How to customize spring boot XmlMapper when fields are effectively final to customize _xmlInputFactory?

[alexanderankin]

because spring boot does not give you access to customize the code: XmlMapper.builder(), i need to find another way to customize the xml input factory, either of these would work:

tools.jackson.databind.cfg.MapperBuilder: protected TokenStreamFactory _streamFactory; is effectively final - if i could update it, no problem

tools.jackson.dataformat.xml.XmlFactory#_xmlInputFactory - if it can be updated, no need to update the whole stream factory.

if there is no way to accomodate that here, ill try take it to the spring boot folks?

[pjfanning]

Spring provide APIs for controlling the ObjectMapper instances. They should provide similar APIs for XmlMapper or its builder. You should start with raising a Spring issue.

[alexanderankin]

they do, but it doesn't work for final fields. they provide ways of mutating MapperBuilder.

[pjfanning]

the builder is no different than the ObjectMapper one - that is the builder is provided the TokenStreamFactory at creation time and it can't be later changed - so how does Spring facilitate providing customised TokenStreamFactory (JsonFactory) for ObjectMapper builders?

[alexanderankin]

I think i got XmlFactory and XmlMapper confused. It does indeed offer a workaround for what i was trying to do.

https://github.com/spring-projects/spring-boot/blob/23bcc680d5c49b1eec85fb34d8cebb0c546ddabd/module/spring-boot-jackson/src/main/java/org/springframework/boot/jackson/autoconfigure/JacksonAutoConfiguration.java#L341-L370

[alexanderankin]

hah! i figured out my confusion - they fixed it but havent released it yet. they only decided to properly fix in january this year.

[cowtowncoder]

Ahhh. Glad you figured it out @alexanderankin .