release-notes/VERSION

Project: jackson-databind

------------------------------------------------------------------------
=== Releases ===
------------------------------------------------------------------------

2.5.0 (not yet released)

#47: Support `@JsonValue` for (Map) key serialization 
#113: Problem deserializing polymorphic types with @JsonCreator
#408: External type id does not allow use of 'visible=true'
#421: @JsonCreator not used in case of multiple creators with parameter names
 (reported by Lovro P, lpandzic@github)
#427: Make array and Collection serializers call `JsonGenerator.writeStartArray(int)`
#521: Keep bundle annotations, prevent problems with recursive annotation types
 (reported by tea-dragon@github)
#527: Add support for `@JsonInclude(content=Include.NON_NULL)` (and others) for Maps
#528: Add support for `JsonType.As.EXISTING_PROPERTY`
 (reported by heapifyman@github; implemented by fleebytes@github)
#539: Problem with post-procesing of "empty bean" serializer; was not calling
  'BeanSerializerModifier.modifySerializer()` for empty beans
 (reported by Fabien R, fabienrenaud@github)
#540: Support deserializing `[]` as null or empty collection when the java type is a not an object
 (requested by Fabien R, fabienrenaud@github)
#543: Problem resolving self-referential recursive types
 (reported by ahgittin@github)
#550: Minor optimization: prune introspection of "well-known" JDK types
#552: Improved handling for ISO-8601 (date) format
 (contributed by Jerome G, geronimo-iia@github)
#559: Add `getDateFormat()`, `getPropertyNamingStrategy()` in `ObjectMapper`
#560: @JsonCreator to deserialize BigInteger to Enum
 (requested by gisupp@github)
#565: Add support for handling `Map.Entry`
#566: Add support for case-insensitive deserialization (`MapperFeature.ACCEPT_CASE_INSENSITIVE_PROPERTIES`)
 (contributed by Michael R)
#571: Add support in ObjectMapper for custom `ObjectReader`, `ObjectWriter` (sub-classes)
#572: Override default serialization of Enums
 (requested by herau@github)
#576: Add fluent API for adding mixins
 (contributed by Adam S, adstro@github)
#597: Improve error messaging for cases where JSON Creator returns null (which
  is illegal)
 (contributed by Aurelien L)
#599: Add a simple mechanism for avoiding multiple registrations of the same module
#607: Allow (re)config of `JsonParser.Feature`s via `ObjectReader`
#608: Allow (re)config of `JsonGenerator.Feature`s via `ObjectWriter`
#614: Add a mechanism for using `@JsonCreator.mode` for resolving possible ambiguity between
  delegating- and property-based creators
#616: Add `SerializationFeature.WRITE_DURATIONS_AS_TIMESTAMPS`
#622: Support for non-scalar ObjectId Reference deserialiazation (like JSOG)
#623: Add `StdNodeBasedDeserializer`
#630: Add `KeyDeserializer` for `Class`
#631: Update `current value` of `JsonParser`, `JsonGenerator` from standard serializers,
 deserializers
 (suggested by Antibrumm@github)
#633: Allow returning null value from IdResolver to make type information optional
 (requested by Antibrumm@github)
#634: Add `typeFromId(DatabindContext,String)` in `TypeIdDeserializer`
#636: `ClassNotFoundException` for classes not (yet) needed during serialization
 (contributed by mspiegel@github)
#638: Add annotation-based method(s) for injecting properties during serialization
 (using @JsonAppend, VirtualBeanPropertyWriter)
#647: Deserialization fails when @JsonUnwrapped property contains an object with same property name
 (reported by Konstantin L)
#654: Add support for (re)configuring `JsonGenerator.setRootValueSeparator()` via `ObjectWriter`
#655: Add `ObjectWriter.writeValues()` for writing value sequences
- Allow use of `Shape.ARRAY` for Enums, as an alias to 'use index'
- Start using `JsonGenerator.writeStartArray(int)` to help data formats
  that benefit from knowing number of elements in arrays (and would otherwise
  need to buffer values to know length)
- Added new overload for `JsonSerializer.isEmpty()`, to eventually solve #588

2.4.5 (not yet released)

#635: Reduce cachability of `Map` deserializers, to avoid problems with per-property config changes
    (regression due to #604)
#656: `defaultImpl` configuration is ignored for `WRAPPER_OBJECT`
- Solve potential cyclic-resolution problem for `UntypedObjectDeserializer`

2.4.4 (24-Nov-2014)

