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rename of net_pkg.cc to protocol.cc

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Class for sending data from server to client (Protocol)
This handles both the old ( <= 4.0 ) protocol and then new binary protocol that is used for prepared statements.


libmysql/libmysql.c:
  Jump over reserved bits in the binary protocol
libmysqld/Makefile.am:
  rename of net_pkg.cc to protocol.cc
mysql-test/r/case.result:
  Fixed previously wrong test
mysql-test/r/cast.result:
  Fixed previously wrong test
sql/Makefile.am:
  Rename of net_pkg.cc to protocol.cc
sql/field.cc:
  Binary protocol
  Added key handling functions for new VARCHAR type
sql/field.h:
  New protocol
sql/ha_berkeley.cc:
  New protocol
sql/ha_berkeley.h:
  New protocol
sql/ha_innodb.cc:
  New protocol
sql/ha_myisam.cc:
  New protocol
sql/item.cc:
  New protocol
sql/item.h:
  New protocol
sql/item_func.cc:
  Removed old code from 3.23
sql/item_func.h:
  Set cached_result_type as it was previosly used before set
sql/item_subselect.cc:
  Standard make_field() is now good enough
sql/item_subselect.h:
  Use default make_field()
sql/item_sum.cc:
  Clean up Item_sum::make_field()
sql/item_sum.h:
  Use standard make_field()
sql/item_timefunc.h:
  return correct types for casts()
  Use standard make_field()
sql/log_event.cc:
  New protocol
sql/log_event.h:
  New protocol
sql/mysql_priv.h:
  Move things to protocol.h
sql/opt_range.cc:
  Indentation cleanups + small optimization
sql/procedure.h:
  Use MYSQL_TYPE instead of FIELD_TYPE
sql/protocol.cc:
  Class for sending data from server to client.
  This handles both the old ( <= 4.0 ) protocol and then new binary protocol that is used for prepared statements.
sql/repl_failsafe.cc:
  New protocol
sql/slave.cc:
  New protocol
sql/sql_acl.cc:
  New protocol
sql/sql_base.cc:
  Move send_fields() to protocol.cc
sql/sql_class.cc:
  New protocol
sql/sql_class.h:
  New protocol
sql/sql_db.cc:
  New protocol
sql/sql_error.cc:
  New protocol
sql/sql_handler.cc:
  New protocol
sql/sql_help.cc:
  New protocol
sql/sql_parse.cc:
  Remove wrong assert (variable was not initalized at this point)
sql/sql_prepare.cc:
  New protocol
sql/sql_repl.cc:
  New protocol
sql/sql_select.cc:
  New protocol
sql/sql_show.cc:
  New protocol
sql/sql_string.h:
  New functions used by the protocol functions
sql/sql_table.cc:
  New protocol
sql/structs.h:
  Make second_part ulong to prepare for ANSI sub-seconds
sql/time.cc:
  New convert function needed by the new protocol functions
This commit is contained in:
unknown
2002-12-11 09:17:51 +02:00
parent b392b78400
commit f918dfc8b2
48 changed files with 2877 additions and 1659 deletions
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983
sql/protocol.cc Normal file
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@ -0,0 +1,983 @@
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult 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 */
/*
Low level functions for storing data to be send to the MySQL client
The actual communction is handled by the net_xxx functions in net_serv.cc
*/
#ifdef __GNUC__
#pragma implementation // gcc: Class implementation
#endif
#include "mysql_priv.h"
#include <stdarg.h>
#include <assert.h>
/* Send a error string to client */
void send_error(THD *thd, uint sql_errno, const char *err)
{
uint length;
char buff[MYSQL_ERRMSG_SIZE+2];
NET *net= &thd->net;
DBUG_ENTER("send_error");
DBUG_PRINT("enter",("sql_errno: %d err: %s", sql_errno,
err ? err : net->last_error[0] ?
