diff --git a/dhp-workflows/dhp-doiboost/src/main/java/eu/dnetlib/doiboost/DoiBoostMappingUtil.scala b/dhp-workflows/dhp-doiboost/src/main/java/eu/dnetlib/doiboost/DoiBoostMappingUtil.scala
index 1a45defb0..9c9221b27 100644
--- a/dhp-workflows/dhp-doiboost/src/main/java/eu/dnetlib/doiboost/DoiBoostMappingUtil.scala
+++ b/dhp-workflows/dhp-doiboost/src/main/java/eu/dnetlib/doiboost/DoiBoostMappingUtil.scala
@@ -341,13 +341,7 @@ object DoiBoostMappingUtil {
 
   def generateIdentifier (oaf: Result, doi: String): String = {
     val id = DHPUtils.md5 (doi.toLowerCase)
-    return s"50|${
-      doiBoostNSPREFIX
-    }${
-      SEPARATOR
-    }${
-      id
-    }"
+    s"50|${doiBoostNSPREFIX}${SEPARATOR}${id}"
   }
 
 
diff --git a/dhp-workflows/dhp-doiboost/src/main/java/eu/dnetlib/doiboost/crossref/Crossref2Oaf.scala b/dhp-workflows/dhp-doiboost/src/main/java/eu/dnetlib/doiboost/crossref/Crossref2Oaf.scala
index f39dd5be8..b38e103bc 100644
--- a/dhp-workflows/dhp-doiboost/src/main/java/eu/dnetlib/doiboost/crossref/Crossref2Oaf.scala
+++ b/dhp-workflows/dhp-doiboost/src/main/java/eu/dnetlib/doiboost/crossref/Crossref2Oaf.scala
@@ -93,7 +93,7 @@ case object Crossref2Oaf {
 
     result.setOriginalId(tmp.filter(id => id != null).asJava)
 
-    //Set identifier as {50|60} | doiboost____::md5(DOI)
+    //Set identifier as 50 | doiboost____::md5(DOI)
     result.setId(generateIdentifier(result, doi))
 
     // Add DataInfo
@@ -267,7 +267,7 @@ case object Crossref2Oaf {
 
       val r = new Relation
       r.setSource(sourceId)
-      r.setTarget(s"$nsPrefix::$targetId")
+      r.setTarget(s"40|$nsPrefix::$targetId")
       r.setRelType("resultProject")
       r.setRelClass("isProducedBy")
       r.setSubRelType("outcome")
diff --git a/dhp-workflows/dhp-doiboost/src/test/java/eu/dnetlib/dhp/doiboost/QueryTest.scala b/dhp-workflows/dhp-doiboost/src/test/java/eu/dnetlib/dhp/doiboost/QueryTest.scala
new file mode 100644
index 000000000..c393f0ae9
--- /dev/null
+++ b/dhp-workflows/dhp-doiboost/src/test/java/eu/dnetlib/dhp/doiboost/QueryTest.scala
@@ -0,0 +1,54 @@
+package eu.dnetlib.dhp.doiboost
+import eu.dnetlib.dhp.schema.oaf.{Publication, Relation, StructuredProperty, Dataset => OafDataset}
+import org.apache.spark.sql.functions.{col, sum}
+import org.apache.spark.sql.{Dataset, Encoder, Encoders, SparkSession}
+
+import scala.::
+import scala.collection.JavaConverters._
+class QueryTest {
+
+
+  def extractLicense(p:Publication):Tuple2[String,String] = {
+
+      val tmp = p.getInstance().asScala.map(i => i.getLicense.getValue).distinct.mkString(",")
+      (p.getId,tmp)
+    }
+
+
+
+  def hasDOI(publication: Publication, doi:String):Boolean = {
+
+
+    val s = publication.getOriginalId.asScala.filter(i =>  i.equalsIgnoreCase(doi))
+
+    s.nonEmpty
+
+  }
+
+  def hasNullHostedBy(publication: Publication):Boolean = {
+    publication.getInstance().asScala.exists(i => i.getHostedby == null || i.getHostedby.getValue == null)
+  }
+
+
+
+  def myQuery(spark:SparkSession): Unit = {
+    implicit val mapEncoderPub: Encoder[Publication] = Encoders.kryo[Publication]
+    implicit val mapEncoderDat: Encoder[OafDataset] = Encoders.kryo[OafDataset]
+    implicit val mapEncoderRel: Encoder[Relation] = Encoders.kryo[Relation]
+
+    val doiboostPubs:Dataset[Publication]    = spark.read.load("/data/doiboost/process/doiBoostPublicationFiltered").as[Publication]
+
+    val relFunder: Dataset[Relation] = spark.read.format("org.apache.spark.sql.parquet").load("/data/doiboost/process/crossrefRelation").as[Relation]
+
+    doiboostPubs.filter(p => p.getDateofacceptance != null && p.getDateofacceptance.getValue!= null && p.getDateofacceptance.getValue.length > 0 )
+
+    doiboostPubs.filter(p=>hasDOI(p, "10.1016/j.is.2020.101522")).collect()(0).getDescription.get(0).getValue
+
+
+
+    doiboostPubs.filter(p=> hasNullHostedBy(p)).count()
+
+    doiboostPubs.map(p=> (p.getId, p.getBestaccessright.getClassname))(Encoders.tuple(Encoders.STRING,Encoders.STRING))
+  }
+
+}