diff --git a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/sx/graph/SparkSplitOafTODLIEntities.scala b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/sx/graph/SparkSplitOafTODLIEntities.scala
new file mode 100644
index 000000000..be1e43963
--- /dev/null
+++ b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/sx/graph/SparkSplitOafTODLIEntities.scala
@@ -0,0 +1,5 @@
+package eu.dnetlib.dhp.sx.graph
+
+object SparkSplitOafTODLIEntities {
+
+}
diff --git a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/sx/graph/SparkXMLToOAFDataset.scala b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/sx/graph/SparkXMLToOAFDataset.scala
new file mode 100644
index 000000000..848b23253
--- /dev/null
+++ b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/sx/graph/SparkXMLToOAFDataset.scala
@@ -0,0 +1,5 @@
+package eu.dnetlib.dhp.sx.graph
+
+object SparkXMLToOAFDataset {
+
+}