sketch driver stub recipe

docs/source/cpp/driver_example/CMakeLists.txt

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+# 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.
+
+cmake_minimum_required(VERSION 3.18)
+
+project(adbc_cookbook_recipes_driver
+        VERSION "1.0.0"
+        LANGUAGES CXX)
+
+include(CTest)
+include(FetchContent)
+
+set(CMAKE_CXX_STANDARD 17)
+
+# TODO: This currently depends on about-to-be-released nanoarrow, which allows
+# access to both nanoarrow and the IPC reader using a single fetchcontent.
+set(NANOARROW_IPC ON)
+set(NANOARROW_NAMESPACE "DriverExamplePrivate")
+fetchcontent_declare(nanoarrow
+                     GIT_REPOSITORY https://github.com/apache/arrow-nanoarrow.git
+                     GIT_TAG main
+                     GIT_SHALLOW TRUE)
+fetchcontent_makeavailable(nanoarrow)
+
+add_library(adbc_driver_framework ../../../../c/driver/framework/utility.cc
+                                  ../../../../c/driver/framework/objects.cc)
+target_include_directories(adbc_driver_framework PRIVATE ../../../../c ../../../../c/include)
+target_link_libraries(adbc_driver_framework PRIVATE nanoarrow::nanoarrow)
+
+add_library(driver_example SHARED driver_example.cc)
+target_include_directories(driver_example PRIVATE ../../../../c ../../../../c/include)
+target_link_libraries(driver_example PRIVATE adbc_driver_framework nanoarrow::nanoarrow)

docs/source/cpp/driver_example/driver_example.cc

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+// 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 "driver/framework/connection.h"
+#include "driver/framework/database.h"
+#include "driver/framework/statement.h"
+
+#include "nanoarrow/nanoarrow.hpp"
+#include "nanoarrow/nanoarrow_ipc.hpp"
+
+#include "arrow-adbc/adbc.h"
+
+using adbc::driver::Option;
+using adbc::driver::Result;
+using adbc::driver::Status;
+
+class DriverExampleDatabase : public adbc::driver::Database<DriverExampleDatabase> {
+ public:
+  [[maybe_unused]] constexpr static std::string_view kErrorPrefix = "[example]";
+
+  Status SetOptionImpl(std::string_view key, Option value) override {
+    if (key == "uri") {
+      UNWRAP_RESULT(uri_, value.AsString());
+      return adbc::driver::status::Ok();
+    }
+
+    return Base::SetOptionImpl(key, value);
+  }
+
+  Result<Option> GetOption(std::string_view key) override {
+    if (key == "uri") {
+      return Option(uri_);
+    }
+
+    return Base::GetOption(key);
+  }
+
+ private:
+  std::string uri_;
+};
+
+class DriverExampleConnection : public adbc::driver::Connection<DriverExampleConnection> {
+ public:
+  [[maybe_unused]] constexpr static std::string_view kErrorPrefix = "[example]";
+};
+
+class DriverExampleStatement : public adbc::driver::Statement<DriverExampleStatement> {
+ public:
+  [[maybe_unused]] constexpr static std::string_view kErrorPrefix = "[example]";
+};
+
+static AdbcStatusCode ExampleDriverInitFunc(int version, void* raw_driver,
+                                            AdbcError* error) {
+  using ExampleDriver =
+      adbc::driver::Driver<DriverExampleDatabase, DriverExampleConnection,
+                           DriverExampleStatement>;
+  return ExampleDriver::Init(version, raw_driver, error);
+}