Examples of com.fasterxml.jackson.databind.module.SimpleModule

Package com.fasterxml.jackson.databind.module

Examples of com.fasterxml.jackson.databind.module.SimpleModule

com.fasterxml.jackson.databind.module.SimpleModule
Simple {@link Module} implementation that allows registrationof serializers and deserializers, and bean serializer and deserializer modifiers.

    // Test to verify that contextual serializer can make use of property
    // (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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    // Test to verify that contextual serializer can also use annotations
    // 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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    // Simple verification of [JACKSON-455]
    public void testMultipleModules() throws Exception
    {
        MySimpleModule mod1 = new MySimpleModule("test1", Version.unknownVersion());
        SimpleModule mod2 = new SimpleModule("test2", Version.unknownVersion());
        mod1.addSerializer(SimpleEnum.class, new SimpleEnumSerializer());
        mod1.addDeserializer(CustomBean.class, new CustomBeanDeserializer());
        mod2.addDeserializer(SimpleEnum.class, new SimpleEnumDeserializer());
        mod2.addSerializer(CustomBean.class, new CustomBeanSerializer());


        ObjectMapper mapper = new ObjectMapper();
        mapper.registerModule(mod1);
        mapper.registerModule(mod2);
        assertEquals(quote("b"), mapper.writeValueAsString(SimpleEnum.B));

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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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     */
    
    // [JACKSON-644]: ability to register mix-ins
    public void testMixIns() throws Exception
    {
        SimpleModule module = new SimpleModule("test", Version.unknownVersion());
        module.setMixInAnnotation(MixableBean.class, MixInForOrder.class);
        ObjectMapper mapper = new ObjectMapper();
        mapper.registerModule(module);
        Map<String,Object> props = this.writeAndMap(mapper, new MixableBean());
        assertEquals(3, props.size());
        assertEquals(Integer.valueOf(3), props.get("c"));

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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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    // Serializer should get passed property context even if contained in a Collection.
    public void testMethodAnnotationInMap() throws Exception
    {
        ObjectMapper mapper = new ObjectMapper();
        SimpleModule module = new SimpleModule("test", Version.unknownVersion());
        module.addSerializer(String.class, new AnnotatedContextualSerializer());
        mapper.registerModule(module);
        ContextualMapBean map = new ContextualMapBean();
        map.beans.put("first", "In Map");
        assertEquals("{\"beans\":{\"first\":\"map->In Map\"}}", mapper.writeValueAsString(map));
    }

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    }


    public void testGenericEnumDeserialization() throws Exception
    {
       final ObjectMapper mapper = new ObjectMapper();
       SimpleModule module = new SimpleModule("foobar");
       module.addDeserializer(Enum.class, new LcEnumDeserializer());
       mapper.registerModule(module);
       // not sure this is totally safe but...
       assertEquals(TestEnum.JACKSON, mapper.readValue(quote("jackson"), TestEnum.class));
    }

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     */


    public void testCollectionDefaulting() throws Exception
    {
        ObjectMapper mapper = new ObjectMapper();
        SimpleModule mod = new SimpleModule("test", Version.unknownVersion());
        // let's ensure we get hierarchic mapping
        mod.addAbstractTypeMapping(Collection.class, List.class);
        mod.addAbstractTypeMapping(List.class, LinkedList.class);
        mapper.registerModule(mod);
        Collection<?> result = mapper.readValue("[]", Collection.class);
        assertEquals(LinkedList.class, result.getClass());
    }

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