net->last_error : "NULL"));
query_cache_abort(net);
thd->query_error= 1; // needed to catch query errors during replication
if (!err)
{
if (sql_errno)
err=ER(sql_errno);
else
{
if ((err=net->last_error)[0])
sql_errno=net->last_errno;
else
{
sql_errno=ER_UNKNOWN_ERROR;
err=ER(sql_errno); /* purecov: inspected */
}
}
}
if (net->vio == 0)
{
if (thd->bootstrap)
{
/* In bootstrap it's ok to print on stderr */
fprintf(stderr,"ERROR: %d %s\n",sql_errno,err);
}
DBUG_VOID_RETURN;
}
if (net->return_errno)
{ // new client code; Add errno before message
int2store(buff,sql_errno);
length= (uint) (strmake(buff+2,err,MYSQL_ERRMSG_SIZE-1) - buff);
err=buff;
}
else
{
length=(uint) strlen(err);
set_if_smaller(length,MYSQL_ERRMSG_SIZE-1);
}
VOID(net_write_command(net,(uchar) 255, "", 0, (char*) err,length));
thd->fatal_error=0; // Error message is given
thd->net.report_error= 0;
DBUG_VOID_RETURN;
}
/*
Send an error to the client when a connection is forced close
This is used by mysqld.cc, which doesn't have a THD
*/
void net_send_error(NET *net, uint sql_errno, const char *err)
{
char buff[2];
uint length;
DBUG_ENTER("send_net_error");
int2store(buff,sql_errno);
length=(uint) strlen(err);
set_if_smaller(length,MYSQL_ERRMSG_SIZE-1);
net_write_command(net,(uchar) 255, buff, 2, err, length);
DBUG_VOID_RETURN;
}
/*
Send a warning to the end user
SYNOPSIS
send_warning()
thd Thread handler
sql_errno Warning number (error message)
err Error string. If not set, use ER(sql_errno)
DESCRIPTION
Register the warning so that the user can get it with mysql_warnings()
Send an ok (+ warning count) to the end user.
*/
void send_warning(THD *thd, uint sql_errno, const char *err)
{
DBUG_ENTER("send_warning");
push_warning(thd, MYSQL_ERROR::WARN_LEVEL_WARN, sql_errno,
err ? err : ER(sql_errno));
send_ok(thd);
DBUG_VOID_RETURN;
}
/*
Write error package and flush to client
It's a little too low level, but I don't want to use another buffer for
this
*/
void
net_printf(THD *thd, uint errcode, ...)
{
va_list args;
uint length,offset;
const char *format,*text_pos;
int head_length= NET_HEADER_SIZE;
NET *net= &thd->net;
DBUG_ENTER("net_printf");
DBUG_PRINT("enter",("message: %u",errcode));
thd->query_error= 1; // needed to catch query errors during replication
query_cache_abort(net); // Safety
va_start(args,errcode);
/*
The following is needed to make net_printf() work with 0 argument for
errorcode and use the argument after that as the format string. This
is useful for rare errors that are not worth the hassle to put in
errmsg.sys, but at the same time, the message is not fixed text
*/
if (errcode)
format= ER(errcode);
else
{
format=va_arg(args,char*);
errcode= ER_UNKNOWN_ERROR;
}
offset= net->return_errno ? 2 : 0;
text_pos=(char*) net->buff+head_length+offset+1;
(void) vsprintf(my_const_cast(char*) (text_pos),format,args);
length=(uint) strlen((char*) text_pos);
if (length >= sizeof(net->last_error))
length=sizeof(net->last_error)-1; /* purecov: inspected */
va_end(args);
if (net->vio == 0)
{
if (thd->bootstrap)
{
/* In bootstrap it's ok to print on stderr */
fprintf(stderr,"ERROR: %d %s\n",errcode,text_pos);
thd->fatal_error=1;
}
DBUG_VOID_RETURN;
}
int3store(net->buff,length+1+offset);
net->buff[3]= (net->compress) ? 0 : (uchar) (net->pkt_nr++);
net->buff[head_length]=(uchar) 255; // Error package
if (offset)
int2store(text_pos-2, errcode);
VOID(net_real_write(net,(char*) net->buff,length+head_length+1+offset));
thd->fatal_error=0; // Error message is given
DBUG_VOID_RETURN;
}
/*
Return ok to the client.
