Map to Json | Together Java | Page 1

mental trail Dec 17, 2022, 9:37 PM

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Hi guys don't you even know how i can convert the Map<?,?> to Json?
Map
{null={"player":{"name":"pepa","age":11,"op":false,"data":[10,100]}}, player={null={"name":"pepa","age":11,"op":false,"data":[10,100]}, age=11.0, data={null=[10,100], 1=10.0, 2=100.0, 3=20}, name=pepa, op=false}}

Expected json

{"player":{"name":"pepa","age":11,"op":false,"data":[10,100,20]}}

forest quartzBOT Dec 17, 2022, 9:37 PM

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<@&987246584574140416> please have a look, thanks.

forest quartzBOT Dec 17, 2022, 9:37 PM

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forest quartz <@&987246584574140416> please have a look, thanks.

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tough crystal Dec 17, 2022, 11:03 PM

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If you're trying to convert a Java object to JSON you will need to use a JSON library, I recommend GSON: https://github.com/google/gson.

In GSON turning a map to JSON is pretty simple:

Gson gsonObj = new Gson();
Map<String, String> jobs = new HashMap<String, String>();
inputMap.put("John", "Architect");
inputMap.put("Pam", "Doctor");
String jsonStr = gsonObj.toJson(inputMap);

forest quartzBOT Dec 17, 2022, 11:03 PM

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tough crystal If you're trying to convert a Java object to JSON you will need to use a JSON li...

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Formatted code

Gson gsonObj = new Gson();
Map<String, String> jobs = new HashMap<String, String>();
inputMap.put("John", "Architect");
inputMap.put("Pam", "Doctor");
String jsonStr = gsonObj.toJson(inputMap);

forest quartzBOT Dec 17, 2022, 11:04 PM

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forest quartz Detected code, here are some useful tools:

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neat patio Dec 17, 2022, 11:14 PM

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@mental trail hey! i know how

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though that null= is ..difficult

mental trail Dec 17, 2022, 11:14 PM

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neat patio <@433640611929784320> hey! i know how

yes.

neat patio Dec 17, 2022, 11:14 PM

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null is not a valid json key

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where do you have the Map<?, ?>?

mental trail Dec 17, 2022, 11:15 PM

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[00:13:52 INFO]:
[00:13:52 INFO]: {
[00:13:52 INFO]:   "another": [
[00:13:52 INFO]:     0.0
[00:13:52 INFO]:   ],
[00:13:52 INFO]:   "another2": {
[00:13:52 INFO]:     "b": 2.0
[00:13:52 INFO]:   },
[00:13:52 INFO]:   "player": {
[00:13:52 INFO]:     "age": 11.0,
[00:13:52 INFO]:     "data": {
[00:13:52 INFO]:       "1": 10.0,
[00:13:52 INFO]:       "2": 100.0,
[00:13:52 INFO]:       "3": 20,
[00:13:52 INFO]:       "4": 30
[00:13:52 INFO]:     },
[00:13:52 INFO]:     "name": "pepa",
[00:13:52 INFO]:     "op": false
[00:13:52 INFO]:   }
[00:13:52 INFO]: }

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this is my new output

mental trail Dec 17, 2022, 11:15 PM

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neat patio where do you have the `Map<?, ?>`?

array wont be converted right

neat patio Dec 17, 2022, 11:15 PM

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err

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not sure what you are asking

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how did you end up with a Map<?, ?>?

mental trail Dec 17, 2022, 11:18 PM

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DEBUG! Variable: {another={1=0.0}, another2={b=2.0}, player={age=11.0, data={1=10.0, 2=100.0, 3=20, 4=30}, name=pepa, op=false}}
DEBUG! OBJECT: {"another":[0.0],"another2":{"b":2.0},"player":{"age":11.0,"data":{"1":10.0,"2":100.0,"3":20,"4":30},"name":"pepa","op":false}}

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I'm still using it, but I fixed the null error. but now I can't convert the Array correctly.

neat patio Dec 17, 2022, 11:18 PM

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....

