Ignore Records' immutable fields in BeanDeserializerFactory instead o…

…f ignoring it in POJOPropertiesCollector, to preserve any annotation info the fields may be carrying.
FasterXML · Jul 21, 2024 · ea3135a · ea3135a
1 parent 62e2893
commit ea3135a
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Showing 3 changed files with 16 additions and 13 deletions.
diff --git a/src/main/java/com/fasterxml/jackson/databind/deser/BeanDeserializerFactory.java b/src/main/java/com/fasterxml/jackson/databind/deser/BeanDeserializerFactory.java
@@ -977,8 +977,12 @@ protected SettableBeanProperty constructSettableProperty(DeserializationContext
                     beanDesc.getClassAnnotations(), (AnnotatedMethod) mutator);
         } else {
             // 08-Sep-2016, tatu: wonder if we should verify it is `AnnotatedField` to be safe?
-            prop = new FieldProperty(propDef, type, typeDeser,
-                    beanDesc.getClassAnnotations(), (AnnotatedField) mutator);
+            AnnotatedField field = (AnnotatedField) mutator;
+            if (field.isImmutable()) {
+                // [databind#3736] Pointless to create a SettableBeanProperty for an immutable field
+                return null;
+            }
+            prop = new FieldProperty(propDef, type, typeDeser, beanDesc.getClassAnnotations(), field);
         }
         JsonDeserializer<?> deser = findDeserializerFromAnnotation(ctxt, mutator);
         if (deser == null) {

diff --git a/src/main/java/com/fasterxml/jackson/databind/introspect/AnnotatedField.java b/src/main/java/com/fasterxml/jackson/databind/introspect/AnnotatedField.java
@@ -128,6 +128,14 @@ public Object getValue(Object pojo) throws IllegalArgumentException
      */
     public boolean isTransient() { return Modifier.isTransient(getModifiers()); }
 
+    /**
+     * @since 2.18
+     */
+    public boolean isImmutable() {
+        // Records' fields can't mutated via reflection (JDK-8247517)
+        return _typeContext.resolveType(getDeclaringClass()).isRecordType();
+    }
+
     @Override
     public int hashCode() {
         return Objects.hashCode(_field);

diff --git a/src/main/java/com/fasterxml/jackson/databind/introspect/POJOPropertiesCollector.java b/src/main/java/com/fasterxml/jackson/databind/introspect/POJOPropertiesCollector.java
@@ -434,13 +434,7 @@ protected void collectAll()
         // First: gather basic accessors
         LinkedHashMap<String, POJOPropertyBuilder> props = new LinkedHashMap<String, POJOPropertyBuilder>();
 
-        // 15-Jan-2023, tatu: [databind#3736] Let's avoid detecting fields of Records
-        //   altogether (unless we find a good reason to detect them)
-        // 17-Apr-2023: Need Records' fields for serialization for cases
-        //   like [databind#3628], [databind#3895] and [databind#3992]
-        if (!isRecordType() || _forSerialization) {
-            _addFields(props); // note: populates _fieldRenameMappings
-        }
+        _addFields(props); // note: populates _fieldRenameMappings
         _addMethods(props);
         // 25-Jan-2016, tatu: Avoid introspecting (constructor-)creators for non-static
         //    inner classes, see [databind#1502]
@@ -1301,10 +1295,7 @@ protected void _removeUnwantedProperties(Map<String, POJOPropertyBuilder> props)
      */
     protected void _removeUnwantedAccessor(Map<String, POJOPropertyBuilder> props)
     {
-        // 15-Jan-2023, tatu: Avoid pulling in mutators for Records; Fields mostly
-        //    since there should not be setters.
-        final boolean inferMutators = !isRecordType()
-                && _config.isEnabled(MapperFeature.INFER_PROPERTY_MUTATORS);
+        final boolean inferMutators = _config.isEnabled(MapperFeature.INFER_PROPERTY_MUTATORS);
         Iterator<POJOPropertyBuilder> it = props.values().iterator();
 
         while (it.hasNext()) {