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/*
Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
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 */
/**
@file
@brief
Functions to create an item. Used by sql_yac.yy
*/
#include "sql_priv.h"
/*
It is necessary to include set_var.h instead of item.h because there
are dependencies on include order for set_var.h and item.h. This
will be resolved later.
*/
#include "sql_class.h" // set_var.h: THD
#include "set_var.h"
#include "sp_head.h"
#include "sp.h"
#include "item_inetfunc.h"
#include "sql_time.h"
/*
=============================================================================
LOCAL DECLARATIONS
=============================================================================
*/
/**
Adapter for native functions with a variable number of arguments.
The main use of this class is to discard the following calls:
<code>foo(expr1 AS name1, expr2 AS name2, ...)</code>
which are syntactically correct (the syntax can refer to a UDF),
but semantically invalid for native functions.
*/
class Create_native_func : public Create_func
{
public:
virtual Item *create_func(THD *thd, LEX_STRING name, List<Item> *item_list);
/**
Builder method, with no arguments.
@param thd The current thread
@param name The native function name
@param item_list The function parameters, none of which are named
@return An item representing the function call
*/
virtual Item *create_native(THD *thd, LEX_STRING name,
List<Item> *item_list) = 0;
protected:
/** Constructor. */
Create_native_func() {}
/** Destructor. */
virtual ~Create_native_func() {}
};
/**
Adapter for functions that takes exactly zero arguments.
*/
class Create_func_arg0 : public Create_func
{
public:
virtual Item *create_func(THD *thd, LEX_STRING name, List<Item> *item_list);
/**
Builder method, with no arguments.
@param thd The current thread
@return An item representing the function call
*/
virtual Item *create(THD *thd) = 0;
protected:
/** Constructor. */
Create_func_arg0() {}
/** Destructor. */
virtual ~Create_func_arg0() {}
};
/**
Adapter for functions that takes exactly one argument.
*/
class Create_func_arg1 : public Create_func
{
public:
virtual Item *create_func(THD *thd, LEX_STRING name, List<Item> *item_list);
/**
Builder method, with one argument.
@param thd The current thread
@param arg1 The first argument of the function
@return An item representing the function call
*/
virtual Item *create(THD *thd, Item *arg1) = 0;
protected:
/** Constructor. */
Create_func_arg1() {}
/** Destructor. */
virtual ~Create_func_arg1() {}
};
/**
Adapter for functions that takes exactly two arguments.
*/
class Create_func_arg2 : public Create_func
{
public:
virtual Item *create_func(THD *thd, LEX_STRING name, List<Item> *item_list);
/**
Builder method, with two arguments.
@param thd The current thread
@param arg1 The first argument of the function
@param arg2 The second argument of the function
@return An item representing the function call
*/
virtual Item *create(THD *thd, Item *arg1, Item *arg2) = 0;
protected:
/** Constructor. */
Create_func_arg2() {}
/** Destructor. */
virtual ~Create_func_arg2() {}
};
/**
Adapter for functions that takes exactly three arguments.
*/
class Create_func_arg3 : public Create_func
{
public:
virtual Item *create_func(THD *thd, LEX_STRING name, List<Item> *item_list);
/**
Builder method, with three arguments.
@param thd The current thread
@param arg1 The first argument of the function
@param arg2 The second argument of the function
@param arg3 The third argument of the function
@return An item representing the function call
*/
virtual Item *create(THD *thd, Item *arg1, Item *arg2, Item *arg3) = 0;
protected:
/** Constructor. */
Create_func_arg3() {}
/** Destructor. */
virtual ~Create_func_arg3() {}
};
/**
Function builder for Stored Functions.
*/
class Create_sp_func : public Create_qfunc
{
public:
virtual Item *create(THD *thd, LEX_STRING db, LEX_STRING name,
bool use_explicit_name, List<Item> *item_list);
static Create_sp_func s_singleton;
protected:
/** Constructor. */
Create_sp_func() {}
/** Destructor. */
virtual ~Create_sp_func() {}
};
#ifndef HAVE_SPATIAL
/**
Common (non) builder for geometry functions.
This builder is used in <code>--without-geometry</code> builds only,
to report an error.
*/
class Create_func_no_geom : public Create_func
{
public:
virtual Item *create_func(THD *thd, LEX_STRING name, List<Item> *item_list);
/** Singleton. */
static Create_func_no_geom s_singleton;
protected:
/** Constructor. */
Create_func_no_geom() {}
/** Destructor. */
virtual ~Create_func_no_geom() {}
};
#endif
/*
Concrete functions builders (native functions).
Please keep this list sorted in alphabetical order,
it helps to compare code between versions, and helps with merges conflicts.