(jackson-core)#158: Setter confusion on assignable types
 (reported by tsquared2763@github)
#245: Calls to ObjectMapper.addMixInAnnotations() on an instance returned by ObjectMapper.copy()
 don't work
 (reported by Erik D)
#580: delegate deserializers choke on a (single) abstract/polymorphic parameter
 (reported by Ian B, tea-dragon@github)
#590: Binding invalid Currency gives nonsense at end of the message
 (reported by Jerbell@github)
#592: Wrong `TokenBuffer` delegate deserialization using `@JsonCreator`
 (reported by Eugene L)
#601: ClassCastException for a custom serializer for enum key in `EnumMap`
 (reported by Benson M)
#604: `Map` deserializers not being cached, causing performance problems
#610: Fix forward reference in hierarchies
 (contributed by zeito@github)
#619: Off by one error in AnnotatedWithParams
 (reported by stevetodd@github)
- Minor fix to `EnumSerializer` regarding detection "serialize using index"
- Minor fix to number serializers, to call proper callback for schema generation

2.4.3 (02-Oct-2014)

#496: Wrong result with `new TextNode("false").asBoolean(true)`
 (reported by Ivar R, ivarru@github)
#511: DeserializationFeature.FAIL_ON_INVALID_SUBTYPE does not work
 (reported by sbelikov@github)
#523: MapDeserializer and friends do not report the field/key name for mapping exceptions
 (reported by Ian B, tea-dragon@github)
#524: @JsonIdentityReference(alwaysAsId = true) Custom resolver is reset to SimpleObjectIdResolver
 (reported by pkokorev@github)
#541: @JsonProperty in @JsonCreator is conflicting with POJOs getters/attributes
 (reported by fabienrenaud@github)
#543: Problem resolving self-referential generic types
#570: Add Support for Parsing All Compliant ISO-8601 Date Formats
 (requested by pfconrey@github)
- Fixed a problem with `acceptJsonFormatVisitor` with Collection/array types that
  are marked with `@JsonValue`; could cause NPE in JSON Schema generator module.

2.4.2 (14-Aug-2014)

#515: Mixin annotations lost when using a mixin class hierarchy with non-mixin interfaces
 (reported by 'stevebread@github')
- Fixed a problem related to [jackson-dataformat-smile#19].

2.4.1.2 (12-Jul-2014)

Special one-off "micro patch" for:

#503: Concurrency issue inside com.fasterxml.jackson.databind.util.LRUMap.get(Object)
 (reported by fjtc@github)

2.4.1.1 (18-Jun-2014)

Special one-off "micro patch" for:

#491: Temporary work-around for issue #490 (full fix for 2.5 needs to be
  in `jackson-annotations`)
#506: Index is never set for Collection and Array in InvalidFormatException.Reference
 (reported by Fabrice D, fabdouglas@github)
- Fixed a problem related to [jackson-dataformat-smile#19].

2.4.1 (17-Jun-2014)

#479: NPE on trying to deserialize a `String[]` that contains null
 (reported by huxi@github)
#482: Make date parsing error behavior consistent with JDK
 (suggested by Steve S, sanbeg@github)
#489 (partial): TypeFactory cache prevents garbage collection of custom ClassLoader
 (reported by sftwrengnr@github)

2.4.0 (02-Jun-2014)

