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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 */
/**
* An enum and a struct to handle partitioning and subpartitioning.
*/
enum partition_type {
NOT_A_PARTITION= 0,
RANGE_PARTITION,
HASH_PARTITION,
LIST_PARTITION
};
enum partition_state {
PART_NORMAL= 0,
PART_IS_DROPPED= 1,
PART_TO_BE_DROPPED= 2,
PART_TO_BE_ADDED= 3,
PART_TO_BE_REORGED= 4,
PART_REORGED_DROPPED= 5,
PART_CHANGED= 6,
PART_IS_CHANGED= 7,
PART_IS_ADDED= 8
};
/*
This struct is used to contain the value of an element
in the VALUES IN struct. It needs to keep knowledge of
whether it is a signed/unsigned value and whether it is
NULL or not.
*/
typedef struct p_elem_val
{
longlong value;
bool null_value;
bool unsigned_flag;
} part_elem_value;
struct st_ddl_log_memory_entry;
class partition_element :public Sql_alloc {
public:
List<partition_element> subpartitions;
List<part_elem_value> list_val_list;
ha_rows part_max_rows;
ha_rows part_min_rows;
longlong range_value;
char *partition_name;
char *tablespace_name;
struct st_ddl_log_memory_entry *log_entry;
char* part_comment;
char* data_file_name;
char* index_file_name;
handlerton *engine_type;
LEX_STRING connect_string;
enum partition_state part_state;
uint16 nodegroup_id;
bool has_null_value;
bool signed_flag;/* Indicate whether this partition uses signed constants */
bool max_value; /* Indicate whether this partition uses MAXVALUE */
partition_element()
: part_max_rows(0), part_min_rows(0), range_value(0),
partition_name(NULL), tablespace_name(NULL),
log_entry(NULL), part_comment(NULL),
data_file_name(NULL), index_file_name(NULL),
engine_type(NULL), part_state(PART_NORMAL),
nodegroup_id(UNDEF_NODEGROUP), has_null_value(FALSE),
signed_flag(FALSE), max_value(FALSE)
{
connect_string.str= 0;
connect_string.length= 0;
}
partition_element(partition_element *part_elem)
: part_max_rows(part_elem->part_max_rows),
part_min_rows(part_elem->part_min_rows),
range_value(0), partition_name(NULL),
tablespace_name(part_elem->tablespace_name),
part_comment(part_elem->part_comment),
data_file_name(part_elem->data_file_name),
index_file_name(part_elem->index_file_name),
engine_type(part_elem->engine_type),
connect_string(part_elem->connect_string),
part_state(part_elem->part_state),
nodegroup_id(part_elem->nodegroup_id),
has_null_value(FALSE)
{
connect_string.str= 0;
connect_string.length= 0;
}
~partition_element() {}
};
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