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sp.cc
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/*
Copyright (c) 2002, 2015, Oracle and/or its affiliates.
Copyright (c) 2009, 2015, MariaDB
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 */
#include <my_global.h>
#include "sql_priv.h"
#include "unireg.h"
#include "sp.h"
#include "sql_base.h" // close_thread_tables
#include "sql_parse.h" // parse_sql
#include "key.h" // key_copy
#include "sql_show.h" // append_definer, append_identifier
#include "sql_db.h" // get_default_db_collation, mysql_opt_change_db,
// mysql_change_db, check_db_dir_existence,
// load_db_opt_by_name
#include "sql_table.h" // write_bin_log
#include "sql_acl.h" // SUPER_ACL
#include "sp_head.h"
#include "sp_cache.h"
#include "lock.h" // lock_object_name
#include <my_user.h>
/* Used in error handling only */
#define SP_TYPE_STRING(type) stored_procedure_type_to_str(type)
static int
db_load_routine(THD *thd, stored_procedure_type type, const sp_name *name,
sp_head **sphp,
sql_mode_t sql_mode, const char *params, const char *returns,
const char *body, st_sp_chistics &chistics,
LEX_STRING *definer_user_name, LEX_STRING *definer_host_name,
longlong created, longlong modified,
Stored_program_creation_ctx *creation_ctx);
static const
TABLE_FIELD_TYPE proc_table_fields[MYSQL_PROC_FIELD_COUNT] =
{
{
{ C_STRING_WITH_LEN("db") },
{ C_STRING_WITH_LEN("char(64)") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("name") },
{ C_STRING_WITH_LEN("char(64)") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("type") },
{ C_STRING_WITH_LEN("enum('FUNCTION','PROCEDURE')") },
{ NULL, 0 }
},
{
{ C_STRING_WITH_LEN("specific_name") },
{ C_STRING_WITH_LEN("char(64)") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("language") },
{ C_STRING_WITH_LEN("enum('SQL')") },
{ NULL, 0 }
},
{
{ C_STRING_WITH_LEN("sql_data_access") },
{ C_STRING_WITH_LEN("enum('CONTAINS_SQL','NO_SQL','READS_SQL_DATA','MODIFIES_SQL_DATA')") },
{ NULL, 0 }
},
{
{ C_STRING_WITH_LEN("is_deterministic") },
{ C_STRING_WITH_LEN("enum('YES','NO')") },
{ NULL, 0 }
},
{
{ C_STRING_WITH_LEN("security_type") },
{ C_STRING_WITH_LEN("enum('INVOKER','DEFINER')") },
{ NULL, 0 }
},
{
{ C_STRING_WITH_LEN("param_list") },
{ C_STRING_WITH_LEN("blob") },
{ NULL, 0 }
},
{
{ C_STRING_WITH_LEN("returns") },
{ C_STRING_WITH_LEN("longblob") },
{ NULL, 0 }
},
{
{ C_STRING_WITH_LEN("body") },
{ C_STRING_WITH_LEN("longblob") },
{ NULL, 0 }
},
{
{ C_STRING_WITH_LEN("definer") },
{ C_STRING_WITH_LEN("char(") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("created") },
{ C_STRING_WITH_LEN("timestamp") },
{ NULL, 0 }
},
{
{ C_STRING_WITH_LEN("modified") },
{ C_STRING_WITH_LEN("timestamp") },
{ NULL, 0 }
},
{
{ C_STRING_WITH_LEN("sql_mode") },
{ C_STRING_WITH_LEN("set('REAL_AS_FLOAT','PIPES_AS_CONCAT','ANSI_QUOTES',"
"'IGNORE_SPACE','IGNORE_BAD_TABLE_OPTIONS','ONLY_FULL_GROUP_BY',"
"'NO_UNSIGNED_SUBTRACTION',"
"'NO_DIR_IN_CREATE','POSTGRESQL','ORACLE','MSSQL','DB2','MAXDB',"
"'NO_KEY_OPTIONS','NO_TABLE_OPTIONS','NO_FIELD_OPTIONS','MYSQL323','MYSQL40',"
"'ANSI','NO_AUTO_VALUE_ON_ZERO','NO_BACKSLASH_ESCAPES','STRICT_TRANS_TABLES',"
"'STRICT_ALL_TABLES','NO_ZERO_IN_DATE','NO_ZERO_DATE','INVALID_DATES',"
"'ERROR_FOR_DIVISION_BY_ZERO','TRADITIONAL','NO_AUTO_CREATE_USER',"
"'HIGH_NOT_PRECEDENCE','NO_ENGINE_SUBSTITUTION','PAD_CHAR_TO_FULL_LENGTH')") },
{ NULL, 0 }
},
