Record constructor with single write-only parameter should result in …

…properties-based creator, to fix #3897. (#3910)

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

@@ -1032,6 +1032,10 @@ private boolean _checkIfCreatorPropertyBased(BeanDescription beanDesc,
                 }
             }
         }
+        // [databind#3897]: Record canonical constructor will have implicitly named propDef
+        if (propDef != null && !propDef.isExplicitlyNamed() && beanDesc.isRecordType()) {
+            return true;
+        }
         // in absence of everything else, default to delegating
         return false;
     }

src/test-jdk14/java/com/fasterxml/jackson/databind/records/RecordBasicsTest.java

@@ -40,6 +40,20 @@ record SnakeRecord(String myId, String myValue){}
 
     record RecordWithJsonDeserialize(int id, @JsonDeserialize(converter = StringTrimmer.class) String name) { }
 
+    record RecordSingleWriteOnly(@JsonProperty(access = JsonProperty.Access.WRITE_ONLY) int id) { }
+
+    record RecordSomeWriteOnly(
+            @JsonProperty(access = JsonProperty.Access.WRITE_ONLY) int id,
+            @JsonProperty(access = JsonProperty.Access.WRITE_ONLY) String name,
+            String email) {
+    }
+
+    record RecordAllWriteOnly(
+            @JsonProperty(access = JsonProperty.Access.WRITE_ONLY) int id,
+            @JsonProperty(access = JsonProperty.Access.WRITE_ONLY) String name,
+            @JsonProperty(access = JsonProperty.Access.WRITE_ONLY) String email) {
+    }
+
     private final ObjectMapper MAPPER = newJsonMapper();
 
     /*
@@ -204,6 +218,53 @@ public void testDeserializeJsonDeserializeRecord() throws Exception {
         assertEquals(new RecordWithJsonDeserialize(123, "Bob"), value);
     }
 
+    /*
+    /**********************************************************************
+    /* Test methods, JsonProperty(access=WRITE_ONLY)
+    /**********************************************************************
+     */
+
+    public void testSerialize_SingleWriteOnlyParameter() throws Exception {
+        String json = MAPPER.writeValueAsString(new RecordSingleWriteOnly(123));
+
+        assertEquals("{}", json);
+    }
+
+    // [databind#3897]
+    public void testDeserialize_SingleWriteOnlyParameter() throws Exception {
+        RecordSingleWriteOnly value = MAPPER.readValue("{\"id\":123}", RecordSingleWriteOnly.class);
+
+        assertEquals(new RecordSingleWriteOnly(123), value);
+    }
+
+    public void testSerialize_SomeWriteOnlyParameter() throws Exception {
+        String json = MAPPER.writeValueAsString(new RecordSomeWriteOnly(123, "Bob", "[email protected]"));
+
+        assertEquals("{\"email\":\"[email protected]\"}", json);
+    }
+
+    public void testDeserialize_SomeWriteOnlyParameter() throws Exception {
+        RecordSomeWriteOnly value = MAPPER.readValue(
+                "{\"id\":123,\"name\":\"Bob\",\"email\":\"[email protected]\"}",
+                RecordSomeWriteOnly.class);
+
+        assertEquals(new RecordSomeWriteOnly(123, "Bob", "[email protected]"), value);
+    }
+
+    public void testSerialize_AllWriteOnlyParameter() throws Exception {
+        String json = MAPPER.writeValueAsString(new RecordAllWriteOnly(123, "Bob", "[email protected]"));
+
+        assertEquals("{}", json);
+    }
+
+    public void testDeserialize_AllWriteOnlyParameter() throws Exception {
+        RecordAllWriteOnly value = MAPPER.readValue(
+                "{\"id\":123,\"name\":\"Bob\",\"email\":\"[email protected]\"}",
+                RecordAllWriteOnly.class);
+
+        assertEquals(new RecordAllWriteOnly(123, "Bob", "[email protected]"), value);
+    }
+
     /*
     /**********************************************************************
     /* Internal helper methods