#81: Allow use of @JsonUnwrapped with typed (@JsonTypeInfo) classes, provided
  that (new) feature `SerializationFeature.FAIL_ON_UNWRAPPED_TYPE_IDENTIFIERS`
  is disabled
 (constributed by Ben F, UnquietCode@github)
#88: Prevent use of type information for `JsonNode` via default typing
 (reported by electricmonk@github)
#149: Allow use of "stringified" indexes for Enum values
 (requested by chenboxiang@github)
#176: Allow use external Object Id resolver (to use with @JsonIdentityInfo etc)
 (implemented by Pascal G)
#193: Conflicting property name definitions
 (reported by Stuart J, sgjohnston@github)
#323: Serialization of the field with deserialization config
 (reported by metanet@github)
#327: Should not consider explicitly differing renames a fail, as long as all are explicit
#335: Allow use of `@JsonPropertyOrder(alphabetic=true)` for Map properties
#352 Add `ObjectMapper.setConfig()` for overriding `SerializationConfig`/`DeserializationConfig`
#353: Problems with polymorphic types, `JsonNode` (related to #88)
 (reported by cemo@github)
#359: Converted object not using explicitly annotated serializer
 (reported by Florian S [fschopp@github])
#369: Incorrect comparison for renaming in `POJOPropertyBuilder`
#375: Add `readValue()`/`readPropertyValue()` methods in `DeserializationContext`
#376: Add support for `@JsonFormat(shape=STRING)` for number serializers
#381: Allow inlining/unwrapping of value from single-component JSON array
 (contributed by yinzara@github)
#390: Change order in which managed/back references are resolved (now back-ref
 first, then forward)
 (requested by zAlbee@github)
#407: Properly use null handlers for value types when serializer Collection
 and array types
 (contributed by Will P)
#425: Add support for using `Void.class` as "no class", instead of `NoClass.class`
#428: `PropertyNamingStrategy` will rename even explicit name from `@JsonProperty`
 (reported by turskip@github)
#435: Performance bottleneck in TypeFactory._fromClass
 (reported by Sean D, sdonovanuk@github)
#434: Ensure that DecimalNodes with mathematically equal values are equal
 (contributed by Francis G)
#435: Performance bottleneck in TypeFactory._fromClass
 (reported by sdonovanuk@github)
#438: Add support for accessing `@JsonProperty(index=N)` annotations
#442: Make `@JsonUnwrapped` indicate property inclusion
 (suggested by Ben F)
#447: ArrayNode#addAll should accept Collection<? extends JsonNode>
 (suggested by alias@github)
#461: Add new standard naming strategy, `PropertyNamingStrategy.LowerCaseStrategy`
#463: Add 'JsonNode.asText(String defaultValue)`
 (suggested by Chris C)
#464: Include `JsonLocation` in more mapping exceptions
 (contributed by Andy C (q3aiml@github))
#465: Make it easier to support serialization of custom subtypes of `Number`
#467: Unwanted POJO's embedded in tree via serialization to tree
 (reported by Benson M)
- Slightly improve `SqlDateSerializer` to support `@JsonFormat`
- Improve handling of native type ids (YAML, CBOR) to use non-native type ids
  as fallback

2.3.4 (17-Jul-2014)

#459: BeanDeserializerBuilder copy constructor not copying `_injectables`
#462: Annotation-provided Deserializers are not contextualized inside CreatorProperties
 (reported by aarondav@github)

2.3.3 (10-Apr-2014)

#420: Remove 'final' modifier from `BeanDeserializerBase.deserializeWithType`
 (requested by Ghoughpteighbteau@github)
#422: Allow use of "True" and "False" as aliases for booleans when coercing from
  JSON String
#423: Fix `CalendarSerializer` to work with custom format
 (reported by sergeymetallic@github)
#433: `ObjectMapper`'s `.valueToTree()` wraps `JsonSerializable` objects into a POJONode
 (reported by Francis G)
- Fix null-handling for `CollectionSerializer`

2.3.2 (01-Mar-2014)

#378: Fix a problem with custom enum deserializer construction
 (reported by BokoEnos@github)
#379: Fix a problem with (re)naming of Creator properties; needed to make
 Paranamer module work with NamingStrategy.
 (reported by Chris P, cpilsworth@github)
#398: Should deserialize empty (not null) URI from empty String
 (reported by pgieser@github)
#406: @JsonTypeIdResolver not working with external type ids
 (reported by Martin T)
#411: NumberDeserializers throws exception with NaN and +/- Infinity
 (reported by clarkbreyman@github)
#412: ObjectMapper.writerWithType() does not change root name being used
 (repoted by jhalterman@github)
- Added `BeanSerializerBase._serializeObjectId()` needed by modules that
  override standard BeanSerializer; specifically, XML module.

2.3.1 (28-Dec-2013)

#346: Fix problem deserializing `ObjectNode`, with @JsonCreator, empty
  JSON Object
 (reported by gaff78@github)
#358: `IterableSerializer` ignoring annotated content serializer
 (reported by Florian S)
#361: Reduce sync overhead for SerializerCache by using volatile, double-locking
 (contributed by stuartwdouglas@github)
#362: UUID output as Base64 String with ObjectMapper.convertValue()
 (reported by jknack@github)
#367: Make `TypeNameIdResolver` call `TypeResolver` for resolving base type
 (suggested by Ben F)
#370: Fail to add Object Id for POJO with no properties
 (reported by jh3141@github)
- Fix for [jackson-module-afterburner#38]: need to remove @JacksonStdImpl from
  `RawSerializer`, to avoid accidental removal of proper handling.

