tmp1

Signed-off-by: junxiang Mu <1948535941@qq.com>

s3select/api/src/lib.rs

@@ -0,0 +1,52 @@
+use std::fmt::Display;
+
+use datafusion::common::DataFusionError;
+use snafu::{Backtrace, Location, Snafu};
+
+pub mod query;
+pub mod server;
+
+pub type QueryResult<T> = Result<T, QueryError>;
+
+#[derive(Debug, Snafu)]
+#[snafu(visibility(pub))]
+pub enum QueryError {
+    Datafusion {
+        source: DataFusionError,
+        location: Location,
+        backtrace: Backtrace,
+    },
+}
+
+impl From<DataFusionError> for QueryError {
+    fn from(value: DataFusionError) -> Self {
+        match value {
+            DataFusionError::External(e) if e.downcast_ref::<QueryError>().is_some() => *e.downcast::<QueryError>().unwrap(),
+
+            v => Self::Datafusion {
+                source: v,
+                location: Default::default(),
+                backtrace: Backtrace::capture(),
+            },
+        }
+    }
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct ResolvedTable {
+    // path
+    table: String,
+}
+
+impl ResolvedTable {
+    pub fn table(&self) -> &str {
+        &self.table
+    }
+}
+
+impl Display for ResolvedTable {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        let Self { table } = self;
+        write!(f, "{table}")
+    }
+}