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Viewing changes to drizzled/statement/create_table.cc

  • Committer: Lee Bieber
  • Date: 2011-01-08 03:39:25 UTC
  • mfrom: (2062.1.2 build)
  • Revision ID: kalebral@gmail.com-20110108033925-koobar399kwrm4ba
Merge Brian - parser clean up
Merge Marisa - latest doc updates, fix sphinx warnings

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Lines of Context:
drizzled/statement/create_table.cc
36
36
  TableList *first_table= (TableList *) session->lex->select_lex.table_list.first;
37
37
  TableList *all_tables= session->lex->query_tables;
38
38
  assert(first_table == all_tables && first_table != 0);
39
 
  Select_Lex *select_lex= &session->lex->select_lex;
40
 
  Select_Lex_Unit *unit= &session->lex->unit;
41
39
  bool need_start_waiting= false;
42
 
  bool res= false;
43
 
  bool link_to_local= false;
44
 
  bool lex_identified_temp_table= 
45
 
    create_table_message.type() == message::Table::TEMPORARY;
 
40
  lex_identified_temp_table= createTableMessage().type() == message::Table::TEMPORARY;
 
41
 
 
42
  is_engine_set= not createTableMessage().engine().name().empty();
46
43
 
47
44
  if (is_engine_set)
48
45
  {
49
 
    create_info.db_type= 
50
 
      plugin::StorageEngine::findByName(*session, create_table_message.engine().name());
 
46
    create_info().db_type= 
 
47
      plugin::StorageEngine::findByName(*session, createTableMessage().engine().name());
51
48
 
52
 
    if (create_info.db_type == NULL)
 
49
    if (create_info().db_type == NULL)
53
50
    {
54
51
      my_error(ER_UNKNOWN_STORAGE_ENGINE, MYF(0), 
55
 
               create_table_message.engine().name().c_str());
 
52
               createTableMessage().engine().name().c_str());
56
53
 
57
54
      return true;
58
55
    }
59
56
  }
60
57
  else /* We now get the default, place it in create_info, and put the engine name in table proto */
61
58
  {
62
 
    create_info.db_type= session->getDefaultStorageEngine();
 
59
    create_info().db_type= session->getDefaultStorageEngine();
63
60
  }
64
61
 
65
62
  if (not validateCreateTableOption())
77
74
    }
78
75
  }
79
76
  /* Skip first table, which is the table we are creating */
80
 
  TableList *create_table_list= session->lex->unlink_first_table(&link_to_local);
81
 
  TableList *select_tables= session->lex->query_tables;
 
77
  create_table_list= session->lex->unlink_first_table(&link_to_local);
82
78
 
83
 
  drizzled::message::init(create_table_message, create_table_message.name(), create_table_list->getSchemaName(), create_info.db_type->getName());
 
79
  drizzled::message::init(createTableMessage(), createTableMessage().name(), create_table_list->getSchemaName(), create_info().db_type->getName());
84
80
 
85
81
  TableIdentifier new_table_identifier(create_table_list->getSchemaName(),
86
82
                                       create_table_list->getTableName(),
87
 
                                       create_table_message.type());
 
83
                                       createTableMessage().type());
88
84
 
89
85
  if (not check(new_table_identifier))
90
86
  {
94
90
  }
95
91
 
96
92
  /* Might have been updated in create_table_precheck */
97
 
  create_info.alias= create_table_list->alias;
 
93
  create_info().alias= create_table_list->alias;
98
94
 
99
95
  /*
100
96
     The create-select command will open and read-lock the select table
116
112
    return true;
117
113
  }
118
114
 
119
 
  if (select_lex->item_list.elements)           // With select
120
 
  {
121
 
    select_result *result;
122
 
 
123
 
    select_lex->options|= SELECT_NO_UNLOCK;
124
 
    unit->set_limit(select_lex);
125
 
 
126
 
    if (not lex_identified_temp_table)
127
 
    {
128
 
      session->lex->link_first_table_back(create_table_list, link_to_local);
129
 
      create_table_list->setCreate(true);
130
 
    }
131
 
 
132
 
    if (not (res= session->openTablesLock(session->lex->query_tables)))
133
 
    {
134
 
      /*
135
 
         Is table which we are changing used somewhere in other parts
136
 
         of query
137
 
       */
 
115
  bool res= executeInner(new_table_identifier);
 
116
 
 
117
  /*
 
118
    Release the protection against the global read lock and wake
 
119
    everyone, who might want to set a global read lock.
 
