This directory contains an idiomatic C++ client library for interacting with Google Cloud Spanner, which is a fully managed, scalable, relational database service for regional and global application data.
While this library is GA, please note that the Google Cloud C++ client libraries do not follow Semantic Versioning.
The quickstart/ directory contains a minimal environment to get started using this client library in a larger project. The following “Hello World” program is used in this quickstart, and should give you a taste of this library.
#include "google/cloud/spanner/client.h"
#include <iostream>
int main(int argc, char* argv[]) {
if (argc != 4) {
std::cerr << "Usage: " << argv[0]
<< " project-id instance-id database-id\n";
return 1;
}
namespace spanner = ::google::cloud::spanner;
spanner::Client client(
spanner::MakeConnection(spanner::Database(argv[1], argv[2], argv[3])));
auto rows =
client.ExecuteQuery(spanner::SqlStatement("SELECT 'Hello World'"));
for (auto const& row : spanner::StreamOf<std::tuple<std::string>>(rows)) {
if (!row) {
std::cerr << row.status() << "\n";
return 1;
}
std::cout << std::get<0>(*row) << "\n";
}
return 0;
}
.h files