Fix #2051

Author: cowtowncoder

release-notes/VERSION-2.x

@@ -43,6 +43,8 @@ Project: jackson-databind
 #2038: JDK Serializing and using Deserialized `ObjectMapper` loses linkage
   back from `JsonParser.getCodec()`
  (reported by Chetan N)
+#2051: Implicit constructor property names are not renamed properly with
+  `PropertyNamingStrategy`
 
 2.9.5 (26-Mar-2018)
 

src/main/java/com/fasterxml/jackson/databind/deser/BasicDeserializerFactory.java

@@ -728,7 +728,11 @@ protected void _addExplicitAnyCreator(DeserializationContext ctxt,
         if (!useProps && (paramDef != null)) {
             // One more thing: if implicit name matches property with a getter
             // or field, we'll consider it property-based as well
-            paramName = candidate.findImplicitParamName(0);
+
+            // 25-May-2018, tatu: as per [databind#2051], looks like we have to get
+            //    not implicit name, but name with possible strategy-based-rename
+//            paramName = candidate.findImplicitParamName(0);
+            paramName = candidate.paramName(0);
             useProps = (paramName != null) && paramDef.couldSerialize();
         }
         if (useProps) {

src/main/java/com/fasterxml/jackson/databind/introspect/POJOPropertiesCollector.java

@@ -865,21 +865,20 @@ protected void _renameUsing(Map<String, POJOPropertyBuilder> propMap,
                 }
             }
             final String simpleName;
-            if (rename != null && !fullName.hasSimpleName(rename)) {
+            if ((rename != null) && !fullName.hasSimpleName(rename)) {
                 prop = prop.withSimpleName(rename);
                 simpleName = rename;
             } else {
                 simpleName = fullName.getSimpleName();
             }
-            /* As per [JACKSON-687], need to consider case where there may already be
-             * something in there...
-             */
+            // Need to consider case where there may already be something in there...
             POJOPropertyBuilder old = propMap.get(simpleName);
             if (old == null) {
                 propMap.put(simpleName, prop);
             } else {
                 old.addAll(prop);
             }
+
             // replace the creatorProperty too, if there is one
             _updateCreatorProperty(prop, _creatorProperties);
         }
@@ -1096,9 +1095,11 @@ private PropertyNamingStrategy _findNamingStrategy()
     }
 
     protected void _updateCreatorProperty(POJOPropertyBuilder prop, List<POJOPropertyBuilder> creatorProperties) {
+
         if (creatorProperties != null) {
+            final String intName = prop.getInternalName();
             for (int i = 0, len = creatorProperties.size(); i < len; ++i) {
-                if (creatorProperties.get(i).getInternalName().equals(prop.getInternalName())) {
+                if (creatorProperties.get(i).getInternalName().equals(intName)) {
                     creatorProperties.set(i, prop);
                     break;
                 }

src/test/java/com/fasterxml/jackson/failing/CreatorWithNamingStrategy2008Test.java renamed to src/test/java/com/fasterxml/jackson/databind/deser/creators/CreatorWithNamingStrategyTest.java

@@ -1,12 +1,12 @@
-package com.fasterxml.jackson.failing;
+package com.fasterxml.jackson.databind.deser.creators;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.databind.*;
 import com.fasterxml.jackson.databind.introspect.AnnotatedMember;
 import com.fasterxml.jackson.databind.introspect.AnnotatedParameter;
 import com.fasterxml.jackson.databind.introspect.JacksonAnnotationIntrospector;
 
-public class CreatorWithNamingStrategy2008Test extends BaseMapTest
+public class CreatorWithNamingStrategyTest extends BaseMapTest
 {
     @SuppressWarnings("serial")
     static class MyParamIntrospector extends JacksonAnnotationIntrospector
@@ -21,7 +21,7 @@ public String findImplicitPropertyName(AnnotatedMember param) {
         }
     }
 
-    // wrt [https://github.com/FasterXML/jackson-modules-java8/issues/67]
+    // [databind#2051]
     static class OneProperty {
         public String paramName0;
 
@@ -37,18 +37,17 @@ public OneProperty(String bogus) {
     /**********************************************************
      */
 
-    private final ObjectMapper MAPPER = objectMapper()
+    private final ObjectMapper MAPPER = newObjectMapper()
             .setAnnotationIntrospector(new MyParamIntrospector())
             .setPropertyNamingStrategy(PropertyNamingStrategy.SNAKE_CASE)
             ;
 
-    // Possibly [databind#2008], but originally
-    // wrt [https://github.com/FasterXML/jackson-modules-java8/issues/67]
+    // [databind#2051]
     public void testSnakeCaseWithOneArg() throws Exception
     {
         final String MSG = "1st";
         OneProperty actual = MAPPER.readValue(
-                "{\"first_property\":\""+MSG+"\"}",
+                "{\"param_name0\":\""+MSG+"\"}",
                 OneProperty.class);
         assertEquals("CTOR:"+MSG, actual.paramName0);
     }

src/test/java/com/fasterxml/jackson/failing/ImplicitParamsForCreator806Test.java

@@ -1,6 +1,5 @@
 package com.fasterxml.jackson.failing;
 
-import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.databind.*;
 import com.fasterxml.jackson.databind.introspect.AnnotatedMember;
 import com.fasterxml.jackson.databind.introspect.AnnotatedParameter;
@@ -38,7 +37,7 @@ public XY(int x, int y) {
     /**********************************************************
      */
 
-    private final ObjectMapper MAPPER = objectMapper()
+    private final ObjectMapper MAPPER = newObjectMapper()
             .setAnnotationIntrospector(new MyParamIntrospector())
             .setPropertyNamingStrategy(PropertyNamingStrategy.SNAKE_CASE)
             ;