mariadb/sql/sp_head.cc

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/* Copyright (C) 2002 MySQL AB
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; either version 2 of the License, or
(at your option) any later version.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#ifdef __GNUC__
#pragma implementation
#endif
#include "mysql_priv.h"
#include "sp_head.h"
#include "sp.h"
#include "sp_pcontext.h"
#include "sp_rcontext.h"
Item_result
sp_map_result_type(enum enum_field_types type)
{
switch (type)
{
case MYSQL_TYPE_TINY:
case MYSQL_TYPE_SHORT:
case MYSQL_TYPE_LONG:
case MYSQL_TYPE_LONGLONG:
case MYSQL_TYPE_INT24:
return INT_RESULT;
case MYSQL_TYPE_DECIMAL:
case MYSQL_TYPE_FLOAT:
case MYSQL_TYPE_DOUBLE:
return REAL_RESULT;
default:
return STRING_RESULT;
}
}
/* Evaluate a (presumed) func item. Always returns an item, the parameter
** if nothing else.
*/
static Item *
eval_func_item(THD *thd, Item *it, enum enum_field_types type)
{
it= it->this_item();
if (it->fix_fields(thd, 0, NULL))
return it; // Shouldn't happen?
/* QQ How do we do this? Is there some better way? */
if (type == MYSQL_TYPE_NULL)
it= new Item_null();
else
{
switch (sp_map_result_type(type)) {
case INT_RESULT:
it= new Item_int(it->val_int());
break;
case REAL_RESULT:
it= new Item_real(it->val());
break;
default:
{
char buffer[MAX_FIELD_WIDTH];
String tmp(buffer, sizeof(buffer), it->charset());
String *s= it->val_str(&tmp);
it= new Item_string(sql_strmake(s->c_ptr_quick(), s->length()),
s->length(), it->charset());
break;
}
}
}
return it;
}
sp_head::sp_head(LEX_STRING *name, LEX *lex)
: m_simple_case(FALSE)
{
const char *dstr = (const char*)lex->buf;
m_call_lex= lex;
m_name= new Item_string(name->str, name->length, default_charset_info);
m_defstr= new Item_string(dstr, lex->end_of_query - lex->buf,
default_charset_info);
my_init_dynamic_array(&m_instr, sizeof(sp_instr *), 16, 8);
m_backpatch.empty();
}
int
sp_head::create(THD *thd)
{
DBUG_ENTER("sp_head::create");
String *name= m_name->const_string();
String *def= m_defstr->const_string();
Most of the groundwork for sprint task 729 (implement FUNCTIONs). Expanded the mysql.proc table, reworked the find/create/drop functions completely, added new functions for FUNCTIONs (lotta functions here :), got rid of some unnecessary use of Item_strings while at it. Extended the parser correspondingly, and fiddled around a bit to make SP FUNCTIONs coexist with UDFs. Can now CREATE and DROP FUNCTIONs. Invoking yet to come... Docs/sp-implemented.txt: Updated with info about CASCADE/RESTICT and METHOD, and some answers to questions. include/mysqld_error.h: New error message for misuse of RETURN. mysql-test/install_test_db.sh: Added enum field to mysql.proc to distinguish between FUNCTION and PROCEDURE. mysql-test/r/sp.result: New test for creating and dropping FUNCTIONS. mysql-test/t/sp.test: New test for creating and dropping FUNCTIONS. scripts/mysql_install_db.sh: Added enum field to mysql.proc to distinguish between FUNCTION and PROCEDURE. sql/lex.h: De-UDFed some symbol names, as they are now used for SPs as well. Added RETURN_SYM. sql/share/czech/errmsg.txt: New error message for misuse of RETURN. sql/share/danish/errmsg.txt: New error message for misuse of RETURN. sql/share/dutch/errmsg.txt: New error message for misuse of RETURN. sql/share/english/errmsg.txt: New error message for misuse of RETURN. sql/share/estonian/errmsg.txt: New error message for misuse of RETURN. sql/share/french/errmsg.txt: New error message for misuse of RETURN. sql/share/german/errmsg.txt: New error message for misuse of RETURN. sql/share/greek/errmsg.txt: New error message for misuse of RETURN. sql/share/hungarian/errmsg.txt: New error message for misuse of RETURN. sql/share/italian/errmsg.txt: New error message for misuse of RETURN. sql/share/japanese/errmsg.txt: New error message for misuse of RETURN. sql/share/korean/errmsg.txt: New error message for misuse of RETURN. sql/share/norwegian-ny/errmsg.txt: New error message for misuse of RETURN. sql/share/norwegian/errmsg.txt: New error message for misuse of RETURN. sql/share/polish/errmsg.txt: New error message for misuse of RETURN. sql/share/portuguese/errmsg.txt: New error message for misuse of RETURN. sql/share/romanian/errmsg.txt: New error message for misuse of RETURN. sql/share/russian/errmsg.txt: New error message for misuse of RETURN. sql/share/serbian/errmsg.txt: New error message for misuse of RETURN. sql/share/slovak/errmsg.txt: New error message for misuse of RETURN. sql/share/spanish/errmsg.txt: New error message for misuse of RETURN. sql/share/swedish/errmsg.txt: New error message for misuse of RETURN. sql/share/ukrainian/errmsg.txt: New error message for misuse of RETURN. sql/sp.cc: Major rehack to accomodate FUNCTIONs, and to make it easier to add future in-memory cache of prepared SPs. sql/sp.h: Major rehack to accomodate FUNCTIONs, and to make it easier to add future in-memory cache of prepared SPs. sql/sp_head.cc: Now creates FUNCTIONs too. (And got rid of some unnecessary Item_string use.) sql/sp_head.h: Now creates FUNCTIONs too. (And got rid of some unnecessary Item_string use.) sql/sql_lex.h: New stored FUNCTION commands. sql/sql_parse.cc: Added FUNCTION support ("drop" merged with the old UDF code), and made some additional changes for better error handling (following the sp.cc rehacking). sql/sql_yacc.yy: Some former UDF specific symbols renamed. Added CREATE FUNCTION parsing. DROP FUNCTION had to be partly merged with the old UDF code, because of the similar syntax. RETURN statement added, but still a no-op.
