Package com.fasterxml.jackson.databind

Examples of com.fasterxml.jackson.databind.ObjectMapper.readValue()

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        SuperType bean = mapper.readValue("{\"@type\":\"TypeB\", \"b\":13}", SuperType.class);
        assertSame(SubB.class, bean.getClass());
        assertEquals(13, ((SubB) bean).b);

        // but we can also explicitly register name too
        bean = mapper.readValue("{\"@type\":\"TypeD\", \"d\":-4}", SuperType.class);
        assertSame(SubD.class, bean.getClass());
        assertEquals(-4, ((SubD) bean).d);
    }

    // Trying to reproduce [JACKSON-366]
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    public void testDefaultImpl() throws Exception
    {
        ObjectMapper mapper = new ObjectMapper();
        // first, test with no type information
        SuperTypeWithDefault bean = mapper.readValue("{\"a\":13}", SuperTypeWithDefault.class);
        assertEquals(DefaultImpl.class, bean.getClass());
        assertEquals(13, ((DefaultImpl) bean).a);

        // and then with unmapped info
        bean = mapper.readValue("{\"a\":14,\"#type\":\"foobar\"}", SuperTypeWithDefault.class);
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        SuperTypeWithDefault bean = mapper.readValue("{\"a\":13}", SuperTypeWithDefault.class);
        assertEquals(DefaultImpl.class, bean.getClass());
        assertEquals(13, ((DefaultImpl) bean).a);

        // and then with unmapped info
        bean = mapper.readValue("{\"a\":14,\"#type\":\"foobar\"}", SuperTypeWithDefault.class);
        assertEquals(DefaultImpl.class, bean.getClass());
        assertEquals(14, ((DefaultImpl) bean).a);

        bean = mapper.readValue("{\"#type\":\"foobar\",\"a\":15}", SuperTypeWithDefault.class);
        assertEquals(DefaultImpl.class, bean.getClass());
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        // and then with unmapped info
        bean = mapper.readValue("{\"a\":14,\"#type\":\"foobar\"}", SuperTypeWithDefault.class);
        assertEquals(DefaultImpl.class, bean.getClass());
        assertEquals(14, ((DefaultImpl) bean).a);

        bean = mapper.readValue("{\"#type\":\"foobar\",\"a\":15}", SuperTypeWithDefault.class);
        assertEquals(DefaultImpl.class, bean.getClass());
        assertEquals(15, ((DefaultImpl) bean).a);

        bean = mapper.readValue("{\"#type\":\"foobar\"}", SuperTypeWithDefault.class);
        assertEquals(DefaultImpl.class, bean.getClass());
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        bean = mapper.readValue("{\"#type\":\"foobar\",\"a\":15}", SuperTypeWithDefault.class);
        assertEquals(DefaultImpl.class, bean.getClass());
        assertEquals(15, ((DefaultImpl) bean).a);

        bean = mapper.readValue("{\"#type\":\"foobar\"}", SuperTypeWithDefault.class);
        assertEquals(DefaultImpl.class, bean.getClass());
        assertEquals(0, ((DefaultImpl) bean).a);
    }

    // [JACKSON-505]: ok to also default to mapping there might be for base type
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        final String JSON = "{\"a\":123}";
       
        // first: without registration etc, epic fail:
        ObjectMapper mapper = new ObjectMapper();
        try {
            mapper.readValue(JSON, SuperTypeWithoutDefault.class);
            fail("Expected an exception");
        } catch (JsonMappingException e) {
            verifyException(e, "missing property");
        }
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        // 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);

        bean = mapper.readValue("{\"#type\":\"foobar\"}", SuperTypeWithoutDefault.class);
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        SuperTypeWithoutDefault bean = mapper.readValue(JSON, SuperTypeWithoutDefault.class);
        assertNotNull(bean);
        assertEquals(DefaultImpl505.class, bean.getClass());
        assertEquals(123, ((DefaultImpl505) bean).a);

        bean = mapper.readValue("{\"#type\":\"foobar\"}", SuperTypeWithoutDefault.class);
        assertEquals(DefaultImpl505.class, bean.getClass());
        assertEquals(0, ((DefaultImpl505) bean).a);
   
    }
}
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        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);
        assertEquals("abc", result.value);
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        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);
        assertEquals("abc", result.value);
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