Map numeric data value in Object type to proper data type instead of GSON's default double data type

[madhavjha-git]

Is your feature request related to a problem? Please describe.
GSON by default maps any numeric value defined in Object type to Double.
Same problem is inherited by Javers as it uses GSON under the hood.

GSON provided the solution for it long back. Javers should adopt it for better results with shadow api.
google/gson#1290

Example:

class TypeValue{
    Integer id;
    Object value;
}

Json:
var jsonStr="{\n" +
" "id":1,\n" +
" "value":9999999999\n" +
" }";

Result without setObjectToNumberStrategy(ToNumberPolicy.LONG_OR_DOUBLE)

        Gson gson= new GsonBuilder()
               // .setObjectToNumberStrategy(ToNumberPolicy.LONG_OR_DOUBLE)
                .create();
        var json=gson.fromJson(jsonStr,TypeValue.class);

{
"id": 1,
"value": 9.999999999E9
}

Result with setObjectToNumberStrategy(ToNumberPolicy.LONG_OR_DOUBLE)

        Gson gson= new GsonBuilder()
                .setObjectToNumberStrategy(ToNumberPolicy.LONG_OR_DOUBLE)
                .create();
      var json=gson.fromJson(jsonStr,TypeValue.class);

{
"id": 1,
"value": 9999999999
}

Describe the solution you'd like
A clear and concise description of what you want to happen.
Adding this should solve it.

public JsonConverterBuilder() {
    this.gsonBuilder = new GsonBuilder();
    this.gsonBuilder.setExclusionStrategies(new SkipFieldExclusionStrategy());

  this.gsonBuilder.setObjectToNumberStrategy(ToNumberPolicy.LONG_OR_DOUBLE);

    registerBuiltInAdapters(Java8TypeAdapters.adapters());
    registerBuiltInAdapters((List)UtilTypeCoreAdapters.adapters());
    registerJsonAdvancedTypeAdapter(new OptionalTypeAdapter());
}

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.

[bartoszwalacik]

Hi @madhavjha-git, feel free to contribute a PR

[madhavjha-git]

Hi @bartoszwalacik raised PR #1280 for the same.

[bartoszwalacik]

released in 6.13.0, @madhavjha-git thanks for your high quality contribution