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cleanup: ha_partition::update_row/delete_row

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implement log-term TODO item, convert redundant if()-s into asserts.
This commit is contained in:
Sergei Golubchik
2018-02-15 16:26:31 +01:00
parent 221d010f3e
commit 187a163c78
3 changed files with 46 additions and 141 deletions
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104
sql/sql_partition.cc
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@ -246,82 +246,11 @@ bool partition_default_handling(THD *thd, TABLE *table, partition_info *part_inf
/*
A useful routine used by update_row for partition handlers to calculate
the partition ids of the old and the new record.
A useful routine used by update/delete_row for partition handlers to
calculate the partition id.
SYNOPSIS
get_part_for_update()
old_data Buffer of old record
new_data Buffer of new record
rec0 Reference to table->record[0]
part_info Reference to partition information
out:old_part_id The returned partition id of old record
out:new_part_id The returned partition id of new record
RETURN VALUE
0 Success
> 0 Error code
*/
int get_parts_for_update(const uchar *old_data, const uchar *new_data,
const uchar *rec0, partition_info *part_info,
uint32 *old_part_id, uint32 *new_part_id,
longlong *new_func_value)
{
Field **part_field_array= part_info->full_part_field_array;
int error;
longlong old_func_value;
DBUG_ENTER("get_parts_for_update");
DBUG_ASSERT(new_data == rec0); // table->record[0]
part_info->table->move_fields(part_field_array, old_data, rec0);
error= part_info->get_partition_id(part_info, old_part_id,
&old_func_value);
part_info->table->move_fields(part_field_array, rec0, old_data);
if (unlikely(error)) // Should never happen
{
DBUG_ASSERT(0);
DBUG_RETURN(error);
}
#ifdef NOT_NEEDED
if (new_data == rec0)
#endif
{
if (unlikely(error= part_info->get_partition_id(part_info,
new_part_id,
new_func_value)))
{
DBUG_RETURN(error);
}
}
#ifdef NOT_NEEDED
else
{
/*
This branch should never execute but it is written anyways for
future use. It will be tested by ensuring that the above
condition is false in one test situation before pushing the code.
*/
part_info->table->move_fields(part_field_array, new_data, rec0);
error= part_info->get_partition_id(part_info, new_part_id,
new_func_value);
part_info->table->move_fields(part_field_array, rec0, new_data);
if (unlikely(error))
{
DBUG_RETURN(error);
}
}
#endif
DBUG_RETURN(0);
}
/*
A useful routine used by delete_row for partition handlers to calculate
the partition id.
SYNOPSIS
get_part_for_delete()
get_part_for_buf()
buf Buffer of old record
rec0 Reference to table->record[0]
part_info Reference to partition information
@ -337,21 +266,19 @@ int get_parts_for_update(const uchar *old_data, const uchar *new_data,
calculate the partition id.
*/
int get_part_for_delete(const uchar *buf, const uchar *rec0,
partition_info *part_info, uint32 *part_id)
int get_part_for_buf(const uchar *buf, const uchar *rec0,
partition_info *part_info, uint32 *part_id)
{
int error;
longlong func_value;
DBUG_ENTER("get_part_for_delete");
DBUG_ENTER("get_part_for_buf");
if (likely(buf == rec0))
if (buf == rec0)
{
if (unlikely((error= part_info->get_partition_id(part_info, part_id,
&func_value))))
{
DBUG_RETURN(error);
}
DBUG_PRINT("info", ("Delete from partition %d", *part_id));
error= part_info->get_partition_id(part_info, part_id, &func_value);
if (unlikely((error)))
goto err;
DBUG_PRINT("info", ("Partition %d", *part_id));
}
else
{
@ -360,12 +287,13 @@ int get_part_for_delete(const uchar *buf, const uchar *rec0,
error= part_info->get_partition_id(part_info, part_id, &func_value);
part_info->table->move_fields(part_field_array, rec0, buf);
if (unlikely(error))
{
DBUG_RETURN(error);
}
DBUG_PRINT("info", ("Delete from partition %d (path2)", *part_id));
goto err;
DBUG_PRINT("info", ("Partition %d (path2)", *part_id));
}
DBUG_RETURN(0);
err:
part_info->err_value= func_value;
DBUG_RETURN(error);
}