jonkeane commented on a change in pull request #12769: URL: https://github.com/apache/arrow/pull/12769#discussion_r840676107
########## File path: r/src/tpch-gen.cpp ########## @@ -0,0 +1,167 @@ +// 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. + +#include "./arrow_types.h" + +#if defined(ARROW_R_WITH_ARROW) + +#include <arrow/compute/api.h> +#include <arrow/compute/exec/exec_plan.h> +#include <arrow/compute/exec/tpch_node.h> +#if defined(ARROW_R_WITH_DATASET) +#include <arrow/dataset/api.h> +#include <arrow/dataset/plan.h> +#include <arrow/filesystem/filesystem.h> +#include <arrow/filesystem/localfs.h> + +namespace compute = ::arrow::compute; +namespace ds = ::arrow::dataset; +namespace fs = ::arrow::fs; + +static std::shared_ptr<compute::ExecNode> MakeExecNodeOrStop( + const std::string& factory_name, compute::ExecPlan* plan, + std::vector<compute::ExecNode*> inputs, const compute::ExecNodeOptions& options) { + return std::shared_ptr<compute::ExecNode>( + ValueOrStop(compute::MakeExecNode(factory_name, plan, std::move(inputs), options)), + [](...) { + // empty destructor: ExecNode lifetime is managed by an ExecPlan + }); +} + +// [[arrow::export]] +std::shared_ptr<arrow::RecordBatchReader> Tpch_Dbgen( + const std::shared_ptr<compute::ExecPlan>& plan, double scale_factor, + std::string table_name) { + auto gen = + ValueOrStop(arrow::compute::internal::TpchGen::Make(plan.get(), scale_factor, 1000000)); + + compute::ExecNode* table; + if (table_name == "part") { + table = ValueOrStop(gen->Part()); + } else if (table_name == "supplier") { + table = ValueOrStop(gen->Supplier()); + } else if (table_name == "partsupp") { + table = ValueOrStop(gen->PartSupp()); + } else if (table_name == "customer") { + table = ValueOrStop(gen->Customer()); + } else if (table_name == "nation") { + table = ValueOrStop(gen->Nation()); + } else if (table_name == "lineitem") { + table = ValueOrStop(gen->Lineitem()); + } else if (table_name == "region") { + table = ValueOrStop(gen->Region()); + } else if (table_name == "orders") { + table = ValueOrStop(gen->Orders()); + } else { + cpp11::stop("That's not a valid table name"); + } Review comment: This is repeated down below, and I thought about pulling it out into a separate function so that it's not repeated — but also realize this massive ifelse seems hacky. Is there a better way to do this? -- 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: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
