packettable.cpp
/* Copyright (c) 2018 vargaconsulting, Toronto,ON Canada
* Author: Varga, Steven <steven@vargaconsulting.ca>
*/
#include <armadillo>
#include <cstdint>
#include "struct.h"
#include <h5cpp/core>
// generated file must be sandwiched between core and io
// to satisfy template dependencies in <h5cpp/io>
#include "generated.h"
#include <h5cpp/io>
#include "utils.hpp"
int main(){
try { // centrally used error handling
std::vector<sn::example::Record> stream = h5::utils::get_test_data<sn::example::Record>(200);
h5::fd_t fd = h5::create("example.h5",H5F_ACC_TRUNC);
// implicit conversion from h5::ds_t to h5::pt_t makes it a breeze to create
// packet_table from h5::open | h5::create calls,
// The newly created h5::pt_t stateful container caches the incoming data until
// bucket filled. IO operations are at h5::chunk boundaries
// or when resource is released. Last partial chunk handled as expected.
//
// compiler assisted introspection generates boilerplate, developer
// can focus on the idea, leaving boring details to machines
h5::pt_t pt = h5::create<sn::example::Record>(fd, "stream of struct",
h5::max_dims{H5S_UNLIMITED}, h5::chunk{20} | h5::gzip{9} );
for( auto record : stream )
h5::append(pt, record);
} catch ( const h5::error::any& e ){
std::cerr << "ERROR:" << e.what();
}
}