some more trimming of config access

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

@@ -225,12 +225,12 @@ protected Object readResolve() {
      * needed to allow modules to add more custom type handling
      * (mostly to support types of non-Java JVM languages)
      */
-    protected /*final*/ TypeFactory _typeFactory;
+    protected final TypeFactory _typeFactory;
 
     /**
      * Provider for values to inject in deserialized POJOs.
      */
-    protected InjectableValues _injectableValues;
+    protected final InjectableValues _injectableValues;
 
     /**
      * Thing used for registering sub-types, resolving them to
@@ -269,6 +269,7 @@ protected Object readResolve() {
     /**********************************************************
      */
 
+    // !!! TODO 15-Mar-2018: Only mutable for Default Typing
     /**
      * Configuration object that defines basic global
      * settings for the serialization process
@@ -290,14 +291,15 @@ protected Object readResolve() {
     /**
      * Serializer factory used for constructing serializers.
      */
-    protected SerializerFactory _serializerFactory;
+    protected final SerializerFactory _serializerFactory;
 
     /*
     /**********************************************************
     /* Configuration settings, deserialization
     /**********************************************************
      */
 
+    // !!! TODO 15-Mar-2018: Only mutable for Default Typing
     /**
      * Configuration object that defines basic global
      * settings for the serialization process
@@ -309,7 +311,7 @@ protected Object readResolve() {
      * sub-classes. Contains references to objects needed for
      * deserialization construction (cache, factory).
      */
-    protected DefaultDeserializationContext _deserializationContext;
+    protected final DefaultDeserializationContext _deserializationContext;
 
     /*
     /**********************************************************
@@ -339,7 +341,7 @@ protected Object readResolve() {
      * no type information is needed for base type), or type-wrapped
      * deserializers (if it is needed)
      */
-    final protected ConcurrentHashMap<JavaType, JsonDeserializer<Object>> _rootDeserializers
+    protected final ConcurrentHashMap<JavaType, JsonDeserializer<Object>> _rootDeserializers
         = new ConcurrentHashMap<JavaType, JsonDeserializer<Object>>(64, 0.6f, 2);
 
     /*
@@ -354,7 +356,7 @@ protected Object readResolve() {
      *
      * @since 3.0
      */
-    final protected MapperBuilderState _savedBuilderState;
+    protected final MapperBuilderState _savedBuilderState;
 
     /*
     /**********************************************************************
@@ -506,10 +508,22 @@ public Version version() {
     /**********************************************************************
      */
 
+    /**
+     * Accessor for internal configuration object that contains settings for
+     * serialization operations (<code>writeValue(...)</code> methods)
+     *<br>
+     * NOTE: Not to be used by application code; needed by some tests
+     */
     public SerializationConfig serializationConfig() {
         return _serializationConfig;
     }
 
+    /**
+     * Accessor for internal configuration object that contains settings for
+     * deserialization operations (<code>readValue(...)</code> methods)
+     *<br>
+     * NOTE: Not to be used by application code; needed by some tests
+     */
     public DeserializationConfig deserializationConfig() {
         return _deserializationConfig;
     }
@@ -553,13 +567,6 @@ public InjectableValues getInjectableValues() {
         return _injectableValues;
     }
 
-    /**
-     * Method for accessing subtype resolver in use.
-     */
-    public SubtypeResolver getSubtypeResolver() {
-        return _subtypeResolver;
-    }
-
     /*
     /**********************************************************************
     /* Configuration: ser/deser factory, provider access
@@ -570,15 +577,6 @@ public SerializerProvider getSerializerProvider() {
         return _serializerProvider;
     }
 
-    /**
-     * Accessor for constructing and returning a {@link SerializerProvider}
-     * instance that may be used for accessing serializers. This is same as
-     * calling {@link #getSerializerProvider}, and calling <code>createInstance</code> on it.
-     */
-    public SerializerProvider serializerProviderInstance() {
-        return _serializerProvider();
-    }
-
     /*
     /**********************************************************************
     /* Configuration, access to type factory, type resolution
@@ -600,17 +598,6 @@ public TypeFactory getTypeFactory() {
     public JavaType constructType(Type t) {
         return _typeFactory.constructType(t);
     }
-
-    /*
-    /**********************************************************************
-    /* Configuration: mix-in annotations
-    /**********************************************************************
-     */
-
-    // For testing only:
-    public MixInHandler mixInHandler() {
-        return _mixIns;
-    }
 
