mirror of
https://github.com/MariaDB/server.git
synced 2025-10-31 02:46:29 +01:00
92 lines
3.1 KiB
C++
92 lines
3.1 KiB
C++
/*
|
|
Copyright (c) 2019, 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 02110-1301 USA */
|
|
|
|
#define MYSQL_SERVER
|
|
|
|
#include <my_global.h>
|
|
#include <sql_class.h>
|
|
#include <mysql/plugin_function.h>
|
|
|
|
class Item_func_sysconst_test :public Item_func_sysconst
|
|
{
|
|
public:
|
|
Item_func_sysconst_test(THD *thd): Item_func_sysconst(thd) {}
|
|
String *val_str(String *str) override
|
|
{
|
|
null_value= str->copy(STRING_WITH_LEN("sysconst_test"), system_charset_info);
|
|
return null_value ? NULL : str;
|
|
}
|
|
bool fix_length_and_dec() override
|
|
{
|
|
max_length= MAX_FIELD_NAME * system_charset_info->mbmaxlen;
|
|
set_maybe_null();
|
|
return false;
|
|
}
|
|
LEX_CSTRING func_name_cstring() const override
|
|
{
|
|
static LEX_CSTRING name= {STRING_WITH_LEN("sysconst_test") };
|
|
return name;
|
|
}
|
|
const char *fully_qualified_func_name() const override
|
|
{ return "sysconst_test()"; }
|
|
Item *do_get_copy(THD *thd) const override
|
|
{ return get_item_copy<Item_func_sysconst_test>(thd, this); }
|
|
};
|
|
|
|
|
|
class Create_func_sysconst_test : public Create_func_arg0
|
|
{
|
|
public:
|
|
Item *create_builder(THD *thd) override;
|
|
static Create_func_sysconst_test s_singleton;
|
|
protected:
|
|
Create_func_sysconst_test() {}
|
|
};
|
|
|
|
|
|
Create_func_sysconst_test Create_func_sysconst_test::s_singleton;
|
|
|
|
Item* Create_func_sysconst_test::create_builder(THD *thd)
|
|
{
|
|
return new (thd->mem_root) Item_func_sysconst_test(thd);
|
|
}
|
|
|
|
|
|
#define BUILDER(F) & F::s_singleton
|
|
|
|
|
|
static Plugin_function
|
|
plugin_descriptor_function_sysconst_test(BUILDER(Create_func_sysconst_test));
|
|
|
|
/*************************************************************************/
|
|
|
|
maria_declare_plugin(type_test)
|
|
{
|
|
MariaDB_FUNCTION_PLUGIN, // the plugin type (see include/mysql/plugin.h)
|
|
&plugin_descriptor_function_sysconst_test, // pointer to type-specific plugin descriptor
|
|
"sysconst_test", // plugin name
|
|
"MariaDB Corporation", // plugin author
|
|
"Function SYSCONST_TEST()", // the plugin description
|
|
PLUGIN_LICENSE_GPL, // the plugin license (see include/mysql/plugin.h)
|
|
0, // Pointer to plugin initialization function
|
|
0, // Pointer to plugin deinitialization function
|
|
0x0100, // Numeric version 0xAABB means AA.BB version
|
|
NULL, // Status variables
|
|
NULL, // System variables
|
|
"1.0", // String version representation
|
|
MariaDB_PLUGIN_MATURITY_EXPERIMENTAL // Maturity(see include/mysql/plugin.h)*/
|
|
}
|
|
maria_declare_plugin_end;
|