rename the column aliases

common/build.rs

@@ -61,6 +61,14 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
             ".komp_ac.table_definition.TableDefinitionResponse",
             "#[derive(serde::Serialize, serde::Deserialize)]"
         )
+        .type_attribute(
+            ".komp_ac.table_definition.RenameColumnAliasRequest",
+            "#[derive(serde::Serialize, serde::Deserialize)]"
+        )
+        .type_attribute(
+            ".komp_ac.table_definition.RenameColumnAliasResponse",
+            "#[derive(serde::Serialize, serde::Deserialize)]"
+        )
         .type_attribute(
             ".komp_ac.table_script.PostTableScriptRequest",
             "#[derive(serde::Serialize, serde::Deserialize)]",

common/proto/table_definition.proto

@@ -22,6 +22,9 @@ service TableDefinition {
   // Pure data retrieval - no business logic.
   rpc GetProfileDetails(GetProfileDetailsRequest) returns (GetProfileDetailsResponse);
 
+  // Renames a user-visible column alias while keeping the physical column unchanged.
+  rpc RenameColumnAlias(RenameColumnAliasRequest) returns (RenameColumnAliasResponse);
+
   // Drops a table and its metadata, then deletes the profile if it becomes empty.
   rpc DeleteTable(DeleteTableRequest) returns (DeleteTableResponse);
 }
@@ -152,6 +155,20 @@ message ScriptInfo {
   string description = 5;
 }
 
+// Request to rename one user-visible column alias in a table.
+message RenameColumnAliasRequest {
+  string profile_name = 1;
+  string table_name = 2;
+  string old_column_name = 3;
+  string new_column_name = 4;
+}
+
+// Response after renaming one column alias.
+message RenameColumnAliasResponse {
+  bool success = 1;
+  string message = 2;
+}
+
 // Request to delete one table definition entirely.
 message DeleteTableRequest {
   // Profile (schema) name owning the table (must exist).

common/src/proto/komp_ac.table_definition.rs

@@ -151,6 +151,28 @@ pub struct ScriptInfo {
     #[prost(string, tag = "5")]
     pub description: ::prost::alloc::string::String,
 }
+/// Request to rename one user-visible column alias in a table.
+#[derive(serde::Serialize, serde::Deserialize)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct RenameColumnAliasRequest {
+    #[prost(string, tag = "1")]
+    pub profile_name: ::prost::alloc::string::String,
+    #[prost(string, tag = "2")]
+    pub table_name: ::prost::alloc::string::String,
+    #[prost(string, tag = "3")]
+    pub old_column_name: ::prost::alloc::string::String,
+    #[prost(string, tag = "4")]
+    pub new_column_name: ::prost::alloc::string::String,
+}
+/// Response after renaming one column alias.
+#[derive(serde::Serialize, serde::Deserialize)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct RenameColumnAliasResponse {
+    #[prost(bool, tag = "1")]
+    pub success: bool,
+    #[prost(string, tag = "2")]
+    pub message: ::prost::alloc::string::String,
+}
 /// Request to delete one table definition entirely.
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct DeleteTableRequest {
@@ -361,6 +383,36 @@ pub mod table_definition_client {
                 );
             self.inner.unary(req, path, codec).await
         }
+        /// Renames a user-visible column alias while keeping the physical column unchanged.
+        pub async fn rename_column_alias(
+            &mut self,
+            request: impl tonic::IntoRequest<super::RenameColumnAliasRequest>,
+        ) -> std::result::Result<
+            tonic::Response<super::RenameColumnAliasResponse>,
+            tonic::Status,
+        > {
+            self.inner
+                .ready()
+                .await
+                .map_err(|e| {
+                    tonic::Status::unknown(
+                        format!("Service was not ready: {}", e.into()),
+                    )
+                })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path = http::uri::PathAndQuery::from_static(
+                "/komp_ac.table_definition.TableDefinition/RenameColumnAlias",
+            );
+            let mut req = request.into_request();
+            req.extensions_mut()
+                .insert(
+                    GrpcMethod::new(
+                        "komp_ac.table_definition.TableDefinition",
+                        "RenameColumnAlias",
+                    ),
+                );
+            self.inner.unary(req, path, codec).await
+        }
         /// Drops a table and its metadata, then deletes the profile if it becomes empty.
         pub async fn delete_table(
             &mut self,
@@ -434,6 +486,14 @@ pub mod table_definition_server {
             tonic::Response<super::GetProfileDetailsResponse>,
             tonic::Status,
         >;
+        /// Renames a user-visible column alias while keeping the physical column unchanged.
+        async fn rename_column_alias(
+            &self,
+            request: tonic::Request<super::RenameColumnAliasRequest>,
+        ) -> std::result::Result<
+            tonic::Response<super::RenameColumnAliasResponse>,
+            tonic::Status,
+        >;
         /// Drops a table and its metadata, then deletes the profile if it becomes empty.
         async fn delete_table(
             &self,
@@ -664,6 +724,52 @@ pub mod table_definition_server {
                     };
                     Box::pin(fut)
                 }
+                "/komp_ac.table_definition.TableDefinition/RenameColumnAlias" => {
+                    #[allow(non_camel_case_types)]
+                    struct RenameColumnAliasSvc<T: TableDefinition>(pub Arc<T>);
+                    impl<
+                        T: TableDefinition,
+                    > tonic::server::UnaryService<super::RenameColumnAliasRequest>
+                    for RenameColumnAliasSvc<T> {
+                        type Response = super::RenameColumnAliasResponse;
+                        type Future = BoxFuture<
+                            tonic::Response<Self::Response>,
+                            tonic::Status,
+                        >;
+                        fn call(
+                            &mut self,
+                            request: tonic::Request<super::RenameColumnAliasRequest>,
+                        ) -> Self::Future {
+                            let inner = Arc::clone(&self.0);
+                            let fut = async move {
+                                <T as TableDefinition>::rename_column_alias(&inner, request)
+                                    .await
+                            };
+                            Box::pin(fut)
+                        }
+                    }
+                    let accept_compression_encodings = self.accept_compression_encodings;
+                    let send_compression_encodings = self.send_compression_encodings;
+                    let max_decoding_message_size = self.max_decoding_message_size;
+                    let max_encoding_message_size = self.max_encoding_message_size;
+                    let inner = self.inner.clone();
+                    let fut = async move {
+                        let method = RenameColumnAliasSvc(inner);
+                        let codec = tonic::codec::ProstCodec::default();
+                        let mut grpc = tonic::server::Grpc::new(codec)
+                            .apply_compression_config(
+                                accept_compression_encodings,
+                                send_compression_encodings,
+                            )
+                            .apply_max_message_size_config(
+                                max_decoding_message_size,
+                                max_encoding_message_size,
+                            );
+                        let res = grpc.unary(method, req).await;
+                        Ok(res)
+                    };
+                    Box::pin(fut)
+                }
                 "/komp_ac.table_definition.TableDefinition/DeleteTable" => {
                     #[allow(non_camel_case_types)]
                     struct DeleteTableSvc<T: TableDefinition>(pub Arc<T>);