SYNOPSIS
send_ok()
thd Thread handler
affected_rows Number of rows changed by statement
id Auto_increment id for first row (if used)
message Message to send to the client (Used by mysql_status)
DESCRIPTION
The ok packet has the following structure
0 Marker (1 byte)
affected_rows Stored in 1-9 bytes
id Stored in 1-9 bytes
server_status Copy of thd->server_status; Can be used by client
to check if we are inside an transaction
New in 4.0 protocol
warning_count Stored in 2 bytes; New in 4.1 protocol
message Stored as packed length (1-9 bytes) + message
Is not stored if no message
If net->no_send_ok return without sending packet
*/
void
send_ok(THD *thd, ha_rows affected_rows, ulonglong id, const char *message)
{
NET *net= &thd->net;
if (net->no_send_ok || !net->vio) // hack for re-parsing queries
return;
char buff[MYSQL_ERRMSG_SIZE+10],*pos;
DBUG_ENTER("send_ok");
buff[0]=0; // No fields
pos=net_store_length(buff+1,(ulonglong) affected_rows);
pos=net_store_length(pos, (ulonglong) id);
if (thd->client_capabilities & CLIENT_PROTOCOL_41)
{
int2store(pos,thd->server_status);
pos+=2;
/* We can only return up to 65535 warnings in two bytes */
uint tmp= min(thd->total_warn_count, 65535);
int2store(pos, tmp);
pos+= 2;
}
else if (net->return_status) // For 4.0 protocol
{
int2store(pos,thd->server_status);
pos+=2;
}
if (message)
pos=net_store_data((char*) pos, message, strlen(message));
VOID(my_net_write(net,buff,(uint) (pos-buff)));
VOID(net_flush(net));
DBUG_VOID_RETURN;
}
/*
Send eof (= end of result set) to the client
SYNOPSIS
send_eof()
thd Thread handler
no_flush Set to 1 if there will be more data to the client,
like in send_fields().
DESCRIPTION
The eof packet has the following structure
254 Marker (1 byte)
warning_count Stored in 2 bytes; New in 4.1 protocol
status_flag Stored in 2 bytes;
For flags like SERVER_STATUS_MORE_RESULTS
Note that the warning count will not be sent if 'no_flush' is set as
we don't want to report the warning count until all data is sent to the
client.
*/
void
send_eof(THD *thd, bool no_flush)
{
static char eof_buff[1]= { (char) 254 }; /* Marker for end of fields */
NET *net= &thd->net;
DBUG_ENTER("send_eof");
if (net->vio != 0)
{
if (!no_flush && (thd->client_capabilities & CLIENT_PROTOCOL_41))
{
uchar buff[5];
uint tmp= min(thd->total_warn_count, 65535);
buff[0]=254;
int2store(buff+1, tmp);
int2store(buff+3, 0); // No flags yet
VOID(my_net_write(net,(char*) buff,5));
VOID(net_flush(net));
}
else
{
VOID(my_net_write(net,eof_buff,1));
if (!no_flush)
VOID(net_flush(net));
}
}
DBUG_VOID_RETURN;
}
/****************************************************************************
Store a field length in logical packet
This is used to code the string length for normal protocol
****************************************************************************/
char *
net_store_length(char *pkg, ulonglong length)
{
uchar *packet=(uchar*) pkg;
if (length < LL(251))
{
*packet=(uchar) length;
return (char*) packet+1;
}
/* 251 is reserved for NULL */
if (length < LL(65536))
{
*packet++=252;
int2store(packet,(uint) length);
return (char*) packet+2;
}
if (length < LL(16777216))
{
*packet++=253;
int3store(packet,(ulong) length);
return (char*) packet+3;
}
*packet++=254;
int8store(packet,length);
return (char*) packet+9;
}
/*
Faster net_store_length when we know length is a 32 bit integer
*/
char *net_store_length(char *pkg, uint length)
{
uchar *packet=(uchar*) pkg;
if (length < 251)
{
*packet=(uchar) length;
return (char*) packet+1;
}
*packet++=252;
int2store(packet,(uint) length);
return (char*) packet+2;
}
/*
Used internally for storing strings in packet
*/
static bool net_store_data(String *packet, const char *from, uint length)
{
ulong packet_length=packet->length();
if (packet_length+5+length > packet->alloced_length() &&
packet->realloc(packet_length+5+length))
return 1;
char *to=(char*) net_store_length((char*) packet->ptr()+packet_length,
(ulonglong) length);
memcpy(to,from,length);
packet->length((uint) (to+length-packet->ptr()));
return 0;
}
/****************************************************************************
Functions used by the protocol functions (like send_ok) to store strings
and numbers in the header result packet.
