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mirror of https://github.com/mariadb-corporation/mariadb-columnstore-engine.git synced 2025-07-01 06:21:41 +03:00

MCOL-641 This commit introduces templates for DataConvert and RowGroup methods.

This commit is contained in:
drrtuy
2020-01-21 12:57:31 +03:00
committed by Roman Nozdrin
parent 0c67b6ab50
commit 54c152d6c8
9 changed files with 111 additions and 37 deletions

View File

@ -145,6 +145,8 @@ extern bool nonConstFunc(Item_func* ifp);
namespace
{
using int128_t = __int128;
using uint128_t = unsigned __int128;
// Calpont vtable non-support error message
const string infinidb_autoswitch_warning = "The query includes syntax that is not supported by MariaDB Columnstore distributed mode. The execution was switched to standard mode with downgraded performance.";
@ -247,9 +249,6 @@ void force_close_fep_conn(THD *thd, cal_connection_info* ci, bool check_prev_rc
ci->cal_conn_hndl = 0;
}
// WIP MCOL-641
using uint128_t = unsigned __int128;
void storeNumericField(Field** f, int64_t value, CalpontSystemCatalog::ColType& ct)
{
// unset null bit first
@ -268,6 +267,8 @@ void storeNumericField(Field** f, int64_t value, CalpontSystemCatalog::ColType&
//if (f2->dec < ct.scale)
// f2->dec = ct.scale;
// WIP MCOL-641
// This is too much
char buf[256];
dataconvert::DataConvert::decimalToString(value, (unsigned)ct.scale, buf, 256, ct.colDataType);
(*f)->store(buf, strlen(buf), (*f)->charset());
@ -808,12 +809,33 @@ int fetchNextRow(uchar* buf, cal_table_info& ti, cal_connection_info* ci, bool h
if (row.getPrecision(s) > 18)
{
// unset null bit first
// Might be redundant
if ((*f)->null_ptr)
*(*f)->null_ptr &= ~(*f)->null_bit;
const uint128_t val = *reinterpret_cast<const uint128_t*>(row.getBinaryField2(s));
char buf[256];
dataconvert::DataConvert::decimalToString(val, (unsigned)colType.scale, buf, 256, colType.colDataType);
uint128_t* udec;
int128_t* dec;
// We won't have more than 38 digits + sign + dp
// Make this precision based
char buf[41];
// This C-style cast doesn't look appropriate.
// Is there a way to use decltype instead of if?
if (colType.colDataType == CalpontSystemCatalog::DECIMAL)
{
dec = row.getBinaryField<int128_t>(s);
dataconvert::DataConvert::decimalToString<int128_t>(dec,
(unsigned)colType.scale, buf,
sizeof(buf), colType.colDataType);
}
else
{
udec = row.getBinaryField<uint128_t>(s);
dataconvert::DataConvert::decimalToString<uint128_t>(udec,
(unsigned)colType.scale, buf,
sizeof(buf), colType.colDataType);
}
Field_new_decimal* f2 = (Field_new_decimal*)*f;
f2->store(buf, strlen(buf), f2->charset());
}