hdf5_dataset::hdf5_dataset
(
hdf5_file &file,
std::string const& path,
hdf5_datatype const& datatype,
hdf5_dataspace const& dataspace
)
:
path_(path)
{
// Check if name exists in this file.
htri_t status = H5Lexists(file.get_id(), path.c_str(), H5P_DEFAULT);
if(status > 0) { // Full path exists.
// Attempt to open it as a dataset
set_id(H5Dopen2(file.get_id(), path.c_str(), H5P_DEFAULT));
if(get_id() < 0) {
boost::serialization::throw_exception(
hdf5_archive_exception(
hdf5_archive_exception::hdf5_archive_dataset_access_error,
path.c_str()
)
);
}
}
else if(status == 0){ // Final link in path does not exist.
// Create the dataset.
set_id(H5Dcreate2(
file.get_id(),
path.c_str(),
datatype.get_id(),
dataspace.get_id(),
H5P_DEFAULT,
H5P_DEFAULT,
H5P_DEFAULT
)
);
if(get_id() < 0) {
boost::serialization::throw_exception(
hdf5_archive_exception(
hdf5_archive_exception::hdf5_archive_dataset_create_error,
path.c_str()
)
);
}
}
else { // intermediate link does not exist, or other error
boost::serialization::throw_exception(
hdf5_archive_exception(
hdf5_archive_exception::hdf5_archive_bad_path_error,
path.c_str()
)
);
}
}
void hdf5_datatype::reclaim_buffer(hdf5_dataspace const& dataspace, void* buffer)
{
herr_t status = H5Dvlen_reclaim(
get_id(),
dataspace.get_id(),
H5P_DEFAULT,
buffer
);
if(status < 0) {
boost::serialization::throw_exception(
hdf5_archive_exception(
hdf5_archive_exception::hdf5_archive_datatype_access_error
)
);
}
}
