findepi commented on code in PR #11516: URL: https://github.com/apache/datafusion/pull/11516#discussion_r1686735612
########## datafusion/catalog/src/session.rs: ########## @@ -0,0 +1,102 @@ +// Licensed to the Apache Software Foundation (ASF) under one +// or more contributor license agreements. See the NOTICE file +// distributed with this work for additional information +// regarding copyright ownership. The ASF licenses this file +// to you under the Apache License, Version 2.0 (the +// "License"); you may not use this file except in compliance +// with the License. You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, +// software distributed under the License is distributed on an +// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +// KIND, either express or implied. See the License for the +// specific language governing permissions and limitations +// under the License. + +use async_trait::async_trait; +use datafusion_common::config::ConfigOptions; +use datafusion_common::{DFSchema, Result}; +use datafusion_execution::config::SessionConfig; +use datafusion_execution::runtime_env::RuntimeEnv; +use datafusion_execution::TaskContext; +use datafusion_expr::execution_props::ExecutionProps; +use datafusion_expr::{AggregateUDF, Expr, LogicalPlan, ScalarUDF, WindowUDF}; +use datafusion_physical_plan::{ExecutionPlan, PhysicalExpr}; +use std::any::Any; +use std::collections::HashMap; +use std::sync::Arc; + +#[async_trait] +pub trait CatalogSession: Send + Sync { + /// Return the session ID + fn session_id(&self) -> &str; + + /// Return the [`SessionConfig`] + fn config(&self) -> &SessionConfig; + + /// return the configuration options + fn config_options(&self) -> &ConfigOptions { + self.config().options() + } + + /// Creates a physical [`ExecutionPlan`] plan from a [`LogicalPlan`]. + /// + /// Note: this will optimize the provided plan first. + /// + /// This function will error for [`LogicalPlan`]s such as catalog DDL like + /// `CREATE TABLE`, which do not have corresponding physical plans and must + /// be handled by another layer, typically the `SessionContext`. + async fn create_physical_plan( + &self, + logical_plan: &LogicalPlan, + ) -> Result<Arc<dyn ExecutionPlan>>; + + /// Create a [`PhysicalExpr`] from an [`Expr`] after applying type + /// coercion, and function rewrites. + /// + /// Note: The expression is not simplified or otherwise optimized: `a = 1 + /// + 2` will not be simplified to `a = 3` as this is a more involved process. + /// See the [expr_api] example for how to simplify expressions. + /// + /// [expr_api]: https://github.com/apache/datafusion/blob/main/datafusion-examples/examples/expr_api.rs + fn create_physical_expr( + &self, + expr: Expr, + df_schema: &DFSchema, + ) -> Result<Arc<dyn PhysicalExpr>>; + + /// Return reference to scalar_functions Review Comment: https://github.com/apache/datafusion/issues/11599 -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: github-unsubscr...@datafusion.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: github-unsubscr...@datafusion.apache.org For additional commands, e-mail: github-h...@datafusion.apache.org
