Null values on swagger JSON file
I've spent a week on that and I found the solution only few hours after I posted my question, sorry for that.
It seems that in web.xml
was missing the io.swagger.jaxrs.listing.SwaggerSerializers
class in the ServletContainer, the full portion is:
<servlet>
<servlet-name>jersey</servlet-name>
<servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>jersey.config.server.provider.classnames</param-name>
<param-value>
io.swagger.jersey.listing.ApiListingResourceJSON,
io.swagger.jaxrs.listing.SwaggerSerializers,
org.something.DatasetApi
</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
With the io.swagger.jaxrs.listing.SwaggerSerializers
bit everything is now working as expected.
If using spring-boot, you can set in application.yml:
spring.jackson.default-property-inclusion: non_null