{
{ C_STRING_WITH_LEN("comment") },
{ C_STRING_WITH_LEN("text") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("character_set_client") },
{ C_STRING_WITH_LEN("char(32)") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("collation_connection") },
{ C_STRING_WITH_LEN("char(32)") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("db_collation") },
{ C_STRING_WITH_LEN("char(32)") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("body_utf8") },
{ C_STRING_WITH_LEN("longblob") },
{ NULL, 0 }
}
};
static const TABLE_FIELD_DEF
proc_table_def= {MYSQL_PROC_FIELD_COUNT, proc_table_fields, 0, (uint*) 0 };
/*************************************************************************/
/**
Stored_routine_creation_ctx -- creation context of stored routines
(stored procedures and functions).
*/
class Stored_routine_creation_ctx : public Stored_program_creation_ctx,
public Sql_alloc
{
public:
static Stored_routine_creation_ctx *
load_from_db(THD *thd, const sp_name *name, TABLE *proc_tbl);
public:
virtual Stored_program_creation_ctx *clone(MEM_ROOT *mem_root)
{
return new (mem_root) Stored_routine_creation_ctx(m_client_cs,
m_connection_cl,
m_db_cl);
}
protected:
virtual Object_creation_ctx *create_backup_ctx(THD *thd) const
{
DBUG_ENTER("Stored_routine_creation_ctx::create_backup_ctx");
DBUG_RETURN(new Stored_routine_creation_ctx(thd));
}
private:
Stored_routine_creation_ctx(THD *thd)
: Stored_program_creation_ctx(thd)
{ }
Stored_routine_creation_ctx(CHARSET_INFO *client_cs,
CHARSET_INFO *connection_cl,
CHARSET_INFO *db_cl)
: Stored_program_creation_ctx(client_cs, connection_cl, db_cl)
{ }
};
/**************************************************************************
Stored_routine_creation_ctx implementation.
**************************************************************************/
bool load_charset(MEM_ROOT *mem_root,
Field *field,
CHARSET_INFO *dflt_cs,
CHARSET_INFO **cs)
{
String cs_name;
if (get_field(mem_root, field, &cs_name))
{
*cs= dflt_cs;
return TRUE;
}
*cs= get_charset_by_csname(cs_name.c_ptr(), MY_CS_PRIMARY, MYF(0));
if (*cs == NULL)
{
*cs= dflt_cs;
return TRUE;
}
return FALSE;
}
/*************************************************************************/
bool load_collation(MEM_ROOT *mem_root,
Field *field,
CHARSET_INFO *dflt_cl,
CHARSET_INFO **cl)
{
String cl_name;
if (get_field(mem_root, field, &cl_name))
{
*cl= dflt_cl;
return TRUE;
}
*cl= get_charset_by_name(cl_name.c_ptr(), MYF(0));
if (*cl == NULL)
{
*cl= dflt_cl;
return TRUE;
}
return FALSE;
}
/*************************************************************************/
Stored_routine_creation_ctx *
Stored_routine_creation_ctx::load_from_db(THD *thd,
const sp_name *name,
TABLE *proc_tbl)
{
/* Load character set/collation attributes. */
CHARSET_INFO *client_cs;
CHARSET_INFO *connection_cl;
CHARSET_INFO *db_cl;
const char *db_name= thd->strmake(name->m_db.str, name->m_db.length);
const char *sr_name= thd->strmake(name->m_name.str, name->m_name.length);
bool invalid_creation_ctx= FALSE;
if (load_charset(thd->mem_root,
proc_tbl->field[MYSQL_PROC_FIELD_CHARACTER_SET_CLIENT],
thd->variables.character_set_client,
&client_cs))
{
sql_print_warning("Stored routine '%s'.'%s': invalid value "
"in column mysql.proc.character_set_client.",
(const char *) db_name,
(const char *) sr_name);
invalid_creation_ctx= TRUE;
}
if (load_collation(thd->mem_root,
proc_tbl->field[MYSQL_PROC_FIELD_COLLATION_CONNECTION],
