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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 */
#include "mysql_priv.h"
#include "sp.h"
#include "sp_head.h"
// Finds the SP 'name'. Currently this always reads from the database
// and prepares (parse) it, but in the future it will first look in
// the in-memory cache for SPs. (And store newly prepared SPs there of
// course.)
sp_head *
sp_find(THD *thd, Item_string *iname)
{
extern int yyparse(void *thd);
LEX *tmplex;
TABLE *table;
TABLE_LIST tables;
const char *defstr;
String *name;
sp_head *sp = NULL;
name = iname->const_string();
memset(&tables, 0, sizeof(tables));
tables.db= (char*)"mysql";
tables.real_name= tables.alias= (char*)"proc";
if (! (table= open_ltable(thd, &tables, TL_READ)))
return NULL;
if (table->file->index_read_idx(table->record[0], 0,
(byte*)name->c_ptr(), name->length(),
HA_READ_KEY_EXACT))
goto done;
if ((defstr= get_field(&thd->mem_root, table, 1)) == NULL)
goto done;
// QQ Set up our own mem_root here???
tmplex= lex_start(thd, (uchar*)defstr, strlen(defstr));
if (yyparse(thd) || thd->fatal_error || tmplex->sphead == NULL)
goto done; // Error
else
sp = tmplex->sphead;
done:
if (table)
close_thread_tables(thd);
return sp;
}
int
sp_create_procedure(THD *thd, char *name, uint namelen, char *def, uint deflen)
{
int ret= 0;
TABLE *table;
TABLE_LIST tables;
memset(&tables, 0, sizeof(tables));
tables.db= (char*)"mysql";
tables.real_name= tables.alias= (char*)"proc";
/* Allow creation of procedures even if we can't open proc table */
if (! (table= open_ltable(thd, &tables, TL_WRITE)))
{
ret= -1;
goto done;
}
restore_record(table, 2); // Get default values for fields
table->field[0]->store(name, namelen, default_charset_info);
table->field[1]->store(def, deflen, default_charset_info);
ret= table->file->write_row(table->record[0]);
done:
close_thread_tables(thd);
return ret;
}
int
sp_drop(THD *thd, char *name, uint namelen)
{
TABLE *table;
TABLE_LIST tables;
tables.db= (char *)"mysql";
tables.real_name= tables.alias= (char *)"proc";
if (! (table= open_ltable(thd, &tables, TL_WRITE)))
goto err;
if (! table->file->index_read_idx(table->record[0], 0,
(byte *)name, namelen,
HA_READ_KEY_EXACT))
{
int error;
if ((error= table->file->delete_row(table->record[0])))
table->file->print_error(error, MYF(0));
}
close_thread_tables(thd);
return 0;
err:
close_thread_tables(thd);
return -1;
}
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