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#include "dbUtils.h"
#include <boost/lexical_cast.hpp>
#include <boost/algorithm/string/join.hpp>
#include <tablepatch.h>
#include <buffer.h>
#include <atomic>
namespace Gentoo {
namespace Utils {
namespace Database {
std::string
emptyClone(DB::Connection * db, const std::string & orig)
{
auto tempTable = orig;
auto dot = tempTable.rfind('.');
if (dot != std::string::npos) {
tempTable = tempTable.substr(dot + 1);
}
tempTable += "_clone_" + boost::lexical_cast<std::string>(db);
db->execute("CREATE TEMPORARY TABLE " + tempTable + " AS SELECT * FROM " + orig + " WHERE false");
return tempTable;
}
std::pair<std::string, DB::ModifyCommandPtr>
namedTemp(DB::Connection * db, const std::string & tempTable, const std::map<std::string, const std::string> & cols)
{
std::set<std::string> keys;
std::set<std::string> defs;
for (auto c : cols) {
keys.insert(c.first);
defs.insert(c.first + " " + c.second);
}
db->execute("CREATE TEMPORARY TABLE " + tempTable + "(" +
boost::join(defs, ",") + ")");
return { tempTable, tablePatchInserter(db, tempTable, keys) };
}
void
drop(DB::Connection * db, const std::string & table)
{
db->execute("DROP TABLE " + table);
}
DB::ModifyCommandPtr
tablePatchInserter(DB::Connection * dbc, const DB::TablePatch & p)
{
return tablePatchInserter(dbc, p.src, p.cols);
}
DB::ModifyCommandPtr
tablePatchInserter(DB::Connection * dbc, const std::string & t, const std::set<std::string> & c)
{
return dbc->modify(
"INSERT INTO " + t +
"(" + boost::algorithm::join(c, ", ") +
") VALUES(" + boost::algorithm::join(std::vector<std::string>(c.size(), "?"), ", ") + ")");
}
}
}
}
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