2003-02-21 17:37:05 +01:00
int ret;
DBUG_PRINT("info", ("type: %d name: %s def: %s",
m_type, name->c_ptr(), def->c_ptr()));
if (m_type == TYPE_ENUM_FUNCTION)
ret= sp_create_function(thd,
name->c_ptr(), name->length(),
def->c_ptr(), def->length());
else
ret= sp_create_procedure(thd,
name->c_ptr(), name->length(),
def->c_ptr(), def->length());
Most of the groundwork for sprint task 729 (implement FUNCTIONs). Expanded the mysql.proc table, reworked the find/create/drop functions completely, added new functions for FUNCTIONs (lotta functions here :), got rid of some unnecessary use of Item_strings while at it. Extended the parser correspondingly, and fiddled around a bit to make SP FUNCTIONs coexist with UDFs. Can now CREATE and DROP FUNCTIONs. Invoking yet to come... Docs/sp-implemented.txt: Updated with info about CASCADE/RESTICT and METHOD, and some answers to questions. include/mysqld_error.h: New error message for misuse of RETURN. mysql-test/install_test_db.sh: Added enum field to mysql.proc to distinguish between FUNCTION and PROCEDURE. mysql-test/r/sp.result: New test for creating and dropping FUNCTIONS. mysql-test/t/sp.test: New test for creating and dropping FUNCTIONS. scripts/mysql_install_db.sh: Added enum field to mysql.proc to distinguish between FUNCTION and PROCEDURE. sql/lex.h: De-UDFed some symbol names, as they are now used for SPs as well. Added RETURN_SYM. sql/share/czech/errmsg.txt: New error message for misuse of RETURN. sql/share/danish/errmsg.txt: New error message for misuse of RETURN. sql/share/dutch/errmsg.txt: New error message for misuse of RETURN. sql/share/english/errmsg.txt: New error message for misuse of RETURN. sql/share/estonian/errmsg.txt: New error message for misuse of RETURN. sql/share/french/errmsg.txt: New error message for misuse of RETURN. sql/share/german/errmsg.txt: New error message for misuse of RETURN. sql/share/greek/errmsg.txt: New error message for misuse of RETURN. sql/share/hungarian/errmsg.txt: New error message for misuse of RETURN. sql/share/italian/errmsg.txt: New error message for misuse of RETURN. sql/share/japanese/errmsg.txt: New error message for misuse of RETURN. sql/share/korean/errmsg.txt: New error message for misuse of RETURN. sql/share/norwegian-ny/errmsg.txt: New error message for misuse of RETURN. sql/share/norwegian/errmsg.txt: New error message for misuse of RETURN. sql/share/polish/errmsg.txt: New error message for misuse of RETURN. sql/share/portuguese/errmsg.txt: New error message for misuse of RETURN. sql/share/romanian/errmsg.txt: New error message for misuse of RETURN. sql/share/russian/errmsg.txt: New error message for misuse of RETURN. sql/share/serbian/errmsg.txt: New error message for misuse of RETURN. sql/share/slovak/errmsg.txt: New error message for misuse of RETURN. sql/share/spanish/errmsg.txt: New error message for misuse of RETURN. sql/share/swedish/errmsg.txt: New error message for misuse of RETURN. sql/share/ukrainian/errmsg.txt: New error message for misuse of RETURN. sql/sp.cc: Major rehack to accomodate FUNCTIONs, and to make it easier to add future in-memory cache of prepared SPs. sql/sp.h: Major rehack to accomodate FUNCTIONs, and to make it easier to add future in-memory cache of prepared SPs. sql/sp_head.cc: Now creates FUNCTIONs too. (And got rid of some unnecessary Item_string use.) sql/sp_head.h: Now creates FUNCTIONs too. (And got rid of some unnecessary Item_string use.) sql/sql_lex.h: New stored FUNCTION commands. sql/sql_parse.cc: Added FUNCTION support ("drop" merged with the old UDF code), and made some additional changes for better error handling (following the sp.cc rehacking). sql/sql_yacc.yy: Some former UDF specific symbols renamed. Added CREATE FUNCTION parsing. DROP FUNCTION had to be partly merged with the old UDF code, because of the similar syntax. RETURN statement added, but still a no-op.
2003-02-21 17:37:05 +01:00
DBUG_RETURN(ret);
}
int
sp_head::execute(THD *thd)
{
DBUG_ENTER("sp_head::execute");
int ret= 0;
uint ip= 0;
do
{
sp_instr *i;
i = get_instr(ip); // Returns NULL when we're done.
if (i == NULL)
break;
DBUG_PRINT("execute", ("Instruction %u", ip));
ret= i->execute(thd, &ip);
} while (ret == 0);
DBUG_RETURN(ret);
}
int
sp_head::execute_function(THD *thd, Item **argp, uint argcount, Item **resp)
{
DBUG_ENTER("sp_head::execute");
DBUG_PRINT("executing", ("procedure %s", ((String *)m_name->const_string())->c_ptr()));
sp_pcontext *pctx = m_call_lex->spcont;
uint csize = pctx->max_framesize();
uint params = pctx->params();
sp_rcontext *octx = thd->spcont;
sp_rcontext *nctx = NULL;
uint i;
int ret;
// QQ Should have some error checking here? (no. of args, types, etc...)
nctx= new sp_rcontext(csize);
for (i= 0 ; i < params && i < argcount ; i++)
{
sp_pvar_t *pvar = pctx->find_pvar(i);
nctx->push_item(eval_func_item(thd, *argp++, pvar->type));
}
// The rest of the frame are local variables which are all IN.