*/
class Create_func_abs : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1);
static Create_func_abs s_singleton;
protected:
Create_func_abs() {}
virtual ~Create_func_abs() {}
};
class Create_func_acos : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1);
static Create_func_acos s_singleton;
protected:
Create_func_acos() {}
virtual ~Create_func_acos() {}
};
class Create_func_addtime : public Create_func_arg2
{
public:
virtual Item *create(THD *thd, Item *arg1, Item *arg2);
static Create_func_addtime s_singleton;
protected:
Create_func_addtime() {}
virtual ~Create_func_addtime() {}
};
class Create_func_aes_base : public Create_native_func
{
public:
virtual Item *create_native(THD *thd, LEX_STRING name, List<Item> *item_list)
{
Item *func= NULL, *p1, *p2, *p3;
int arg_count= 0;
/* Unsafe for SBR since result depends on a session variable */
thd->lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_SYSTEM_FUNCTION);
if (item_list != NULL)
arg_count= item_list->elements;
switch (arg_count)
{
case 2:
{
p1= item_list->pop();
p2= item_list->pop();
func= create_aes(thd, p1, p2);
break;
}
case 3:
{
p1= item_list->pop();
p2= item_list->pop();
p3= item_list->pop();
func= create_aes(thd, p1, p2, p3);
break;
}
default:
{
my_error(ER_WRONG_PARAMCOUNT_TO_NATIVE_FCT, MYF(0), name.str);
break;
}
}
return func;
}
virtual Item *create_aes(THD *thd, Item *arg1, Item *arg2)= 0;
virtual Item *create_aes(THD *thd, Item *arg1, Item *arg2, Item *arg3)= 0;
protected:
Create_func_aes_base()
{}
virtual ~Create_func_aes_base()
{}
};
class Create_func_aes_encrypt : public Create_func_aes_base
{
public:
virtual Item *create_aes(THD *thd, Item *arg1, Item *arg2)
{
return new (thd->mem_root) Item_func_aes_encrypt(arg1, arg2);
}
virtual Item *create_aes(THD *thd, Item *arg1, Item *arg2, Item *arg3)
{
return new (thd->mem_root) Item_func_aes_encrypt(arg1, arg2, arg3);
}
static Create_func_aes_encrypt s_singleton;
protected:
Create_func_aes_encrypt() {}
virtual ~Create_func_aes_encrypt() {}
};
class Create_func_aes_decrypt : public Create_func_aes_base
{
public:
virtual Item *create_aes(THD *thd, Item *arg1, Item *arg2)
{
return new (thd->mem_root) Item_func_aes_decrypt(arg1, arg2);
}
virtual Item *create_aes(THD *thd, Item *arg1, Item *arg2, Item *arg3)
{
return new (thd->mem_root) Item_func_aes_decrypt(arg1, arg2, arg3);
}
static Create_func_aes_decrypt s_singleton;
protected:
Create_func_aes_decrypt() {}
virtual ~Create_func_aes_decrypt() {}
};
class Create_func_random_bytes : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1)
{
/* it is unsafe for SBR since it uses crypto random from the ssl library */
thd->lex->set_stmt_unsafe(LEX::BINLOG_STMT_UNSAFE_SYSTEM_FUNCTION);
return new (thd->mem_root) Item_func_random_bytes(arg1);
}
static Create_func_random_bytes s_singleton;
protected:
Create_func_random_bytes()
{}
virtual ~Create_func_random_bytes()
{}
};
#ifdef HAVE_SPATIAL
class Create_func_area : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1);
static Create_func_area s_singleton;
protected:
Create_func_area() {}
virtual ~Create_func_area() {}
};
#endif
#ifdef HAVE_SPATIAL
class Create_func_as_wkb : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1);
static Create_func_as_wkb s_singleton;
protected:
Create_func_as_wkb() {}
virtual ~Create_func_as_wkb() {}
};
#endif
#ifdef HAVE_SPATIAL
class Create_func_as_wkt : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1);
static Create_func_as_wkt s_singleton;
protected:
Create_func_as_wkt() {}
virtual ~Create_func_as_wkt() {}
};
#endif
class Create_func_asin : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1);
static Create_func_asin s_singleton;
protected:
Create_func_asin() {}
virtual ~Create_func_asin() {}
};
class Create_func_atan : public Create_native_func
{
public:
virtual Item *create_native(THD *thd, LEX_STRING name, List<Item> *item_list);
static Create_func_atan s_singleton;
protected:
Create_func_atan() {}
virtual ~Create_func_atan() {}
};
class Create_func_benchmark : public Create_func_arg2
{
public:
virtual Item *create(THD *thd, Item *arg1, Item *arg2);
static Create_func_benchmark s_singleton;
protected:
Create_func_benchmark() {}
virtual ~Create_func_benchmark() {}
};
class Create_func_bin : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1);
static Create_func_bin s_singleton;
protected:
Create_func_bin() {}
virtual ~Create_func_bin() {}
};
class Create_func_bit_count : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1);
