feat(flow): accumlator for aggr func (#3396)

* feat: Accumlator trait * feat: add `OrdValue` accum&use enum_dispatch * test: more accum test * feat: eval aggr funcs * chore: refactor test&fmt clippy * refactor: less verbose * test: more tests * refactor: better err handling&use OrdValue for Count * refactor: ignore null&more tests for error handle * refactor: OrdValue accum * chore: extract null check * refactor: def&use fn signature * chore: use extra cond with match guard * chore: per review
GreptimeTeam · Mar 12, 2024 · 7639c22 · 7639c22
1 parent 1255c1f
commit 7639c22
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Showing 6 changed files with 1,187 additions and 31 deletions.
diff --git a/Cargo.lock b/Cargo.lock
diff --git a/src/flow/Cargo.toml b/src/flow/Cargo.toml
@@ -18,6 +18,7 @@ common-query.workspace = true
 common-telemetry.workspace = true
 common-time.workspace = true
 datatypes.workspace = true
+enum_dispatch = "0.3"
 hydroflow = "0.5.0"
 itertools.workspace = true
 num-traits = "0.2"
@@ -27,3 +28,6 @@ session.workspace = true
 snafu.workspace = true
 tokio.workspace = true
 tonic.workspace = true
+
+[dev-dependencies]
+serde_json = "1.0"
diff --git a/src/flow/src/expr/error.rs b/src/flow/src/expr/error.rs
@@ -61,4 +61,7 @@ pub enum EvalError {
 
     #[snafu(display("Unsupported temporal filter: {reason}"))]
     UnsupportedTemporalFilter { reason: String, location: Location },
+
+    #[snafu(display("Overflowed during evaluation"))]
+    Overflow { location: Location },
 }