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MDEV-12649 Add Type_handler::Item_save_in_value

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This commit is contained in:
Alexander Barkov
2017-04-30 22:50:37 +04:00
parent 7a19c59c00
commit c67971a8a3
4 changed files with 101 additions and 48 deletions
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87
sql/sql_type.cc
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@ -3808,4 +3808,91 @@ Type_handler_olddecimal::type_handler_for_union(const Item *item) const
}
/***************************************************************************/
bool Type_handler::check_null(const Item *item, st_value *value) const
{
if (item->null_value)
{
value->m_type= DYN_COL_NULL;
return true;
}
return false;
}
bool Type_handler_null::
Item_save_in_value(Item *item, st_value *value) const
{
value->m_type= DYN_COL_NULL;
return true;
}
bool Type_handler_row::
Item_save_in_value(Item *item, st_value *value) const
{
DBUG_ASSERT(0);
value->m_type= DYN_COL_NULL;
return true;
}
bool Type_handler_int_result::
Item_save_in_value(Item *item, st_value *value) const
{
value->m_type= item->unsigned_flag ? DYN_COL_UINT : DYN_COL_INT;
value->value.m_longlong= item->val_int();
return check_null(item, value);
}
bool Type_handler_real_result::
Item_save_in_value(Item *item, st_value *value) const
{
value->m_type= DYN_COL_DOUBLE;
value->value.m_double= item->val_real();
return check_null(item, value);
}
bool Type_handler_decimal_result::
Item_save_in_value(Item *item, st_value *value) const
{
value->m_type= DYN_COL_DECIMAL;
my_decimal *dec= item->val_decimal(&value->m_decimal);
if (dec != &value->m_decimal && !item->null_value)
my_decimal2decimal(dec, &value->m_decimal);
return check_null(item, value);
}
bool Type_handler_string_result::
Item_save_in_value(Item *item, st_value *value) const
{
value->m_type= DYN_COL_STRING;
String *str= item->val_str(&value->m_string);
if (str != &value->m_string && !item->null_value)
value->m_string.set(str->ptr(), str->length(), str->charset());
return check_null(item, value);
}
bool Type_handler_temporal_with_date::
Item_save_in_value(Item *item, st_value *value) const
{
value->m_type= DYN_COL_DATETIME;
item->get_date(&value->value.m_time, sql_mode_for_dates(current_thd));
return check_null(item, value);
}
bool Type_handler_time_common::
Item_save_in_value(Item *item, st_value *value) const
{
value->m_type= DYN_COL_DATETIME;
item->get_time(&value->value.m_time);
return check_null(item, value);
}
/***************************************************************************/