From 8727022e03b1b1c2eae33d42ca48fc8daf3386db Mon Sep 17 00:00:00 2001
From: PJ Fanning <pfanning@descartes.com>
Date: Sun, 12 Jul 2020 18:20:03 +0200
Subject: [PATCH] try to get ScalaAnnotationIntrospector to ignore non-Scala
 classes

---
 .../ScalaAnnotationIntrospectorModule.scala          | 12 ++++++------
 .../jackson/module/scala/util/Classes.scala          |  1 +
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/src/main/scala/com/fasterxml/jackson/module/scala/introspect/ScalaAnnotationIntrospectorModule.scala b/src/main/scala/com/fasterxml/jackson/module/scala/introspect/ScalaAnnotationIntrospectorModule.scala
index aa66658a1..6d9e0cbfe 100644
--- a/src/main/scala/com/fasterxml/jackson/module/scala/introspect/ScalaAnnotationIntrospectorModule.scala
+++ b/src/main/scala/com/fasterxml/jackson/module/scala/introspect/ScalaAnnotationIntrospectorModule.scala
@@ -3,23 +3,21 @@ package com.fasterxml.jackson.module.scala.introspect
 import java.lang.annotation.Annotation
 
 import com.fasterxml.jackson.annotation.JsonCreator
-import com.fasterxml.jackson.databind.{BeanDescription, DeserializationConfig, DeserializationContext}
 import com.fasterxml.jackson.databind.`type`.ClassKey
-import com.fasterxml.jackson.databind.deser.{CreatorProperty, NullValueProvider, SettableBeanProperty, ValueInstantiator, ValueInstantiators}
 import com.fasterxml.jackson.databind.deser.std.StdValueInstantiator
+import com.fasterxml.jackson.databind.deser._
 import com.fasterxml.jackson.databind.introspect._
 import com.fasterxml.jackson.databind.util.{AccessPattern, LRUMap}
+import com.fasterxml.jackson.databind.{BeanDescription, DeserializationConfig, DeserializationContext}
 import com.fasterxml.jackson.module.scala.JacksonModule
 import com.fasterxml.jackson.module.scala.util.Implicits._
 
 object ScalaAnnotationIntrospector extends NopAnnotationIntrospector with ValueInstantiators {
   private [this] val _descriptorCache = new LRUMap[ClassKey, BeanDescriptor](16, 100)
+  private val productClass = classOf[Product]
 
   private def _descriptorFor(clz: Class[_]): Option[BeanDescriptor] = {
-    if (clz.getName.startsWith("io.swagger.models")) {
-      //ignore swagger model java classes -- https://github.com/FasterXML/jackson-module-scala/issues/454
-      None
-    } else {
+    if (clz.hasSignature || productClass.isAssignableFrom(clz)) {
       val key = new ClassKey(clz)
       Option(_descriptorCache.get(key)) match {
         case Some(result) => Some(result)
@@ -29,6 +27,8 @@ object ScalaAnnotationIntrospector extends NopAnnotationIntrospector with ValueI
           Some(introspector)
         }
       }
+    } else {
+      None
     }
   }
 
diff --git a/src/main/scala/com/fasterxml/jackson/module/scala/util/Classes.scala b/src/main/scala/com/fasterxml/jackson/module/scala/util/Classes.scala
index b83ec1dad..72295f512 100644
--- a/src/main/scala/com/fasterxml/jackson/module/scala/util/Classes.scala
+++ b/src/main/scala/com/fasterxml/jackson/module/scala/util/Classes.scala
@@ -4,6 +4,7 @@ import scala.language.implicitConversions
 import scala.reflect.{ScalaLongSignature, ScalaSignature}
 
 trait ClassW extends PimpedType[Class[_]] {
+
   def hasSignature: Boolean = {
     def hasSigHelper(clazz: Class[_]): Boolean = {
       if (clazz == null) false