thd->variables.collation_connection,
&connection_cl))
{
sql_print_warning("Stored routine '%s'.'%s': invalid value "
"in column mysql.proc.collation_connection.",
(const char *) db_name,
(const char *) sr_name);
invalid_creation_ctx= TRUE;
}
if (load_collation(thd->mem_root,
proc_tbl->field[MYSQL_PROC_FIELD_DB_COLLATION],
NULL,
&db_cl))
{
sql_print_warning("Stored routine '%s'.'%s': invalid value "
"in column mysql.proc.db_collation.",
(const char *) db_name,
(const char *) sr_name);
invalid_creation_ctx= TRUE;
}
if (invalid_creation_ctx)
{
push_warning_printf(thd,
Sql_condition::WARN_LEVEL_WARN,
ER_SR_INVALID_CREATION_CTX,
ER_THD(thd, ER_SR_INVALID_CREATION_CTX),
(const char *) db_name,
(const char *) sr_name);
}
/*
If we failed to retrieve the database collation, load the default one
from the disk.
*/
if (!db_cl)
db_cl= get_default_db_collation(thd, name->m_db.str);
/* Create the context. */
return new Stored_routine_creation_ctx(client_cs, connection_cl, db_cl);
}
/*************************************************************************/
class Proc_table_intact : public Table_check_intact
{
private:
bool m_print_once;
public:
Proc_table_intact() : m_print_once(TRUE) {}
protected:
void report_error(uint code, const char *fmt, ...);
};
/**
Report failure to validate the mysql.proc table definition.
Print a message to the error log only once.
*/
void Proc_table_intact::report_error(uint code, const char *fmt, ...)
{
va_list args;
char buf[512];
va_start(args, fmt);
my_vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
if (code)
my_message(code, buf, MYF(0));
else
my_error(ER_CANNOT_LOAD_FROM_TABLE_V2, MYF(0), "mysql", "proc");
if (m_print_once)
{
m_print_once= FALSE;
sql_print_error("%s", buf);
}
};
/** Single instance used to control printing to the error log. */
static Proc_table_intact proc_table_intact;
/**
Open the mysql.proc table for read.
@param thd Thread context
@param backup Pointer to Open_tables_state instance where information about
currently open tables will be saved, and from which will be
restored when we will end work with mysql.proc.
@retval
0 Error
@retval
\# Pointer to TABLE object of mysql.proc
*/
TABLE *open_proc_table_for_read(THD *thd, Open_tables_backup *backup)
{
TABLE_LIST table;
DBUG_ENTER("open_proc_table_for_read");
table.init_one_table("mysql", 5, "proc", 4, "proc", TL_READ);
if (open_system_tables_for_read(thd, &table, backup))
DBUG_RETURN(NULL);
if (!proc_table_intact.check(table.table, &proc_table_def))
DBUG_RETURN(table.table);
close_system_tables(thd, backup);
DBUG_RETURN(NULL);
}
/**
Open the mysql.proc table for update.
@param thd Thread context
@note
Table opened with this call should closed using close_thread_tables().
@retval
0 Error
@retval
\# Pointer to TABLE object of mysql.proc
*/
static TABLE *open_proc_table_for_update(THD *thd)
{
TABLE_LIST table_list;
TABLE *table;
MDL_savepoint mdl_savepoint= thd->mdl_context.mdl_savepoint();
DBUG_ENTER("open_proc_table_for_update");
table_list.init_one_table("mysql", 5, "proc", 4, "proc", TL_WRITE);
if (!(table= open_system_table_for_update(thd, &table_list)))
DBUG_RETURN(NULL);
if (!proc_table_intact.check(table, &proc_table_def))
DBUG_RETURN(table);
close_thread_tables(thd);
thd->mdl_context.rollback_to_savepoint(mdl_savepoint);
DBUG_RETURN(NULL);
}
/**
Find row in open mysql.proc table representing stored routine.
