← Back to branch summary

~drizzle-trunk/drizzle/development

« back to all changes in this revision

Viewing changes to drizzled/sql_base.h

  • Committer: Brian Aker
  • Date: 2009-02-05 10:38:55 UTC
  • Revision ID: brian@tangent.org-20090205103855-wajzccrbu7zbvmh4
Reworked some classes out of session.h
Also updated ignore file.

Show diffs side-by-side

added added

removed removed

Lines of Context:
drizzled/sql_base.h
 
1
/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
 
2
 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
 
3
 *
 
4
 *  Copyright (C) 2008 Sun Microsystems
 
5
 *
 
6
 *  This program is free software; you can redistribute it and/or modify
 
7
 *  it under the terms of the GNU General Public License as published by
 
8
 *  the Free Software Foundation; version 2 of the License.
 
9
 *
 
10
 *  This program is distributed in the hope that it will be useful,
 
11
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 
12
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
13
 *  GNU General Public License for more details.
 
14
 *
 
15
 *  You should have received a copy of the GNU General Public License
 
16
 *  along with this program; if not, write to the Free Software
 
17
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
18
 */
 
19
 
 
20
#ifndef DRIZZLED_SQL_BASE_H
 
21
#define DRIZZLED_SQL_BASE_H
 
22
 
 
23
#include <stdint.h>
 
24
#include <drizzled/table.h>
 
25
 
 
26
class TABLE_SHARE;
 
27
 
 
28
void table_cache_free(void);
 
29
bool table_cache_init(void);
 
30
bool table_def_init(void);
 
31
void table_def_free(void);
 
32
void assign_new_table_id(TABLE_SHARE *share);
 
33
uint32_t cached_open_tables(void);
 
34
uint32_t cached_table_definitions(void);
 
35
 
 
36
void kill_drizzle(void);
 
37
 
 
38
/* sql_base.cc */
 
39
#define TMP_TABLE_KEY_EXTRA 8
 
40
void set_item_name(Item *item,char *pos,uint32_t length);
 
41
bool add_field_to_list(Session *session, LEX_STRING *field_name, enum enum_field_types type,
 
42
                       char *length, char *decimal,
 
43
                       uint32_t type_modifier,
 
44
                       enum column_format_type column_format,
 
45
                       Item *default_value, Item *on_update_value,
 
46
                       LEX_STRING *comment,
 
47
                       char *change, List<String> *interval_list,
 
48
                       const CHARSET_INFO * const cs,
 
49
                       virtual_column_info *vcol_info);
 
50
Create_field * new_create_field(Session *session, char *field_name, enum_field_types type,
 
51
                                char *length, char *decimals,
 
52
                                uint32_t type_modifier,
 
53
                                Item *default_value, Item *on_update_value,
 
54
                                LEX_STRING *comment, char *change,
 
55
                                List<String> *interval_list, CHARSET_INFO *cs,
 
56
                                virtual_column_info *vcol_info);
 
57
void store_position_for_column(const char *name);
 
58
bool add_to_list(Session *session, SQL_LIST &list,Item *group,bool asc);
 
59
bool push_new_name_resolution_context(Session *session,
 
60
                                      TableList *left_op,
 
61
                                      TableList *right_op);
 
62
void add_join_on(TableList *b,Item *expr);
 
63
void add_join_natural(TableList *a,TableList *b,List<String> *using_fields,
 
64
                      SELECT_LEX *lex);
 
65
bool add_proc_to_list(Session *session, Item *item);
 
66
void unlink_open_table(Session *session, Table *find, bool unlock);
 
67
void drop_open_table(Session *session, Table *table, const char *db_name,
 
68
                     const char *table_name);
 
69
void update_non_unique_table_error(TableList *update,
 
70
                                   const char *operation,
 
71
                                   TableList *duplicate);
 
72
 
 
73
SQL_SELECT *make_select(Table *head, table_map const_tables,
 
74
                        table_map read_tables, COND *conds,
 
75
                        bool allow_null_cond,  int *error);
 
76
extern Item **not_found_item;
 
77
 
 
78
/*
 
79
  A set of constants used for checking non aggregated fields and sum
 
80
  functions mixture in the ONLY_FULL_GROUP_BY_MODE.
 
