Identifying JsonVariant type of a deserialized document

[HamzaHajeir]

Hi

I'm building an entity for serializing/deserializing from/to multiple formats for unknown schemes, one of them is JSON.

Over deserialization, I want to detect whether a JsonVariant holds an array by calling:

    std::string data; // The data source
    DynamicJsonDocument doc(1024);
    deserializeJson(doc, data);
    JsonObject root = doc.as<JsonObject>();
    for (JsonPair kv : root){
        std::string out_single;
        std::vector<std::string> out_multiple;
        if (kv.value().getData()->isArray()) /* Append out_multiple by looping inside it */;
        else out_single = kv.value().as<std::string>(); // It's an element, just use this instruction to fetch it.
    }

However, I can't perform this operation due to getData() method being unaccessable.

How can I perform such target using ArduinoJson (I'm on v6, but assume the latest: v7).

With Thanks, Hamza Hajeir

[bblanchon]

kv.value().is<JsonArray>()

[HamzaHajeir]

kv.value().is<JsonArray>()

Great, and getting it as array would be kv.value().as<JsonArray>().

It'd be also great to add this to docs or examples ;)

[bblanchon]

The documentation already says that kv.value() is a JsonVariant. What else do you need, and on which page?

[HamzaHajeir]

It's obviously clear to people already familiar with the library's design.

But to my experience, I couldn't find the solution in docs nor examples. But I've just found it under API Reference looking for is<>(), well, I wasn't aware of it.

Hope it helps. Hamza

On Mon, May 13, 2024, 10:33 Benoît Blanchon @.***> wrote:

The documentation already says that kv.value() is a JsonVariant. What else do you need, and on which page?

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