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Prepared statements in embedded server
Several changes in library code with two goals:
to make mysql_prepare_stmt working in embedded server
to get rid of #define mysql_interface_func mysql->methods->interface_func
in user's interface
This commit is contained in:
hf@deer.(none)
2003-09-16 16:06:25 +05:00
parent e63e2229b6
commit bf017a2eb0
10 changed files with 180 additions and 234 deletions
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52
libmysql/libmysql.c
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@ -973,6 +973,19 @@ mysql_list_tables(MYSQL *mysql, const char *wild)
DBUG_RETURN (mysql_store_result(mysql));
}
MYSQL_FIELD * STDCALL cli_list_fields(MYSQL *mysql)
{
MYSQL_DATA *query;
if (!(query= cli_read_rows(mysql,(MYSQL_FIELD*) 0,
protocol_41(mysql) ? 8 : 6)))
return NULL;
mysql->field_count= query->rows;
return unpack_fields(query,&mysql->field_alloc,
query->rows, 1, mysql->server_capabilities);
}
/**************************************************************************
List all fields in a table
If wild is given then only the fields matching wild is returned
@ -981,36 +994,29 @@ mysql_list_tables(MYSQL *mysql, const char *wild)
**************************************************************************/
MYSQL_RES * STDCALL
cli_list_fields(MYSQL *mysql, const char *table, const char *wild)
mysql_list_fields(MYSQL *mysql, const char *table, const char *wild)
{
MYSQL_RES *result;
MYSQL_DATA *query;
MYSQL_RES *result;
MYSQL_FIELD *fields;
char buff[257],*end;
DBUG_ENTER("mysql_list_fields");
DBUG_PRINT("enter",("table: '%s' wild: '%s'",table,wild ? wild : ""));
LINT_INIT(query);
end=strmake(strmake(buff, table,128)+1,wild ? wild : "",128);
free_old_query(mysql);
if (simple_command(mysql,COM_FIELD_LIST,buff,(ulong) (end-buff),1) ||
!(query = read_rows(mysql,(MYSQL_FIELD*) 0,
protocol_41(mysql) ? 8 : 6)))
!(fields= (*mysql->methods->list_fields)(mysql)))
DBUG_RETURN(NULL);
free_old_query(mysql);
if (!(result = (MYSQL_RES *) my_malloc(sizeof(MYSQL_RES),
MYF(MY_WME | MY_ZEROFILL))))
{
free_rows(query);
DBUG_RETURN(NULL);
}
result->methods= mysql->methods;
result->field_alloc=mysql->field_alloc;
mysql->fields=0;
result->field_count = (uint) query->rows;
result->fields= unpack_fields(query,&result->field_alloc,
result->field_count, 1,
mysql->server_capabilities);
result->field_count = mysql->field_count;
result->fields= fields;
result->eof=1;
DBUG_RETURN(result);
}
@ -1031,8 +1037,8 @@ mysql_list_processes(MYSQL *mysql)
free_old_query(mysql);
pos=(uchar*) mysql->net.read_pos;
field_count=(uint) net_field_length(&pos);
if (!(fields = read_rows(mysql,(MYSQL_FIELD*) 0,
protocol_41(mysql) ? 7 : 5)))
if (!(fields = (*mysql->methods->read_rows)(mysql,(MYSQL_FIELD*) 0,
protocol_41(mysql) ? 7 : 5)))
DBUG_RETURN(NULL);
if (!(mysql->fields=unpack_fields(fields,&mysql->field_alloc,field_count,0,
mysql->server_capabilities)))
@ -1569,7 +1575,7 @@ my_bool STDCALL cli_read_prepare_result(MYSQL *mysql, MYSQL_STMT *stmt)
uint field_count;
ulong length, param_count;
MYSQL_DATA *fields_data;
DBUG_ENTER("cli_read_prepare_result");
DBUG_ENTER("read_prepare_result");
mysql= mysql->last_used_con;
if ((length= net_safe_read(mysql)) == packet_error)
@ -1586,7 +1592,7 @@ my_bool STDCALL cli_read_prepare_result(MYSQL *mysql, MYSQL_STMT *stmt)
mysql->server_status|= SERVER_STATUS_IN_TRANS;
mysql->extra_info= net_field_length_ll(&pos);
if (!(fields_data= read_rows(mysql, (MYSQL_FIELD*) 0, 7)))
if (!(fields_data= (*mysql->methods->read_rows)(mysql,(MYSQL_FIELD*)0,7)))
DBUG_RETURN(1);
if (!(stmt->fields= unpack_fields(fields_data,&stmt->mem_root,
field_count,0,
@ -1638,17 +1644,17 @@ mysql_prepare(MYSQL *mysql, const char *query, ulong length)
}
init_alloc_root(&stmt->mem_root,8192,0);
if ((*mysql->read_prepare_result)(mysql, stmt))
if ((*mysql->methods->read_prepare_result)(mysql, stmt))
{
stmt_close(stmt, 1);
DBUG_RETURN(0);
}
if (!(stmt->params= (MYSQL_BIND *) alloc_root(&stmt->mem_root,
sizeof(MYSQL_BIND)*
(param_count +
field_count))))
(stmt->param_count +
stmt->field_count))))
set_stmt_error(stmt, CR_OUT_OF_MEMORY, unknown_sqlstate);
stmt->bind= stmt->params + param_count;
stmt->bind= stmt->params + stmt->param_count;
stmt->state= MY_ST_PREPARE;
stmt->mysql= mysql;