jackson-databind: Ignore property during deserialization but retain in serialization not working

Using com.fasterxml.jackson.core:jackson-{core,annotations,databind} 2.1.0, I think the code below to ignore a computed property (i.e., no field) during deserialization (property zip), but include it in serialization used to work, but now it doesn’t. I also tried removing class level @JsonIgnoreProperties({"zip"}) and adding @JsonIgnore along with @JsonProperty("zip") but that didn’t work either.

The variant with a field still works: https://gist.github.com/2510887 .

    @JsonIgnoreProperties({"zip"})
    public static class Foo {
        private final int bar;


        public Foo(@JsonProperty("bar") final int bar) {
            this.bar = bar;
        }


        public int getBar() {
            return bar;
        }


        @JsonProperty("zip")
        public int getZip() {
            return bar * 2;
        }


        static <T> T fromJson(final String json, final Class<T> clazz) {
            try {
                return new ObjectMapper().readValue(json, clazz);
            } catch (final IOException ioe) {
                throw Throwables.propagate(ioe);
            }
        }


        static String asJson(final Object obj) {
            try {
                return new ObjectMapper().writeValueAsString(obj);
            } catch (final IOException ioe) {
                throw Throwables.propagate(ioe);
            }
        }
    }


    @Test
    public void testIgnoreDuringDeserializationButNotSerialization() {
        final Foo foo = new Foo(1);
        final String json = Foo.asJson(foo);
        // json does not include zip computed property
        LG.info("foo: {}", json);
        final Foo reconstituted = Foo.fromJson(json, Foo.class);
    }