120
  */
 
121
  session->startWaitingGlobalReadLock();
 
122
 
 
123
  return res;
 
124
}
 
125
 
 
126
bool statement::CreateTable::executeInner(TableIdentifier::const_reference new_table_identifier)
 
127
{
 
128
  bool res= false;
 
129
  Select_Lex *select_lex= &session->lex->select_lex;
 
130
  TableList *select_tables= session->lex->query_tables;
 
131
 
 
132
  do {
 
133
    if (select_lex->item_list.elements)         // With select
 
134
    {
 
135
      Select_Lex_Unit *unit= &session->lex->unit;
 
136
      select_result *result;
 
137
 
 
138
      select_lex->options|= SELECT_NO_UNLOCK;
 
139
      unit->set_limit(select_lex);
 
140
 
138
141
      if (not lex_identified_temp_table)
139
142
      {
140
 
        TableList *duplicate= NULL;
 
143
        session->lex->link_first_table_back(create_table_list, link_to_local);
 
144
        create_table_list->setCreate(true);
 
145
      }
 
146
 
 
147
      if (not (res= session->openTablesLock(session->lex->query_tables)))
 
148
      {
 
149
        /*
 
150
          Is table which we are changing used somewhere in other parts
 
151
          of query
 
152
        */
 
153
        if (not lex_identified_temp_table)
 
154
        {
 
155
          TableList *duplicate= NULL;
 
156
          create_table_list= session->lex->unlink_first_table(&link_to_local);
 
157
 
 
158
          if ((duplicate= unique_table(create_table_list, select_tables)))
 
159
          {
 
160
            my_error(ER_UPDATE_TABLE_USED, MYF(0), create_table_list->alias);
 
161
            /* put tables back for PS rexecuting */
 
162
            session->lex->link_first_table_back(create_table_list, link_to_local);
 
163
 
 
164
            res= true;
 
165
            break;
 
166
          }
 
167
        }
 
168
 
 
169
        /*
 
170
          select_create is currently not re-execution friendly and
 
171
          needs to be created for every execution of a PS/SP.
 
172
        */
 
173
        if ((result= new select_create(create_table_list,
 
174
                                       session->getLex()->exists(),
 
175
                                       &create_info(),
 
176
                                       createTableMessage(),
 
177
                                       &alter_info,
 
178
                                       select_lex->item_list,
 
179
                                       session->lex->duplicates,
 
180
                                       session->lex->ignore,
 
181
                                       select_tables,
 
182
                                       new_table_identifier)))
 
183
        {
 
184
          /*
 
185
            CREATE from SELECT give its Select_Lex for SELECT,
 
186
            and item_list belong to SELECT
 
187
          */
 
188
          res= handle_select(session, session->lex, result, 0);
 
189
          delete result;
 
190
        }
 
191
      }
 
192
      else if (not lex_identified_temp_table)
 
193
      {
141
194
        create_table_list= session->lex->unlink_first_table(&link_to_local);
142
 
