Java Champion, OSS tinkerer, probably best known as "Dr Jackson".
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Fasterxml.com
- Seattle, WA, USA
- https://cowtowncoder.medium.com/
- @cowtowncoder
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java-uuid-generator
java-uuid-generator PublicJava Uuid Generator (JUG) is a Java library for generating all standard UUID versions (v1 - v7)
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low-gc-membuffers
low-gc-membuffers PublicLibrary for creating In-memory circular buffers that use direct ByteBuffers to minimize GC overhead
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java-merge-sort
java-merge-sort PublicBasic stand-alone disk-based N-way merge sort component for Java
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java-json-performance-benchmarks
java-json-performance-benchmarks PublicCollection of jmh-based benchmarks that compare performance of Java JSON libraries for reading, writing
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jackson-compat-minor
jackson-compat-minor PublicTest repository for verifying compatibility between adjacent minor versions
3,521 contributions in the last year
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Contribution activity
April 2025
Created 299 commits in 25 repositories
Created a pull request in FasterXML/jackson-module-kotlin that received 1 comment
Now that databind#5032 has merged jackson-datatype-jsr310
, need to remove dep from Kotlin module
+17
−14
lines changed
•
1
comment
Opened 37 other pull requests in 9 repositories
FasterXML/jackson-databind
1
open
17
merged
1
closed
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(WIP) Reflection testing wrt #4907
This contribution was made on Apr 26
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Fix #5103: pass Object size to writeStartObject() for ObjectNode serialization
This contribution was made on Apr 26
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Fix #5111: add ObjectMapper/ObjectReader methods that take
TokenBuffer
This contribution was made on Apr 26 -
Fixes #4136: drop dangerous deprecated
PropertyNamingStrategy
implementationsThis contribution was made on Apr 26 -
Fixes #5112: add
ObjectMapper.findAndAddModules(...)
variantThis contribution was made on Apr 25 -
Fixes #5110: adds missing
ObjectMapper.createNonBlockingByteBufferParser()
methodThis contribution was made on Apr 25 -
Fixes #5107: make KeyDeserializers use supplier too
This contribution was made on Apr 25
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Fixed #5094: add lazy construction of BeanDescription for deserialization
This contribution was made on Apr 15
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Fixes #5093: make BeanDescription construction lazy to defer/avoid some introspection
This contribution was made on Apr 14
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Improve handling of wrapping as
DatabindException
to try to preserve location infoThis contribution was made on Apr 11 -
Fixes #5067; move date/time DeserializationFeatures into DateTimeFeature
This contribution was made on Apr 10
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Move date/time-related
SerializationFeature
s intoDateTimeFeature
This contribution was made on Apr 10 -
Passing tests for #2135
This contribution was made on Apr 10
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Fixes #3343: make
BeanPropertyWriter.get()
non-finalThis contribution was made on Apr 9 -
Fixes #5065: default change for
DateTimeFeature.ONE_BASED_MONTHS
This contribution was made on Apr 9 -
Fixes #5063: generate distinct names (type ids) if
Version
has no artifact idThis contribution was made on Apr 7 -
Revert "Replace core reflection usage with MethodHandles"
This contribution was made on Apr 7
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Remove one deprecated (in 2.12) internal method to simplify code flow
This contribution was made on Apr 2
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Add failing test for #5049
This contribution was made on Apr 2
FasterXML/jackson-dataformat-xml
4
merged
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Fixes #714: no more trailing tokens after root null
This contribution was made on Apr 22
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Add a test to show #508 fixed
This contribution was made on Apr 17
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Sync with databind/5094 changes
This contribution was made on Apr 16
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Fix compilation wrt databind/5093
This contribution was made on Apr 15
FasterXML/jackson-datatypes-misc
3
merged
1
closed
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Sync with changes from databind/5094
This contribution was made on Apr 16
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De-lombokify Moneta module as well, remove Lombok dependency
This contribution was made on Apr 10
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De-lombokify
javax.money
module -- needed for #56 (JPMS)This contribution was made on Apr 10 -
(DO NOT MERGE) Pushing just for testing
This contribution was made on Apr 10
FasterXML/jackson-module-kotlin
2
merged
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Fix most of databind/5094 change compilation problems
This contribution was made on Apr 16
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Fix compilation wrt databind/5093 changes
This contribution was made on Apr 15