****************************************************************************/
/* The following will only be used for short strings < 65K */
char *net_store_data(char *to,const char *from, uint length)
{
to=net_store_length(to,length);
memcpy(to,from,length);
return to+length;
}
char *net_store_data(char *to,int32 from)
{
char buff[20];
uint length=(uint) (int10_to_str(from,buff,10)-buff);
to=net_store_length(to,length);
memcpy(to,buff,length);
return to+length;
}
char *net_store_data(char *to,longlong from)
{
char buff[22];
uint length=(uint) (longlong10_to_str(from,buff,10)-buff);
to=net_store_length(to,length);
memcpy(to,buff,length);
return to+length;
}
/*
Function called by my_net_init() to set some check variables
*/
extern "C" {
void my_net_local_init(NET *net)
{
net->max_packet= (uint) global_system_variables.net_buffer_length;
net->read_timeout= (uint) global_system_variables.net_read_timeout;
net->write_timeout=(uint) global_system_variables.net_write_timeout;
net->retry_count= (uint) global_system_variables.net_retry_count;
net->max_packet_size= max(global_system_variables.net_buffer_length,
global_system_variables.max_allowed_packet);
}
}
/*****************************************************************************
Default Protocol functions
*****************************************************************************/
void Protocol::init(THD *thd_arg)
{
thd=thd_arg;
convert=thd->variables.convert_set;
packet= &thd->packet;
#ifndef DEBUG_OFF
field_types= 0;
#endif
}
/*
Send name and type of result to client.
SYNOPSIS
send_fields()
THD Thread data object
list List of items to send to client
convert object used to convertation to another character set
flag Bit mask with the following functions:
1 send number of rows
2 send default values
DESCRIPTION
Sum fields has table name empty and field_name.
Uses send_fields_convert() and send_fields() depending on
if we have an active character set convert or not.
RETURN VALUES
0 ok
1 Error (Note that in this case the error is not sent to the client)
*/
bool Protocol::send_fields(List<Item> *list, uint flag)
{
List_iterator_fast<Item> it(*list);
Item *item;
char buff[80];
String tmp((char*) buff,sizeof(buff),default_charset_info);
Protocol_simple prot(thd);
String *packet= prot.storage_packet();
DBUG_ENTER("send_fields");
if (flag & 1)
{ // Packet with number of elements
char *pos=net_store_length(buff, (uint) list->elements);
(void) my_net_write(&thd->net, buff,(uint) (pos-buff));
}
#ifndef DEBUG_OFF
field_types= (enum_field_types*) thd->alloc(sizeof(field_types) *
list->elements);
uint count= 0;
#endif
while ((item=it++))
{
char *pos;
Send_field field;
item->make_field(&field);
prot.prepare_for_resend();
if (thd->client_capabilities & CLIENT_PROTOCOL_41)
{
if (prot.store(field.db_name, (uint) strlen(field.db_name)) ||
prot.store(field.table_name, (uint) strlen(field.table_name)) ||
prot.store(field.org_table_name,
(uint) strlen(field.org_table_name)) ||
prot.store(field.col_name, (uint) strlen(field.col_name)) ||
prot.store(field.org_col_name, (uint) strlen(field.org_col_name)))
goto err;
}
else
{
if (prot.store(field.table_name, (uint) strlen(field.table_name)) ||
prot.store(field.col_name, (uint) strlen(field.col_name)))
goto err;
}
if (packet->realloc(packet->length()+10))
goto err;
pos= (char*) packet->ptr()+packet->length();
#ifdef TO_BE_DELETED_IN_6
if (!(thd->client_capabilities & CLIENT_LONG_FLAG))
{
packet->length(packet->length()+9);