@param thd Thread context
@param type Type of routine to find (function or procedure)
@param name Name of routine
@param table TABLE object for open mysql.proc table.
@retval
SP_OK Routine found
@retval
SP_KEY_NOT_FOUND No routine with given name
*/
static int
db_find_routine_aux(THD *thd, stored_procedure_type type, const sp_name *name,
TABLE *table)
{
uchar key[MAX_KEY_LENGTH]; // db, name, optional key length type
DBUG_ENTER("db_find_routine_aux");
DBUG_PRINT("enter", ("type: %d name: %.*s",
type, (int) name->m_name.length, name->m_name.str));
/*
Create key to find row. We have to use field->store() to be able to
handle VARCHAR and CHAR fields.
Assumption here is that the three first fields in the table are
'db', 'name' and 'type' and the first key is the primary key over the
same fields.
*/
if (name->m_name.length > table->field[1]->field_length)
DBUG_RETURN(SP_KEY_NOT_FOUND);
table->field[0]->store(name->m_db.str, name->m_db.length, &my_charset_bin);
table->field[1]->store(name->m_name.str, name->m_name.length,
&my_charset_bin);
table->field[2]->store((longlong) type, TRUE);
key_copy(key, table->record[0], table->key_info,
table->key_info->key_length);
if (table->file->ha_index_read_idx_map(table->record[0], 0, key,
HA_WHOLE_KEY,
HA_READ_KEY_EXACT))
DBUG_RETURN(SP_KEY_NOT_FOUND);
DBUG_RETURN(SP_OK);
}
/**
Find routine definition in mysql.proc table and create corresponding
sp_head object for it.
@param thd Thread context
@param type Type of routine (TYPE_ENUM_PROCEDURE/...)
@param name Name of routine
@param sphp Out parameter in which pointer to created sp_head
object is returned (0 in case of error).
@note
This function may damage current LEX during execution, so it is good
idea to create temporary LEX and make it active before calling it.
@retval
0 Success
@retval
non-0 Error (may be one of special codes like SP_KEY_NOT_FOUND)
*/
static int
db_find_routine(THD *thd, stored_procedure_type type, const sp_name *name,
sp_head **sphp)
{
TABLE *table;
const char *params, *returns, *body;
int ret;
const char *definer;
longlong created;
longlong modified;
st_sp_chistics chistics;
char *ptr;
uint length;
char buff[65];
String str(buff, sizeof(buff), &my_charset_bin);
bool saved_time_zone_used= thd->time_zone_used;
sql_mode_t sql_mode, saved_mode= thd->variables.sql_mode;
Open_tables_backup open_tables_state_backup;
Stored_program_creation_ctx *creation_ctx;
char definer_user_name_holder[USERNAME_LENGTH + 1];
LEX_STRING definer_user_name= { definer_user_name_holder, USERNAME_LENGTH };
char definer_host_name_holder[HOSTNAME_LENGTH + 1];
LEX_STRING definer_host_name= { definer_host_name_holder, HOSTNAME_LENGTH };
DBUG_ENTER("db_find_routine");
DBUG_PRINT("enter", ("type: %d name: %.*s",
type, (int) name->m_name.length, name->m_name.str));
*sphp= 0; // In case of errors
if (!(table= open_proc_table_for_read(thd, &open_tables_state_backup)))
DBUG_RETURN(SP_OPEN_TABLE_FAILED);
/* Reset sql_mode during data dictionary operations. */
thd->variables.sql_mode= 0;
if ((ret= db_find_routine_aux(thd, type, name, table)) != SP_OK)
goto done;
if (table->s->fields < MYSQL_PROC_FIELD_COUNT)
{
ret= SP_GET_FIELD_FAILED;
goto done;
}
bzero((char *)&chistics, sizeof(chistics));
if ((ptr= get_field(thd->mem_root,