// QQ See comment in execute_procedure below.
for (; i < csize ; i++)
nctx->push_item(NULL);
thd->spcont= nctx;
ret= execute(thd);
if (ret == 0)
*resp= nctx->get_result();
thd->spcont= octx;
DBUG_RETURN(ret);
}
int
sp_head::execute_procedure(THD *thd, List<Item> *args)
{
DBUG_ENTER("sp_head::execute");
DBUG_PRINT("executing", ("procedure %s", ((String *)m_name->const_string())->c_ptr()));
int ret;
sp_instr *p;
sp_pcontext *pctx = m_call_lex->spcont;
uint csize = pctx->max_framesize();
uint params = pctx->params();
sp_rcontext *octx = thd->spcont;
sp_rcontext *nctx = NULL;
my_bool tmp_octx = FALSE; // True if we have allocated a temporary octx
if (csize > 0)
{
uint i;
List_iterator_fast<Item> li(*args);
Most of the groundwork for sprint task 729 (implement FUNCTIONs). Expanded the mysql.proc table, reworked the find/create/drop functions completely, added new functions for FUNCTIONs (lotta functions here :), got rid of some unnecessary use of Item_strings while at it. Extended the parser correspondingly, and fiddled around a bit to make SP FUNCTIONs coexist with UDFs. Can now CREATE and DROP FUNCTIONs. Invoking yet to come... Docs/sp-implemented.txt: Updated with info about CASCADE/RESTICT and METHOD, and some answers to questions. include/mysqld_error.h: New error message for misuse of RETURN. mysql-test/install_test_db.sh: Added enum field to mysql.proc to distinguish between FUNCTION and PROCEDURE. mysql-test/r/sp.result: New test for creating and dropping FUNCTIONS. mysql-test/t/sp.test: New test for creating and dropping FUNCTIONS. scripts/mysql_install_db.sh: Added enum field to mysql.proc to distinguish between FUNCTION and PROCEDURE. sql/lex.h: De-UDFed some symbol names, as they are now used for SPs as well. Added RETURN_SYM. sql/share/czech/errmsg.txt: New error message for misuse of RETURN. sql/share/danish/errmsg.txt: New error message for misuse of RETURN. sql/share/dutch/errmsg.txt: New error message for misuse of RETURN. sql/share/english/errmsg.txt: New error message for misuse of RETURN. sql/share/estonian/errmsg.txt: New error message for misuse of RETURN. sql/share/french/errmsg.txt: New error message for misuse of RETURN. sql/share/german/errmsg.txt: New error message for misuse of RETURN. sql/share/greek/errmsg.txt: New error message for misuse of RETURN. sql/share/hungarian/errmsg.txt: New error message for misuse of RETURN. sql/share/italian/errmsg.txt: New error message for misuse of RETURN. sql/share/japanese/errmsg.txt: New error message for misuse of RETURN. sql/share/korean/errmsg.txt: New error message for misuse of RETURN. sql/share/norwegian-ny/errmsg.txt: New error message for misuse of RETURN. sql/share/norwegian/errmsg.txt: New error message for misuse of RETURN. sql/share/polish/errmsg.txt: New error message for misuse of RETURN. sql/share/portuguese/errmsg.txt: New error message for misuse of RETURN. sql/share/romanian/errmsg.txt: New error message for misuse of RETURN. sql/share/russian/errmsg.txt: New error message for misuse of RETURN. sql/share/serbian/errmsg.txt: New error message for misuse of RETURN. sql/share/slovak/errmsg.txt: New error message for misuse of RETURN. sql/share/spanish/errmsg.txt: New error message for misuse of RETURN. sql/share/swedish/errmsg.txt: New error message for misuse of RETURN. sql/share/ukrainian/errmsg.txt: New error message for misuse of RETURN. sql/sp.cc: Major rehack to accomodate FUNCTIONs, and to make it easier to add future in-memory cache of prepared SPs. sql/sp.h: Major rehack to accomodate FUNCTIONs, and to make it easier to add future in-memory cache of prepared SPs. sql/sp_head.cc: Now creates FUNCTIONs too. (And got rid of some unnecessary Item_string use.) sql/sp_head.h: Now creates FUNCTIONs too. (And got rid of some unnecessary Item_string use.) sql/sql_lex.h: New stored FUNCTION commands. sql/sql_parse.cc: Added FUNCTION support ("drop" merged with the old UDF code), and made some additional changes for better error handling (following the sp.cc rehacking). sql/sql_yacc.yy: Some former UDF specific symbols renamed. Added CREATE FUNCTION parsing. DROP FUNCTION had to be partly merged with the old UDF code, because of the similar syntax. RETURN statement added, but still a no-op.
2003-02-21 17:37:05 +01:00
Item *it;
nctx = new sp_rcontext(csize);
if (! octx)
{ // Create a temporary old context
octx = new sp_rcontext(csize);
tmp_octx = TRUE;
}
// QQ: No error checking whatsoever right now. Should do type checking?
for (i = 0 ; (it= li++) && i < params ; i++)
{
sp_pvar_t *pvar = pctx->find_pvar(i);
if (! pvar)
nctx->set_oindex(i, -1); // Shouldn't happen
else
{
if (pvar->mode == sp_param_out)
nctx->push_item(it->this_item()); // OUT
else
nctx->push_item(eval_func_item(thd, it, pvar->type)); // IN or INOUT
// Note: If it's OUT or INOUT, it must be a variable.
// QQ: Need to handle "global" user/host variables too!!!
if (pvar->mode == sp_param_in)
nctx->set_oindex(i, -1); // IN
else // OUT or INOUT
nctx->set_oindex(i, static_cast<Item_splocal *>(it)->get_offset());
}
}
// The rest of the frame are local variables which are all IN.
