Method handle_sql_condition

sql/sp_rcontext.cc:516–648

bool sp_rcontext::handle_sql_condition(THD *thd,
                                       uint *ip,
                                       const sp_instr *cur_spi)
{
  DBUG_ENTER("sp_rcontext::handle_sql_condition");

  /*
    If this is a fatal sub-statement error, and this runtime
    context corresponds to a sub-statement, no CONTINUE/EXIT
    handlers from this context are applicable: try to locate one
    in the outer scope.
  */
  if (unlikely(thd->is_fatal_sub_stmt_error) && m_in_sub_stmt)
    DBUG_RETURN(false);

  Diagnostics_area *da= thd->get_stmt_da();
  const sp_handler *found_handler= NULL;
  const Sql_condition *found_condition= NULL;

  if (unlikely(thd->is_error()))
  {
    found_handler=
      cur_spi->m_ctx->find_handler(da->get_error_condition_identity());

    if (found_handler)
      found_condition= da->get_error_condition();

    /*
      Found condition can be NULL if the diagnostics area was full
      when the error was raised. It can also be NULL if
      Diagnostics_area::set_error_status(uint sql_error) was used.
      In these cases, make a temporary Sql_condition here so the
      error can be handled.
    */
    if (!found_condition)
    {
      found_condition=
        new (callers_arena->mem_root) Sql_condition(callers_arena->mem_root,
                                                    da->get_error_condition_identity(),
                                                    da->message(),
                                                    da->current_row_for_warning());
    }
  }
  else if (da->current_statement_warn_count())
  {
    Diagnostics_area::Sql_condition_iterator it= da->sql_conditions();
    const Sql_condition *c;

    // Here we need to find the last warning/note from the stack.
    // In MySQL most substantial warning is the last one.
    // (We could have used a reverse iterator here if one existed)

    while ((c= it++))
    {
      if (c->get_level() == Sql_condition::WARN_LEVEL_WARN ||
          c->get_level() == Sql_condition::WARN_LEVEL_NOTE)
      {
        const sp_handler *handler= cur_spi->m_ctx->find_handler(*c);