Is there any configuration available to speed up Flatten and Unflatten JSON?

[vsachinv]

We have pretty big JSON files which contains sometimes more than 180k nodes as well. We have done comparision with https://github.com/spring-projects/spring-vault/blob/main/spring-vault-core/src/main/java/org/springframework/vault/support/JsonMapFlattener.java api and found JSONFlattern is almost taking 5 times time. Is there any config available to speed up the same which can be tweaked and also Unfllatten is also taking alot time even after applying latest build.

[wnameless]

There is a main difference between json-flattener and Spring JsonMapFlattener. Spring JsonMapFlattener processes Java Map directly, but json-flattener does JSON processing at first. This difference results in performance comparison.

However json-flattener adopts json-base as implementation interfaces which supports org.json natively, therefore add org.json into your dependencies, then you can do something like this:

JsonFlattener jf = new JsonFlattener(new OrgJsonValue(new JSONObject(map)));

Because org.json uses most Java native objects internally, this approach should increase the performance you wish to gain.