// QQ We haven't found any hint of what the value is when unassigned,
// so we set it to NULL for now. It's an error to refer to an
// unassigned variable anyway (which should be detected by the parser).
for (; i < csize ; i++)
nctx->push_item(NULL);
thd->spcont= nctx;
}
ret= execute(thd);
// Don't copy back OUT values if we got an error
if (ret == 0 && csize > 0)
{
List_iterator_fast<Item> li(m_call_lex->value_list);
Most of the groundwork for sprint task 729 (implement FUNCTIONs). Expanded the mysql.proc table, reworked the find/create/drop functions completely, added new functions for FUNCTIONs (lotta functions here :), got rid of some unnecessary use of Item_strings while at it. Extended the parser correspondingly, and fiddled around a bit to make SP FUNCTIONs coexist with UDFs. Can now CREATE and DROP FUNCTIONs. Invoking yet to come... Docs/sp-implemented.txt: Updated with info about CASCADE/RESTICT and METHOD, and some answers to questions. include/mysqld_error.h: New error message for misuse of RETURN. mysql-test/install_test_db.sh: Added enum field to mysql.proc to distinguish between FUNCTION and PROCEDURE. mysql-test/r/sp.result: New test for creating and dropping FUNCTIONS. mysql-test/t/sp.test: New test for creating and dropping FUNCTIONS. scripts/mysql_install_db.sh: Added enum field to mysql.proc to distinguish between FUNCTION and PROCEDURE. sql/lex.h: De-UDFed some symbol names, as they are now used for SPs as well. Added RETURN_SYM. sql/share/czech/errmsg.txt: New error message for misuse of RETURN. sql/share/danish/errmsg.txt: New error message for misuse of RETURN. sql/share/dutch/errmsg.txt: New error message for misuse of RETURN. sql/share/english/errmsg.txt: New error message for misuse of RETURN. sql/share/estonian/errmsg.txt: New error message for misuse of RETURN. sql/share/french/errmsg.txt: New error message for misuse of RETURN. sql/share/german/errmsg.txt: New error message for misuse of RETURN. sql/share/greek/errmsg.txt: New error message for misuse of RETURN. sql/share/hungarian/errmsg.txt: New error message for misuse of RETURN. sql/share/italian/errmsg.txt: New error message for misuse of RETURN. sql/share/japanese/errmsg.txt: New error message for misuse of RETURN. sql/share/korean/errmsg.txt: New error message for misuse of RETURN. sql/share/norwegian-ny/errmsg.txt: New error message for misuse of RETURN. sql/share/norwegian/errmsg.txt: New error message for misuse of RETURN. sql/share/polish/errmsg.txt: New error message for misuse of RETURN. sql/share/portuguese/errmsg.txt: New error message for misuse of RETURN. sql/share/romanian/errmsg.txt: New error message for misuse of RETURN. sql/share/russian/errmsg.txt: New error message for misuse of RETURN. sql/share/serbian/errmsg.txt: New error message for misuse of RETURN. sql/share/slovak/errmsg.txt: New error message for misuse of RETURN. sql/share/spanish/errmsg.txt: New error message for misuse of RETURN. sql/share/swedish/errmsg.txt: New error message for misuse of RETURN. sql/share/ukrainian/errmsg.txt: New error message for misuse of RETURN. sql/sp.cc: Major rehack to accomodate FUNCTIONs, and to make it easier to add future in-memory cache of prepared SPs. sql/sp.h: Major rehack to accomodate FUNCTIONs, and to make it easier to add future in-memory cache of prepared SPs. sql/sp_head.cc: Now creates FUNCTIONs too. (And got rid of some unnecessary Item_string use.) sql/sp_head.h: Now creates FUNCTIONs too. (And got rid of some unnecessary Item_string use.) sql/sql_lex.h: New stored FUNCTION commands. sql/sql_parse.cc: Added FUNCTION support ("drop" merged with the old UDF code), and made some additional changes for better error handling (following the sp.cc rehacking). sql/sql_yacc.yy: Some former UDF specific symbols renamed. Added CREATE FUNCTION parsing. DROP FUNCTION had to be partly merged with the old UDF code, because of the similar syntax. RETURN statement added, but still a no-op.
2003-02-21 17:37:05 +01:00
Item *it;
// Copy back all OUT or INOUT values to the previous frame, or
// set global user variables
for (uint i = 0 ; (it= li++) && i < params ; i++)
{
int oi = nctx->get_oindex(i);
if (oi >= 0)
{
if (! tmp_octx)
octx->set_item(nctx->get_oindex(i), nctx->get_item(i));
else
{ // A global user variable
#if 0
// QQ This works if the parameter really is a user variable, but
// for the moment we can't assure that, so it will crash if it's
// something else. So for now, we just do nothing, to avoid a crash.
// Note: This also assumes we have a get_name() method in
// the Item_func_get_user_var class.
Item *item= nctx->get_item(i);
Item_func_set_user_var *suv;
Item_func_get_user_var *guv= static_cast<Item_func_get_user_var*>(it);
suv= new Item_func_set_user_var(guv->get_name(), item);
suv->fix_fields(thd, NULL, &item);
suv->fix_length_and_dec();
suv->update();
#endif
}
}
}
if (tmp_octx)
thd->spcont= NULL;
else
thd->spcont= octx;
}
DBUG_RETURN(ret);
}
// Reset lex during parsing, before we parse a sub statement.
void
sp_head::reset_lex(THD *thd)
{
memcpy(&m_lex, &thd->lex, sizeof(LEX)); // Save old one
/* Reset most stuff. The length arguments doesn't matter here. */
lex_start(thd, m_lex.buf, m_lex.end_of_query - m_lex.ptr);
/* We must reset ptr and end_of_query again */
thd->lex.ptr= m_lex.ptr;
thd->lex.end_of_query= m_lex.end_of_query;
/* And keep the SP stuff too */
thd->lex.sphead = m_lex.sphead;
thd->lex.spcont = m_lex.spcont;
/* Clear all lists. (QQ Why isn't this reset by lex_start()?).
We may be overdoing this, but we know for sure that value_list must
be cleared at least. */
thd->lex.col_list.empty();
thd->lex.ref_list.empty();
thd->lex.drop_list.empty();
thd->lex.alter_list.empty();
thd->lex.interval_list.empty();
thd->lex.users_list.empty();
thd->lex.columns.empty();
thd->lex.key_list.empty();
thd->lex.create_list.empty();
thd->lex.insert_list= NULL;
thd->lex.field_list.empty();
thd->lex.value_list.empty();
thd->lex.many_values.empty();
thd->lex.var_list.empty();
thd->lex.param_list.empty();
thd->lex.proc_list.empty();
thd->lex.auxilliary_table_list.empty();
}
// Restore lex during parsing, after we have parsed a sub statement.
void
sp_head::restore_lex(THD *thd)
{
// Update some state in the old one first
m_lex.ptr= thd->lex.ptr;
m_lex.next_state= thd->lex.next_state;
// Collect some data from the sub statement lex.
if (thd->lex.sql_command == SQLCOM_CALL)
{
// It would be slightly faster to keep the list sorted, but we need
// an "insert before" method to do that.
