better exceptions

Author: dszakallas

src/main/scala/ldbc/snb/datagen/transformation/transform/ConvertDates.scala

@@ -28,7 +28,7 @@ object ConvertDates {
     implicit def batchedConvertDates[M <: Mode](implicit ev: BatchedEntity =:= M#Layout) = new ConvertDates[M] {
       override def transform(input: In): Out = {
         if (input.definition.useTimestamp) {
-          throw new IllegalArgumentException("Already using timestamp for dates")
+          throw new AssertionError("Already using timestamp for dates")
         }
         val modifiedEntities = input.entities.map { case (tpe, layout) => tpe -> {
           val be = layout.asInstanceOf[BatchedEntity]
@@ -50,7 +50,7 @@ object ConvertDates {
     implicit def simpleConvertDates[M <: Mode](implicit ev: DataFrame =:= M#Layout) = new ConvertDates[M] {
       override def transform(input: In): Out = {
         if (input.definition.useTimestamp) {
-          throw new IllegalArgumentException("Already using timestamp for dates")
+          throw new AssertionError("Already using timestamp for dates")
         }
 
         val modifiedEntities = input.entities

src/main/scala/ldbc/snb/datagen/transformation/transform/ExplodeAttrs.scala

@@ -11,7 +11,7 @@ import shapeless.lens
 object ExplodeAttrs extends Transform[Mode.Raw.type, Mode.Raw.type] {
   override def transform(input: In): Out = {
     if (input.definition.isAttrExploded) {
-      throw new IllegalArgumentException("Attributes already exploded in the input graph")
+      throw new AssertionError("Attributes already exploded in the input graph")
     }
 
     def explodedAttr(attr: Attr, node: DataFrame, column: Column) =

src/main/scala/ldbc/snb/datagen/transformation/transform/ExplodeEdges.scala

@@ -13,7 +13,7 @@ import shapeless.lens
 object ExplodeEdges extends Transform[Mode.Raw.type, Mode.Raw.type] {
   override def transform(input: In): Out = {
     if (input.definition.isEdgesExploded) {
-          throw new IllegalArgumentException("Edges already exploded in the input graph")
+          throw new AssertionError("Edges already exploded in the input graph")
         }
     val entities = input.entities
 

src/main/scala/ldbc/snb/datagen/transformation/transform/RawToBiTransform.scala

@@ -23,7 +23,7 @@ case class RawToBiTransform(mode: BI, simulationStart: Long, simulationEnd: Long
     case "day"    => "yyyy-MM-dd"
     case "hour"   => "yyyy-MM-dd'T'hh"
     case "minute" => "yyyy-MM-dd'T'hh:mm"
-    case _        => throw new IllegalStateException("Unrecognized partition key")
+    case _        => throw new IllegalArgumentException("Unrecognized partition key")
   }
 
   private def notDerived(entityType: EntityType): Boolean = entityType match {