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okay again I ask you

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how did you end up with a map<?, ?>

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if you are following that gson snippet you can use a list for the data and it will work

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but

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how did you end up with a map<?, ?>

mental trail Dec 17, 2022, 11:31 PM

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I don't use the gson snippet at all, like I still have the code I sent, they just keep editing it, the current form is this.

        public static JsonElement listToJson(Event event, String name, boolean isLocal) {
            JsonElement json = null;

            Object next;
            Deque<Object> objects = new ArrayDeque<>();
            Map<String, Object> variable = (Map<String, Object>) getVariable(event, name + "*", isLocal);
            if (variable == null) return new JsonNull();
            JsonElement finalJson;

            SkriptGson.debug("&aVariable: &r"+variable);
            if (variable.keySet().stream().filter(Objects::nonNull).allMatch(Utils::isNumeric)) {
                finalJson = new JsonArray();
            } else {
                finalJson = new JsonObject();
            }


            objects.add(variable);

            while ((next = objects.pollFirst()) != null)
            {
                Stream<String> keys = ((Map<String, Object>) next).keySet().stream().filter(Objects::nonNull);
                Object finalNext = next;
                keys.forEach(key -> {
                    JsonElement element = hierarchyAdapter().toJsonTree(((Map<?, ?>) finalNext).get(key));

                    SkriptGson.debug("Key: "+key);
                    SkriptGson.debug("&aValue: "+element);

                    if (!(element instanceof JsonArray || element instanceof JsonObject))
                    {
                        if (finalJson.isJsonObject())
                        {
                            finalJson.getAsJsonObject().add(key, element);
                        } else if (finalJson.isJsonArray())
                        {
                            finalJson.getAsJsonArray().add(element);
                        }
                    }
                    else
                    {
                        if (finalJson.isJsonObject())
                        {
                            objects.offerLast(element.getAsJsonObject().asMap());
                        } else if (finalJson.isJsonArray())
                        {
                            objects.offerLast(element.getAsJsonArray().asList());
                        }
                    }
                });
            }
            System.out.println(finalJson);
            return null;
        }
    }

forest quartzBOT Dec 17, 2022, 11:31 PM

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mental trail I don't use the gson snippet at all, like I still have the code I sent, they jus...

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neat patio Dec 17, 2022, 11:38 PM

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okay

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what is this getVariable

mental trail Dec 17, 2022, 11:41 PM

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    public static Object getVariable(Event e, String name, boolean isLocal) {
        final Object variable = Variables.getVariable(name, e, isLocal);
        if (variable == null) {
            return Variables.getVariable((isLocal ? Variable.LOCAL_VARIABLE_TOKEN : "") + name, e, false);
        }
        return variable;
    }

forest quartzBOT Dec 17, 2022, 11:41 PM

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mental trail ```java public static Object getVariable(Event e, String name, boolean isLoc...

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mental trail Dec 17, 2022, 11:42 PM

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it's from a SkriptLang.

neat patio Dec 17, 2022, 11:42 PM

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gotcha

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so it represents lists as maps of numbers to items?

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thats cursed

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what java version are you using?

mental trail Dec 17, 2022, 11:44 PM

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16

neat patio Dec 17, 2022, 11:44 PM

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cool

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one second

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private static JsonElement skriptElementToJson(Object o) {
    if (o == null) {
        return new JsonNull();
    }
    else if (o instanceof Map<?, ?> map) {
        if (map.keySet().stream().filter(Objects::nonNull).allMatch(Utils::isNumeric)) {
            var array = new JsonArray();
            map.values().forEach(key -> {
                array.add(skriptElementToJson(map.get(key));
            });
            return array;
        }
        else {
            var object = new JsonObject();
            map.entrySet().forEach(entry -> {
                if (entry.getKey() instanceof String stringKey) {
                    object.add(stringKey, skriptElementToJson(entry.getValue());
                }
            });
            return object;
        }
    }
    else if (o instanceof List<?> list) {
        var array = new JsonArray();
        for (var item : list) {
            array.add(skriptElementToJson(item));
        }
        return array;
    }
    else if (o instanceof Number number) {
        // ...
    }
    else if (o instanceof String string) {
        // ...
    }
    else if (o instanceof Boolean bool) {
        // ...
    }
    
    throw new IllegalStateException("unhandled value type: " + o.getClass());
}

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so the difference here is instead of having a Deque you just have a recursive function

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and you can box up all the logic like this, basically

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so if you can fill in the blanks the rest of the code just looks like

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var variable = getVariable(event, name + "*", isLocal);
return skriptElementToJson(variable);

#Map to Json