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/* Copyright (C) 2006 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; 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 "rpl_utility.h"
#include "rpl_rli.h"
/*********************************************************************
* table_def member definitions *
*********************************************************************/
/*
This function returns the field size in raw bytes based on the type
and the encoded field data from the master's raw data.
*/
uint32_t table_def::calc_field_size(uint col, uchar *master_data) const
{
uint32_t length= 0;
switch (type(col)) {
case FIELD_TYPE_NEWDECIMAL:
length= my_decimal_get_binary_size(m_field_metadata[col] >> 8,
m_field_metadata[col] & 0xff);
break;
case FIELD_TYPE_DOUBLE:
length= m_field_metadata[col];
break;
/*
The cases for SET and ENUM are include for completeness, however
both are mapped to type FIELD_TYPE_STRING and their real types
are encoded in the field metadata.
*/
case FIELD_TYPE_SET:
case FIELD_TYPE_ENUM:
case FIELD_TYPE_STRING:
{
uchar type= m_field_metadata[col] >> 8U;
if ((type == FIELD_TYPE_SET) || (type == FIELD_TYPE_ENUM))
length= m_field_metadata[col] & 0x00ff;
else
{
/*
We are reading the actual size from the master_data record
because this field has the actual lengh stored in the first
byte.
*/
length= (uint) *master_data + 1;
assert(length != 0);
}
break;
}
case FIELD_TYPE_YEAR:
case FIELD_TYPE_TINY:
length= 1;
break;
case FIELD_TYPE_SHORT:
length= 2;
break;
case FIELD_TYPE_LONG:
length= 4;
break;
case FIELD_TYPE_LONGLONG:
length= 8;
break;
case FIELD_TYPE_NULL:
length= 0;
break;
case FIELD_TYPE_NEWDATE:
length= 3;
break;
case FIELD_TYPE_TIME:
length= 3;
break;
case FIELD_TYPE_TIMESTAMP:
length= 4;
break;
case FIELD_TYPE_DATETIME:
length= 8;
break;
case FIELD_TYPE_VARCHAR:
{
length= m_field_metadata[col] > 255 ? 2 : 1; // c&p of Field_varstring::data_length()
assert(uint2korr(master_data) > 0);
length+= length == 1 ? (uint32_t) *master_data : uint2korr(master_data);
break;
}
case FIELD_TYPE_BLOB:
{
length= uint4korr(master_data);
length+= m_field_metadata[col];
break;
}
default:
length= ~(uint32_t) 0;
}
return length;
}
/*
Is the definition compatible with a table?
*/
int
table_def::compatible_with(Relay_log_info const *rli_arg, TABLE *table)
const
{
/*
We only check the initial columns for the tables.
*/
uint const cols_to_check= min(table->s->fields, size());
int error= 0;
Relay_log_info const *rli= const_cast<Relay_log_info*>(rli_arg);
TABLE_SHARE const *const tsh= table->s;
for (uint col= 0 ; col < cols_to_check ; ++col)
{
if (table->field[col]->type() != type(col))
{
assert(col < size() && col < tsh->fields);
assert(tsh->db.str && tsh->table_name.str);
error= 1;
char buf[256];
snprintf(buf, sizeof(buf), "Column %d type mismatch - "
"received type %d, %s.%s has type %d",
col, type(col), tsh->db.str, tsh->table_name.str,
table->field[col]->type());
rli->report(ERROR_LEVEL, ER_BINLOG_ROW_WRONG_TABLE_DEF,
ER(ER_BINLOG_ROW_WRONG_TABLE_DEF), buf);
}
/*
Check the slave's field size against that of the master.
*/
if (!error &&
!table->field[col]->compatible_field_size(field_metadata(col)))
{
error= 1;
char buf[256];
snprintf(buf, sizeof(buf), "Column %d size mismatch - "
"master has size %d, %s.%s on slave has size %d."
" Master's column size should be <= the slave's "
"column size.", col,
table->field[col]->pack_length_from_metadata(
m_field_metadata[col]),
tsh->db.str, tsh->table_name.str,
table->field[col]->row_pack_length());
rli->report(ERROR_LEVEL, ER_BINLOG_ROW_WRONG_TABLE_DEF,
ER(ER_BINLOG_ROW_WRONG_TABLE_DEF), buf);
}
}
return error;
}
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