pos[0]=3; int3store(pos+1,field.length);
pos[4]=1; pos[5]=field.type;
pos[6]=2; pos[7]=(char) field.flags; pos[8]= (char) field.decimals;
}
else
#endif
{
packet->length(packet->length()+10);
pos[0]=3; int3store(pos+1,field.length);
pos[4]=1; pos[5]=field.type;
pos[6]=3; int2store(pos+7,field.flags); pos[9]= (char) field.decimals;
}
if (flag & 2)
item->send(&prot, &tmp); // Send default value
if (prot.write())
break; /* purecov: inspected */
#ifndef DEBUG_OFF
field_types[count++]= field.type;
#endif
}
send_eof(thd);
DBUG_RETURN(prepare_for_send(list));
err:
send_error(thd,ER_OUT_OF_RESOURCES); /* purecov: inspected */
DBUG_RETURN(1); /* purecov: inspected */
}
bool Protocol::write()
{
DBUG_ENTER("Protocol::write");
DBUG_RETURN(my_net_write(&thd->net, packet->ptr(), packet->length()));
}
/*
Send \0 end terminated string
SYNOPSIS
store()
from NullS or \0 terminated string
NOTES
In most cases one should use store(from, length) instead of this function
RETURN VALUES
0 ok
1 error
*/
bool Protocol::store(const char *from)
{
if (!from)
return store_null();
uint length= strlen(from);
return store(from, length);
}
/*
Send a set of strings as one long string with ',' in between
*/
bool Protocol::store(I_List<i_string>* str_list)
{
char buf[256];
String tmp(buf, sizeof(buf), default_charset_info);
tmp.length(0);
I_List_iterator<i_string> it(*str_list);
i_string* s;
while ((s=it++))
{
if (tmp.length())
tmp.append(',');
tmp.append(s->ptr);
}
return store((char*) tmp.ptr(), tmp.length());
}
/****************************************************************************
Functions to handle the simple (default) protocol where everything is
This protocol is the one that is used by default between the MySQL server
and client when you are not using prepared statements.
All data are sent as 'packed-string-length' followed by 'string-data'
****************************************************************************/
void Protocol_simple::prepare_for_resend()
{
packet->length(0);
#ifndef DEBUG_OFF
field_pos= 0;
#endif
}
bool Protocol_simple::store_null()
{
#ifndef DEBUG_OFF
field_pos++;
#endif
char buff[1];
buff[0]= 251;
return packet->append(buff, sizeof(buff), PACKET_BUFFET_EXTRA_ALLOC);
}
bool Protocol_simple::store(const char *from, uint length)
{
#ifndef DEBUG_OFF
DBUG_ASSERT(field_types == 0 ||
field_types[field_pos] == MYSQL_TYPE_STRING ||
field_types[field_pos] == MYSQL_TYPE_VAR_STRING);
field_pos++;
#endif
if (convert)
return convert->store(packet, from, length);
return net_store_data(packet, from, length);
}
bool Protocol_simple::store_tiny(longlong from)
{
#ifndef DEBUG_OFF
DBUG_ASSERT(field_types == 0 || field_types[field_pos++] == MYSQL_TYPE_TINY);
#endif
char buff[20];
return net_store_data(packet,(char*) buff,
(uint) (int10_to_str((int) from,buff, -10)-buff));
}
bool Protocol_simple::store_short(longlong from)
{
#ifndef DEBUG_OFF
DBUG_ASSERT(field_types == 0 ||
field_types[field_pos++] == MYSQL_TYPE_SHORT);
#endif
char buff[20];
return net_store_data(packet,(char*) buff,
(uint) (int10_to_str((int) from,buff, -10)-buff));
}
bool Protocol_simple::store_long(longlong from)
{
#ifndef DEBUG_OFF
DBUG_ASSERT(field_types == 0 || field_types[field_pos++] == MYSQL_TYPE_LONG);
#endif
char buff[20];
return net_store_data(packet,(char*) buff,
(uint) (int10_to_str((int) from,buff, -10)-buff));
}
bool Protocol_simple::store_longlong(longlong from, bool unsigned_flag)
{
#ifndef DEBUG_OFF
DBUG_ASSERT(field_types == 0 ||
