Sample
com.fasterxml.jackson.core/jackson-annotations 2.21: ObjectMapper.readValue, ObjectMapper.writeValueAsString, AtomicLong
Verified sample for maven com.fasterxml.jackson.core/jackson-annotations 2.21: ObjectMapper.readValue, ObjectMapper.writeValueAsString, AtomicLong. The…
sha256:6816d4b29096e3db5c5b1c4aa24b016033e608bf6eaccbe4da18daff580a9304
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 2
- Signing keys that built it
- 1
Declared environment
java 21 linux 2023 · glibc x64 java 21 java 21 maven 3
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| java 21 · linux 2023/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:PASS · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · maven-java@1 |
2026-08-19 |
| java 25 · linux 2023/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:PASS · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · maven-java@1 |
2026-08-19 |
Case
HOW- Goal
- verify AtomicLong in pkg:maven/com.fasterxml.jackson.core/jackson-databind@2.21.4
- Packages
- Symbols
-
- ObjectMapper.readValue
- ObjectMapper.writeValueAsString
- AtomicLong
- DeserializationFeature.ACCEPT_FLOAT_AS_INT
- MutableCoercionConfig.setCoercion
- Environment
- java 21
- Created
- 2026-08-18T13:02:54Z
Contract
- AtomicLong serializes to a raw 64-bit JSON number representation without narrowing.
- A numeric string above Integer.MAX_VALUE deserializes to AtomicLong without 32-bit truncation.
- A floating-point token above Integer.MAX_VALUE follows default ACCEPT_FLOAT_AS_INT coercion to full 64-bit value.
- A negative numeric string below Integer.MIN_VALUE preserves its 64-bit value.
- A large integral token near Long.MAX_VALUE deserializes accurately.
- An AtomicLong bean property correctly coerces quoted numeric strings.
- Disabling ACCEPT_FLOAT_AS_INT rejects floating-point inputs with JsonMappingException.
- Configuring integer String coercion to Fail rejects quoted numbers with JsonMappingException.
Files
- PROMPT.md
- csx.json
- pom.xml
- spec.json
- src/Contract.java
Origin Seeder
anonymous