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Viewing changes to drizzled/statement/insert_select.cc

  • Committer: Olaf van der Spek
  • Date: 2011-04-05 12:26:58 UTC
  • mto: (2278.1.2 build)
  • mto: This revision was merged to the branch mainline in revision 2272.
  • Revision ID: olafvdspek@gmail.com-20110405122658-xxrvmobwwwwf3oct
Refactor Open_tables_state

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drizzled/statement/insert_select.cc
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#include <drizzled/probes.h>
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#include <drizzled/statement/insert_select.h>
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#include <drizzled/select_insert.h>
 
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#include <drizzled/sql_lex.h>
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namespace drizzled
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{
 
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namespace drizzled {
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bool statement::InsertSelect::execute()
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{
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  TableList *first_table= (TableList *) getSession()->getLex()->select_lex.table_list.first;
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  TableList *all_tables= getSession()->getLex()->query_tables;
 
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  TableList *first_table= (TableList *) lex().select_lex.table_list.first;
 
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  TableList *all_tables= lex().query_tables;
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  assert(first_table == all_tables && first_table != 0);
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  Select_Lex *select_lex= &getSession()->getLex()->select_lex;
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  Select_Lex_Unit *unit= &getSession()->getLex()->unit;
 
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  Select_Lex *select_lex= &lex().select_lex;
 
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  Select_Lex_Unit *unit= &lex().unit;
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  select_result *sel_result= NULL;
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  bool res= false;
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  bool need_start_waiting= false;
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  if (insert_precheck(getSession(), all_tables))
 
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  if (insert_precheck(&session(), all_tables))
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  {
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    return true;
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  }
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  unit->set_limit(select_lex);
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  if (! (need_start_waiting= not getSession()->wait_if_global_read_lock(false, true)))
 
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  if (! (need_start_waiting= not session().wait_if_global_read_lock(false, true)))
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  {
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    return true;
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  }
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  if (! (res= getSession()->openTablesLock(all_tables)))
 
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  if (! (res= session().openTablesLock(all_tables)))
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  {
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    DRIZZLE_INSERT_SELECT_START(getSession()->getQueryString()->c_str());
 
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    DRIZZLE_INSERT_SELECT_START(session().getQueryString()->c_str());
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    /* Skip first table, which is the table we are inserting in */
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    TableList *second_table= first_table->next_local;
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    select_lex->table_list.first= (unsigned char*) second_table;
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    select_lex->context.table_list=
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      select_lex->context.first_name_resolution_table= second_table;
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    res= insert_select_prepare(getSession());
 
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    res= insert_select_prepare(&session());
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    if (! res && (sel_result= new select_insert(first_table,
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                                                first_table->table,
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                                                &getSession()->getLex()->field_list,
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                                                &getSession()->getLex()->update_list,
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                                                &getSession()->getLex()->value_list,
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                                                getSession()->getLex()->duplicates,
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                                                getSession()->getLex()->ignore)))
 
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                                                &lex().field_list,
 
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                                                &lex().update_list,
 
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                                                &lex().value_list,
 
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                                                lex().duplicates,
 
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                                                lex().ignore)))
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    {
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      res= handle_select(getSession(), 
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                         getSession()->getLex(), 
 
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      res= handle_select(&session(), 
 
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                         &lex(), 
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                         sel_result, 
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                         OPTION_SETUP_TABLES_DONE);
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         TODO: this is a workaround. right way will be move invalidating in
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         the unlock procedure.
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       */
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      if (first_table->lock_type == TL_WRITE_CONCURRENT_INSERT && getSession()->lock)
 
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      if (first_table->lock_type == TL_WRITE_CONCURRENT_INSERT && session().open_tables.lock)
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      {
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        /* INSERT ... SELECT should invalidate only the very first table */
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        TableList *save_table= first_table->next_local;
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     Release the protection against the global read lock and wake
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     everyone, who might want to set a global read lock.
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   */
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  getSession()->startWaitingGlobalReadLock();
 
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  session().startWaitingGlobalReadLock();
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  return res;
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}