FasterXML/jackson-datatypes-collections
2
merged
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Sync with databind/5094 changes
This contribution was made on Apr 16
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Fix compilation wrt databind/5093 changes
This contribution was made on Apr 15
FasterXML/jackson-modules-base
2
merged
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Sync with changes from databind/5094
This contribution was made on Apr 16
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Fix compilation issue wrt databind/5093 changes
This contribution was made on Apr 15
FasterXML/jackson-dataformats-binary
2
merged
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Sync with databind/5094 changes
This contribution was made on Apr 16
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Fix compilation issue wrt databind/5093 change
This contribution was made on Apr 15
FasterXML/jackson-core
1
merged
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Fixes #1421: make
JsonReadContext
non-finalThis contribution was made on Apr 24
FasterXML/smile-format-specification
1
merged
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Fixes #21: document requirement to avoid String/Key backrefs that encode 0xFE/0xFF bytes
This contribution was made on Apr 18
Reviewed 42 pull requests in 16 repositories
FasterXML/jackson-databind
17 pull requests
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Bump the github-actions group with 3 updates
This contribution was made on Apr 25
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Fix #4533, add
MapperFeature.REQUIRE_HANDLERS_FOR_JAVA8_TIMES
This contribution was made on Apr 24 -
Fix regression in
ObjectNode.with()
This contribution was made on Apr 22 -
Modify
ObjectReader._parserFactory
commentThis contribution was made on Apr 17 -
Autodetect classes in ObjectMapper
This contribution was made on Apr 11
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Move Enum-related DeserializationFeatures into EnumFeature
This contribution was made on Apr 11
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Move Enum related features from
SerializationFeature
toEnumFeature
This contribution was made on Apr 11 -
Replace core reflection usage with MethodHandles
This contribution was made on Apr 7
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Fix #4603 (Keep stacktrace when re-throwing exception with JsonMappingException)
This contribution was made on Apr 7
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Fixing records deserialization issues with read-access when json renamed to same property name
This contribution was made on Apr 6
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Fixing records deserialization issues with read-access when json renamed to same property name
This contribution was made on Apr 6
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[ Jackson 3 ] Add release notes regarding
DateTimeFeature
renameThis contribution was made on Apr 6 -
Add copy-constructor for
MappingIterator
This contribution was made on Apr 5 -
Move
jackson-datatype-jsr310
into jackson-databindThis contribution was made on Apr 4 -
Add new
JsonNodeFeature.USE_BIG_DECIMAL_FOR_FLOATS
This contribution was made on Apr 2 -
Remove one deprecated (in 2.12) internal method to simplify code flow
This contribution was made on Apr 2
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Bump the github-actions group with 2 updates
This contribution was made on Apr 1
FasterXML/jackson-dataformats-binary
4 pull requests
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Bump codecov/codecov-action from 5.4.0 to 5.4.2
This contribution was made on Apr 22
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Bump actions/setup-java from 4.7.0 to 4.7.1
This contribution was made on Apr 14
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Fix #571: Unable to deserialize a pojo with IonStruct
This contribution was made on Apr 11
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Improve ASCII decoding performance for
CBORParser
This contribution was made on Apr 7
FasterXML/jackson-core
3 pull requests
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Bump the github-actions group with 3 updates
This contribution was made on Apr 25
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Add opt-in support for non blocking parser usage with filter delegate
This contribution was made on Apr 6
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Bump the github-actions group with 2 updates
This contribution was made on Apr 1
FasterXML/jackson-dataformat-xml
3 pull requests
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Add feature to include
standalone='yes'
in xml declarationThis contribution was made on Apr 16 -
Bump codecov/codecov-action from 5.4.0 to 5.4.2
This contribution was made on Apr 15
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Bump actions/setup-java from 4.7.0 to 4.7.1
This contribution was made on Apr 14
FasterXML/oss-parent
3 pull requests
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Bump org.jacoco:jacoco-maven-plugin from 0.8.12 to 0.8.13
This contribution was made on Apr 7
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Bump version.plugin.surefire from 3.5.2 to 3.5.3
This contribution was made on Apr 1
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Bump org.ow2.asm:asm from 9.7.1 to 9.8
This contribution was made on Apr 1
FasterXML/jackson-dataformats-text
