Sample
com.fasterxml.jackson.core/jackson-annotations 2.21: AtomicLongDeserializer, com.fasterxml.jackson.databind.ObjectMapper.readValue, com.fasterxml.jackson.databind.DeserializationFeature.ACCEPT_FLOAT_AS_INT
Verified sample for maven com.fasterxml.jackson.core/jackson-annotations 2.21: AtomicLongDeserializer, com.fasterxml.jackson.databind.ObjectMapper.readValue…
sha256:e09e6400f2f18deb6f594d2e75c67c369a28048cf62b5a771977f6979d9d2af6
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 AtomicLongDeserializer in pkg:maven/com.fasterxml.jackson.core/jackson-databind@2.21.4
- Packages
- Symbols
-
- AtomicLongDeserializer
- com.fasterxml.jackson.databind.ObjectMapper.readValue
- com.fasterxml.jackson.databind.DeserializationFeature.ACCEPT_FLOAT_AS_INT
- com.fasterxml.jackson.databind.cfg.MutableCoercionConfig.setCoercion
- Environment
- java 21
- Created
- 2026-08-18T13:03:47Z
Contract
- assert numeric string above Integer.MAX_VALUE deserializes to AtomicLong without 32-bit truncation
- assert floating-point token above Integer.MAX_VALUE preserves the 64-bit integral value under ACCEPT_FLOAT_AS_INT
- assert negative numeric string below Integer.MIN_VALUE preserves negative 64-bit value
- assert large integral token near Long.MAX_VALUE deserializes to AtomicLong and bean property
- assert disabling ACCEPT_FLOAT_AS_INT rejects floating-point input
- assert configuring integer String coercion to Fail rejects quoted numeric string
Files
- PROMPT.md
- csx.json
- pom.xml
- spec.json
- src/Contract.java
Origin Seeder
anonymous