2.3.0 (13-Nov-2013)

#48: Add support for `InetSocketAddress`
 (contributed by Nick T)
#152: Add support for traversing `JsonNode` with (new!) `JsonPointer` implementation
 (suggested by fge@github)
#208: Accept "fromString()" as an implicit Creator (factory) method (alias for "valueOf()")
 (requested by David P)
#215: Allow registering custom `CharacterEscapes` to use for serialization,
 via `ObjectWriter.with(CharacterEscapes)` (and `ObjectMapper.writer(CharacterEscapes)`)
#227: Allow "generic" Enum serializers, deserializers, via `SimpleModule`
#234: Incorrect type information for deeply nested Maps
 (reported by Andrei P)
#237: Add `DeserializationFeature.FAIL_ON_READING_DUP_TREE_KEY` to optionally
  throw `JsonMappingException` on duplicate keys, tree model (`JsonNode`)
#238: Allow existence of overlapping getter, is-getter (choose 'regular' getter)
#239: Support `ByteBuffer`
 (suggested by mckamey@github)
#240: Make sure `@JsonSerialize.include` does not accidentally override
  class inclusion settings
 (requested by thierryhenrio@github)
#253: `DelegatingDeserializer` causes problems for Managed/BackReferences
 (reported by bfelaco@github)
#257: Make `UntypedObjectDeserializer` support overides for `List`, `Map` etc
#268: Add new variant of `ObjectMapper.canSerialize()` that can return `Throwable`
 that caused false to be returned (if any)
#269: Add support for new `@JsonPropertyDescription` via `AnnotationIntrospector`
 as well as `BeanProperty.getMedata().getDescription()`
#270: Add `SerializationFeature.USE_EQUALITY_FOR_OBJECT_ID` to allow use of equality
 (instead of identity) for figuring out when to use Object Id
 (requested by beku8@github)
#271: Support handling of `@JsonUnwrapped` for in-built JSON Schema generation
#277: Make `TokenBuffer` support new native type and object ids
#302: Add `setNamingStrategy` in `Module.SetupContext`
 (suggested by Miguel C)
#305: Add support for accessing `TypeFactory` via `TypeIdResolverBase`
 (not yet via `TypeIdResolver` interface), other configuration
#306: Allow use of `@JsonFilter` for properties, not just classes 
#307: Allow use of `@JsonFilter` for Maps in addition to POJOs
#308: Improve serialization and deserialization speed of `java.util.UUID` by 4x
 (suggested by David P)
#310: Improve `java.util.UUID` serialization with binary codecs, to use "raw" form.
#311: Make sure that "creator properties" are alphabetically ordered too, if
  so requested.
#315: Allow per-property definition of null serializer to use, using
 new `@JsonSerialize(nullsUsing=xxx)` annotation property
#317: Fix `JsonNode` support for nulls bound to `ObjectNode`, `ArrayNode`
 (contributed by Seth P)
#318: Problems with `ObjectMapper.updateValue()`, creator property-backed accessors
#319: Add support for per-call ("contextual") attributes, with defaulting,
 to allow keeping track of state during (de)serialization
#324: Make sure to throw `JsonMappingException` from `EnumDeserializer` creator,
  not `IllegalArgumentException`
 (reported by beverku@github)
#326: Support `@JsonFilter` for "any getter" properties
#334: Make `ArrayNode`, `ObjectNode` non-final again
#337: `AnySetter` does not support polymorphic types
 (reported by askvortsov@github)
#340: AtomicReference not working with polymorphic types
#342: Add `DeserializationFeature.FAIL_ON_IGNORED_PROPERTIES` to make `ObjectMapper`
  throw exception when encountering explicitly ignored properties
 (requested by Ruslan M)
[JACKSON-890]: Support managed/back-references for polymorphic (abstract) types
- Add 'BeanPropertyWriter.isUnwrapping()' for future needs (by Afterburner)
- Add coercions from String "null" (as if null token was parsed) for primitives/Wrappers.
- Add `JsonDeserializer.handledType()`

2.2.4 (10-Jun-2014)

#292: Problems with abstract `Map`s, `Collection`s, polymorphic deserialization
#324: EnumDeserializer should throw JsonMappingException, not IllegalArgumentException
#346: Problems deserializing `ObjectNode` from empty JSON Object, with @JsonCreator

2.2.3 (22-Aug-2013)

#234: Problems with serializing types for deeply nested generic Maps, default typing 
#251: SerializationFeature.WRITE_BIGDECIMAL_AS_PLAIN ignored with JsonNode
  serialization
 (reported by fge@github)
#259: Fix a problem with JSON Schema generation for `@JsonValue`
 (reported by Lior L)
#267: Handle negative, stringified timestamps
 (reported by Drecth@github)
#281: Make `NullNode` use configured null-value serializer
#287: Fix problems with converters, Maps with Object values
 (reported by antubis@github)
#288: Fix problem with serialization converters assigned with annotations
 (reported by cemo@github)

2.2.2 (26-May-2013)

