Jackson Release 2.12.1

Patch version of 2.12, being developed as of December 2020.

Following fixes will be included.

Changes, core

Streaming

Databind

• #2962: Auto-detection of constructor-based creator method skipped if there is an annotated factory-based creator method (regression from 2.11)
• #2972: ObjectMapper.treeToValue() no longer invokes JsonDeserializer.getNullValue()
• #2973: DeserializationProblemHandler is not invoked when trying to deserializing String

Changes, data formats

Ion

• #282: Allow disabling native type ids in IonMapper

XML

• #435: After upgrade to 2.12.0, NPE when deserializing an empty element to ArrayList

Changes, JVM Languages

Kotlin