Fix #95 (oldest fixed issue so far for 2.6!)

Author: cowtowncoder

pom.xml

@@ -69,7 +69,7 @@ javax.xml.datatype, javax.xml.namespace, javax.xml.parsers
     <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>
       <artifactId>jackson-annotations</artifactId>
-      <version>2.5.0</version>
+      <version>2.6.0-SNAPSHOT</version>
     </dependency>
     <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>

release-notes/VERSION

@@ -6,6 +6,7 @@ Project: jackson-databind
 
 2.6.0 (not yet released)
 
+#95: Allow read-only properties with `@JsonIgnoreProperties(allowGetters=true)`
 #312: Support Type Id mappings where two ids map to same Class
 #348: ObjectMapper.valueToTree does not work with @JsonRawValue
  (reported by Chris P, pimlottc@github)

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

@@ -223,11 +223,23 @@ public PropertyName findRootName(AnnotatedClass ac) {
      * List of property names is applied
      * after other detection mechanisms, to filter out these specific
      * properties from being serialized and deserialized.
+     * 
+     * @param forSerialization True if requesting properties to ignore for serialization;
+     *   false if for deserialization
+     */
+    public String[] findPropertiesToIgnore(Annotated ac, boolean forSerialization) {
+        // !!! Change direction in 2.7 or later
+        return findPropertiesToIgnore(ac);
+    }
+
+    /**
+     * @deprecated Since 2.6, use variant that takes second argument.
      */
+    @Deprecated
     public String[] findPropertiesToIgnore(Annotated ac) {
         return null;
     }
-
+    
     /**
      * Method for checking whether an annotation indicates that all unknown properties
      */

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

@@ -1164,7 +1164,8 @@ public JsonDeserializer<?> createMapDeserializer(DeserializationContext ctxt,
                 if (deser == null) {
                     ValueInstantiator inst = findValueInstantiator(ctxt, beanDesc);
                     MapDeserializer md = new MapDeserializer(type, inst, keyDes, contentDeser, contentTypeDeser);
-                    md.setIgnorableProperties(config.getAnnotationIntrospector().findPropertiesToIgnore(beanDesc.getClassInfo()));
+                    AnnotationIntrospector ai = config.getAnnotationIntrospector();
+                    md.setIgnorableProperties(ai.findPropertiesToIgnore(beanDesc.getClassInfo(), false));
                     deser = md;
                 }
             }

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

@@ -618,7 +618,7 @@ public JsonDeserializer<?> createContextual(DeserializationContext ctxt,
         }
         // And possibly add more properties to ignore
         if (accessor != null) {
-            String[] ignorals = intr.findPropertiesToIgnore(accessor);
+            String[] ignorals = intr.findPropertiesToIgnore(accessor, false);
             if (ignorals != null && ignorals.length != 0) {
                 HashSet<String> newIgnored = ArrayBuilders.setAndArray(contextual._ignorableProps, ignorals);
                 contextual = contextual.withIgnorableProperties(newIgnored);

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

@@ -451,7 +451,7 @@ protected void addBeanProps(DeserializationContext ctxt,
             }
         }
         // Or explicit/implicit definitions?
-        Set<String> ignored = ArrayBuilders.arrayToSet(intr.findPropertiesToIgnore(beanDesc.getClassInfo()));        
+        Set<String> ignored = ArrayBuilders.arrayToSet(intr.findPropertiesToIgnore(beanDesc.getClassInfo(), false));        
         for (String propName : ignored) {
             builder.addIgnorable(propName);
         }

src/main/java/com/fasterxml/jackson/databind/deser/std/MapDeserializer.java

@@ -254,7 +254,7 @@ public JsonDeserializer<?> createContextual(DeserializationContext ctxt,
         if (intr != null && property != null) {
             AnnotatedMember member = property.getMember();
             if (member != null) {
-                String[] moreToIgnore = intr.findPropertiesToIgnore(member);
+                String[] moreToIgnore = intr.findPropertiesToIgnore(member, false);
                 if (moreToIgnore != null) {
                     ignored = (ignored == null) ? new HashSet<String>() : new HashSet<String>(ignored);
                     for (String str : moreToIgnore) {

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

@@ -113,15 +113,24 @@ public PropertyName findRootName(AnnotatedClass ac)
     }
 
     @Override
-    public String[] findPropertiesToIgnore(Annotated ac)
-    {
+    @Deprecated // since 2.6
+    public String[] findPropertiesToIgnore(Annotated ac) {
         String[] result = _primary.findPropertiesToIgnore(ac);
         if (result == null) {
             result = _secondary.findPropertiesToIgnore(ac);
         }
         return result;            
     }
 
+    @Override
+    public String[] findPropertiesToIgnore(Annotated ac, boolean forSerialization) {
+        String[] result = _primary.findPropertiesToIgnore(ac, forSerialization);
+        if (result == null) {
+            result = _secondary.findPropertiesToIgnore(ac, forSerialization);
+        }
+        return result;            
+    }
+
     @Override
     public Boolean findIgnoreUnknownProperties(AnnotatedClass ac)
     {

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

@@ -81,11 +81,31 @@ public PropertyName findRootName(AnnotatedClass ac)
     }
 
     @Override
+    @Deprecated // since 2.6, remove from 2.7 or later
     public String[] findPropertiesToIgnore(Annotated ac) {
         JsonIgnoreProperties ignore = _findAnnotation(ac, JsonIgnoreProperties.class);
         return (ignore == null) ? null : ignore.value();
     }
 
