JsonSchemaGenerator to include min and max length of field in schema

[Naresh]

Hi ,

I'm generating JSON Schema from POJO. Currently, i see schema is generated without max and min length for String type. Is there any way to get length in generated JSON schema?

-Naresh Kumar

[Morten Kjetland]

Hi,

You can give https://github.com/mbknor/mbknor-jackson-jsonSchema a try.

-Morten

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[Tatu Saloranta]

+1 for trying that generator -- question of what to do with the
current generator (module under FasterXML) is still open with respect
to Jackson 3.
There are enough problems (f.ex only supporting schema spec v3; lack
of active maintainer) that I am contemplating deprecating it, as there
are better external packages available.

As to the original question: these lengths would need to be obtained
from somewhere, since Jackson itself does not handle validation.
I thing Bean Validation API has annotations but I don't know what
would be involved with piping, and how easy it would be to wire them
in,
if no support exists (I remember there being some support, just not
very extensive).
I would be open to PRs

-+ Tatu +-

ps. As always, make sure to run an up-to-date version -- 2.8.10 or
2.9.1 -- to see what does work already