Most of the groundwork for sprint task 729 (implement FUNCTIONs). Expanded the mysql.proc table, reworked the find/create/drop functions completely, added new functions for FUNCTIONs (lotta functions here :), got rid of some unnecessary use of Item_strings while at it. Extended the parser correspondingly, and fiddled around a bit to make SP FUNCTIONs coexist with UDFs. Can now CREATE and DROP FUNCTIONs. Invoking yet to come... Docs/sp-implemented.txt: Updated with info about CASCADE/RESTICT and METHOD, and some answers to questions. include/mysqld_error.h: New error message for misuse of RETURN. mysql-test/install_test_db.sh: Added enum field to mysql.proc to distinguish between FUNCTION and PROCEDURE. mysql-test/r/sp.result: New test for creating and dropping FUNCTIONS. mysql-test/t/sp.test: New test for creating and dropping FUNCTIONS. scripts/mysql_install_db.sh: Added enum field to mysql.proc to distinguish between FUNCTION and PROCEDURE. sql/lex.h: De-UDFed some symbol names, as they are now used for SPs as well. Added RETURN_SYM. sql/share/czech/errmsg.txt: New error message for misuse of RETURN. sql/share/danish/errmsg.txt: New error message for misuse of RETURN. sql/share/dutch/errmsg.txt: New error message for misuse of RETURN. sql/share/english/errmsg.txt: New error message for misuse of RETURN. sql/share/estonian/errmsg.txt: New error message for misuse of RETURN. sql/share/french/errmsg.txt: New error message for misuse of RETURN. sql/share/german/errmsg.txt: New error message for misuse of RETURN. sql/share/greek/errmsg.txt: New error message for misuse of RETURN. sql/share/hungarian/errmsg.txt: New error message for misuse of RETURN. sql/share/italian/errmsg.txt: New error message for misuse of RETURN. sql/share/japanese/errmsg.txt: New error message for misuse of RETURN. sql/share/korean/errmsg.txt: New error message for misuse of RETURN. sql/share/norwegian-ny/errmsg.txt: New error message for misuse of RETURN. sql/share/norwegian/errmsg.txt: New error message for misuse of RETURN. sql/share/polish/errmsg.txt: New error message for misuse of RETURN. sql/share/portuguese/errmsg.txt: New error message for misuse of RETURN. sql/share/romanian/errmsg.txt: New error message for misuse of RETURN. sql/share/russian/errmsg.txt: New error message for misuse of RETURN. sql/share/serbian/errmsg.txt: New error message for misuse of RETURN. sql/share/slovak/errmsg.txt: New error message for misuse of RETURN. sql/share/spanish/errmsg.txt: New error message for misuse of RETURN. sql/share/swedish/errmsg.txt: New error message for misuse of RETURN. sql/share/ukrainian/errmsg.txt: New error message for misuse of RETURN. sql/sp.cc: Major rehack to accomodate FUNCTIONs, and to make it easier to add future in-memory cache of prepared SPs. sql/sp.h: Major rehack to accomodate FUNCTIONs, and to make it easier to add future in-memory cache of prepared SPs. sql/sp_head.cc: Now creates FUNCTIONs too. (And got rid of some unnecessary Item_string use.) sql/sp_head.h: Now creates FUNCTIONs too. (And got rid of some unnecessary Item_string use.) sql/sql_lex.h: New stored FUNCTION commands. sql/sql_parse.cc: Added FUNCTION support ("drop" merged with the old UDF code), and made some additional changes for better error handling (following the sp.cc rehacking). sql/sql_yacc.yy: Some former UDF specific symbols renamed. Added CREATE FUNCTION parsing. DROP FUNCTION had to be partly merged with the old UDF code, because of the similar syntax. RETURN statement added, but still a no-op.
2003-02-21 17:37:05 +01:00
char *proc= thd->lex.udf.name.str;
Most of the groundwork for sprint task 729 (implement FUNCTIONs). Expanded the mysql.proc table, reworked the find/create/drop functions completely, added new functions for FUNCTIONs (lotta functions here :), got rid of some unnecessary use of Item_strings while at it. Extended the parser correspondingly, and fiddled around a bit to make SP FUNCTIONs coexist with UDFs. Can now CREATE and DROP FUNCTIONs. Invoking yet to come... Docs/sp-implemented.txt: Updated with info about CASCADE/RESTICT and METHOD, and some answers to questions. include/mysqld_error.h: New error message for misuse of RETURN. mysql-test/install_test_db.sh: Added enum field to mysql.proc to distinguish between FUNCTION and PROCEDURE. mysql-test/r/sp.result: New test for creating and dropping FUNCTIONS. mysql-test/t/sp.test: New test for creating and dropping FUNCTIONS. scripts/mysql_install_db.sh: Added enum field to mysql.proc to distinguish between FUNCTION and PROCEDURE. sql/lex.h: De-UDFed some symbol names, as they are now used for SPs as well. Added RETURN_SYM. sql/share/czech/errmsg.txt: New error message for misuse of RETURN. sql/share/danish/errmsg.txt: New error message for misuse of RETURN. sql/share/dutch/errmsg.txt: New error message for misuse of RETURN. sql/share/english/errmsg.txt: New error message for misuse of RETURN. sql/share/estonian/errmsg.txt: New error message for misuse of RETURN. sql/share/french/errmsg.txt: New error message for misuse of RETURN. sql/share/german/errmsg.txt: New error message for misuse of RETURN. sql/share/greek/errmsg.txt: New error message for misuse of RETURN. sql/share/hungarian/errmsg.txt: New error message for misuse of RETURN. sql/share/italian/errmsg.txt: New error message for misuse of RETURN. sql/share/japanese/errmsg.txt: New error message for misuse of RETURN. sql/share/korean/errmsg.txt: New error message for misuse of RETURN. sql/share/norwegian-ny/errmsg.txt: New error message for misuse of RETURN. sql/share/norwegian/errmsg.txt: New error message for misuse of RETURN. sql/share/polish/errmsg.txt: New error message for misuse of RETURN. sql/share/portuguese/errmsg.txt: New error message for misuse of RETURN. sql/share/romanian/errmsg.txt: New error message for misuse of RETURN. sql/share/russian/errmsg.txt: New error message for misuse of RETURN. sql/share/serbian/errmsg.txt: New error message for misuse of RETURN. sql/share/slovak/errmsg.txt: New error message for misuse of RETURN. sql/share/spanish/errmsg.txt: New error message for misuse of RETURN. sql/share/swedish/errmsg.txt: New error message for misuse of RETURN. sql/share/ukrainian/errmsg.txt: New error message for misuse of RETURN. sql/sp.cc: Major rehack to accomodate FUNCTIONs, and to make it easier to add future in-memory cache of prepared SPs. sql/sp.h: Major rehack to accomodate FUNCTIONs, and to make it easier to add future in-memory cache of prepared SPs. sql/sp_head.cc: Now creates FUNCTIONs too. (And got rid of some unnecessary Item_string use.) sql/sp_head.h: Now creates FUNCTIONs too. (And got rid of some unnecessary Item_string use.) sql/sql_lex.h: New stored FUNCTION commands. sql/sql_parse.cc: Added FUNCTION support ("drop" merged with the old UDF code), and made some additional changes for better error handling (following the sp.cc rehacking). sql/sql_yacc.yy: Some former UDF specific symbols renamed. Added CREATE FUNCTION parsing. DROP FUNCTION had to be partly merged with the old UDF code, because of the similar syntax. RETURN statement added, but still a no-op.
2003-02-21 17:37:05 +01:00
List_iterator_fast<char *> li(m_calls);
char **it;
Most of the groundwork for sprint task 729 (implement FUNCTIONs). Expanded the mysql.proc table, reworked the find/create/drop functions completely, added new functions for FUNCTIONs (lotta functions here :), got rid of some unnecessary use of Item_strings while at it. Extended the parser correspondingly, and fiddled around a bit to make SP FUNCTIONs coexist with UDFs. Can now CREATE and DROP FUNCTIONs. Invoking yet to come... Docs/sp-implemented.txt: Updated with info about CASCADE/RESTICT and METHOD, and some answers to questions. include/mysqld_error.h: New error message for misuse of RETURN. mysql-test/install_test_db.sh: Added enum field to mysql.proc to distinguish between FUNCTION and PROCEDURE. mysql-test/r/sp.result: New test for creating and dropping FUNCTIONS. mysql-test/t/sp.test: New test for creating and dropping FUNCTIONS. scripts/mysql_install_db.sh: Added enum field to mysql.proc to distinguish between FUNCTION and PROCEDURE. sql/lex.h: De-UDFed some symbol names, as they are now used for SPs as well. Added RETURN_SYM. sql/share/czech/errmsg.txt: New error message for misuse of RETURN. sql/share/danish/errmsg.txt: New error message for misuse of RETURN. sql/share/dutch/errmsg.txt: New error message for misuse of RETURN. sql/share/english/errmsg.txt: New error message for misuse of RETURN. sql/share/estonian/errmsg.txt: New error message for misuse of RETURN. sql/share/french/errmsg.txt: New error message for misuse of RETURN. sql/share/german/errmsg.txt: New error message for misuse of RETURN. sql/share/greek/errmsg.txt: New error message for misuse of RETURN. sql/share/hungarian/errmsg.txt: New error message for misuse of RETURN. sql/share/italian/errmsg.txt: New error message for misuse of RETURN. sql/share/japanese/errmsg.txt: New error message for misuse of RETURN. sql/share/korean/errmsg.txt: New error message for misuse of RETURN. sql/share/norwegian-ny/errmsg.txt: New error message for misuse of RETURN. sql/share/norwegian/errmsg.txt: New error message for misuse of RETURN. sql/share/polish/errmsg.txt: New error message for misuse of RETURN. sql/share/portuguese/errmsg.txt: New error message for misuse of RETURN. sql/share/romanian/errmsg.txt: New error message for misuse of RETURN. sql/share/russian/errmsg.txt: New error message for misuse of RETURN. sql/share/serbian/errmsg.txt: New error message for misuse of RETURN. sql/share/slovak/errmsg.txt: New error message for misuse of RETURN. sql/share/spanish/errmsg.txt: New error message for misuse of RETURN. sql/share/swedish/errmsg.txt: New error message for misuse of RETURN. sql/share/ukrainian/errmsg.txt: New error message for misuse of RETURN. sql/sp.cc: Major rehack to accomodate FUNCTIONs, and to make it easier to add future in-memory cache of prepared SPs. sql/sp.h: Major rehack to accomodate FUNCTIONs, and to make it easier to add future in-memory cache of prepared SPs. sql/sp_head.cc: Now creates FUNCTIONs too. (And got rid of some unnecessary Item_string use.) sql/sp_head.h: Now creates FUNCTIONs too. (And got rid of some unnecessary Item_string use.) sql/sql_lex.h: New stored FUNCTION commands. sql/sql_parse.cc: Added FUNCTION support ("drop" merged with the old UDF code), and made some additional changes for better error handling (following the sp.cc rehacking). sql/sql_yacc.yy: Some former UDF specific symbols renamed. Added CREATE FUNCTION parsing. DROP FUNCTION had to be partly merged with the old UDF code, because of the similar syntax. RETURN statement added, but still a no-op.
