FasterXML · k163377 · Jul 8, 2023 · Jul 8, 2023 · Jul 8, 2023 · Jul 8, 2023
diff --git a/release-notes/CREDITS-2.x b/release-notes/CREDITS-2.x
@@ -15,6 +15,11 @@ Authors:
 
 Contributors:
 
+# 2.16.0 (not yet released)
+
+WrongWrong (@k163377)
+* #682: Remove MissingKotlinParameterException and replace with MismatchedInputException
+
 # 2.15.2
 
 WrongWrong (@k163377)

diff --git a/release-notes/VERSION-2.x b/release-notes/VERSION-2.x
@@ -16,7 +16,11 @@ Co-maintainers:
 === Releases ===
 ------------------------------------------------------------------------
 
-2.16.0 (not yet relesed)
+2.16.0 (not yet released)
+
+#682: Remove MissingKotlinParameterException and replace with MismatchedInputException
+ This change removes MissingKotlinParameterException and resolves #617.
+ This change is a prerequisite for future work to improve performance.
 
 2.15.2 (30-May-2023)
 

diff --git a/src/main/kotlin/com/fasterxml/jackson/module/kotlin/Exceptions.kt b/src/main/kotlin/com/fasterxml/jackson/module/kotlin/Exceptions.kt
diff --git a/src/main/kotlin/com/fasterxml/jackson/module/kotlin/KotlinValueInstantiator.kt b/src/main/kotlin/com/fasterxml/jackson/module/kotlin/KotlinValueInstantiator.kt
@@ -9,6 +9,7 @@ import com.fasterxml.jackson.databind.deser.ValueInstantiators
 import com.fasterxml.jackson.databind.deser.impl.NullsAsEmptyProvider
 import com.fasterxml.jackson.databind.deser.impl.PropertyValueBuffer
 import com.fasterxml.jackson.databind.deser.std.StdValueInstantiator
+import com.fasterxml.jackson.databind.exc.MismatchedInputException
 import java.lang.reflect.TypeVariable
 import kotlin.reflect.KParameter
 import kotlin.reflect.KType
@@ -81,10 +82,12 @@ internal class KotlinValueInstantiator(
             val isMissingAndRequired = paramVal == null && isMissing && jsonProp.isRequired
             if (isMissingAndRequired ||
                 (!isGenericTypeVar && paramVal == null && !paramDef.type.isMarkedNullable)) {
-                throw MissingKotlinParameterException(
-                    parameter = paramDef,
-                    processor = ctxt.parser,
-                    msg = "Instantiation of ${this.valueTypeDesc} value failed for JSON property ${jsonProp.name} due to missing (therefore NULL) value for creator parameter ${paramDef.name} which is a non-nullable type"
+                throw MismatchedInputException.from(
+                    ctxt.parser,
+                    jsonProp.type,
+                    "Instantiation of $valueTypeDesc value failed for JSON property ${jsonProp.name} " +
+                            "due to missing (therefore NULL) value for creator parameter ${paramDef.name} " +
+                            "which is a non-nullable type"
                 ).wrapWithPath(this.valueClass, jsonProp.name)
             }
 
@@ -107,10 +110,10 @@ internal class KotlinValueInstantiator(
                 }
 
                 if (paramType != null && itemType != null) {
-                    throw MissingKotlinParameterException(
-                        parameter = paramDef,
-                        processor = ctxt.parser,
-                        msg = "Instantiation of $itemType $paramType failed for JSON property ${jsonProp.name} due to null value in a $paramType that does not allow null values"
+                    throw MismatchedInputException.from(
+                        ctxt.parser,
+                        jsonProp.type,
+                        "Instantiation of $itemType $paramType failed for JSON property ${jsonProp.name} due to null value in a $paramType that does not allow null values"
                     ).wrapWithPath(this.valueClass, jsonProp.name)
                 }
             }

diff --git a/src/test/kotlin/com/fasterxml/jackson/module/kotlin/MissingKotlinParameterExceptionTest.kt b/src/test/kotlin/com/fasterxml/jackson/module/kotlin/MissingKotlinParameterExceptionTest.kt
diff --git a/src/test/kotlin/com/fasterxml/jackson/module/kotlin/test/NullToDefaultTests.kt b/src/test/kotlin/com/fasterxml/jackson/module/kotlin/test/NullToDefaultTests.kt
@@ -1,8 +1,8 @@
 package com.fasterxml.jackson.module.kotlin.test
 