+    @Override // since 2.6
+    public String[] findPropertiesToIgnore(Annotated ac, boolean forSerialization) {
+        JsonIgnoreProperties ignore = _findAnnotation(ac, JsonIgnoreProperties.class);
+        if (ignore == null) {
+            return null;
+        }
+        // 13-May-2015, tatu: As per [databind#95], allow read-only/write-only props
+        if (forSerialization) {
+            if (ignore.allowGetters()) {
+                return null;
+            }
+        } else {
+            if (ignore.allowSetters()) {
+                return null;
+            }
+        }
+        return ignore.value();
+    }
+    
     @Override
     public Boolean findIgnoreUnknownProperties(AnnotatedClass ac) {
         JsonIgnoreProperties ignore = _findAnnotation(ac, JsonIgnoreProperties.class);

src/main/java/com/fasterxml/jackson/databind/ser/BasicSerializerFactory.java

@@ -761,7 +761,8 @@ protected JsonSerializer<?> buildMapSerializer(SerializationConfig config,
             } else {
             */
             Object filterId = findFilterId(config, beanDesc);
-            MapSerializer mapSer = MapSerializer.construct(config.getAnnotationIntrospector().findPropertiesToIgnore(beanDesc.getClassInfo()),
+            AnnotationIntrospector ai = config.getAnnotationIntrospector();
+            MapSerializer mapSer = MapSerializer.construct(ai.findPropertiesToIgnore(beanDesc.getClassInfo(), true),
                     type, staticTyping, elementTypeSerializer,
                     keySerializer, elementValueSerializer, filterId);
             Object suppressableValue = findSuppressableContentValue(config,

src/main/java/com/fasterxml/jackson/databind/ser/BeanSerializerFactory.java

@@ -587,7 +587,7 @@ protected List<BeanPropertyWriter> filterBeanProperties(SerializationConfig conf
     {
         AnnotationIntrospector intr = config.getAnnotationIntrospector();
         AnnotatedClass ac = beanDesc.getClassInfo();
-        String[] ignored = intr.findPropertiesToIgnore(ac);
+        String[] ignored = intr.findPropertiesToIgnore(ac, true);
         if (ignored != null && ignored.length > 0) {
             HashSet<String> ignoredSet = ArrayBuilders.arrayToSet(ignored);
             Iterator<BeanPropertyWriter> it = props.iterator();

src/main/java/com/fasterxml/jackson/databind/ser/std/BeanSerializerBase.java

@@ -420,7 +420,7 @@ public JsonSerializer<?> createContextual(SerializerProvider provider,
 
         // Then we may have an override for Object Id
         if (accessor != null) {
-            ignorals = intr.findPropertiesToIgnore(accessor);
+            ignorals = intr.findPropertiesToIgnore(accessor, true);
             ObjectIdInfo objectIdInfo = intr.findObjectIdInfo(accessor);
             if (objectIdInfo == null) {
                 // no ObjectId override, but maybe ObjectIdRef?

src/main/java/com/fasterxml/jackson/databind/ser/std/MapSerializer.java

@@ -356,7 +356,7 @@ public JsonSerializer<?> createContextual(SerializerProvider provider,
         HashSet<String> ignored = _ignoredEntries;
         boolean sortKeys = false;
         if (intr != null && propertyAcc != null) {
-            String[] moreToIgnore = intr.findPropertiesToIgnore(propertyAcc);
+            String[] moreToIgnore = intr.findPropertiesToIgnore(propertyAcc, true);
             if (moreToIgnore != null) {
                 ignored = (ignored == null) ? new HashSet<String>() : new HashSet<String>(ignored);
                 for (String str : moreToIgnore) {

src/test/java/com/fasterxml/jackson/databind/filter/TestIgnorePropsForSerialization.java renamed to src/test/java/com/fasterxml/jackson/databind/filter/IgnorePropsTest.java

@@ -6,7 +6,7 @@
 
 import com.fasterxml.jackson.databind.*;
 
-public class TestIgnorePropsForSerialization
+public class IgnorePropsTest
     extends BaseMapTest
 {
     @JsonIgnoreProperties({"b", "c"})
@@ -63,7 +63,7 @@ static class MapWrapper {
             value.put("b", 2);
         }
     }
-    
+
     /*
     /****************************************************************
     /* Unit tests

src/test/java/com/fasterxml/jackson/databind/filter/ReadOnlyProperties95Test.java

@@ -0,0 +1,29 @@
+package com.fasterxml.jackson.databind.filter;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.databind.*;
+
+/**
+ * Failing test related to [databind#95]
+ */
+public class ReadOnlyProperties95Test extends BaseMapTest
+{
+    @JsonIgnoreProperties(value={ "computed" }, allowGetters=true)
+    static class ReadOnlyBean
+    {
+        public int value = 3;
+        
+        public int getComputed() { return 32; }
+    }
+    
+    public void testReadOnlyProp() throws Exception
+    {
+        ObjectMapper m = new ObjectMapper();
+        String json = m.writeValueAsString(new ReadOnlyBean());
+        if (json.indexOf("computed") < 0) {
+            fail("Should have property 'computed', didn't: "+json);
+        }
+        ReadOnlyBean bean = m.readValue(json, ReadOnlyBean.class);
+        assertNotNull(bean);
+    }
+}