adriangb commented on code in PR #16791: URL: https://github.com/apache/datafusion/pull/16791#discussion_r2211279282
########## datafusion/core/tests/parquet/schema_adapter.rs: ########## @@ -0,0 +1,92 @@ +// 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 std::sync::Arc; + +use arrow::array::{record_batch, RecordBatch}; +use arrow_schema::{DataType, Field, Schema}; +use bytes::{BufMut, BytesMut}; +use datafusion::assert_batches_eq; +use datafusion::datasource::listing::{ListingTable, ListingTableConfig}; +use datafusion::prelude::SessionContext; +use datafusion_datasource::schema_adapter::DefaultSchemaAdapterFactory; +use datafusion_datasource::ListingTableUrl; +use datafusion_execution::object_store::ObjectStoreUrl; +use datafusion_physical_expr::schema_rewriter::DefaultPhysicalExprAdapterFactory; +use object_store::{memory::InMemory, path::Path, ObjectStore}; +use parquet::arrow::ArrowWriter; + +async fn write_parquet(batch: RecordBatch, store: Arc<dyn ObjectStore>, path: &str) { + let mut out = BytesMut::new().writer(); + { + let mut writer = ArrowWriter::try_new(&mut out, batch.schema(), None).unwrap(); + writer.write(&batch).unwrap(); + writer.finish().unwrap(); + } + let data = out.into_inner().freeze(); + store.put(&Path::from(path), data.into()).await.unwrap(); +} + +#[tokio::test] +async fn single_file() { + let batch = + record_batch!(("extra", Int64, [1, 2, 3]), ("c1", Int32, [1, 2, 3])).unwrap(); + + let store = Arc::new(InMemory::new()) as Arc<dyn ObjectStore>; + let store_url = ObjectStoreUrl::parse("memory://").unwrap(); + let path = "test.parquet"; + write_parquet(batch, store.clone(), path).await; + + let table_schema = Arc::new(Schema::new(vec![ + Field::new("c1", DataType::Int64, false), + Field::new("c2", DataType::Utf8, true), + ])); + + let ctx = SessionContext::new(); + ctx.register_object_store(store_url.as_ref(), Arc::clone(&store)); + + let listing_table_config = + ListingTableConfig::new(ListingTableUrl::parse("memory:///").unwrap()) + .infer_options(&ctx.state()) + .await + .unwrap() + .with_schema(table_schema.clone()) + .with_schema_adapter_factory(Arc::new(DefaultSchemaAdapterFactory)) + .with_physical_expr_adapter_factory(Arc::new( Review Comment: I'm going to follow up with a commit that uses several combinations of custom factories -- 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