81
*/
 
82
#define NON_AGG_FIELD_USED  1
 
83
#define SUM_FUNC_USED       2
 
84
 
 
85
/*
 
86
  This enumeration type is used only by the function find_item_in_list
 
87
  to return the info on how an item has been resolved against a list
 
88
  of possibly aliased items.
 
89
  The item can be resolved:
 
90
   - against an alias name of the list's element (RESOLVED_AGAINST_ALIAS)
 
91
   - against non-aliased field name of the list  (RESOLVED_WITH_NO_ALIAS)
 
92
   - against an aliased field name of the list   (RESOLVED_BEHIND_ALIAS)
 
93
   - ignoring the alias name in cases when SQL requires to ignore aliases
 
94
     (e.g. when the resolved field reference contains a table name or
 
95
     when the resolved item is an expression)   (RESOLVED_IGNORING_ALIAS)
 
96
*/
 
97
enum enum_resolution_type {
 
98
  NOT_RESOLVED=0,
 
99
  RESOLVED_IGNORING_ALIAS,
 
100
  RESOLVED_BEHIND_ALIAS,
 
101
  RESOLVED_WITH_NO_ALIAS,
 
102
  RESOLVED_AGAINST_ALIAS
 
103
};
 
104
Item ** find_item_in_list(Item *item, List<Item> &items, uint32_t *counter,
 
105
                          find_item_error_report_type report_error,
 
106
                          enum_resolution_type *resolution);
 
107
bool get_key_map_from_key_list(key_map *map, Table *table,
 
108
                               List<String> *index_list);
 
109
bool insert_fields(Session *session, Name_resolution_context *context,
 
110
                   const char *db_name, const char *table_name,
 
111
                   List_iterator<Item> *it, bool any_privileges);
 
112
bool setup_tables(Session *session, Name_resolution_context *context,
 
113
                  List<TableList> *from_clause, TableList *tables,
 
114
                  TableList **leaves, bool select_insert);
 
115
bool setup_tables_and_check_access(Session *session,
 
116
                                   Name_resolution_context *context,
 
117
                                   List<TableList> *from_clause,
 
118
                                   TableList *tables,
 
119
                                   TableList **leaves,
 
120
                                   bool select_insert);
 
121
int setup_wild(Session *session, TableList *tables, List<Item> &fields,
 
122
               List<Item> *sum_func_list, uint32_t wild_num);
 
123
bool setup_fields(Session *session, Item** ref_pointer_array,
 
124
                  List<Item> &item, enum_mark_columns mark_used_columns,
 
125
                  List<Item> *sum_func_list, bool allow_sum_func);
 
126
inline bool setup_fields_with_no_wrap(Session *session, Item **ref_pointer_array,
 
127
                                      List<Item> &item,
 
128
                                      enum_mark_columns mark_used_columns,
 
129
                                      List<Item> *sum_func_list,
 
130
                                      bool allow_sum_func)
 
131
{
 
132
  bool res;
 
133
  res= setup_fields(session, ref_pointer_array, item, mark_used_columns, sum_func_list,
 
134
                    allow_sum_func);
 
135
  return res;
 
136
}
 
137
int setup_conds(Session *session, TableList *tables, TableList *leaves,
 
138
                COND **conds);
 
139
int setup_ftfuncs(SELECT_LEX* select);
 
140
int init_ftfuncs(Session *session, SELECT_LEX* select, bool no_order);
 
141
void wait_for_condition(Session *session, pthread_mutex_t *mutex,
 
142
                        pthread_cond_t *cond);
 
143
int open_tables(Session *session, TableList **tables, uint32_t *counter, uint32_t flags);
 
144
/* open_and_lock_tables with optional derived handling */
 
145
int open_and_lock_tables_derived(Session *session, TableList *tables, bool derived);
 
146
/* simple open_and_lock_tables without derived handling */
 
147
inline int simple_open_n_lock_tables(Session *session, TableList *tables)
 
148
{
 
149
  return open_and_lock_tables_derived(session, tables, false);
 
150
}
 
151
/* open_and_lock_tables with derived handling */
 
152
inline int open_and_lock_tables(Session *session, TableList *tables)
 
153
{
 
154
  return open_and_lock_tables_derived(session, tables, true);
 
155
}
 
156
/* simple open_and_lock_tables without derived handling for single table */
 
157
Table *open_n_lock_single_table(Session *session, TableList *table_l,
 
158
                                thr_lock_type lock_type);
 
