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Snowflake JDBC Driver

This is a stub implementation of a JDBC driver for Snowflake that provides the basic JDBC interface and delegates to a native Rust implementation via JNI.

Testing

  • Set up credentials (see main README.md for setup instructions)
  • Java 8+
  • Gradle 6.0+

Running Tests

export CORE_PATH="$(pwd)/target/debug/libsf_core.dylib"
export PARAMETER_PATH="$(pwd)/parameters.json"
cd jdbc/

# Build and run all tests
./gradlew test

# Run with verbose output
./gradlew test --info

# Run specific test class
./gradlew test --tests SnowflakeDriverTest

# Run specific test method
./gradlew test --tests SnowflakeQueryTest.testSimpleQuery

# Generate old-driver reference coverage (JaCoCo XML + HTML)
./gradlew referenceTest

# Clean and rebuild
./gradlew clean build test

Coverage Streams In CI

  • CI runs old-driver reference coverage from build/reports/jacoco/referenceTest/coverage.xml.
  • CI prints overall line coverage in logs and GITHUB_STEP_SUMMARY via jdbc/ci/reference_tests/extract_coverage.py.
  • JaCoCo artifacts are uploaded as workflow artifacts for inspection.

Local Coverage Extraction

python3 ci/reference_tests/extract_coverage.py \
  --report build/reports/jacoco/referenceTest/coverage.xml \
  --label "OLD JDBC reference"

Requirements

  • Java 8+
  • Gradle 6.0+
  • Built Rust components: sf_core and jdbc_bridge
  • Parameters: parameters.json (see main README.md for setup instructions)

Lombok

jdbc uses Lombok in production and test sources via Gradle annotation processors.

If your IDE shows unresolved Lombok symbols, enable annotation processing for the project and refresh Gradle.