu/dnetlib/dhp/migration/wfs/regular_step3/oozie_app/config-default.xml

@@ -0,0 +1,22 @@
+<configuration>
+    <property>
+        <name>jobTracker</name>
+        <value>yarnRM</value>
+    </property>
+    <property>
+        <name>nameNode</name>
+        <value>hdfs://nameservice1</value>
+    </property>
+    <property>
+        <name>oozie.use.system.libpath</name>
+        <value>true</value>
+    </property>
+    <property>
+        <name>oozie.action.sharelib.for.spark</name>
+        <value>spark2</value>
+    </property>
+    <property>
+        <name>hdfsUser</name>
+        <value>dnet</value>
+    </property>
+</configuration>

dhp-workflows/dhp-aggregation/src/main/resources/eu/dnetlib/dhp/migration/wfs/regular_step3/oozie_app/workflow.xml

@@ -0,0 +1,60 @@
+<workflow-app name="import regular entities as Graph (step 3)" xmlns="uri:oozie:workflow:0.5">
+    <parameters>
+        
+        <property>
+            <name>migrationPathStep2</name>
+            <description>the temporary path to store entities before dispatching</description>
+        </property>
+        <property>
+            <name>migrationPathStep3</name>
+            <description>the graph Raw base path</description>
+        </property>
+        <property>
+            <name>sparkDriverMemory</name>
+            <description>memory for driver process</description>
+        </property>
+        <property>
+            <name>sparkExecutorMemory</name>
+            <description>memory for individual executor</description>
+        </property>
+        <property>
+            <name>sparkExecutorCores</name>
+            <description>number of cores used by single executor</description>
+        </property>
+    </parameters>
+
+	<start to="ResetGraph"/>
+
+    <kill name="Kill">
+        <message>Action failed, error message[${wf:errorMessage(wf:lastErrorNode())}]</message>
+    </kill>
+
+    <action name="ResetGraph">
+        <fs>
+            <delete path='${migrationPathStep3}'/>
+            <mkdir path='${migrationPathStep3}'/>
+        </fs>
+        <ok to="GenerateGraph"/>
+        <error to="Kill"/>
+    </action>
+
+    <action name="GenerateGraph">
+        <spark xmlns="uri:oozie:spark-action:0.2">
+            <job-tracker>${jobTracker}</job-tracker>
+            <name-node>${nameNode}</name-node>
+            <master>yarn-cluster</master>
+            <mode>cluster</mode>
+            <name>GenerateGraph</name>
+            <class>eu.dnetlib.dhp.migration.step3.DispatchEntitiesApplication</class>
+            <jar>dhp-aggregation-${projectVersion}.jar</jar>
+            <spark-opts>--executor-memory ${sparkExecutorMemory} --executor-cores ${sparkExecutorCores} --driver-memory=${sparkDriverMemory} --conf spark.extraListeners="com.cloudera.spark.lineage.NavigatorAppListener" --conf spark.sql.queryExecutionListeners="com.cloudera.spark.lineage.NavigatorQueryListener" --conf spark.sql.warehouse.dir="/user/hive/warehouse"</spark-opts>
+            <arg>-mt</arg> <arg>yarn-cluster</arg>
+            <arg>-s</arg><arg>${migrationPathStep2}/all_entities</arg>
+            <arg>-g</arg><arg>${migrationPathStep3}</arg>
+        </spark>
+        <ok to="End"/>
+        <error to="Kill"/>
+    </action>  
+
+    <end name="End"/>
+</workflow-app>