     /*
     /**********************************************************************

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

@@ -728,14 +728,6 @@ public InjectableValues getInjectableValues() {
         return _injectableValues;
     }
 
-    /**
-     * @deprecated Since 3.0 use {@link #parserFactory}
-     */
-    @Deprecated
-    public TokenStreamFactory getFactory() {
-        return parserFactory();
-    }
-
     /**
      * @deprecated Since 3.0 use {@link #typeFactory}
      */

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

@@ -793,14 +793,6 @@ public ContextAttributes getAttributes() {
         return _config.getAttributes();
     }
 
-    /**
-     * @deprecated Since 3.0 use {@link #generatorFactory()}
-     */
-    @Deprecated
-    public TokenStreamFactory getFactory() {
-        return generatorFactory();
-    }
-
     /**
      * @deprecated Since 3.0 use {@link #typeFactory}
      */

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

@@ -245,26 +245,6 @@ public TypeSerializer findTypeSerializer(SerializationConfig config,
         BeanDescription bean = config.introspectClassAnnotations(baseType.getRawClass());
         return config.getTypeResolverProvider().findTypeSerializer(config,
                 bean.getClassInfo(), baseType);
-
-        /*
-        AnnotationIntrospector ai = config.getAnnotationIntrospector();
-        JsonTypeInfo.Value typeInfo = ai.findPolymorphicTypeInfo(config, ac);
-        TypeResolverBuilder<?> b = ai.findTypeResolver(config, ac, baseType, typeInfo);
-        // Ok: if there is no explicit type info handler, we may want to
-        // use a default. If so, config object knows what to use.
-        Collection<NamedType> subtypes = null;
-        if (b == null) {
-            b = config.getDefaultTyper(baseType);
-        } else {
-            subtypes = config.getSubtypeResolver().collectAndResolveSubtypesByClass(config, ac);
-        }
-        if (b == null) {
-            return null;
-        }
-        // 10-Jun-2015, tatu: Since not created for Bean Property, no need for post-processing
-        //    wrt EXTERNAL_PROPERTY
-        return b.buildTypeSerializer(config, baseType, subtypes);
-        */
     }
 
     /*

src/test/java/com/fasterxml/jackson/databind/ObjectMapperTest.java

@@ -190,17 +190,6 @@ public void testCustomDefaultPrettyPrinter() throws Exception
                 .writeValueAsString(input));
     }
 
-    // for [databind#898]
-    public void testSerializerProviderAccess() throws Exception
-    {
-        // ensure we have "fresh" instance, just in case
-        ObjectMapper mapper = new ObjectMapper();
-        JsonSerializer<?> ser = mapper.serializerProviderInstance()
-                .findValueSerializer(Bean.class);
-        assertNotNull(ser);
-        assertEquals(Bean.class, ser.handledType());
-    }
-
     public void testDataOutputViaMapper() throws Exception
     {
         ByteArrayOutputStream bytes = new ByteArrayOutputStream();

src/test/java/com/fasterxml/jackson/databind/module/SimpleModuleTest.java

@@ -329,17 +329,6 @@ public void setupModule(SetupContext context)
         assertNotNull(mapper);
     }
 
-    // [databind#626]
-    public void testMixIns626() throws Exception
-    {
-        // no real annotations, but nominally add ones from 'String' to 'Object', just for testing
-        ObjectMapper mapper = ObjectMapper.builder()
-                .addModule(new TestModule626(Object.class, String.class))
-                .build();
-        Class<?> found = mapper.mixInHandler().findMixInClassFor(Object.class);
-        assertEquals(String.class, found);
-    }
-
     public void testAutoDiscovery() throws Exception
     {
         List<?> mods = MapperBuilder.findModules();