 import com.fasterxml.jackson.databind.ObjectMapper
+import com.fasterxml.jackson.databind.exc.MismatchedInputException
 import com.fasterxml.jackson.module.kotlin.KotlinFeature.NullIsSameAsDefault
-import com.fasterxml.jackson.module.kotlin.MissingKotlinParameterException
 import com.fasterxml.jackson.module.kotlin.kotlinModule
 import com.fasterxml.jackson.module.kotlin.readValue
 import org.junit.Assert
@@ -139,7 +139,7 @@ class TestNullToDefault {
         Assert.assertEquals(true, item.canBeProcessed)
     }
 
-    @Test(expected = MissingKotlinParameterException::class)
+    @Test(expected = MismatchedInputException::class)
     fun shouldThrowExceptionWhenProvidedNullForNotNullFieldWithoutDefault() {
         createMapper(true).readValue<TestClass>(
             """{

diff --git a/src/test/kotlin/com/fasterxml/jackson/module/kotlin/test/StrictNullChecksTest.kt b/src/test/kotlin/com/fasterxml/jackson/module/kotlin/test/StrictNullChecksTest.kt
@@ -1,8 +1,8 @@
 package com.fasterxml.jackson.module.kotlin.test
 
 import com.fasterxml.jackson.databind.ObjectMapper
+import com.fasterxml.jackson.databind.exc.MismatchedInputException
 import com.fasterxml.jackson.module.kotlin.KotlinFeature.StrictNullChecks
-import com.fasterxml.jackson.module.kotlin.MissingKotlinParameterException
 import com.fasterxml.jackson.module.kotlin.kotlinModule
 import com.fasterxml.jackson.module.kotlin.readValue
 import org.hamcrest.CoreMatchers.equalTo
@@ -27,7 +27,7 @@ class StrictNullChecksTest {
 
     private data class ClassWithListOfInt(val samples: List<Int>)
 
-    @Test(expected = MissingKotlinParameterException::class)
+    @Test(expected = MismatchedInputException::class)
     fun testListOfInt() {
         val json = """{"samples":[1, null]}"""
         mapper.readValue<ClassWithListOfInt>(json)
@@ -55,7 +55,7 @@ class StrictNullChecksTest {
 
     private data class ClassWithArrayOfInt(val samples: Array<Int>)
 
-    @Test(expected = MissingKotlinParameterException::class)
+    @Test(expected = MismatchedInputException::class)
     fun testArrayOfInt() {
         val json = """{"samples":[1, null]}"""
         mapper.readValue<ClassWithArrayOfInt>(json)
@@ -83,7 +83,7 @@ class StrictNullChecksTest {
 
     private data class ClassWithMapOfStringToInt(val samples: Map<String, Int>)
 
-    @Test(expected = MissingKotlinParameterException::class)
+    @Test(expected = MismatchedInputException::class)
     fun testMapOfStringToIntWithNullValue() {
         val json = """{ "samples": { "key": null } }"""
         mapper.readValue<ClassWithMapOfStringToInt>(json)
@@ -110,7 +110,7 @@ class StrictNullChecksTest {
     }
 
     @Ignore // this is a hard problem to solve and is currently not addressed
-    @Test(expected = MissingKotlinParameterException::class)
+    @Test(expected = MismatchedInputException::class)
     fun testListOfGenericWithNullValue() {
         val json = """{"samples":[1, null]}"""
         mapper.readValue<TestClass<List<Int>>>(json)
@@ -124,7 +124,7 @@ class StrictNullChecksTest {
     }
 
     @Ignore // this is a hard problem to solve and is currently not addressed
-    @Test(expected = MissingKotlinParameterException::class)
+    @Test(expected = MismatchedInputException::class)
     fun testMapOfGenericWithNullValue() {
         val json = """{ "samples": { "key": null } }"""
         mapper.readValue<TestClass<Map<String, Int>>>(json)
@@ -138,7 +138,7 @@ class StrictNullChecksTest {
     }
 
