TaskDeserializer.java

public class TaskDeserializer extends StdDeserializer<TaskWrapper> {

    public TaskDeserializer() {
        super(TaskWrapper.class);
    }

    @Override
    public JsonParserUtil deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException {

        List<Task> trackList = new ArrayList<>();

        TaskWrapper wrapper = new TaskWrapper();

        JsonNode node = jsonParser.getCodec().readTree(jsonParser);

        if (node.isArray()) {

            for (final JsonNode objNode : node) {

                Task task = new Task();
                task.setId(objNode.get("id").asInt());
                task.setName(objNode.get("task_name").asText());
                task.setStatus(objNode.get("status").asText());

                trackList.add(task);
            }

        } else {

            Task task = new Task();
            task.setId(node.get("id").asInt());
            task.setName(node.get("task_name").asText());
            task.setStatus(node.get("status").asText());

            trackList.add(task);
        }


        wrapper.addTasks(trackList);

        return wrapper;
    }
}