159
bool open_normal_and_derived_tables(Session *session, TableList *tables, uint32_t flags);
 
160
int lock_tables(Session *session, TableList *tables, uint32_t counter, bool *need_reopen);
 
161
int decide_logging_format(Session *session);
 
162
Table *open_temporary_table(Session *session, const char *path, const char *db,
 
163
                            const char *table_name, bool link_in_list,
 
164
                            open_table_mode open_mode);
 
165
bool rm_temporary_table(handlerton *base, char *path);
 
166
void free_io_cache(Table *entry);
 
167
void intern_close_table(Table *entry);
 
168
bool close_thread_table(Session *session, Table **table_ptr);
 
169
void close_temporary_tables(Session *session);
 
170
void close_tables_for_reopen(Session *session, TableList **tables);
 
171
TableList *find_table_in_list(TableList *table,
 
172
                               TableList *TableList::*link,
 
173
                               const char *db_name,
 
174
                               const char *table_name);
 
175
TableList *unique_table(Session *session, TableList *table, TableList *table_list,
 
176
                         bool check_alias);
 
177
Table *find_temporary_table(Session *session, const char *db, const char *table_name);
 
178
Table *find_temporary_table(Session *session, TableList *table_list);
 
179
int drop_temporary_table(Session *session, TableList *table_list);
 
180
void close_temporary_table(Session *session, Table *table, bool free_share,
 
181
                           bool delete_table);
 
182
void close_temporary(Table *table, bool free_share, bool delete_table);
 
183
bool rename_temporary_table(Session* session, Table *table, const char *new_db,
 
184
                            const char *table_name);
 
185
void remove_db_from_cache(const char *db);
 
186
void flush_tables();
 
187
bool is_equal(const LEX_STRING *a, const LEX_STRING *b);
 
188
 
 
189
/* bits for last argument to remove_table_from_cache() */
 
190
#define RTFC_NO_FLAG                0x0000
 
191
#define RTFC_OWNED_BY_Session_FLAG      0x0001
 
192
#define RTFC_WAIT_OTHER_THREAD_FLAG 0x0002
 
193
#define RTFC_CHECK_KILLED_FLAG      0x0004
 
194
bool remove_table_from_cache(Session *session, const char *db, const char *table,
 
195
                             uint32_t flags);
 
196
 
 
197
#define NORMAL_PART_NAME 0
 
198
#define TEMP_PART_NAME 1
 
199
#define RENAMED_PART_NAME 2
 
200
 
 
201
void mem_alloc_error(size_t size);
 
202
 
 
203
#define WFRM_WRITE_SHADOW 1
 
204
#define WFRM_INSTALL_SHADOW 2
 
205
#define WFRM_PACK_FRM 4
 
206
#define WFRM_KEEP_SHARE 8
 
207
 
 
208
bool close_cached_tables(Session *session, TableList *tables, bool have_lock,
 
209
                         bool wait_for_refresh, bool wait_for_placeholders);
 
210
bool close_cached_connection_tables(Session *session, bool wait_for_refresh,
 
211
                                    LEX_STRING *connect_string,
 
212
                                    bool have_lock= false);
 
213
void copy_field_from_tmp_record(Field *field,int offset);
 
214
bool fill_record(Session * session, List<Item> &fields, List<Item> &values, bool ignore_errors);
 
215
bool fill_record(Session *session, Field **field, List<Item> &values, bool ignore_errors);
 
216
OPEN_TableList *list_open_tables(const char *db, const char *wild);
 
217
 
 
218
inline TableList *find_table_in_global_list(TableList *table,
 
219
                                             const char *db_name,
 
220
                                             const char *table_name)
 
221
{
 
222
  return find_table_in_list(table, &TableList::next_global,
 
223
                            db_name, table_name);
 
224
}
 
225
 
 
226
inline TableList *find_table_in_local_list(TableList *table,
 
227
                                            const char *db_name,
 
228
                                            const char *table_name)
 
229
{
 
230
  return find_table_in_list(table, &TableList::next_local,
 
231
                            db_name, table_name);
 
232
}
 
233
 
 
234
 
 
235
 
 
236
 
 
237
#endif /* DRIZZLED_SQL_BASE_H */