field_types[field_pos++] == MYSQL_TYPE_LONGLONG);
#endif
char buff[22];
return net_store_data(packet,(char*) buff,
(uint) (longlong10_to_str(from,buff,
unsigned_flag ? 10 : -10)-
buff));
}
bool Protocol_simple::store(float from, uint32 decimals, String *buffer)
{
#ifndef DEBUG_OFF
DBUG_ASSERT(field_types == 0 ||
field_types[field_pos++] == MYSQL_TYPE_FLOAT);
#endif
buffer->set((double) from, decimals, thd->thd_charset);
return net_store_data(packet,(char*) buffer->ptr(), buffer->length());
}
bool Protocol_simple::store(double from, uint32 decimals, String *buffer)
{
#ifndef DEBUG_OFF
DBUG_ASSERT(field_types == 0 ||
field_types[field_pos++] == MYSQL_TYPE_DOUBLE);
#endif
buffer->set(from, decimals, thd->thd_charset);
return net_store_data(packet,(char*) buffer->ptr(), buffer->length());
}
bool Protocol_simple::store(Field *field)
{
#ifndef DEBUG_OFF
field_pos++;
#endif
if (field->is_null())
return store_null();
char buff[MAX_FIELD_WIDTH];
String tmp(buff,sizeof(buff),default_charset_info);
field->val_str(&tmp,&tmp);
if (convert)
return convert->store(packet, tmp.ptr(), tmp.length());
return net_store_data(packet, tmp.ptr(), tmp.length());
}
bool Protocol_simple::store(TIME *tm)
{
#ifndef DEBUG_OFF
DBUG_ASSERT(field_types == 0 ||
field_types[field_pos++] == MYSQL_TYPE_DATETIME);
#endif
char buff[40];
uint length;
length= my_sprintf(buff,(buff, "%04d-%02d-%02d %02d:%02d:%02d",
(int) tm->year,
(int) tm->month,
(int) tm->day,
(int) tm->hour,
(int) tm->minute,
(int) tm->second));
return net_store_data(packet, (char*) buff, length);
}
bool Protocol_simple::store_date(TIME *tm)
{
#ifndef DEBUG_OFF
DBUG_ASSERT(field_types == 0 ||
field_types[field_pos++] == MYSQL_TYPE_DATE);
#endif
char buff[40];
uint length;
length= my_sprintf(buff,(buff, "%04d-%02d-%02d",
(int) tm->year,
(int) tm->month,
(int) tm->day));
return net_store_data(packet, (char*) buff, length);
}
bool Protocol_simple::store_time(TIME *tm)
{
#ifndef DEBUG_OFF
DBUG_ASSERT(field_types == 0 ||
field_types[field_pos++] == MYSQL_TYPE_TIME);
#endif
char buff[40];
uint length;
length= my_sprintf(buff,(buff, "%s%ld:%02d:%02d",
tm->neg ? "-" : "",
(long) tm->day*3600L+(long) tm->hour,
(int) tm->minute,
(int) tm->second));
return net_store_data(packet, (char*) buff, length);
}
/****************************************************************************
Functions to handle the binary protocol used with prepared statements
****************************************************************************/
bool Protocol_prep::prepare_for_send(List<Item> *item_list)
{
field_count=item_list->elements;
bit_fields= (field_count+3)/8;
if (packet->alloc(bit_fields))
return 1;
/* prepare_for_resend will be called after this one */
return 0;
}
void Protocol_prep::prepare_for_resend()
{
packet->length(bit_fields);
bzero((char*) packet->ptr()+1, bit_fields-1);
packet[0]=1; // Marker for ok packet
field_pos=0;
}
bool Protocol_prep::store(const char *from,uint length)
{
#ifndef DEBUG_OFF
DBUG_ASSERT(field_types == 0 ||
field_types[field_pos] == MYSQL_TYPE_STRING ||
field_types[field_pos] == MYSQL_TYPE_VAR_STRING);
#endif
field_pos++;
if (convert)
return convert->store(packet, from, length);
return net_store_data(packet, from, length);
}
bool Protocol_prep::store_null()
{
uint offset=(field_pos+2)/8, bit= (1 << ((field_pos+2) & 7));
/* Room for this as it's allocated in prepare_for_send */
char *to= (char*) packet->ptr()+offset;
*to= (char) ((uchar) *to | (uchar) bit);
field_pos++;