static Create_func_bit_count s_singleton;
protected:
Create_func_bit_count() {}
virtual ~Create_func_bit_count() {}
};
class Create_func_bit_length : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1);
static Create_func_bit_length s_singleton;
protected:
Create_func_bit_length() {}
virtual ~Create_func_bit_length() {}
};
class Create_func_ceiling : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1);
static Create_func_ceiling s_singleton;
protected:
Create_func_ceiling() {}
virtual ~Create_func_ceiling() {}
};
#ifdef HAVE_SPATIAL
class Create_func_centroid : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1);
static Create_func_centroid s_singleton;
protected:
Create_func_centroid() {}
virtual ~Create_func_centroid() {}
};
#endif
class Create_func_char_length : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1);
static Create_func_char_length s_singleton;
protected:
Create_func_char_length() {}
virtual ~Create_func_char_length() {}
};
class Create_func_coercibility : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1);
static Create_func_coercibility s_singleton;
protected:
Create_func_coercibility() {}
virtual ~Create_func_coercibility() {}
};
class Create_func_compress : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1);
static Create_func_compress s_singleton;
protected:
Create_func_compress() {}
virtual ~Create_func_compress() {}
};
class Create_func_concat : public Create_native_func
{
public:
virtual Item *create_native(THD *thd, LEX_STRING name, List<Item> *item_list);
static Create_func_concat s_singleton;
protected:
Create_func_concat() {}
virtual ~Create_func_concat() {}
};
class Create_func_concat_ws : public Create_native_func
{
public:
virtual Item *create_native(THD *thd, LEX_STRING name, List<Item> *item_list);
static Create_func_concat_ws s_singleton;
protected:
Create_func_concat_ws() {}
virtual ~Create_func_concat_ws() {}
};
class Create_func_connection_id : public Create_func_arg0
{
public:
virtual Item *create(THD *thd);
static Create_func_connection_id s_singleton;
protected:
Create_func_connection_id() {}
virtual ~Create_func_connection_id() {}
};
#ifdef HAVE_SPATIAL
class Create_func_mbr_contains : public Create_func_arg2
{
public:
virtual Item *create(THD *thd, Item *arg1, Item *arg2);
static Create_func_mbr_contains s_singleton;
protected:
Create_func_mbr_contains() {}
virtual ~Create_func_mbr_contains() {}
};
class Create_func_contains : public Create_func_arg2
{
public:
virtual Item *create(THD *thd, Item *arg1, Item *arg2);
static Create_func_contains s_singleton;
protected:
Create_func_contains() {}
virtual ~Create_func_contains() {}
};
#endif
class Create_func_conv : public Create_func_arg3
{
public:
virtual Item *create(THD *thd, Item *arg1, Item *arg2, Item *arg3);
static Create_func_conv s_singleton;
protected:
Create_func_conv() {}
virtual ~Create_func_conv() {}
};
class Create_func_convert_tz : public Create_func_arg3
{
public:
virtual Item *create(THD *thd, Item *arg1, Item *arg2, Item *arg3);
static Create_func_convert_tz s_singleton;
protected:
Create_func_convert_tz() {}
virtual ~Create_func_convert_tz() {}
};
class Create_func_cos : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1);
static Create_func_cos s_singleton;
protected:
Create_func_cos() {}
virtual ~Create_func_cos() {}
};
class Create_func_cot : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1);
static Create_func_cot s_singleton;
protected:
Create_func_cot() {}
virtual ~Create_func_cot() {}
};
class Create_func_crc32 : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1);
static Create_func_crc32 s_singleton;
protected:
Create_func_crc32() {}
virtual ~Create_func_crc32() {}
};
#ifdef HAVE_SPATIAL
class Create_func_crosses : public Create_func_arg2
{
public:
virtual Item *create(THD *thd, Item *arg1, Item *arg2);
static Create_func_crosses s_singleton;
protected:
Create_func_crosses() {}
virtual ~Create_func_crosses() {}
};
#endif
class Create_func_date_format : public Create_func_arg2
{
public:
virtual Item *create(THD *thd, Item *arg1, Item *arg2);
static Create_func_date_format s_singleton;
protected:
Create_func_date_format() {}
virtual ~Create_func_date_format() {}
};
class Create_func_datediff : public Create_func_arg2
{
public:
virtual Item *create(THD *thd, Item *arg1, Item *arg2);
static Create_func_datediff s_singleton;
protected:
Create_func_datediff() {}
virtual ~Create_func_datediff() {}
};
class Create_func_dayname : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1);