table->field[MYSQL_PROC_FIELD_ACCESS])) == NULL)
{
ret= SP_GET_FIELD_FAILED;
goto done;
}
switch (ptr[0]) {
case 'N':
chistics.daccess= SP_NO_SQL;
break;
case 'C':
chistics.daccess= SP_CONTAINS_SQL;
break;
case 'R':
chistics.daccess= SP_READS_SQL_DATA;
break;
case 'M':
chistics.daccess= SP_MODIFIES_SQL_DATA;
break;
default:
chistics.daccess= SP_DEFAULT_ACCESS_MAPPING;
}
if ((ptr= get_field(thd->mem_root,
table->field[MYSQL_PROC_FIELD_DETERMINISTIC])) == NULL)
{
ret= SP_GET_FIELD_FAILED;
goto done;
}
chistics.detistic= (ptr[0] == 'N' ? FALSE : TRUE);
if ((ptr= get_field(thd->mem_root,
table->field[MYSQL_PROC_FIELD_SECURITY_TYPE])) == NULL)
{
ret= SP_GET_FIELD_FAILED;
goto done;
}
chistics.suid= (ptr[0] == 'I' ? SP_IS_NOT_SUID : SP_IS_SUID);
if ((params= get_field(thd->mem_root,
table->field[MYSQL_PROC_FIELD_PARAM_LIST])) == NULL)
{
params= "";
}
if (type == TYPE_ENUM_PROCEDURE)
returns= "";
else if ((returns= get_field(thd->mem_root,
table->field[MYSQL_PROC_FIELD_RETURNS])) == NULL)
{
ret= SP_GET_FIELD_FAILED;
goto done;
}
if ((body= get_field(thd->mem_root,
table->field[MYSQL_PROC_FIELD_BODY])) == NULL)
{
ret= SP_GET_FIELD_FAILED;
goto done;
}
// Get additional information
if ((definer= get_field(thd->mem_root,
table->field[MYSQL_PROC_FIELD_DEFINER])) == NULL)
{
ret= SP_GET_FIELD_FAILED;
goto done;
}
modified= table->field[MYSQL_PROC_FIELD_MODIFIED]->val_int();
created= table->field[MYSQL_PROC_FIELD_CREATED]->val_int();
sql_mode= (ulong) table->field[MYSQL_PROC_FIELD_SQL_MODE]->val_int();
table->field[MYSQL_PROC_FIELD_COMMENT]->val_str(&str, &str);
ptr= 0;
if ((length= str.length()))
ptr= thd->strmake(str.ptr(), length);
chistics.comment.str= ptr;
chistics.comment.length= length;
creation_ctx= Stored_routine_creation_ctx::load_from_db(thd, name, table);
close_system_tables(thd, &open_tables_state_backup);
table= 0;
if (parse_user(definer, strlen(definer),
definer_user_name.str, &definer_user_name.length,
definer_host_name.str, &definer_host_name.length) &&
definer_user_name.length && !definer_host_name.length)
{
// 'user@' -> 'user@%'
definer_host_name= host_not_specified;
}
ret= db_load_routine(thd, type, name, sphp,
sql_mode, params, returns, body, chistics,
&definer_user_name, &definer_host_name,
created, modified, creation_ctx);
done:
/*
Restore the time zone flag as the timezone usage in proc table
does not affect replication.
*/
thd->time_zone_used= saved_time_zone_used;
if (table)
close_system_tables(thd, &open_tables_state_backup);
thd->variables.sql_mode= saved_mode;
DBUG_RETURN(ret);
}
/**
Silence DEPRECATED SYNTAX warnings when loading a stored procedure
into the cache.
*/
struct Silence_deprecated_warning : public Internal_error_handler
{
public:
virtual bool handle_condition(THD *thd,
uint sql_errno,
const char* sqlstate,
Sql_condition::enum_warning_level *level,
const char* msg,
Sql_condition ** cond_hdl);
};
bool
Silence_deprecated_warning::handle_condition(
THD *,
uint sql_errno,
const char*,
Sql_condition::enum_warning_level *level,
const char*,
Sql_condition ** cond_hdl)
{
*cond_hdl= NULL;
if (sql_errno == ER_WARN_DEPRECATED_SYNTAX &&
*level == Sql_condition::WARN_LEVEL_WARN)
return TRUE;
return FALSE;
}
/**
@brief The function parses input strings and returns SP stucture.
