Question about create a Java POJO with an anonymous object

[Deceptio]

I have this json

[
2308,
{
    "a": [
        "1958.38000",
        2,
        "2.05000000"
    ],
    "b": [
        "1957.81000",
        3,
        "3.95000000"
    ],
    "c": [
        "1957.32000",
        "0.55407557"
    ],
    "v": [
        "1422.39220916",
        "1524.19647295"
    ],
    "p": [
        "1959.08106",
        "1960.58108"
    ],
    "t": [
        1671,
        1949
    ],
    "l": [
        "1914.37000",
        "1914.37000"
    ],
    "h": [
        "1991.81000",
        "2004.15000"
    ],
    "o": [
        "1975.90000",
        "1997.23000"
    ]
},
"type",
"XCT"
]

The problem is that the values are anonymous. How can I deserialize this String with the dsljson Framework? I don't know how to describe an anonymous values. And to deserialize without a POJO is not working either.

What is the correct way to deserialize this JSON?

import java.util.Map;
public class TestDSL {
    public static void main(String[] args) throws IOException {

        byte[] jsonObject = "[2308,{\"a\":[\"1958.38000\",2,\"2.05000000\"],\"b\":[\"1957.81000\",3,\"3.95000000\"],\"c\":[\"1957.32000\",\"0.55407557\"],\"v\":[\"1422.39220916\",\"1524.19647295\"],\"p\":[\"1959.08106\",\"1960.58108\"],\"t\":[1671,1949],\"l\":[\"1914.37000\",\"1914.37000\"],\"h\":[\"1991.81000\",\"2004.15000\"],\"o\":[\"1975.90000\",\"1997.23000\"]},\"ticker\",\"ETH/USDT\"]".getBytes();
        DslJson<Object> dslJson = new DslJson<>();
        dslJson.deserialize(Map.class,jsonObject,jsonObject.length );
    }

[zapov]

Hi,

I would assume deserialize Object.class or deserializeList of Object should give you what you want. This is a JSON Array, so you can't convert it into a map, only into a collection

[Deceptio]

Hi

Thank you for your answer What do you mean with "I would assume deserialize Object.class or deserializeList of Object should give you what you want." Can you please show a short Java example`?

[zapov]

If you don't know the schema upfront, you can ask for unknown object type via Object.class There is relevant example here: https://github.com/ngs-doo/dsl-json/blob/b7d8795a405dc7faeb2a1b4699497ab628cfcd08/tests-java8/src/test/java/com/dslplatform/json/OnUnknownTest.java#L109

But basically both

		Object res = dslUnknown.deserialize(Object.class, input, input.length);
		List<Object> col = dslUnknown.deserializeList(Object.class, input, input.length);

Should give you what you want as long as you setup dslUnknown to support such deserialization (which is not a recommended thing)

[Deceptio]

Thank you, very kind of you.

Ok this one works:

                new DslJson.Settings<>()
                        .resolveReader(Settings.UNKNOWN_READER)
                        .resolveWriter(Settings.UNKNOWN_WRITER)
                        .includeServiceLoader());
        ArrayList um1 = (ArrayList) dslUnknown.deserialize(Object.class, jsonObject, jsonObject.length);

Now I have to use this example dsl-json/tests-java8/src/test/java/com/dslplatform/json/OnUnknownTest.java to create a POJO? Or is it not possibible to create a POJO for this JSON?

[zapov]

It certainly is. There are various examples on how to do it.