feat: take reference instead of owned value for spring_open() to make C API more natural

CHANGELOG.md

@@ -6,6 +6,12 @@ The format is based on [Keep a Changelog][Keep a Changelog] and this project adh
 
 ## [Unreleased]
 
+## [v0.3.0]
+
+### Changed
+
+- `spring_open()` and `SpringPipelineHL::new()` are changed to take `SpringConfig`'s reference instead of owned value.
+
 ## [v0.2.0]
 
 ### Added
@@ -43,6 +49,7 @@ The format is based on [Keep a Changelog][Keep a Changelog] and this project adh
 <!-- Versions -->
 [Unreleased]: https://github.com/SpringQL/SpringQL/compare/v0.2.0...HEAD
 [Released]: https://github.com/SpringQL/SpringQL/releases
+[v0.3.0]: https://github.com/SpringQL/SpringQL/compare/v0.2.0...v0.3.0
 [v0.2.0]: https://github.com/SpringQL/SpringQL/compare/v0.1.1...v0.2.0
 [v0.1.1]: https://github.com/SpringQL/SpringQL/compare/v0.1.0...v0.1.1
 [v0.1.0]: https://github.com/SpringQL/SpringQL/releases/v0.1.0

springql-core/examples/demo_pipeline.rs

@@ -78,7 +78,7 @@ fn main() {
     let sink_engine_wheel_speed = ForeignSink::start().unwrap();
     let sink_vehicle_speed = ForeignSink::start().unwrap();
 
-    let pipeline = SpringPipelineHL::new(SpringConfig::default()).unwrap();
+    let pipeline = SpringPipelineHL::new(&SpringConfig::default()).unwrap();
     pipeline
         .command(
             "

springql-core/src/api/high_level_rs.rs

@@ -13,7 +13,7 @@ pub struct SpringPipelineHL(SpringPipeline);
 
 impl SpringPipelineHL {
     /// Creates and open an in-process stream pipeline.
-    pub fn new(config: SpringConfig) -> Result<Self> {
+    pub fn new(config: &SpringConfig) -> Result<Self> {
         let low_level = spring_open(config)?;
         Ok(Self(low_level))
     }

springql-core/src/api/low_level_rs.rs

@@ -53,10 +53,10 @@ impl From<SinkRow> for SpringRow {
 }
 
 /// Creates and open an in-process stream pipeline.
-pub fn spring_open(config: SpringConfig) -> Result<SpringPipeline> {
+pub fn spring_open(config: &SpringConfig) -> Result<SpringPipeline> {
     setup_logger();
 
-    let engine = EngineMutex::new(&config);
+    let engine = EngineMutex::new(config);
     let sql_processor = SqlProcessor::default();
 
     Ok(SpringPipeline {

springql-core/tests/feat_spring_open_twice.rs

@@ -4,6 +4,7 @@ use springql_core::low_level_rs::{spring_config_default, spring_open};
 
 #[test]
 fn test_spring_open_twice() {
-    let _ = spring_open(spring_config_default()).unwrap();
-    let _ = spring_open(spring_config_default()).unwrap();
+    let config = spring_config_default();
+    let _ = spring_open(&config).unwrap();
+    let _ = spring_open(&config).unwrap();
 }

springql-core/tests/test_support/mod.rs

@@ -10,7 +10,7 @@ use springql_foreign_service::sink::ForeignSink;
 
 #[allow(dead_code)]
 pub(crate) fn apply_ddls(ddls: &[String], config: SpringConfig) -> SpringPipelineHL {
-    let pipeline = SpringPipelineHL::new(config).unwrap();
+    let pipeline = SpringPipelineHL::new(&config).unwrap();
     for ddl in ddls {
         pipeline.command(ddl).unwrap();
     }
@@ -19,7 +19,7 @@ pub(crate) fn apply_ddls(ddls: &[String], config: SpringConfig) -> SpringPipelin
 
 #[allow(dead_code)]
 pub(crate) fn apply_ddls_low_level(ddls: &[String], config: SpringConfig) -> SpringPipeline {
-    let pipeline = spring_open(config).unwrap();
+    let pipeline = spring_open(&config).unwrap();
     for ddl in ddls {
         spring_command(&pipeline, ddl).unwrap();
     }