jonkeane commented on a change in pull request #10780: URL: https://github.com/apache/arrow/pull/10780#discussion_r675011947
########## File path: r/R/duckdb.R ########## @@ -0,0 +1,91 @@ +# 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. + +arrow_duck_connection <- function() { + con <- getOption("arrow_duck_con") + if (is.null(con) || !DBI::dbIsValid(con)) { + con <- DBI::dbConnect(duckdb::duckdb()) + # Use the same CPU count that the arrow library is set to + DBI::dbExecute(con, paste0("PRAGMA threads=", cpu_count())) + options(arrow_duck_con = con) + } + con +} + +# TODO: note that this is copied from dbplyr Review comment: _nods_ we also should include info about this in LICENSE.txt too, or is it changed enough to not also need that? -- 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]