#216: Problems with Android, 1.6-only types
#217: JsonProcessingExceptions not all wrapped as expected
 (reported by karldmoore@github)
#220: ContainerNode missing 'createNumber(BigInteger)'
 (reported by Pascal G)
#223: Duplicated nulls with @JsonFormat(shape=Shape.ARRAY)
 (reported by lukegh@github)
#226: Field mapping fail on deserialization to common referenced object when
  @JsonUnwrapped is used
 (reported by ikvia@github)
#232: Converting bound BigDecimal value to tree fails with WRITE_BIGDECIMAL_AS_PLAIN
 (reported by celkings@github)
- Minor fix to handle primitive types for key deserializer lookups
- Add convenience method `MappingIterator.getCurrentLocation()`
 (suggested by Tomdz@github)

2.2.1 (03-May-2013)

#214: Problem with LICENSE, NOTICE, Android packaging
 (reported by thierryd@github)

2.2.0 (22-Apr-2013)

Fixes:

#23: Fixing typing of root-level collections
#118: JsonTypeInfo.as.EXTERNAL_PROPERTY not working correctly
 with missing type id, scalar types
#130: TimeZone not set for GregorianCalendar, even if configured
#144: MissingNode.isValueNode() should return 'false'
 (reported by 'fge@github')
#146: Creator properties were not being renamed as expected
 (contributed by Christoper C)
#188: Problem with ObjectId serialization, 'alwaysAsId' references

Improvements:

#116: JavaType implements `java.lang.reflect.Type` (as does `TypeReference`)
#147: Defer reporting of problems with missing creator parameters
 (contributed by Christoper C)
#155: Make `ObjectNode` and `ArrayNode` final (other node types already were)
 (requested by fge@github)
#161: Add deserializer for java.util.concurrent.ArrayBlockingQueue
#173: Add 'JsonNode.traverse(ObjectCodec)' for convenience
#181: Improve error reporting for missing '_valueDeserializer'
#194: Add `FloatNode` type in tree model (JsonNode)
 (requested by msteiger@github)
#199: Allow deserializing `Iterable` instances (as basic `Collection`s)
 (requested by electrum@github)
#206: Make 'ObjectMapper.createDeserializationContext()' overridable
 (requested by noter@github)
#207: Add explicit support for `short` datatypes, for tree model
 (contributed by msteiger@github)

New features:

#120: Extend BeanDeserializerModifier to work with non-POJO deserializers
#121: Extend BeanSerializerModifier to work with non-POJO serializers
#124: Add support for serialization converters (@JsonSerializer(converter=...))
#124: Add support for deserialization converters (@JsonDeserializer(converter=...))
#140: Add 'SerializationFeature.WRITE_BIGDECIMAL_AS_PLAIN' to allow forcing
  of non-scientific notation when serializing BigDecimals.
 (suggested by phedny@github)
#148: Add 'DeserializationFeature.FAIL_ON_INVALID_SUBTYPE`, which allows mapping
  entries with missing or invalid type id into null references (instead of failing).
  Also allows use of '@JsonTypeInfo.defaultImpl = NoClass.class' as alternative.
#159: Add more accessors in 'MappingIterator': getParser(), getParserSchema(),
  readAll()
 (suggested by Tom D)
#190: Add 'MapperFeature.ALLOW_FINAL_FIELDS_AS_MUTATORS' (default: true) for
 pruning out final fields (to avoid using as mutators)
 (requested by Eric T)
#195: Add 'MapperFeature.INFER_PROPERTY_MUTATORS' (default: enabled) for finer
  control of what mutators are auto-detected.
 (requested by Dain S)
#198: Add SPI metadata, handling in ObjectMapper (findModules()), for
  automatic registration of auto-detected extension modules
 (suggested by 'beamerblvd@github')
#203: Added new features to support advanced date/time handling:
  - SerializationFeature.WRITE_DATE_TIMESTAMPS_AS_NANOSECONDS
  - DeserializationFeature.READ_DATE_TIMESTAMPS_AS_NANOSECONDS
  - DeserializationFeature.ADJUST_DATES_TO_CONTEXT_TIME_ZONE

Other:

#126: Update JDK baseline to 1.6
* API under 'com.fasterxml.jackson.databind.jsonFormatVisitors' changed significantly
  based on experiences with external JSON Schema generator.
* Version information accessed via code-generated access class, instead of reading
  VERSION.txt
* Added 2 methods in Converter interface: getInputType(), getOutputType(),
  to allow programmatic overrides (needed by JAXB annotation module)

2.1.4 (26-Feb-2013)