return 0;
}
bool Protocol_prep::store_tiny(longlong from)
{
#ifndef DEBUG_OFF
DBUG_ASSERT(field_types == 0 ||
field_types[field_pos] == MYSQL_TYPE_TINY);
#endif
char buff[1];
field_pos++;
buff[0]= (uchar) from;
return packet->append(buff, sizeof(buff), PACKET_BUFFET_EXTRA_ALLOC);
}
bool Protocol_prep::store_short(longlong from)
{
#ifndef DEBUG_OFF
DBUG_ASSERT(field_types == 0 ||
field_types[field_pos] == MYSQL_TYPE_SHORT);
#endif
field_pos++;
char *to= packet->prep_append(2, PACKET_BUFFET_EXTRA_ALLOC);
if (!to)
return 1;
int2store(to, (int) from);
return 0;
}
bool Protocol_prep::store_long(longlong from)
{
#ifndef DEBUG_OFF
DBUG_ASSERT(field_types == 0 ||
field_types[field_pos] == MYSQL_TYPE_LONG);
#endif
field_pos++;
char *to= packet->prep_append(4, PACKET_BUFFET_EXTRA_ALLOC);
if (!to)
return 1;
int4store(to, from);
return 0;
}
bool Protocol_prep::store_longlong(longlong from, bool unsigned_flag)
{
#ifndef DEBUG_OFF
DBUG_ASSERT(field_types == 0 ||
field_types[field_pos] == MYSQL_TYPE_LONGLONG);
#endif
field_pos++;
char *to= packet->prep_append(8, PACKET_BUFFET_EXTRA_ALLOC);
if (!to)
return 1;
int8store(to, from);
return 0;
}
bool Protocol_prep::store(float from, uint32 decimals, String *buffer)
{
#ifndef DEBUG_OFF
DBUG_ASSERT(field_types == 0 ||
field_types[field_pos] == MYSQL_TYPE_FLOAT);
#endif
field_pos++;
char *to= packet->prep_append(4, PACKET_BUFFET_EXTRA_ALLOC);
if (!to)
return 1;
float4store(to, from);
return 0;
}
bool Protocol_prep::store(double from, uint32 decimals, String *buffer)
{
#ifndef DEBUG_OFF
DBUG_ASSERT(field_types == 0 ||
field_types[field_pos] == MYSQL_TYPE_DOUBLE);
#endif
field_pos++;
char *to= packet->prep_append(8, PACKET_BUFFET_EXTRA_ALLOC);
if (!to)
return 1;
float8store(to, from);
return 0;
}
bool Protocol_prep::store(Field *field)
{
/*
We should not count up field_pos here as send_binary() will call another
protocol function to do this for us
*/
if (field->is_null())
return store_null();
return field->send_binary(this);
}
bool Protocol_prep::store(TIME *tm)
{
#ifndef DEBUG_OFF
DBUG_ASSERT(field_types == 0 ||
field_types[field_pos] == MYSQL_TYPE_DATETIME ||
field_types[field_pos] == MYSQL_TYPE_DATE);
#endif
char buff[12],*pos;
uint length;
field_pos++;
pos= buff+1;
int2store(pos, tm->year);
int2store(pos+2, tm->month);
int2store(pos+3, tm->day);
int2store(pos+4, tm->hour);
int2store(pos+5, tm->minute);
int2store(pos+6, tm->second);
int4store(pos+7, tm->second_part);
if (tm->second_part)
length=11;
else if (tm->hour || tm->minute || tm->second)
length=7;
else if (tm->year || tm->month || tm->day)
length=4;
else
length=0;
buff[0]=(char) length; // Length is stored first
return packet->append(buff, length+1, PACKET_BUFFET_EXTRA_ALLOC);
}
bool Protocol_prep::store_date(TIME *tm)
{
tm->hour= tm->minute= tm->second=0;
tm->second_part= 0;
return Protocol_prep::store(tm);
}
bool Protocol_prep::store_time(TIME *tm)
{
#ifndef DEBUG_OFF
DBUG_ASSERT(field_types == 0 ||
field_types[field_pos] == MYSQL_TYPE_TIME);
#endif
char buff[15],*pos;
uint length;
field_pos++;
pos= buff+1;
pos[0]= tm->neg ? 1 : 0;
int4store(pos+1, tm->day);
int2store(pos+5, tm->hour);
int2store(pos+7, tm->minute);
int2store(pos+9, tm->second);
int4store(pos+11, tm->second_part);
if (tm->second_part)
length=14;
else if (tm->hour || tm->minute || tm->second || tm->day)
length=10;
else
length=0;
buff[0]=(char) length; // Length is stored first
return packet->append(buff, length+1, PACKET_BUFFET_EXTRA_ALLOC);
}