@param[in] thd Thread handler
@param[in] defstr CREATE... string
@param[in] sql_mode SQL mode
@param[in] creation_ctx Creation context of stored routines
@return Pointer on sp_head struct
@retval # Pointer on sp_head struct
@retval 0 error
*/
static sp_head *sp_compile(THD *thd, String *defstr, sql_mode_t sql_mode,
Stored_program_creation_ctx *creation_ctx)
{
sp_head *sp;
sql_mode_t old_sql_mode= thd->variables.sql_mode;
ha_rows old_select_limit= thd->variables.select_limit;
sp_rcontext *old_spcont= thd->spcont;
Silence_deprecated_warning warning_handler;
Parser_state parser_state;
thd->variables.sql_mode= sql_mode;
thd->variables.select_limit= HA_POS_ERROR;
if (parser_state.init(thd, defstr->c_ptr_safe(), defstr->length()))
{
thd->variables.sql_mode= old_sql_mode;
thd->variables.select_limit= old_select_limit;
return NULL;
}
lex_start(thd);
thd->push_internal_handler(&warning_handler);
thd->spcont= 0;
if (parse_sql(thd, & parser_state, creation_ctx) || thd->lex == NULL)
{
sp= thd->lex->sphead;
delete sp;
sp= 0;
}
else
{
sp= thd->lex->sphead;
}
thd->pop_internal_handler();
thd->spcont= old_spcont;
thd->variables.sql_mode= old_sql_mode;
thd->variables.select_limit= old_select_limit;
return sp;
}
class Bad_db_error_handler : public Internal_error_handler
{
public:
Bad_db_error_handler()
:m_error_caught(false)
{}
virtual bool handle_condition(THD *thd,
uint sql_errno,
const char* sqlstate,
Sql_condition::enum_warning_level *level,
const char* message,
Sql_condition ** cond_hdl);
bool error_caught() const { return m_error_caught; }
private:
bool m_error_caught;
};
bool
Bad_db_error_handler::handle_condition(THD *thd,
uint sql_errno,
const char* sqlstate,
Sql_condition::enum_warning_level
*level,
const char* message,
Sql_condition ** cond_hdl)
{
if (sql_errno == ER_BAD_DB_ERROR)
{
m_error_caught= true;
return true;
}
return false;
}
static int
db_load_routine(THD *thd, stored_procedure_type type,
const sp_name *name, sp_head **sphp,
sql_mode_t sql_mode, const char *params, const char *returns,
const char *body, st_sp_chistics &chistics,
LEX_STRING *definer_user_name, LEX_STRING *definer_host_name,
longlong created, longlong modified,
Stored_program_creation_ctx *creation_ctx)
{
LEX *old_lex= thd->lex, newlex;
String defstr;
char saved_cur_db_name_buf[SAFE_NAME_LEN+1];
LEX_STRING saved_cur_db_name=
{ saved_cur_db_name_buf, sizeof(saved_cur_db_name_buf) };
bool cur_db_changed;
Bad_db_error_handler db_not_exists_handler;
int ret= 0;
thd->lex= &newlex;
newlex.current_select= NULL;
// Resetting REPLACE and EXIST flags in create_info, for show_create_sp()
newlex.create_info.DDL_options_st::init();
defstr.set_charset(creation_ctx->get_client_cs());
/*
We have to add DEFINER clause and provide proper routine characterstics in
routine definition statement that we build here to be able to use this
definition for SHOW CREATE PROCEDURE later.
*/
if (!show_create_sp(thd, &defstr,
type,
NULL, 0,
name->m_name.str, name->m_name.length,
params, strlen(params),
returns, strlen(returns),
body, strlen(body),
&chistics, definer_user_name, definer_host_name,
sql_mode))
{
ret= SP_INTERNAL_ERROR;
goto end;
}
thd->push_internal_handler(&db_not_exists_handler);
/*
Change the current database (if needed).
