using trait from alloy.rs

Ignalina · Oct 24, 2022 · 4841020 · 4841020
1 parent ece5765
commit 4841020
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diff --git a/ffi/rust/Cargo.lock b/ffi/rust/Cargo.lock
diff --git a/ffi/rust/Cargo.toml b/ffi/rust/Cargo.toml
@@ -10,4 +10,5 @@ crate-type = ["staticlib"]
 libc = "0.2.2"
 arrow2 = "0.14.2"
 chrono = "0.4.22"
+arrowalloy = "0.0.3"
 
diff --git a/ffi/rust/src/lib.rs b/ffi/rust/src/lib.rs
@@ -28,6 +28,7 @@ use arrow2::datatypes::Field;
 use arrow2::ffi;
 use libc::c_uint;
 use chrono::offset::Local;
+use arrowalloy::api::OneShot;
 
 macro_rules! info {
     ($($arg:tt)*) => {
@@ -38,6 +39,28 @@ macro_rules! info {
         );
     }
 }
+struct DummyBackend {
+    ddlname: String,
+}
+
+impl OneShot for DummyBackend {
+    fn set_lib(&self) -> usize {
+        1
+
+    }
+
+    fn from_chunks(&self, arrays: Vec<Box<dyn Array>>) -> usize {
+
+        info!("Hello! Once you Go Rust you never Go Back !");
+
+        for (i, array) in arrays.iter().enumerate() {
+            info!("array{}: {:?}", i + 1, array);
+        }
+
+        arrays.len()
+    }
+}
+
 
 #[no_mangle]
 pub unsafe extern "C" fn from_chunks_ffi(