uint sp_get_flags_for_command()

in sql/sp.cc [2411:2544]

• 126 lines of code
• 94 McCabe index (conditional complexity)

uint sp_get_flags_for_command(LEX *lex)
{
  uint flags;

  switch (lex->sql_command) {
  case SQLCOM_SELECT:
    if (lex->result)
    {
      flags= 0;                      /* This is a SELECT with INTO clause */
      break;
    }
    /* fallthrough */
  case SQLCOM_ANALYZE:
  case SQLCOM_OPTIMIZE:
  case SQLCOM_PRELOAD_KEYS:
  case SQLCOM_ASSIGN_TO_KEYCACHE:
  case SQLCOM_CHECKSUM:
  case SQLCOM_CHECK:
  case SQLCOM_HA_READ:
  case SQLCOM_SHOW_BINLOGS:
  case SQLCOM_SHOW_BINLOG_EVENTS:
  case SQLCOM_SHOW_BINLOG_CACHE:
  case SQLCOM_SHOW_RELAYLOG_EVENTS:
  case SQLCOM_SHOW_CHARSETS:
  case SQLCOM_SHOW_COLLATIONS:
  case SQLCOM_SHOW_CREATE:
  case SQLCOM_SHOW_CREATE_DB:
  case SQLCOM_SHOW_CREATE_FUNC:
  case SQLCOM_SHOW_CREATE_PROC:
  case SQLCOM_SHOW_CREATE_EVENT:
  case SQLCOM_SHOW_CREATE_TRIGGER:
  case SQLCOM_SHOW_DATABASES:
  case SQLCOM_SHOW_ERRORS:
  case SQLCOM_SHOW_FIELDS:
  case SQLCOM_SHOW_FUNC_CODE:
  case SQLCOM_SHOW_GRANTS:
  case SQLCOM_SHOW_ENGINE_STATUS:
  case SQLCOM_SHOW_ENGINE_LOGS:
  case SQLCOM_SHOW_ENGINE_MUTEX:
  case SQLCOM_SHOW_ENGINE_TRX:
  case SQLCOM_SHOW_EVENTS:
  case SQLCOM_SHOW_KEYS:
  case SQLCOM_SHOW_MASTER_STAT:
  case SQLCOM_SHOW_MEMORY_STATUS:
  case SQLCOM_SHOW_OPEN_TABLES:
  case SQLCOM_SHOW_PRIVILEGES:
  case SQLCOM_SHOW_PROCESSLIST:
  case SQLCOM_SHOW_PROC_CODE:
  case SQLCOM_SHOW_SLAVE_HOSTS:
  case SQLCOM_SHOW_SLAVE_STAT:
  case SQLCOM_SHOW_STATUS:
  case SQLCOM_SHOW_STATUS_FUNC:
  case SQLCOM_SHOW_STATUS_PROC:
  case SQLCOM_SHOW_STORAGE_ENGINES:
  case SQLCOM_SHOW_TABLES:
  case SQLCOM_SHOW_TABLE_STATUS:
  case SQLCOM_SHOW_VARIABLES:
  case SQLCOM_SHOW_WARNS:
  case SQLCOM_REPAIR:
  case SQLCOM_FIND_GTID_POSITION:
    flags= sp_head::MULTI_RESULTS;
    break;
  /*
    EXECUTE statement may return a result set, but doesn't have to.
    We can't, however, know it in advance, and therefore must add
    this statement here. This is ok, as is equivalent to a result-set
    statement within an IF condition.
  */
  case SQLCOM_EXECUTE:
    flags= sp_head::MULTI_RESULTS | sp_head::CONTAINS_DYNAMIC_SQL;
    break;
  case SQLCOM_PREPARE:
  case SQLCOM_DEALLOCATE_PREPARE:
    flags= sp_head::CONTAINS_DYNAMIC_SQL;
    break;
  case SQLCOM_CREATE_TABLE:
    if (lex->create_info.options & HA_LEX_CREATE_TMP_TABLE)
      flags= 0;
    else
      flags= sp_head::HAS_COMMIT_OR_ROLLBACK;
    break;
  case SQLCOM_DROP_TABLE:
    if (lex->drop_temporary)
      flags= 0;
    else
      flags= sp_head::HAS_COMMIT_OR_ROLLBACK;
    break;
  case SQLCOM_FLUSH:
    flags= sp_head::HAS_SQLCOM_FLUSH;
    break;
  case SQLCOM_RESET:
    flags= sp_head::HAS_SQLCOM_RESET;
    break;
  case SQLCOM_CREATE_INDEX:
  case SQLCOM_CREATE_DB:
  case SQLCOM_CREATE_VIEW:
  case SQLCOM_CREATE_TRIGGER:
  case SQLCOM_CREATE_USER:
  case SQLCOM_ALTER_TABLE:
  case SQLCOM_GRANT:
  case SQLCOM_REVOKE:
  case SQLCOM_BEGIN:
  case SQLCOM_RENAME_TABLE:
  case SQLCOM_RENAME_USER:
  case SQLCOM_DROP_INDEX:
  case SQLCOM_DROP_DB:
  case SQLCOM_REVOKE_ALL:
  case SQLCOM_DROP_USER:
  case SQLCOM_DROP_VIEW:
  case SQLCOM_DROP_TRIGGER:
  case SQLCOM_TRUNCATE:
  case SQLCOM_COMMIT:
  case SQLCOM_ROLLBACK:
  case SQLCOM_LOAD:
  case SQLCOM_LOCK_TABLES:
  case SQLCOM_CREATE_PROCEDURE:
  case SQLCOM_CREATE_SPFUNCTION:
  case SQLCOM_ALTER_PROCEDURE:
  case SQLCOM_ALTER_FUNCTION:
  case SQLCOM_DROP_PROCEDURE:
  case SQLCOM_DROP_FUNCTION:
  case SQLCOM_CREATE_EVENT:
  case SQLCOM_ALTER_EVENT:
  case SQLCOM_DROP_EVENT:
  case SQLCOM_INSTALL_PLUGIN:
  case SQLCOM_UNINSTALL_PLUGIN:
    flags= sp_head::HAS_COMMIT_OR_ROLLBACK;
    break;
  default:
    flags= lex->describe ? sp_head::MULTI_RESULTS : 0;
    break;
  }
  return flags;
}