Created CALCITE-7455 <https://issues.apache.org/jira/browse/CALCITE-7455>. Please feel free to share comments/suggestions.
Thank you, Danylo On Thu, 26 Mar 2026 at 17:59, Mihai Budiu <[email protected]> wrote: > I personally see no downside to your proposal. You should start by filing > a JIRA issue and asking for comments. > > Mihai > ------------------------------ > *From:* Danylo Naumenko via dev <[email protected]> > *Sent:* Thursday, March 26, 2026 1:14 AM > *To:* [email protected] <[email protected]> > *Cc:* Danylo Naumenko <[email protected]> > *Subject:* [PROPOSAL] Make ObjectMapper configurable in JSON functions > > Hi all, > > JsonFunctions currently uses a hardcoded JacksonJsonProvider with the > default ObjectMapper, so any Jackson module not registered by default is > unavailable. For example, passing a Java object with Optional fields to > JSON_OBJECT fails since serialization of Optional fields is not enabled by > default. Registering Jdk8Module on the ObjectMapper fixes this, but it > looks like there's no way to do that today. > > Looking at this more generally is there currently a way to configure > a custom ObjectMapper? If not, would it make sense to allow configuring the > ObjectMapper used by JSON functions? > > If the proposal makes sense, would you accept a contribution to enable > this? If so, do you have any preference/guidance on how the solution should > look like? > > Best regards, > Danylo >
