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/*
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(THD *thd) 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 Lex_ident_routine fully_qualified_func_name() const override
{ return Lex_ident_routine("sysconst_test()"_LEX_CSTRING); }
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));
class Strnxfrm_args: public Null_flag
{
StringBuffer<128> m_srcbuf;
public:
String *m_src;
longlong m_dstlen;
longlong m_nweights;
longlong m_flags;
Strnxfrm_args(Item **args)
:Null_flag(true)
{
if (!(m_src= args[0]->val_str(&m_srcbuf)))
return;
m_dstlen= args[1]->val_int();
if (args[1]->null_value || m_dstlen < 0)
return;
m_nweights= args[2]->val_int();
if (args[2]->null_value || m_nweights < 0)
return;
m_flags= args[3]->val_int();
if (args[3]->null_value || m_flags < 0)
return;
m_is_null= false;
}
my_strnxfrm_ret_t exec(CHARSET_INFO *cs, String *to)
{
DBUG_ASSERT(!is_null());
if ((m_is_null= to->alloc(m_dstlen)))
return {0,0,0};
my_strnxfrm_ret_t rc= cs->strnxfrm((char*) to->ptr(),
(size_t)m_dstlen,
(uint) m_nweights,
m_src->ptr(), m_src->length(),
(uint) m_flags);
to->length((uint32) rc.m_result_length);
return rc;
}
};
class Item_func_strnxfrm_source_length_used: public Item_longlong_func
{
using Self = Item_func_strnxfrm_source_length_used;
public:
using Item_longlong_func::Item_longlong_func;
longlong val_int() override
{
Strnxfrm_args param(args);
if ((null_value= param.is_null()))
return 0;
StringBuffer<128> dstbuf;
my_strnxfrm_ret_t rc= param.exec(args[0]->collation.collation, &dstbuf);
if ((null_value= param.is_null()))
return 0;
return (longlong) rc.m_source_length_used;
}
LEX_CSTRING func_name_cstring() const override
{
static LEX_CSTRING name= "strnxfrm_source_length_used"_LEX_CSTRING;
return name;
}
Item *do_get_copy(THD *thd) const override
{
return get_item_copy<Self>(thd, this);
}
class Create_func : public Create_native_func
{
public:
using Create_native_func::Create_native_func;
Item *create_native(THD *thd, const LEX_CSTRING *name,
List<Item> *item_list) override
{
uint arg_count= item_list ? item_list->elements : 0;
if (arg_count != 4)
{
my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
return nullptr;
}
return new (thd->mem_root) Self(thd, *item_list);
}
};
static Plugin_function *plugin_descriptor()
{
static Create_func creator;
static Plugin_function descriptor(&creator);
return &descriptor;
}
};
class Item_func_strnxfrm_warnings: public Item_long_func
{
using Self = Item_func_strnxfrm_warnings;
public:
using Item_long_func::Item_long_func;
longlong val_int() override
{
Strnxfrm_args param(args);
if ((null_value= param.is_null()))
return 0;
StringBuffer<128> dstbuf;
my_strnxfrm_ret_t rc= param.exec(args[0]->collation.collation, &dstbuf);
if ((null_value= param.is_null()))
return 0;
return (longlong) rc.m_warnings;
}
LEX_CSTRING func_name_cstring() const override
{
static LEX_CSTRING name= "strnxfrm_warnings"_LEX_CSTRING;
return name;
}
Item *do_get_copy(THD *thd) const override
{
return get_item_copy<Self>(thd, this);
}
class Create_func : public Create_native_func
{
public:
using Create_native_func::Create_native_func;
Item *create_native(THD *thd, const LEX_CSTRING *name,
List<Item> *item_list) override
{
uint arg_count= item_list ? item_list->elements : 0;
if (arg_count != 4)
{
my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
return nullptr;
}
return new (thd->mem_root) Self(thd, *item_list);
}
};
static Plugin_function *plugin_descriptor()
{
static Create_func creator;
static Plugin_function descriptor(&creator);
return &descriptor;
}
};
class Item_func_strnxfrm: public Item_str_func
{
using Self = Item_func_strnxfrm;
public:
using Item_str_func::Item_str_func;
bool fix_length_and_dec(THD *thd) override
{
max_length= MAX_BLOB_WIDTH;
return false;
}
String *val_str(String *to) override
{
Strnxfrm_args param(args);
if ((null_value= param.is_null()))
return nullptr;
param.exec(args[0]->collation.collation, to);
if ((null_value= param.is_null()))
return nullptr;
return to;
}
LEX_CSTRING func_name_cstring() const override
{
static LEX_CSTRING name= "strnxfrm"_LEX_CSTRING;
return name;
}
Item *do_get_copy(THD *thd) const override
{
return get_item_copy<Self>(thd, this);
}
class Create_func : public Create_native_func
{
public:
using Create_native_func::Create_native_func;
Item *create_native(THD *thd, const LEX_CSTRING *name,
List<Item> *item_list) override
{
uint arg_count= item_list ? item_list->elements : 0;
if (arg_count != 4)
{
my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name->str);
return nullptr;
}
return new (thd->mem_root) Self(thd, *item_list);
}
};
static Plugin_function *plugin_descriptor()
{
static Create_func creator;
static Plugin_function descriptor(&creator);
return &descriptor;
}
};
/*************************************************************************/
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)*/
},
{
MariaDB_FUNCTION_PLUGIN, // the plugin type
Item_func_strnxfrm::plugin_descriptor(),
"strnxfrm", // plugin name
"MariaDB Corporation", // plugin author
"Function STRNXFRM()", // the plugin description
PLUGIN_LICENSE_GPL, // the plugin license
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
},
{
MariaDB_FUNCTION_PLUGIN, // the plugin type
Item_func_strnxfrm_source_length_used::plugin_descriptor(),
"strnxfrm_source_length_used",// plugin name
"MariaDB Corporation", // plugin author
"Function STRNXFRM_SOURCE_LENGTH_USED()", // the plugin description
PLUGIN_LICENSE_GPL, // the plugin license
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
},
{
MariaDB_FUNCTION_PLUGIN, // the plugin type
Item_func_strnxfrm_warnings::plugin_descriptor(),
"strnxfrm_warnings",// plugin name
"MariaDB Corporation", // plugin author
"Function STRNXFRM_WARNINGS()", // the plugin description
PLUGIN_LICENSE_GPL, // the plugin license
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
}
maria_declare_plugin_end;
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