void SimpleTableDump::dumpHeader(std::string name, atable_ptr_t table) {
std::stringstream header;
std::vector<std::string> names, types;
std::vector<uint32_t> parts;
// Get names and types
for (size_t i = 0; i < table->columnCount(); ++i) {
names.push_back(table->nameOfColumn(i));
types.push_back(data_type_to_string(table->typeOfColumn(i)));
}
// This calculation will break if the width of the value_id changes
// or someone forgets to simply update the width accordingly in the
// constructor of the table
for (size_t i = 0; i < table->partitionCount(); ++i) {
parts.push_back(table->partitionWidth(i));
}
// Dump and join
header << std::accumulate(names.begin(), names.end(), std::string(), infix(" | ")) << "\n";
header << std::accumulate(types.begin(), types.end(), std::string(), infix(" | ")) << "\n";
std::vector<std::string> allParts;
for (size_t i = 0; i < parts.size(); ++i) {
auto p = parts[i];
auto tmp = std::vector<std::string>(p, std::to_string(i) + "_R");
allParts.insert(allParts.end(), tmp.begin(), tmp.end());
}
header << std::accumulate(allParts.begin(), allParts.end(), std::string(), infix(" | ")) << "\n";
header << "===";
std::string fullPath = _baseDirectory + "/" + name + "/header.dat";
std::ofstream data(fullPath, std::ios::out | std::ios::binary);
data << header.str();
data.close();
}
column_mapping_t identityMap(atable_ptr_t input) {
column_mapping_t map;
for (size_t column_index = 0; column_index < input->columnCount(); ++column_index)
map[column_index] = column_index;
return map;
}