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jsondeserializer

Pragya Keshap answered on February 28, 2023 Popularity 9/10 Helpfulness 2/10

answer jsondeserializer

jsondeserializer

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public class JsonDeserializer<T> implements Deserializer<T> {
    private ObjectMapper objectMapper = new ObjectMapper();
    private Class<T> className;
    public static final String KEY_CLASS_NAME_CONFIG = "key.class.name";
    public static final String VALUE_CLASS_NAME_CONFIG = "value.class.name";

    public JsonDeserializer() {

    }

    /**
     * Set the specific Java Object Class Name
     *
     * @param props set specific.class.name to your specific Java Class Name
     * @param isKey set it to false
     */
    @SuppressWarnings("unchecked")
    @Override
    public void configure(Map<String, ?> props, boolean isKey) {
        if (isKey)
            className = (Class<T>) props.get(KEY_CLASS_NAME_CONFIG);
        else
            className = (Class<T>) props.get(VALUE_CLASS_NAME_CONFIG);
    }

    /**
     * Deserialize to a POJO
     *
     * @param topic topic name
     * @param data  message bytes
     * @return Specific Java Object
     */
    @Override
    public T deserialize(String topic, byte[] data) {
        if (data == null) {
            return null;
        }
        try {
            return objectMapper.readValue(data, className);
        } catch (Exception e) {
            throw new SerializationException(e);
        }
    }

    @Override
    public void close() {
        //nothing to close
    }
}

Popularity 9/10 Helpfulness 2/10 Language java

Source: Grepper

Tags: java

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Contributed on Feb 28 2023

Pragya Keshap

0 Answers Avg Quality 2/10

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