        if ((duplicate= unique_table(create_table_list, select_tables)))
143
 
        {
144
 
          my_error(ER_UPDATE_TABLE_USED, MYF(0), create_table_list->alias);
145
 
          /*
146
 
             Release the protection against the global read lock and wake
147
 
             everyone, who might want to set a global read lock.
148
 
           */
149
 
          session->startWaitingGlobalReadLock();
150
 
          /* put tables back for PS rexecuting */
151
 
          session->lex->link_first_table_back(create_table_list, link_to_local);
152
 
 
153
 
          return true;
154
 
        }
155
 
      }
156
 
 
157
 
      /*
158
 
         select_create is currently not re-execution friendly and
159
 
         needs to be created for every execution of a PS/SP.
160
 
       */
161
 
      if ((result= new select_create(create_table_list,
162
 
                                     is_if_not_exists,
163
 
                                     &create_info,
164
 
                                     create_table_message,
165
 
                                     &alter_info,
166
 
                                     select_lex->item_list,
167
 
                                     session->lex->duplicates,
168
 
                                     session->lex->ignore,
169
 
                                     select_tables,
170
 
                                     new_table_identifier)))
171
 
      {
172
 
        /*
173
 
           CREATE from SELECT give its Select_Lex for SELECT,
174
 
           and item_list belong to SELECT
175
 
         */
176
 
        res= handle_select(session, session->lex, result, 0);
177
 
        delete result;
178
 
      }
179
 
    }
180
 
    else if (not lex_identified_temp_table)
181
 
    {
182
 
      create_table_list= session->lex->unlink_first_table(&link_to_local);
183
 
    }
184
 
  }
185
 
  else
186
 
  {
187
 
    /* regular create */
188
 
    if (is_create_table_like)
189
 
    {
190
 
      res= create_like_table(session, 
191
 
                                   new_table_identifier,
192
 
                                   create_table_list, 
193
 
                                   select_tables,
194
 
                                   create_table_message,
195
 
                                   is_if_not_exists,
196
 
                                   is_engine_set);
 
195
      }
197
196
    }
198
197
    else
199
198
    {
200
 
 
201
 
      for (int32_t x= 0; x < alter_info.alter_proto.added_field_size(); x++)
202
 
      {
203
 
        message::Table::Field *field= create_table_message.add_field();
204
 
 
205
 
        *field= alter_info.alter_proto.added_field(x);
206
 
      }
207
 
 
208
 
      res= create_table(session, 
209
 
                              new_table_identifier,
210
 
                              &create_info,
211
 
                              create_table_message,
212
 
                              &alter_info, 
213
 
                              false, 
214
 
                              0,
215
 
                              is_if_not_exists);
216
 
    }
217
 
 
218
 
    if (not res)
219
 
    {
220
 
      session->my_ok();
221
 
    }
222
 
  }
223
 
 
224
 
  /*
225
 
     Release the protection against the global read lock and wake
226
 
     everyone, who might want to set a global read lock.
227
 
   */
228
 
  session->startWaitingGlobalReadLock();
 
199
      /* regular create */
 
200
      if (is_create_table_like)
 
201
      {
 
202
        res= create_like_table(session, 
 
203
                               new_table_identifier,
 
204
                               create_table_list, 
 
205
                               select_tables,
 
206
                               createTableMessage(),
 
207
                               session->getLex()->exists(),
 
208
                               is_engine_set);
 
209
      }
 
210
      else
 
211
      {
 
212
 
 
213
        for (int32_t x= 0; x < alter_info.alter_proto.added_field_size(); x++)
 
214
        {
 
215
          message::Table::Field *field= createTableMessage().add_field();
 
216
 
 
217
          *field= alter_info.alter_proto.added_field(x);
 
218
        }
 
219
 
 
220
        res= create_table(session, 
 
221
                          new_table_identifier,
 
222
                          &create_info(),
 
223
                          createTableMessage(),
 
224
                          &alter_info, 
 
225
                          false, 
 
226
                          0,
 
227
                          session->getLex()->exists());
 
228
      }
 
229
 
 
230
      if (not res)
 
231
      {
 
232
        session->my_ok();
 
233
      }
 
234
    }
 
235
  } while (0);
229
236
 
230
237
  return res;
231
238
}
259
266
bool statement::CreateTable::validateCreateTableOption()
260
267
{
261
268
  bool rc= true;
262
 
  size_t num_engine_options= create_table_message.engine().options_size();
 
269
  size_t num_engine_options= createTableMessage().engine().options_size();
263
270
 
264
 
  assert(create_info.db_type);
 
271
  assert(create_info().db_type);
265
272
 
266
273
  for (size_t y= 0; y < num_engine_options; ++y)
267
274
  {
268
 
    bool valid= create_info.db_type->validateCreateTableOption(create_table_message.engine().options(y).name(),
269
 
                                                               create_table_message.engine().options(y).state());
 
275
    bool valid= create_info().db_type->validateCreateTableOption(createTableMessage().engine().options(y).name(),
 
276
                                                                 createTableMessage().engine().options(y).state());
270
277
 
271
278
    if (not valid)
272
279
    {
273
280
      my_error(ER_UNKNOWN_ENGINE_OPTION, MYF(0),
274
 
               create_table_message.engine().options(y).name().c_str(),
275
 
               create_table_message.engine().options(y).state().c_str());
 
281
               createTableMessage().engine().options(y).name().c_str(),
 
282
               createTableMessage().engine().options(y).state().c_str());
276
283
 
277
284
      rc= false;
278
285
    }