Add feature to inverse read/write access logic

.vscode/settings.json

@@ -0,0 +1,6 @@
+{
+ "java.format.comments.enabled": false,
+ "java.format.enabled": false,
+ "java.format.onType.enabled": false,
+ "java.saveActions.organizeImports": false,
+}

src/main/java/com/fasterxml/jackson/databind/MapperFeature.java

@@ -1,5 +1,6 @@
 package com.fasterxml.jackson.databind;
 
+import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.databind.annotation.JsonSerialize;
 import com.fasterxml.jackson.databind.cfg.ConfigFeature;
 
@@ -176,6 +177,14 @@ public enum MapperFeature implements ConfigFeature
  */
  OVERRIDE_PUBLIC_ACCESS_MODIFIERS(true),
 
+ /**
+ * Feature that inverse logic in {@link JsonProperty#access}
+ * for <code>READ_ONLY</code> and <code>WRITE_ONLY</code>.
+ *<p>
+ * Feature is disabled by default.
+ */
+ INVERSE_READ_WRITE_ACCESS(false),
+
  /*
  /**********************************************************************
  /* Type-handling features

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

@@ -814,6 +814,20 @@ public JsonProperty.Access removeNonVisible(boolean inferMutators,
  if (acc == null) {
  acc = JsonProperty.Access.AUTO;
  }
+
+ // [databind#2951] add feature to inverse access logic
+ if (_config.isEnabled(MapperFeature.INVERSE_READ_WRITE_ACCESS)) {
+ switch (acc) {
+ case READ_ONLY:
+ acc = JsonProperty.Access.WRITE_ONLY;
+ break;
+ case WRITE_ONLY:
+ acc = JsonProperty.Access.READ_ONLY;
+ break;
+ default:
+ }
+ }
+
  switch (acc) {
  case READ_ONLY:
  // [databind#2719]: Need to add ignorals, first, keeping in mind

src/test/java/com/fasterxml/jackson/databind/deser/ReadOrWriteOnlyTest.java

@@ -9,6 +9,7 @@
 import com.fasterxml.jackson.annotation.JsonProperty;
 
 import com.fasterxml.jackson.databind.*;
+import com.fasterxml.jackson.databind.json.JsonMapper;
 
 public class ReadOrWriteOnlyTest extends BaseMapTest
 {
@@ -29,6 +30,15 @@ public int getY() {
  }
  }
 
+ // for [databind#2951], add feature to inverse access logic
+ static class ReadAWriteB {
+ @JsonProperty(access=JsonProperty.Access.READ_ONLY)
+ public int a = 1;
+
+ @JsonProperty(access=JsonProperty.Access.WRITE_ONLY)
+ public int b = 2;
+ }
+
  public static class Pojo935
  {
  private String firstName = "Foo";
@@ -144,6 +154,21 @@ public void testReadOnlyAndWriteOnly() throws Exception
  assertEquals(6, result.y);
  }
 
+ // [databind#2951] add feature to inverse access logic
+ public void testInverseReadOnlyAndWriteOnly() throws Exception {
+ ObjectMapper mapper = JsonMapper.builder()
+ .enable(MapperFeature.INVERSE_READ_WRITE_ACCESS)
+ .build();
+
+ String json = mapper.writeValueAsString(new ReadAWriteB());
+ assertEquals("{\"b\":2}", json);
+
+ ReadAWriteB result = mapper.readValue("{\"a\":5, \"b\":6}", ReadAWriteB.class);
+ assertNotNull(result);
+ assertEquals(5, result.a);
+ assertEquals(2, result.b);
+ }
+
  public void testReadOnly935() throws Exception
  {
  String json = MAPPER.writeValueAsString(new Pojo935());