2003-02-21 17:37:05 +01:00
while ((it= li++))
if (strcasecmp(proc, *it) == 0)
break;
if (! it)
Most of the groundwork for sprint task 729 (implement FUNCTIONs). Expanded the mysql.proc table, reworked the find/create/drop functions completely, added new functions for FUNCTIONs (lotta functions here :), got rid of some unnecessary use of Item_strings while at it. Extended the parser correspondingly, and fiddled around a bit to make SP FUNCTIONs coexist with UDFs. Can now CREATE and DROP FUNCTIONs. Invoking yet to come... Docs/sp-implemented.txt: Updated with info about CASCADE/RESTICT and METHOD, and some answers to questions. include/mysqld_error.h: New error message for misuse of RETURN. mysql-test/install_test_db.sh: Added enum field to mysql.proc to distinguish between FUNCTION and PROCEDURE. mysql-test/r/sp.result: New test for creating and dropping FUNCTIONS. mysql-test/t/sp.test: New test for creating and dropping FUNCTIONS. scripts/mysql_install_db.sh: Added enum field to mysql.proc to distinguish between FUNCTION and PROCEDURE. sql/lex.h: De-UDFed some symbol names, as they are now used for SPs as well. Added RETURN_SYM. sql/share/czech/errmsg.txt: New error message for misuse of RETURN. sql/share/danish/errmsg.txt: New error message for misuse of RETURN. sql/share/dutch/errmsg.txt: New error message for misuse of RETURN. sql/share/english/errmsg.txt: New error message for misuse of RETURN. sql/share/estonian/errmsg.txt: New error message for misuse of RETURN. sql/share/french/errmsg.txt: New error message for misuse of RETURN. sql/share/german/errmsg.txt: New error message for misuse of RETURN. sql/share/greek/errmsg.txt: New error message for misuse of RETURN. sql/share/hungarian/errmsg.txt: New error message for misuse of RETURN. sql/share/italian/errmsg.txt: New error message for misuse of RETURN. sql/share/japanese/errmsg.txt: New error message for misuse of RETURN. sql/share/korean/errmsg.txt: New error message for misuse of RETURN. sql/share/norwegian-ny/errmsg.txt: New error message for misuse of RETURN. sql/share/norwegian/errmsg.txt: New error message for misuse of RETURN. sql/share/polish/errmsg.txt: New error message for misuse of RETURN. sql/share/portuguese/errmsg.txt: New error message for misuse of RETURN. sql/share/romanian/errmsg.txt: New error message for misuse of RETURN. sql/share/russian/errmsg.txt: New error message for misuse of RETURN. sql/share/serbian/errmsg.txt: New error message for misuse of RETURN. sql/share/slovak/errmsg.txt: New error message for misuse of RETURN. sql/share/spanish/errmsg.txt: New error message for misuse of RETURN. sql/share/swedish/errmsg.txt: New error message for misuse of RETURN. sql/share/ukrainian/errmsg.txt: New error message for misuse of RETURN. sql/sp.cc: Major rehack to accomodate FUNCTIONs, and to make it easier to add future in-memory cache of prepared SPs. sql/sp.h: Major rehack to accomodate FUNCTIONs, and to make it easier to add future in-memory cache of prepared SPs. sql/sp_head.cc: Now creates FUNCTIONs too. (And got rid of some unnecessary Item_string use.) sql/sp_head.h: Now creates FUNCTIONs too. (And got rid of some unnecessary Item_string use.) sql/sql_lex.h: New stored FUNCTION commands. sql/sql_parse.cc: Added FUNCTION support ("drop" merged with the old UDF code), and made some additional changes for better error handling (following the sp.cc rehacking). sql/sql_yacc.yy: Some former UDF specific symbols renamed. Added CREATE FUNCTION parsing. DROP FUNCTION had to be partly merged with the old UDF code, because of the similar syntax. RETURN statement added, but still a no-op.
2003-02-21 17:37:05 +01:00
m_calls.push_back(&proc);
}
// Merge used tables
// QQ ...or just open tables in thd->open_tables?
// This is not entirerly clear at the moment, but for now, we collect
// tables here.
for (SELECT_LEX *sl= thd->lex.all_selects_list ;
sl ;
sl= sl->next_select())
{
for (TABLE_LIST *tables= sl->get_table_list() ;
tables ;
tables= tables->next)
{
List_iterator_fast<char *> li(m_tables);
char **tb;
while ((tb= li++))
if (strcasecmp(tables->real_name, *tb) == 0)
break;
if (! tb)
m_tables.push_back(&tables->real_name);
}
}
memcpy(&thd->lex, &m_lex, sizeof(LEX)); // Restore lex
}
void
sp_head::push_backpatch(sp_instr *i, sp_label_t *lab)
{
bp_t *bp= (bp_t *)my_malloc(sizeof(bp_t), MYF(MY_WME));
if (bp)
{
bp->lab= lab;
bp->instr= i;
(void)m_backpatch.push_front(bp);
}
}
void
sp_head::backpatch(sp_label_t *lab)
{
bp_t *bp;
uint dest= instructions();
List_iterator_fast<bp_t> li(m_backpatch);
while ((bp= li++))
if (bp->lab == lab)
{
sp_instr_jump *i= static_cast<sp_instr_jump *>(bp->instr);
i->set_destination(dest);
}
}
// ------------------------------------------------------------------
//
// sp_instr_stmt
//
int
sp_instr_stmt::execute(THD *thd, uint *nextp)
{
DBUG_ENTER("sp_instr_stmt::execute");
DBUG_PRINT("info", ("command: %d", m_lex.sql_command));
LEX olex; // The other lex
Fixed some basic error handling for SP functions in mysql_execute_command(). include/mysqld_error.h: Added error codes for SPs sql/mysql_priv.h: Changed return value of mysql_execute_command() from void to int; need to be able to detect if executions of substatements in SPs failed. sql/share/czech/errmsg.txt: Added error messages for SPs. sql/share/danish/errmsg.txt: Added error messages for SPs. sql/share/dutch/errmsg.txt: Added error messages for SPs. sql/share/english/errmsg.txt: Added error messages for SPs. sql/share/estonian/errmsg.txt: Added error messages for SPs. sql/share/french/errmsg.txt: Added error messages for SPs. sql/share/german/errmsg.txt: Added error messages for SPs. sql/share/greek/errmsg.txt: Added error messages for SPs. sql/share/hungarian/errmsg.txt: Added error messages for SPs. sql/share/italian/errmsg.txt: Added error messages for SPs. sql/share/japanese/errmsg.txt: Added error messages for SPs. sql/share/korean/errmsg.txt: Added error messages for SPs. sql/share/norwegian-ny/errmsg.txt: Added error messages for SPs. sql/share/norwegian/errmsg.txt: Added error messages for SPs. sql/share/polish/errmsg.txt: Added error messages for SPs. sql/share/portuguese/errmsg.txt: Added error messages for SPs. sql/share/romanian/errmsg.txt: Added error messages for SPs. sql/share/russian/errmsg.txt: Added error messages for SPs. sql/share/serbian/errmsg.txt: Added error messages for SPs. sql/share/slovak/errmsg.txt: Added error messages for SPs. sql/share/spanish/errmsg.txt: Added error messages for SPs. sql/share/swedish/errmsg.txt: Added error messages for SPs. sql/share/ukrainian/errmsg.txt: Added error messages for SPs. sql/sp_head.cc: Moved net.no_send_ok fiddling to sql_parse.cc. Check if mysql_execute_command() failed. sql/sql_parse.cc: Changed return value of mysql_execute_command() from void to int; need to be able to detect if executions of substatements in SPs failed. Fixed all returns accordingly. Added error checks for SQLCOM_CREATE_PROCEDURE, CALL, ALTER_PROCEDURE, and DROP_PROCEDURE.