     @Ignore // this is a hard problem to solve and is currently not addressed
-    @Test(expected = MissingKotlinParameterException::class)
+    @Test(expected = MismatchedInputException::class)
     fun testArrayOfGenericWithNullValue() {
         val json = """{"samples":[1, null]}"""
         mapper.readValue<TestClass<Array<Int>>>(json)

diff --git a/src/test/kotlin/com/fasterxml/jackson/module/kotlin/test/github/Github168.kt b/src/test/kotlin/com/fasterxml/jackson/module/kotlin/test/github/Github168.kt
@@ -1,7 +1,7 @@
 package com.fasterxml.jackson.module.kotlin.test.github
 
 import com.fasterxml.jackson.annotation.JsonProperty
-import com.fasterxml.jackson.module.kotlin.MissingKotlinParameterException
+import com.fasterxml.jackson.databind.exc.MismatchedInputException
 import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
 import com.fasterxml.jackson.module.kotlin.readValue
 import org.junit.Test
@@ -17,7 +17,7 @@ class TestGithub168 {
         assertEquals("whatever", obj.baz)
     }
 
-    @Test(expected = MissingKotlinParameterException::class)
+    @Test(expected = MismatchedInputException::class)
     fun testIfRequiredIsReallyRequiredWhenAbsent() {
         val obj = jacksonObjectMapper().readValue<TestClass>("""{"baz":"whatever"}""")
         assertEquals("whatever", obj.baz)

diff --git a/src/test/kotlin/com/fasterxml/jackson/module/kotlin/test/github/Github32.kt b/src/test/kotlin/com/fasterxml/jackson/module/kotlin/test/github/Github32.kt
@@ -1,7 +1,7 @@
 package com.fasterxml.jackson.module.kotlin.test.github
 
 import com.fasterxml.jackson.databind.JsonMappingException
-import com.fasterxml.jackson.module.kotlin.MissingKotlinParameterException
+import com.fasterxml.jackson.databind.exc.MismatchedInputException
 import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
 import com.fasterxml.jackson.module.kotlin.readValue
 import org.hamcrest.CustomTypeSafeMatcher
@@ -106,16 +106,20 @@ private data class Crowd(val people: List<Person>)
 
 private fun missingFirstNameParameter() = missingConstructorParam(::Person.parameters[0])
 
-private fun missingConstructorParam(param: KParameter) = object : CustomTypeSafeMatcher<MissingKotlinParameterException>("MissingKotlinParameterException with missing `${param.name}` parameter") {
-    override fun matchesSafely(e: MissingKotlinParameterException): Boolean = e.parameter.equals(param)
+private fun missingConstructorParam(
+    param: KParameter
+) = object : CustomTypeSafeMatcher<MismatchedInputException>(
+    "MissingKotlinParameterException with missing `${param.name}` parameter"
+) {
+    override fun matchesSafely(e: MismatchedInputException): Boolean = param.name == e.path.last().fieldName
 }
 
-private fun pathMatches(path: String) = object : CustomTypeSafeMatcher<MissingKotlinParameterException>("MissingKotlinParameterException with path `$path`") {
-    override fun matchesSafely(e: MissingKotlinParameterException): Boolean = e.getHumanReadablePath().equals(path)
+private fun pathMatches(path: String) = object : CustomTypeSafeMatcher<MismatchedInputException>("MissingKotlinParameterException with path `$path`") {
+    override fun matchesSafely(e: MismatchedInputException): Boolean = e.getHumanReadablePath().equals(path)
 }
 
-private fun location(line: Int, column: Int) = object : CustomTypeSafeMatcher<MissingKotlinParameterException>("MissingKotlinParameterException with location (line=$line, column=$column)") {
-    override fun matchesSafely(e: MissingKotlinParameterException): Boolean {
+private fun location(line: Int, column: Int) = object : CustomTypeSafeMatcher<MismatchedInputException>("MissingKotlinParameterException with location (line=$line, column=$column)") {
+    override fun matchesSafely(e: MismatchedInputException): Boolean {
         return e.location != null && line.equals(e.location.lineNr) && column.equals(e.location.columnNr)
     }
 }
@@ -131,4 +135,4 @@ private fun JsonMappingException.getHumanReadablePath(): String {
         }
     }
     return builder.toString()
-}
+}