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#ifndef ITEM_UUIDFUNC_INCLUDED
#define ITEM_UUIDFUNC_INCLUDED
/* Copyright (c) 2019,2021, MariaDB Corporation
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
#include "item.h"
class Item_func_sys_guid: public Item_str_func
{
protected:
bool with_dashes;
size_t uuid_len() const
{ return MY_UUID_BARE_STRING_LENGTH + with_dashes*MY_UUID_SEPARATORS; }
public:
Item_func_sys_guid(THD *thd): Item_str_func(thd), with_dashes(false) {}
bool fix_length_and_dec(THD *thd) override
{
collation.set(DTCollation_numeric());
fix_char_length(uuid_len());
return FALSE;
}
bool const_item() const override { return false; }
table_map used_tables() const override { return RAND_TABLE_BIT; }
LEX_CSTRING func_name_cstring() const override
{
static LEX_CSTRING name= {STRING_WITH_LEN("sys_guid") };
return name;
}
String *val_str(String *) override;
bool check_vcol_func_processor(void *arg) override
{
return mark_unsupported_function(func_name(), "()", arg, VCOL_NON_DETERMINISTIC);
}
Item *get_copy(THD *thd) override
{ return get_item_copy<Item_func_sys_guid>(thd, this); }
};
class Item_func_uuid: public Item_func_sys_guid
{
public:
Item_func_uuid(THD *thd): Item_func_sys_guid(thd) { with_dashes= true; }
const Type_handler *type_handler() const override;
LEX_CSTRING func_name_cstring() const override
{
static LEX_CSTRING name= {STRING_WITH_LEN("uuid") };
return name;
}
bool val_native(THD *thd, Native *to) override;
Item *get_copy(THD *thd) override
{ return get_item_copy<Item_func_uuid>(thd, this); }
};
#endif // ITEM_UUIDFUNC_INCLUDED
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