Add Genson benchmarks

[m0mus]

The goal is to compare JSONB-RI with Jackson, Genson and Gson. Each benchmark test has to be created for all these frameworks with cold and warm engine. Cold means that the engine is created in the test and warm means that the engine creation and initialization is not a part of test.

This task is about adding Genson framework to the project and add Genson benchmarks for all current tests.

[pedes]

I would like to handle this task, and it would be great to have another task for the analysis/comparison with Jackson.

We could tackle the tasks, one by one. What does "engine" refers?

[m0mus]

"Engine" is a main class you call serialize and deserialize methods on. For JSON-B it's Jsonb class. The purpose of splitting to "cold" and "warm" is to know how long it takes to initialize the engine for this particular use case.

Here is a "cold" test:

JsonbConfig config = new JsonbConfig()
        .withFormatting(true)
        .withAdapters(new AnimalAdapter());
Jsonb jsonb = JsonbBuilder.create(config);

Type animalsListType = new ArrayList<Animal>() {}.getClass().getGenericSuperclass();
String result = jsonb.toJson(animals, animalsListType);

And the "warm" test is just this:

String result = jsonb.toJson(animals, animalsListType);