TODO: why do we force switch here?
*/
if (mysql_opt_change_db(thd, &name->m_db, &saved_cur_db_name, TRUE,
&cur_db_changed))
{
ret= SP_INTERNAL_ERROR;
thd->pop_internal_handler();
goto end;
}
thd->pop_internal_handler();
if (db_not_exists_handler.error_caught())
{
ret= SP_INTERNAL_ERROR;
my_error(ER_BAD_DB_ERROR, MYF(0), name->m_db.str);
goto end;
}
{
*sphp= sp_compile(thd, &defstr, sql_mode, creation_ctx);
/*
Force switching back to the saved current database (if changed),
because it may be NULL. In this case, mysql_change_db() would
generate an error.
*/
if (cur_db_changed && mysql_change_db(thd, &saved_cur_db_name, TRUE))
{
ret= SP_INTERNAL_ERROR;
goto end;
}
if (!*sphp)
{
ret= SP_PARSE_ERROR;
goto end;
}
(*sphp)->set_definer(definer_user_name, definer_host_name);
(*sphp)->set_info(created, modified, &chistics, sql_mode);
(*sphp)->set_creation_ctx(creation_ctx);
(*sphp)->optimize();
/*
Not strictly necessary to invoke this method here, since we know
that we've parsed CREATE PROCEDURE/FUNCTION and not an
UPDATE/DELETE/INSERT/REPLACE/LOAD/CREATE TABLE, but we try to
maintain the invariant that this method is called for each
distinct statement, in case its logic is extended with other
types of analyses in future.
*/
newlex.set_trg_event_type_for_tables();
}
end:
thd->lex->sphead= NULL;
lex_end(thd->lex);
thd->lex= old_lex;
return ret;
}
void
sp_returns_type(THD *thd, String &result, sp_head *sp)
{
TABLE table;
TABLE_SHARE share;
Field *field;
bzero((char*) &table, sizeof(table));
bzero((char*) &share, sizeof(share));
table.in_use= thd;
table.s = &share;
field= sp->create_result_field(0, 0, &table);
field->sql_type(result);
if (field->has_charset())
{
result.append(STRING_WITH_LEN(" CHARSET "));
result.append(field->charset()->csname);
if (!(field->charset()->state & MY_CS_PRIMARY))
{
result.append(STRING_WITH_LEN(" COLLATE "));
result.append(field->charset()->name);
}
}
delete field;
}
/**
Delete the record for the stored routine object from mysql.proc,
which is already opened, locked, and positioned to the record with the
record to be deleted.
The operation deletes the record for the current record in "table"
and invalidates the stored-routine cache.
@param thd Thread context.
@param type Stored routine type (TYPE_ENUM_PROCEDURE or TYPE_ENUM_FUNCTION)
@param name Stored routine name.
@param table A pointer to the opened mysql.proc table
@returns Error code.
@return SP_OK on success, or SP_DELETE_ROW_FAILED on error.
used to indicate about errors.
*/
static int
sp_drop_routine_internal(THD *thd, stored_procedure_type type,
const sp_name *name, TABLE *table)
{
DBUG_ENTER("sp_drop_routine_internal");
if (table->file->ha_delete_row(table->record[0]))
DBUG_RETURN(SP_DELETE_ROW_FAILED);
/* Make change permanent and avoid 'table is marked as crashed' errors */
table->file->extra(HA_EXTRA_FLUSH);
sp_cache_invalidate();
/*
A lame workaround for lack of cache flush:
make sure the routine is at least gone from the
local cache.
*/
sp_head *sp;
sp_cache **spc= (type == TYPE_ENUM_FUNCTION ?
&thd->sp_func_cache : &thd->sp_proc_cache);
sp= sp_cache_lookup(spc, name);
if (sp)
sp_cache_flush_obsolete(spc, &sp);
DBUG_RETURN(SP_OK);
}
/**
Write stored-routine object into mysql.proc.
This operation stores attributes of the stored procedure/function into
the mysql.proc.