static Create_func_dayname s_singleton;
protected:
Create_func_dayname() {}
virtual ~Create_func_dayname() {}
};
class Create_func_dayofmonth : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1);
static Create_func_dayofmonth s_singleton;
protected:
Create_func_dayofmonth() {}
virtual ~Create_func_dayofmonth() {}
};
class Create_func_dayofweek : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1);
static Create_func_dayofweek s_singleton;
protected:
Create_func_dayofweek() {}
virtual ~Create_func_dayofweek() {}
};
class Create_func_dayofyear : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1);
static Create_func_dayofyear s_singleton;
protected:
Create_func_dayofyear() {}
virtual ~Create_func_dayofyear() {}
};
class Create_func_decode : public Create_func_arg2
{
public:
virtual Item *create(THD *thd, Item *arg1, Item *arg2);
static Create_func_decode s_singleton;
protected:
Create_func_decode() {}
virtual ~Create_func_decode() {}
};
class Create_func_degrees : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1);
static Create_func_degrees s_singleton;
protected:
Create_func_degrees() {}
virtual ~Create_func_degrees() {}
};
class Create_func_des_decrypt : public Create_native_func
{
public:
virtual Item *create_native(THD *thd, LEX_STRING name, List<Item> *item_list);
static Create_func_des_decrypt s_singleton;
protected:
Create_func_des_decrypt() {}
virtual ~Create_func_des_decrypt() {}
};
class Create_func_des_encrypt : public Create_native_func
{
public:
virtual Item *create_native(THD *thd, LEX_STRING name, List<Item> *item_list);
static Create_func_des_encrypt s_singleton;
protected:
Create_func_des_encrypt() {}
virtual ~Create_func_des_encrypt() {}
};
#ifdef HAVE_SPATIAL
class Create_func_dimension : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1);
static Create_func_dimension s_singleton;
protected:
Create_func_dimension() {}
virtual ~Create_func_dimension() {}
};
#endif
#ifdef HAVE_SPATIAL
class Create_func_mbr_disjoint : public Create_func_arg2
{
public:
virtual Item *create(THD *thd, Item *arg1, Item *arg2);
static Create_func_mbr_disjoint s_singleton;
protected:
Create_func_mbr_disjoint() {}
virtual ~Create_func_mbr_disjoint() {}
};
class Create_func_disjoint : public Create_func_arg2
{
public:
virtual Item *create(THD *thd, Item *arg1, Item *arg2);
static Create_func_disjoint s_singleton;
protected:
Create_func_disjoint() {}
virtual ~Create_func_disjoint() {}
};
class Create_func_distance : public Create_func_arg2
{
public:
virtual Item* create(THD *thd, Item *arg1, Item *arg2);
static Create_func_distance s_singleton;
protected:
Create_func_distance() {}
virtual ~Create_func_distance() {}
};
#endif
class Create_func_elt : public Create_native_func
{
public:
virtual Item *create_native(THD *thd, LEX_STRING name, List<Item> *item_list);
static Create_func_elt s_singleton;
protected:
Create_func_elt() {}
virtual ~Create_func_elt() {}
};
class Create_func_encode : public Create_func_arg2
{
public:
virtual Item *create(THD *thd, Item *arg1, Item *arg2);
static Create_func_encode s_singleton;
protected:
Create_func_encode() {}
virtual ~Create_func_encode() {}
};
class Create_func_encrypt : public Create_native_func
{
public:
virtual Item *create_native(THD *thd, LEX_STRING name, List<Item> *item_list);
static Create_func_encrypt s_singleton;
protected:
Create_func_encrypt() {}
virtual ~Create_func_encrypt() {}
};
#ifdef HAVE_SPATIAL
class Create_func_endpoint : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1);
static Create_func_endpoint s_singleton;
protected:
Create_func_endpoint() {}
virtual ~Create_func_endpoint() {}
};
#endif
#ifdef HAVE_SPATIAL
class Create_func_envelope : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1);
static Create_func_envelope s_singleton;
protected:
Create_func_envelope() {}
virtual ~Create_func_envelope() {}
};
#endif
#ifdef HAVE_SPATIAL
class Create_func_mbr_equals : public Create_func_arg2
{
public:
virtual Item *create(THD *thd, Item *arg1, Item *arg2);
static Create_func_mbr_equals s_singleton;
protected:
Create_func_mbr_equals() {}
virtual ~Create_func_mbr_equals() {}
};
class Create_func_equals : public Create_func_arg2
{
public:
virtual Item *create(THD *thd, Item *arg1, Item *arg2);
static Create_func_equals s_singleton;
protected:
Create_func_equals() {}
virtual ~Create_func_equals() {}
};
#endif
class Create_func_exp : public Create_func_arg1
{
public:
virtual Item *create(THD *thd, Item *arg1);
static Create_func_exp s_singleton;