* [JACKSON-887]: StackOverflow with parameterized sub-class field
 (reported by Alexander M)
* [#130]: TimeZone not set for GregorianCalendar, when deserializing
* [#157]: NPE when registering module twice
* [#162]: JsonNodeFactory: work around an old bug with BigDecimal and zero
 (submitted by fge@github)
* [#166]: Incorrect optimization for `ObjectMapper.convertValue(Class)`
 (reported by Eric T)
* [#167]: Problems with @JsonValue, polymorphic types (regression from 1.x)
 (reported by Eric T)
* [#170]: Problems deserializing `java.io.File` if creator auto-discovery disabled
 (reported by Eric T)
* [#175]: NPE for JsonMappingException, if no path is specified
 (reported by bramp@github)

2.1.3 (19-Jan-2013)

* [Issue#141]: ACCEPT_EMPTY_STRING_AS_NULL_OBJECT not working for enums
* [Issue#142]: Serialization of class containing EnumMap with polymorphic enum
  fails to generate class type data
 (reported by kidavis4@github)

2.1.2 (04-Dec-2012)

* [Issue#106]: NPE in ObjectArraySerializer.createContextual(...)
* [Issue#117]: HandlerInstantiator defaulting not working
 (reported by Alexander B)
* [Issue#118]: Problems with JsonTypeInfo.As.EXTERNAL_PROPERTY, scalar values
 (reported by Adva11@github)
* [Issue#119]: Problems with @JsonValue, JsonTypeInfo.As.EXTERNAL_PROPERTY
 (reported by Adva11@github)
* [Issue#122]: ObjectMapper.copy() was not copying underlying mix-in map
 (reported by rzlo@github)

2.1.1 (11-Nov-2012)

Fixes:

* [JACKSON-875]: Enum values not found if Feature.USE_ANNOTATIONS disabled
 (reported by Laurent P)
* [Issue#93]: ObjectNode.setAll() broken; would not add anything for
  empty ObjectNodes.
 (reported by Francis G)
* Making things implement java.io.Serializable:
  - Issues: #94, #99, #100, #102
    (reported by Sean B)
* [Issue#96]: Problem with JsonTypeInfo.As.EXTERNAL_PROPERTY, defaultImpl
 (reported by Adva11@github)

2.1.0 (08-Oct-2012)

  New minor version for 2.x series. Major improvements in multiple areas,
  including:

  - Dataformat auto-detection
  - More `@JsonFormat.shape` variant to serialize Collections as
    JSON Objects, POJOs as JSON Arrays (csv-like).
  - Much more configuration accessible via ObjectReader, ObjectWriter
  - New mechanism for JSON Schema generation, other uses (in future)

Fixes:

* [JACKSON-830]/[Issue#19]: Change OSGi bundle name to be fully-qualified
* ]JACKSON-847]: Make @JsonIdentityInfo work with property-based creator
* [JACKSON-851]: State corruption with ObjectWriter, DefaultPrettyPrinter
 (reported by Duncan A)
* [Issue#75]: Too aggressive KeySerializer caching
* Minor fix wrt [Issue#11], coercion needed extra checks

Improvements:

* [JACKSON-758]: Remove 'IOException' from throws clauses of "writeValueAsString"
  and "writeValueAsBytes" of ObjectMapper/ObjectWriter
 (suggested by G-T Chen)
* [JACKSON-839]: Allow "upgrade" of integer number types for
  UntypedObjectDeserializer, even with default typing enabled.
* [JACKSON-850]: Allow use of zero-arg factory methods as "default creator"
  (suggested by Razvan D)
* [Issue#9]: Implement 'required' JSON Schema attribute for bean properties
* [Issue#20]: Add new exception type, InvalidFormatException (sub-type of
  JsonMappingException) to indicate data format problems
 (suggested by HolySamosa@github)
* [Issue#30]: ObjectReader and ObjectWriter now try to pre-fetch root
  (de)serializer if possible; minor performance improvement (2% for small POJOs).
* [Issue#33]: Simplified/clarified definition of 'ObjectReader.readValues()';
  minor change in behavior for JSON Array "wrapped" sequences
* [Issue#60]: Add 'JsonNode.hasNonNull(...)' method(s)
 (suggested by Jeff S on mailing list) 
* [Issue#64]: Add new "standard" PropertyNamingStrategy, PascalCaseStrategy
  (PropertyNamingStrategy.PASCAL_CASE_TO_CAMEL_CASE)
 (contributed by Sean B)
* [Issue#65]: Add getters to `ObjectMapper`, DeserializationContext/-Factory.
 (contributed by Dmitry K)
* [Issue#69]: Add `PropertyName` abstraction, new methods in AnnotationIntrospector
* [Issue#80]: Make `DecimalNode` normalize input, to make "1.0" and "1.00"equal
 (reported by fge@github)

New features:

* [Issue#15]: Support data format auto-detection via ObjectReader (added
  'withFormatDetection(...)' fluent factories)
* [Issue#21]: Add 'ObjectNode.set(...)' method (and related) to improve
  chaining, semantic consistency of Tree Model API
 (suggested by fge@Github)
* [Issue#22]: Add 'ObjectMapper.setAnnotationIntrospectors()' which allows
  defining different introspectors for serialization, deserialization
* [Issue#24]: Allow serialization of Enums as JSON Objects
 (suggested by rveloso@github)
* [Issue#28]: Add 'ObjectMapper.copy()', to create non-linked copy of
  mapper, with same configuration settings
* [Issue#29]: Allow serializing, deserializing POJOs as JSON Arrays
  by using `@JsonFormat(shape=Shape.ARRAY)`
* [Issue#40]: Allow serialization of Collections as JSON Objects
  (and deserialization from)
 (suggested by 'rveloso@github')
* [Issue#42]: Allow specifying Base64 variant to use for Base64-encoded data
  using ObjectReader.with(Base64Variant), ObjectWriter.with(Base64Variant).
 (suggested by 'mpfau@github')
* [Issue#45]: Add '@JsonNaming' annotation to define per-class PropertyNamingStrategy
 (suggested by Mark W)
* [Pull#58]: Make 'MappingIterator' implement 'Closable'
 (contributed by Pascal G)
* [Issue#72]: Add 'MapperFeature.USE_WRAPPER_NAME_AS_PROPERTY_NAME' to use
  wrapper name annotations for renaming properties
* [Issue#87]: Add 'StdDelegatingSerializer', 'StdDelegatingDeserializer' to
  simplify writing of two-step handlers
* (issue #4 of jackson-annotations): Add `@JsonIdentityReference(alwaysAsId=true)`
  to force ALL references to an object written as Object Id, even the first one.
* Added 'ObjectReader#withHandler' to allow for reconfiguring deserialization
  problem handler
 (suggested by 'electricmonk')

Other changes:

* New variant of AnnotationIntrospector.getFormat(), to support class
  annotations
* It is now possible to serialize instances of plain old Object, iff
  'FAIL_ON_EMPTY_BEANS' is disabled.
* Trying to remove reference to "JSON" in datatype conversion errors
 (since databinding is format-agnostic)

INCOMPATIBILITIES: (rats!)

* Note that [Issue#33] (see above) is, technically speaking, backwards
  imcompatible change. It is estimated that it should NOT affect most
  users, as changes are to edge cases (and undocumented ones at that).
  However, it can potentially cause problems with upgrade.
* Implementation of `JsonFormatVisitable` resulting in 2 new methods
  being added in `BeanPropertyFilter` interface -- this is unfortunate,
  but was required to support full traversability.

2.0.4 (26-Jun-2012)

* [Issue#6]: element count for PrettyPrinter, endObject wrong
   (reported by "thebluemountain")
* [JACKSON-838]: Utf8StreamParser._reportInvalidToken() skips letters
    from reported token name
   (reported by Lóránt Pintér)
* [JACKSON-841] Data is doubled in SegmentedStringWriter output
   (reported by Scott S)
* [JACKSON-842] ArrayIndexOutOfBoundsException when skipping C-style comments
   (reported by Sebastien R)

2.0.3: no version 2.0.3 released -- only used for extension modules

2.0.2 [14-May-2012]

Fixes:

* [Issue#14]: Annotations were not included from parent classes of
  mix-in classes
 (reported by @guillaup)
* [JACKSON-824]: Combination of JSON Views, ObjectMapper.readerForUpdating()
  was not working
 (reported by Nir S)
(and all fixes from 1.9.7)

Improvements:

* [Issue#11]: Improve ObjectMapper.convertValue()/.treeToValue() to use
  cast if possible

2.0.1 [23-Apr-2012]

Fixes:

* [JACKSON-827] Ensure core packages work on JDK 1.5
 (reported by Pascal g)
* [JACKSON-829] Custom serializers not working for List<String> properties,
  @JsonSerialize(contentUsing)
 (reported by James R)

Improvements:

* [Issue#5]: Add support for maps with java.util.Locale keys to the set of
  StdKeyDeserializers
 (contributed by Ryan G)

2.0.0 [25-Mar-2012]

Fixes:

* [JACKSON-368]: Problems with managed references, abstract types
* [JACKSON-711]: Delegating @JsonCreator did not work with Injectable values
* [JACKSON-798]: Problem with external type id, creators
  (reported by Casey L)
(and all fixes up until and including 1.9.6)

Improvements:

* [JACKSON-546]: Indicate end-of-input with JsonMappingException instead
  of EOFException, when there is no parsing exception
* [JACKSON-664]: Reduce overhead of type resolution by adding caching
  in TypeFactory
* [JACKSON-690]: Pass DeserializationContext through ValueInstantiator
* [JACKSON-695]: Add 'isEmpty(value)' in JsonSerializer to allow
  customizing handling of serialization of empty values
* [JACKSON-710]: 'ObjectMapper.convertValue()' should ignore root value
  wrapping/unwrapping settings
* [JACKSON-730] Split various features (JsonParser, JsonGenerator,
  SerializationConfig, DeserializationConfig) into per-factory
  features (MapperFeature, JsonFactory.Feature) an per
  instance features (existing ones)
* [JACKSON-732]: Allow 'AnnotationIntrospector.findContentDeserializer()'
  (and similar) to return instance, not just Class<?> for instance
 (requested by James R)
* [JACKSON-736]: Add (more) access to array, container and map serializers
* [JACKSON-737]: Allow accessing of "creator properties" for BeanDeserializer
* [JACKSON-748]: Add 'registerSubtypes' to 'Module.setupContext' (and SimpleModule)
* [JACKSON-749]: Make @JsonValue work for Enum deserialization
* [JACKSON-769]: ObjectNode/ArrayNode: change 'put', 'insert', 'add' to return
  'this node' (unless already returning something)
* [JACKSON-770]: Simplify method naming for JsonNode, drop unnecessary 'get' prefix
  from methods like 'getTextValue()' (becomes 'textValue()')
* [JACKSON-777]: Rename 'SerializationConfig.Feature' as 'SerializationFeature',
  'DeserializationConfig.Feature' as 'DeserializationFeature'
* [JACKSON-780]: MissingNode, NullNode should return 'defaultValue' from 'asXxx' methods,
  (not 0 for numbers), as they are not numeric types
* [JACKSON-787]: Allow use of @JsonIgnoreProperties for properties (fields, getters, setters)
* [JACKSON-795]: @JsonValue was not working for Maps, Collections
* [JACKSON-800]: Add 'Module.SetupContext#addDeserializationProblemHandler'
 (suggested by James R)

New features:

* [JACKSON-107]: Add support for Object Identity (to handled cycles, shared refs),
  with @JsonIdentityInfo
* [JACKSON-435]: Allow per-property Date formatting using @JsonFormat.
* [JACKSON-437]: Allow injecting of type id as POJO property, by setting
  new '@JsonTypeInfo.visible' property to true.
* [JACKSON-469]: Support "Builder pattern" for deserialiation; that is, allow
  use of separate Builder object for data binding, creating actual value
* [JACKSON-608]: Allow use of JSON Views for deserialization
* [JACKSON-636]: Add 'SerializationFeature.ORDER_MAP_ENTRIES_BY_KEYS' to allow
  forced sorting of Maps during serialization
  (suggested by Joern H)
* [JACKSON-669]: Allow prefix/suffix for @JsonUnwrapped properties
 (requested by Aner P)
* [JACKSON-707]: Add 'JsonNode.deepCopy()', to create safe deep copies
  of ObjectNodes, ArrayNodes.
* [JACKSON-714]: Add general-purpose @JsonFormat annotation
* [JACKSON-718]: Added 'JsonNode.canConvertToInt()', 'JsonNode.canConvertToLong()'
* [JACKSON-747]: Allow changing of 'SerializationFeature' for ObjectWriter,
  'DeserializationFeature' for ObjectReader.
* [JACKSON-752]: Add @JsonInclude (replacement of @JsonSerialize.include)
* [JACKSON-754]: Add @JacksonAnnotationsInside for creating "annotation
  bundles" (also: AnnotationIntrospector.isAnnotationBundle())
* [JACKSON-762]: Allow using @JsonTypeId to specify property to use as
  type id, instead of using separate type id resolver.
* [JACKSON-764]: Allow specifying "root name" to use for root wrapping
  via ObjectReader, ObjectWriter.
* [JACKSON-772]: Add 'JsonNode.withArray()' to use for traversing Array nodes.
* [JACKSON-793]: Add support for configurable Locale, TimeZone to use
  (via SerializationConfig, DeserializationConfig)
* [JACKSON-805]: Add 'SerializationFeature.WRITE_SINGLE_ELEM_ARRAYS_UNWRAPPED'
  to improve interoperability with BadgerFish/Jettison
* [JACKSON-810]: Deserialization Feature: Allow unknown Enum values via
  'DeserializationFeature.READ_UNKNOWN_ENUM_VALUES_AS_NULL'
  (suggested by Raymond R)
* [JACKSON-813]: Add '@JsonSerializableSchema.id' attribute, to indicate
  'id' value to add to generated JSON Schemas.

[entries for versions 1.x and earlier not retained; refer to earlier releases)