2 pull requests
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Bump codecov/codecov-action from 5.4.0 to 5.4.2
This contribution was made on Apr 22
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Bump actions/setup-java from 4.7.0 to 4.7.1
This contribution was made on Apr 14
FasterXML/jackson-datatypes-misc
1 pull request
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Bump the github-actions group with 3 updates
This contribution was made on Apr 25
FasterXML/jackson-datatype-joda
1 pull request
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Bump the github-actions group with 2 updates
This contribution was made on Apr 25
FasterXML/jackson-datatypes-collections
1 pull request
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Bump the github-actions group with 2 updates
This contribution was made on Apr 25
FasterXML/jackson-jr
1 pull request
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Bump the github-actions group with 2 updates
This contribution was made on Apr 25
FasterXML/jackson-bom
1 pull request
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Bump actions/setup-java from 4.7.0 to 4.7.1 in the github-actions group
This contribution was made on Apr 24
cowtowncoder/java-uuid-generator
1 pull request
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Update the link of Maven Central badge
This contribution was made on Apr 18
FasterXML/jackson-annotations
1 pull request
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Bump actions/setup-java from 4.7.0 to 4.7.1 in the github-actions group
This contribution was made on Apr 14
FasterXML/jackson-modules-base
1 pull request
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ABDeserializerModifier: FieldProperty is going away
This contribution was made on Apr 11
FasterXML/jackson
1 pull request
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Update README.md
This contribution was made on Apr 7
FasterXML/jackson-module-kotlin
1 pull request
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Added type match check to read functions
This contribution was made on Apr 6
Created an issue in FasterXML/jackson-databind that received 5 comments
Consider possibility of allowing "delegating-AND-properties-based" Creators
A recurring use case for value classes is that of wanting to support two related structures for deserialization via Creator methods (constructor / …
5
comments
Opened 19 other issues in 5 repositories
FasterXML/jackson-databind
9
closed
2
open
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Use
writeStartObject(Object forValue, int size)
forObjectNode
serializationThis contribution was made on Apr 24 -
Remove
AnnotatedMember._typeContext
from 3.0This contribution was made on Apr 24 -
Change the way
BeanDescription
passed during deserializer construction to useSupplier
This contribution was made on Apr 13 -
Change the way
BeanDescription
passed during serializer construction to useSupplier
This contribution was made on Apr 13 -
Move Enum-related
SerializationFeature
s intoEnumFeature
(3.0)This contribution was made on Apr 9 -
Move Enum-related
DeserializationFeature
s intoEnumFeature
(3.0)This contribution was made on Apr 9 -
Create proper
MonthDeserializer
andMonthSerializer
(don't rely onEnumDeserializer
/EnumSerializer
)This contribution was made on Apr 9 -
Change
MapperFeature.OVERRIDE_PUBLIC_ACCESS_MODIFIERS
default tofalse
for 3.0 (if and whenMethodHandle
s used)This contribution was made on Apr 7 -
Move date/time
DeserializationFeature
s intoDateTimeFeature
(3.0)This contribution was made on Apr 5 -
Move date/time
SerializationFeature
s intoDateTimeFeature
(3.0)This contribution was made on Apr 5 -
Change default for
DateTimeFeature.ONE_BASED_MONTHS
totrue
in 3.0This contribution was made on Apr 5
FasterXML/jackson-module-scala
4
closed
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Release 2.19.0
This contribution was made on Apr 25
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Release 3.0.0-rc3
This contribution was made on Apr 14
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Rename "master" branch as "3.x" (JSTEP-12)
This contribution was made on Apr 8
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Release 2.19.0-rc2 (sic!)
This contribution was made on Apr 8
FasterXML/jackson-core
2
open
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Fill in missing
Stream/Json/Read/WriteFeature
s on wikiThis contribution was made on Apr 23 -
Document
StreamReadConstraints
,StreamWriteConstraints
on WikiThis contribution was made on Apr 23
FasterXML/jackson-module-kotlin
1
closed
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Rename "master" branch as "3.x", update CI refs (JSTEP-12)
This contribution was made on Apr 8
FasterXML/jackson-modules-base
1
open
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Afterburner fails after
jackson-databind
rewrite to useMethodHandle
sThis contribution was made on Apr 7
Started 2 discussions in 1 repository
FasterXML/jackson-future-ideas
FasterXML/jackson-future-ideas
-
JSTEP-13: Jackson LTS branches/versions?
This contribution was made on Apr 23
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Path to 3.0.0-rc4
This contribution was made on Apr 19
Answered 1 discussion in 1 repository
FasterXML/jackson-module-kotlin
FasterXML/jackson-module-kotlin
-
Updating from Jackson 2.17 to 2.18 causes KotlinReflectionInternalError
This contribution was made on Apr 18
1
contribution
in private repositories
Apr 12