2003-01-15 15:39:36 +01:00
int res;
memcpy(&olex, &thd->lex, sizeof(LEX)); // Save the other lex
memcpy(&thd->lex, &m_lex, sizeof(LEX)); // Use my own lex
thd->lex.thd = thd;
Fixed some basic error handling for SP functions in mysql_execute_command(). include/mysqld_error.h: Added error codes for SPs sql/mysql_priv.h: Changed return value of mysql_execute_command() from void to int; need to be able to detect if executions of substatements in SPs failed. sql/share/czech/errmsg.txt: Added error messages for SPs. sql/share/danish/errmsg.txt: Added error messages for SPs. sql/share/dutch/errmsg.txt: Added error messages for SPs. sql/share/english/errmsg.txt: Added error messages for SPs. sql/share/estonian/errmsg.txt: Added error messages for SPs. sql/share/french/errmsg.txt: Added error messages for SPs. sql/share/german/errmsg.txt: Added error messages for SPs. sql/share/greek/errmsg.txt: Added error messages for SPs. sql/share/hungarian/errmsg.txt: Added error messages for SPs. sql/share/italian/errmsg.txt: Added error messages for SPs. sql/share/japanese/errmsg.txt: Added error messages for SPs. sql/share/korean/errmsg.txt: Added error messages for SPs. sql/share/norwegian-ny/errmsg.txt: Added error messages for SPs. sql/share/norwegian/errmsg.txt: Added error messages for SPs. sql/share/polish/errmsg.txt: Added error messages for SPs. sql/share/portuguese/errmsg.txt: Added error messages for SPs. sql/share/romanian/errmsg.txt: Added error messages for SPs. sql/share/russian/errmsg.txt: Added error messages for SPs. sql/share/serbian/errmsg.txt: Added error messages for SPs. sql/share/slovak/errmsg.txt: Added error messages for SPs. sql/share/spanish/errmsg.txt: Added error messages for SPs. sql/share/swedish/errmsg.txt: Added error messages for SPs. sql/share/ukrainian/errmsg.txt: Added error messages for SPs. sql/sp_head.cc: Moved net.no_send_ok fiddling to sql_parse.cc. Check if mysql_execute_command() failed. sql/sql_parse.cc: Changed return value of mysql_execute_command() from void to int; need to be able to detect if executions of substatements in SPs failed. Fixed all returns accordingly. Added error checks for SQLCOM_CREATE_PROCEDURE, CALL, ALTER_PROCEDURE, and DROP_PROCEDURE.
2003-01-15 15:39:36 +01:00
res= mysql_execute_command(thd);
if (thd->lock || thd->open_tables || thd->derived_tables)
{
thd->proc_info="closing tables";
close_thread_tables(thd); /* Free tables */
}
memcpy(&thd->lex, &olex, sizeof(LEX)); // Restore the other lex
*nextp = m_ip+1;
DBUG_RETURN(res);
}
//
// sp_instr_set
//
int
sp_instr_set::execute(THD *thd, uint *nextp)
{
DBUG_ENTER("sp_instr_set::execute");
DBUG_PRINT("info", ("offset: %u", m_offset));
thd->spcont->set_item(m_offset, eval_func_item(thd, m_value, m_type));
*nextp = m_ip+1;
DBUG_RETURN(0);
}
//
// sp_instr_jump_if
//
int
sp_instr_jump_if::execute(THD *thd, uint *nextp)
{
DBUG_ENTER("sp_instr_jump_if::execute");
DBUG_PRINT("info", ("destination: %u", m_dest));
Item *it= eval_func_item(thd, m_expr, MYSQL_TYPE_TINY);
if (it->val_int())
*nextp = m_dest;
else
*nextp = m_ip+1;
DBUG_RETURN(0);
}
//
// sp_instr_jump_if_not
//
int
sp_instr_jump_if_not::execute(THD *thd, uint *nextp)
{
DBUG_ENTER("sp_instr_jump_if_not::execute");
DBUG_PRINT("info", ("destination: %u", m_dest));
Item *it= eval_func_item(thd, m_expr, MYSQL_TYPE_TINY);
if (! it->val_int())
*nextp = m_dest;
else
*nextp = m_ip+1;
DBUG_RETURN(0);
}
//
// sp_instr_return
//
int
sp_instr_return::execute(THD *thd, uint *nextp)
{
DBUG_ENTER("sp_instr_return::execute");
thd->spcont->set_result(eval_func_item(thd, m_value, m_type));
*nextp= UINT_MAX;
DBUG_RETURN(0);
}