Merge pull request #654 from k163377/temp-fix-#572

Change MKPE.parameter property to transient.

Author: k163377

pom.xml

@@ -223,6 +223,7 @@
 			    -->
                           <exclude>com.fasterxml.jackson.module.kotlin.ReflectionCache</exclude>
                           <exclude>com.fasterxml.jackson.module.kotlin.TypesKt</exclude>
+                          <exclude>com.fasterxml.jackson.module.kotlin.MissingKotlinParameterException</exclude>
                         </excludes>
                     </parameter>
                 </configuration>

src/main/kotlin/com/fasterxml/jackson/module/kotlin/Exceptions.kt

@@ -18,7 +18,9 @@ import kotlin.reflect.KParameter
     ),
     DeprecationLevel.WARNING
 )
-class MissingKotlinParameterException(val parameter: KParameter,
+// When deserialized by the JDK, the parameter property will be null, ignoring nullability.
+// This is a temporary workaround for #572 and we will eventually remove this class.
+class MissingKotlinParameterException(@Transient val parameter: KParameter,
                                       processor: JsonParser? = null,
                                       msg: String) : MismatchedInputException(processor, msg) {
     @Deprecated("Use main constructor", ReplaceWith("MissingKotlinParameterException(KParameter, JsonParser?, String)"))

src/test/kotlin/com/fasterxml/jackson/module/kotlin/MissingKotlinParameterExceptionTest.kt

@@ -0,0 +1,20 @@
+package com.fasterxml.jackson.module.kotlin
+
+import org.junit.Test
+import kotlin.test.assertNotNull
+import kotlin.test.assertNull
+
+class MissingKotlinParameterExceptionTest {
+    @Test
+    fun jdkSerializabilityTest() {
+        val param = ::MissingKotlinParameterException.parameters.first()
+        val ex = MissingKotlinParameterException(param, null, "test")
+
+        val serialized = jdkSerialize(ex)
+        val deserialized = jdkDeserialize<MissingKotlinParameterException>(serialized)
+
+        assertNotNull(deserialized)
+        // see comment at MissingKotlinParameterException
+        assertNull(deserialized.parameter)
+    }
+}