Jackson Release 2.12.2

Patch version of 2.12, under development as of January 2021.

Following fixes will be included.

Changes, core

Streaming

Databind

• #3022: Property ignorals cause BeanDeserializer to forget how to read from arrays (not copying _arrayDelegateDeserializer)
• #3025: UntypedObjectDeserializer mixes multiple unwrapped collections
• #3038: Two cases of incorrect error reporting about DeserializationFeature
• #3055: Polymorphic subtype deduction ignores defaultImpl attribute
• #3056: MismatchedInputException: Cannot deserialize instance of com.fasterxml.jackson.databind.node.ObjectNode out of VALUE_NULL token

Changes, data formats

CBOR

• #236: ArrayIndexOutOfBoundsException in CBORParser for invalid UTF-8 String
• #240: Handle invalid CBOR content like [ 0x84 ] (incomplete array)

Ion

• #241: Respect WRITE_ENUMS_USING_TO_STRING in EnumAsIonSymbolSerializer
• #242: Add support for generating IonSexps
• #244: Add support for deserializing IonTimestamps and IonBlobs

XML

• #445: XmlMapper/UntypedObjectDeserializer mixes multiple unwrapped collections
• #451: Xml type resolver fails with NPE when property name is not specified in polymorphic (de)serialization

Changes, datatypes

Java 8 date/time

• #202: Unable to deserialize YearMonth when running as java9 module, added with @JsonDeserialize annotation

Changes, JVM Languages

Kotlin

• #409: module-info.java missing "exports"