Package org.codehaus.jackson.map

Examples of org.codehaus.jackson.map.ObjectMapper.writeValueAsString()

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    public void testCustomTypeIdResolver() throws Exception
    {
        ObjectMapper m = new ObjectMapper();
        List<JavaType> types = new ArrayList<JavaType>();
        CustomResolver.initTypes = types;
        String json = m.writeValueAsString(new CustomBean[] { new CustomBean(28) });
        assertEquals("[{\"*\":{\"x\":28}}]", json);
        assertEquals(1, types.size());
        assertEquals(CustomBean.class, types.get(0).getRawClass());

        types = new ArrayList<JavaType>();
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    public void testPropertyWithSubtypes() throws Exception
    {
        ObjectMapper mapper = new ObjectMapper();
        // must register subtypes
        mapper.registerSubtypes(SubB.class, SubC.class, SubD.class);
        String json = mapper.writeValueAsString(new PropertyBean(new SubC()));
        PropertyBean result = mapper.readValue(json, PropertyBean.class);
        assertSame(SubC.class, result.value.getClass());
    }

    public void testSerialization() throws Exception
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    public void testSerialization() throws Exception
    {
        // serialization can detect type name ok without anything extra:
        SubB bean = new SubB();
        ObjectMapper mapper = new ObjectMapper();
        assertEquals("{\"@type\":\"TypeB\",\"b\":1}", mapper.writeValueAsString(bean));

        // but we can override type name here too
        mapper = new ObjectMapper();
        mapper.registerSubtypes(new NamedType(SubB.class, "typeB"));
        assertEquals("{\"@type\":\"typeB\",\"b\":1}", mapper.writeValueAsString(bean));
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        assertEquals("{\"@type\":\"TypeB\",\"b\":1}", mapper.writeValueAsString(bean));

        // but we can override type name here too
        mapper = new ObjectMapper();
        mapper.registerSubtypes(new NamedType(SubB.class, "typeB"));
        assertEquals("{\"@type\":\"typeB\",\"b\":1}", mapper.writeValueAsString(bean));

        // and default name ought to be simple class name; with context
        assertEquals("{\"@type\":\"TestSubtypes$SubD\",\"d\":0}", mapper.writeValueAsString(new SubD())); 
    }
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        mapper = new ObjectMapper();
        mapper.registerSubtypes(new NamedType(SubB.class, "typeB"));
        assertEquals("{\"@type\":\"typeB\",\"b\":1}", mapper.writeValueAsString(bean));

        // and default name ought to be simple class name; with context
        assertEquals("{\"@type\":\"TestSubtypes$SubD\",\"d\":0}", mapper.writeValueAsString(new SubD())); 
    }

    public void testDeserializationNonNamed() throws Exception
    {
        ObjectMapper mapper = new ObjectMapper();
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    public void testEmptyBean() throws Exception
    {
        // First, with annotations
        ObjectMapper mapper = new ObjectMapper();
        mapper.configure(SerializationConfig.Feature.FAIL_ON_EMPTY_BEANS, true);
        String json = mapper.writeValueAsString(new EmptyBean());
        assertEquals("{\"@type\":\"TestSubtypes$EmptyBean\"}", json);

        mapper = new ObjectMapper();
        mapper.configure(SerializationConfig.Feature.FAIL_ON_EMPTY_BEANS, false);
        json = mapper.writeValueAsString(new EmptyBean());
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        String json = mapper.writeValueAsString(new EmptyBean());
        assertEquals("{\"@type\":\"TestSubtypes$EmptyBean\"}", json);

        mapper = new ObjectMapper();
        mapper.configure(SerializationConfig.Feature.FAIL_ON_EMPTY_BEANS, false);
        json = mapper.writeValueAsString(new EmptyBean());
        assertEquals("{\"@type\":\"TestSubtypes$EmptyBean\"}", json);

        // and then with defaults
        mapper = new ObjectMapper();
        mapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
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        // and then with defaults
        mapper = new ObjectMapper();
        mapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        mapper.configure(SerializationConfig.Feature.FAIL_ON_EMPTY_BEANS, false);
        json = mapper.writeValueAsString(new EmptyNonFinal());
        assertEquals("[\"org.codehaus.jackson.map.jsontype.TestSubtypes$EmptyNonFinal\",{}]", json);
    }

    public void testDefaultImpl() throws Exception
    {
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        ObjectMapper m = new ObjectMapper();
        String json;
        DynamicWrapper result;

        // first, check "native" types
        json = m.writeValueAsString(new DynamicWrapper(Integer.valueOf(3)));
        result = m.readValue(json, DynamicWrapper.class);
        assertEquals(Integer.valueOf(3), result.value);

        json = m.writeValueAsString(new DynamicWrapper("abc"));
        result = m.readValue(json, DynamicWrapper.class);
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        // first, check "native" types
        json = m.writeValueAsString(new DynamicWrapper(Integer.valueOf(3)));
        result = m.readValue(json, DynamicWrapper.class);
        assertEquals(Integer.valueOf(3), result.value);

        json = m.writeValueAsString(new DynamicWrapper("abc"));
        result = m.readValue(json, DynamicWrapper.class);
        assertEquals("abc", result.value);

        json = m.writeValueAsString(new DynamicWrapper("abc"));
        result = m.readValue(json, DynamicWrapper.class);
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