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105 lines
3.1 KiB
C++
105 lines
3.1 KiB
C++
/* Copyright (C) 2006 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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/**
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* An enum and a struct to handle partitioning and subpartitioning.
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*/
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enum partition_type {
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NOT_A_PARTITION= 0,
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RANGE_PARTITION,
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HASH_PARTITION,
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LIST_PARTITION
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};
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enum partition_state {
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PART_NORMAL= 0,
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PART_IS_DROPPED= 1,
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PART_TO_BE_DROPPED= 2,
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PART_TO_BE_ADDED= 3,
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PART_TO_BE_REORGED= 4,
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PART_REORGED_DROPPED= 5,
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PART_CHANGED= 6,
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PART_IS_CHANGED= 7,
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PART_IS_ADDED= 8
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};
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/*
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This struct is used to contain the value of an element
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in the VALUES IN struct. It needs to keep knowledge of
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whether it is a signed/unsigned value and whether it is
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NULL or not.
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*/
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typedef struct p_elem_val
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{
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longlong value;
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bool null_value;
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bool unsigned_flag;
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} part_elem_value;
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struct st_ddl_log_memory_entry;
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class partition_element :public Sql_alloc {
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public:
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List<partition_element> subpartitions;
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List<part_elem_value> list_val_list;
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ha_rows part_max_rows;
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ha_rows part_min_rows;
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longlong range_value;
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char *partition_name;
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char *tablespace_name;
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struct st_ddl_log_memory_entry *log_entry;
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char* part_comment;
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char* data_file_name;
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char* index_file_name;
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handlerton *engine_type;
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LEX_STRING connect_string;
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enum partition_state part_state;
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uint16 nodegroup_id;
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bool has_null_value;
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bool signed_flag;/* Indicate whether this partition uses signed constants */
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bool max_value; /* Indicate whether this partition uses MAXVALUE */
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partition_element()
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: part_max_rows(0), part_min_rows(0), range_value(0),
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partition_name(NULL), tablespace_name(NULL),
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log_entry(NULL), part_comment(NULL),
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data_file_name(NULL), index_file_name(NULL),
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engine_type(NULL), part_state(PART_NORMAL),
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nodegroup_id(UNDEF_NODEGROUP), has_null_value(FALSE),
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signed_flag(FALSE), max_value(FALSE)
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{
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connect_string.str= 0;
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connect_string.length= 0;
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}
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partition_element(partition_element *part_elem)
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: part_max_rows(part_elem->part_max_rows),
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part_min_rows(part_elem->part_min_rows),
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range_value(0), partition_name(NULL),
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tablespace_name(part_elem->tablespace_name),
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part_comment(part_elem->part_comment),
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data_file_name(part_elem->data_file_name),
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index_file_name(part_elem->index_file_name),
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engine_type(part_elem->engine_type),
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connect_string(part_elem->connect_string),
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part_state(part_elem->part_state),
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nodegroup_id(part_elem->nodegroup_id),
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has_null_value(FALSE)
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{
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connect_string.str= 0;
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connect_string.length= 0;
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}
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~partition_element() {}
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};
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