avro compiler plugin should throw an error instead of warning when an unsupported data type is encountered

[rxin]

I defined the following class in Messages.scala. Note that Class[_] is not
supported:

case class MapRequest(
    var minKey: Option[Array[Byte]],
    var maxKey: Option[Array[Byte]],
    var mapper: Class[_])
extends AvroRecord with KeyValueStoreOperation

Instead of throwing an error, the compiler plugin printed just an info message,
causing many other compilation errors later on.

[INFO] java.lang.reflect.InvocationTargetException
[INFO]  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[INFO]  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
[INFO]  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
[INFO]  at java.lang.reflect.Method.invoke(Method.java:597)
[INFO]  at org_scala_tools_maven_executions.MainHelper.runMain(MainHelper.java:161)
[INFO]  at org_scala_tools_maven_executions.MainWithArgsInFile.main(MainWithArgsInFile.java:26)
[INFO] Caused by: java.lang.UnsupportedOperationException: Cannot support yet: Class[_]
[INFO]  at edu.berkeley.cs.avro.plugin.SchemaGen$SchemaGenTransformer.edu$berkeley$cs$avro$plugin$SchemaGen$SchemaGenTransformer$$createSchema(SchemaGen.scala:115)
[INFO]  at edu.berkeley.cs.avro.plugin.SchemaGen$SchemaGenTransformer$$anonfun$4.apply(SchemaGen.scala:135)
[INFO]  at edu.berkeley.cs.avro.plugin.SchemaGen$SchemaGenTransformer$$anonfun$4.apply(SchemaGen.scala:133)
[INFO]  at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:206)
[INFO]  at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:206)
[INFO]  at scala.collection.LinearSeqOptimized$class.foreach(LinearSeqOptimized.scala:61)
[INFO]  at scala.collection.immutable.List.foreach(List.scala:45)
[INFO]  at scala.collection.TraversableLike$class.map(TraversableLike.scala:206)
[INFO]  at scala.collection.immutable.List.map(List.scala:45)
[INFO]  at edu.berkeley.cs.avro.plugin.SchemaGen$SchemaGenTransformer.transform(SchemaGen.scala:133)
[INFO]  at scala.tools.nsc.ast.Trees$Transformer$$anonfun$transformStats$1.apply(Trees.scala:856)
[INFO]  at scala.tools.nsc.ast.Trees$Transformer$$anonfun$transformStats$1.apply(Trees.scala:854)
[INFO]  at scala.collection.immutable.List.loop$1(List.scala:115)
[INFO]  at scala.collection.immutable.List.mapConserve(List.scala:132)
[INFO]  at scala.tools.nsc.ast.Trees$Transformer.transformStats(Trees.scala:854)
[INFO]  at scala.tools.nsc.ast.Trees$Transformer$$anonfun$transform$1.apply(Trees.scala:728)
[INFO]  at scala.tools.nsc.ast.Trees$Transformer$$anonfun$transform$1.apply(Trees.scala:728)
[INFO]  at scala.tools.nsc.ast.Trees$Transformer.atOwner(Trees.scala:864)
[INFO]  at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.atOwner(TypingTransformers.scala:38)
[INFO]  at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.atOwner(TypingTransformers.scala:31)
[INFO]  at scala.tools.nsc.ast.Trees$Transformer.transform(Trees.scala:727)
[INFO]  at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.scala$tools$nsc$transform$TypingTransformers$TypingTransformer$$super$transform(TypingTransformers.scala:49)
[INFO]  at scala.tools.nsc.transform.TypingTransformers$TypingTransformer$$anonfun$transform$2.apply(TypingTransformers.scala:51)
[INFO]  at scala.tools.nsc.transform.TypingTransformers$TypingTransformer$$anonfun$transform$2.apply(TypingTransformers.scala:51)
[INFO]  at scala.tools.nsc.ast.Trees$Transformer.atOwner(Trees.scala:864)
[INFO]  at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.atOwner(TypingTransformers.scala:38)
[INFO]  at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.atOwner(TypingTransformers.scala:31)
[INFO]  at scala.tools.nsc.transform.TypingTransformers$TypingTransformer.transform(TypingTransformers.scala:51)
[INFO]  at edu.berkeley.cs.avro.plugin.SchemaGen$SchemaGenTransformer.transform(SchemaGen.scala:157)
[INFO]  at scala.tools.nsc.ast.Trees$Transformer.transformUnit(Trees.scala:857)
[INFO]  at scala.tools.nsc.transform.Transform$Phase.apply(Transform.scala:30)
[INFO]  at scala.tools.nsc.Global$GlobalPhase$$anonfun$applyPhase$1.apply(Global.scala:276)
[INFO]  at scala.tools.nsc.Global$GlobalPhase$$anonfun$applyPhase$1.apply(Global.scala:276)
[INFO]  at scala.tools.nsc.reporters.Reporter.withSource(Reporter.scala:48)
[INFO]  at scala.tools.nsc.Global$GlobalPhase.applyPhase(Global.scala:276)
[INFO]  at scala.tools.nsc.Global$GlobalPhase$$anonfun$run$1.apply(Global.scala:252)
[INFO]  at scala.tools.nsc.Global$GlobalPhase$$anonfun$run$1.apply(Global.scala:252)
[INFO]  at scala.collection.Iterator$class.foreach(Iterator.scala:631)
[INFO]  at scala.collection.mutable.ListBuffer$$anon$1.foreach(ListBuffer.scala:304)
[INFO]  at scala.tools.nsc.Global$GlobalPhase.run(Global.scala:252)
[INFO]  at scala.tools.nsc.Global$Run.compileSources(Global.scala:733)
[INFO]  at scala.tools.nsc.Global$Run.compile(Global.scala:813)
[INFO]  at scala.tools.nsc.Main$.process(Main.scala:108)
[INFO]  at scala.tools.nsc.Main$.main(Main.scala:122)
[INFO]  at scala.tools.nsc.Main.main(Main.scala)
[INFO]  ... 6 more
[INFO] prepare-compile in 0 s
[INFO] compile in 11 s

[rxin]

Did guthub just lose your comment, Stephen? I don't see it anymore.