Examples of org.codehaus.jackson.map.module.SimpleModule

org.codehaus.jackson.map.module.SimpleModule
Simple {@link Module} implementation that allows registrationof serializers and deserializers, and bean serializer and deserializer modifiers. @since 1.7


    // for [JACKSON-670]
    public void testEmptyBean() throws Exception
    {
        ObjectMapper mapper = new ObjectMapper();
        mapper.registerModule(new SimpleModule("test", Version.unknownVersion()) {
            @Override
            public void setupModule(SetupContext context)
            {
                super.setupModule(context);
                context.addBeanSerializerModifier(new EmptyBeanModifier());

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    // Test for [JACKSON-643]
    public void testCustomRootNulls() throws Exception
    {
        ObjectMapper mapper = new ObjectMapper();
        SimpleModule module = new SimpleModule("test", Version.unknownVersion());
        module.addDeserializer(String.class, new FunnyNullDeserializer());
        mapper.registerModule(module);


        // should get non-default null directly:
        String str = mapper.readValue("null", String.class);
        assertNotNull(str);

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            verifyException(e, "missing property");
        }


        // but then succeed when we register default impl
        mapper = new ObjectMapper();
        SimpleModule module = new SimpleModule("test", Version.unknownVersion());
        module.addAbstractTypeMapping(SuperTypeWithoutDefault.class, DefaultImpl505.class);
        mapper.registerModule(module);
        SuperTypeWithoutDefault bean = mapper.readValue(JSON, SuperTypeWithoutDefault.class);
        assertNotNull(bean);
        assertEquals(DefaultImpl505.class, bean.getClass());
        assertEquals(123, ((DefaultImpl505) bean).a);

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     */


    public void testSimpleKeySer() throws Exception
    {
        ObjectMapper mapper = new ObjectMapper();
        SimpleModule module = new SimpleModule("test", Version.unknownVersion());
        module.addKeySerializer(String.class, new ContextualKeySerializer("prefix"));
        mapper.registerModule(module);
        Map<String,Object> input = new HashMap<String,Object>();
        input.put("a", Integer.valueOf(3));
        String json = mapper.writerWithType(TypeFactory.defaultInstance().constructMapType(HashMap.class, String.class, Object.class))
            .writeValueAsString(input);

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     */


    public void testSimpleKeyDeser() throws Exception
    {
        ObjectMapper mapper = new ObjectMapper();
        SimpleModule module = new SimpleModule("test", Version.unknownVersion());
        module.addKeyDeserializer(String.class, new ContextualDeser("???"));
        mapper.registerModule(module);
        MapBean result = mapper.readValue("{\"map\":{\"a\":3}}", MapBean.class);
        Map<String,Integer> map = result.map;
        assertNotNull(map);
        assertEquals(1, map.size());

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     * (method, field) annotations.
     */
    public void testMethodAnnotations() throws Exception
    {
        ObjectMapper mapper = new ObjectMapper();
        SimpleModule module = new SimpleModule("test", Version.unknownVersion());
        module.addSerializer(String.class, new AnnotatedContextualSerializer());
        mapper.registerModule(module);
        assertEquals("{\"value\":\"see:foobar\"}", mapper.writeValueAsString(new ContextualBean("foobar")));
    }

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     * for enclosing class.
     */
    public void testClassAnnotations() throws Exception
    {
        ObjectMapper mapper = new ObjectMapper();
        SimpleModule module = new SimpleModule("test", Version.unknownVersion());
        module.addSerializer(String.class, new AnnotatedContextualSerializer());
        mapper.registerModule(module);
        assertEquals("{\"value\":\"Voila->xyz\"}", mapper.writeValueAsString(new BeanWithClassConfig("xyz")));
    }

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    }


    public void testWrappedBean() throws Exception
    {
        ObjectMapper mapper = new ObjectMapper();
        SimpleModule module = new SimpleModule("test", Version.unknownVersion());
        module.addSerializer(String.class, new AnnotatedContextualSerializer());
        mapper.registerModule(module);
        assertEquals("{\"wrapped\":{\"value\":\"see:xyz\"}}", mapper.writeValueAsString(new ContextualBeanWrapper("xyz")));
    }

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     * Serializer should get passed property context even if contained in an array.
     */
    public void testMethodAnnotationInArray() throws Exception
    {
        ObjectMapper mapper = new ObjectMapper();
        SimpleModule module = new SimpleModule("test", Version.unknownVersion());
        module.addSerializer(String.class, new AnnotatedContextualSerializer());
        mapper.registerModule(module);
        ContextualArrayBean beans = new ContextualArrayBean("123");
        assertEquals("{\"beans\":[\"array->123\"]}", mapper.writeValueAsString(beans));
    }

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     * Serializer should get passed property context even if contained in a Collection.
     */
    public void testMethodAnnotationInList() throws Exception
    {
        ObjectMapper mapper = new ObjectMapper();
        SimpleModule module = new SimpleModule("test", Version.unknownVersion());
        module.addSerializer(String.class, new AnnotatedContextualSerializer());
        mapper.registerModule(module);
        ContextualListBean beans = new ContextualListBean("abc");
        assertEquals("{\"beans\":[\"list->abc\"]}", mapper.writeValueAsString(beans));
    }

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