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Viewing changes to drizzled/item/field.cc

  • Committer: Brian Aker
  • Date: 2011-02-12 06:56:00 UTC
  • mto: This revision was merged to the branch mainline in revision 2161.
  • Revision ID: brian@tangent.org-20110212065600-m6c68fybw51rflhj
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drizzled/item/field.cc
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   have_privileges(0),
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   any_privileges(0)
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{
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  Select_Lex *select= current_session->lex->current_select;
 
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  Select_Lex *select= getSession().getLex()->current_select;
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  collation.set(DERIVATION_IMPLICIT);
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  if (select && select->parsing_place != IN_HAVING)
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}
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my_decimal *Item_field::val_decimal(my_decimal *decimal_value)
 
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type::Decimal *Item_field::val_decimal(type::Decimal *decimal_value)
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{
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  if ((null_value= field->is_null()))
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    return 0;
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  return result_field->val_str(str,&str_value);
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}
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bool Item_field::get_date(DRIZZLE_TIME *ltime,uint32_t fuzzydate)
 
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bool Item_field::get_date(type::Time &ltime,uint32_t fuzzydate)
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{
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  if ((null_value=field->is_null()) || field->get_date(ltime,fuzzydate))
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  {
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    memset(ltime, 0, sizeof(*ltime));
 
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    ltime.reset();
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    return 1;
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  }
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  return 0;
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}
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bool Item_field::get_date_result(DRIZZLE_TIME *ltime,uint32_t fuzzydate)
 
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bool Item_field::get_date_result(type::Time &ltime,uint32_t fuzzydate)
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{
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  if ((null_value=result_field->is_null()) ||
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      result_field->get_date(ltime,fuzzydate))
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  {
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    memset(ltime, 0, sizeof(*ltime));
 
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    ltime.reset();
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    return 1;
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  }
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  return 0;
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}
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bool Item_field::get_time(DRIZZLE_TIME *ltime)
 
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bool Item_field::get_time(type::Time &ltime)
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{
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  if ((null_value=field->is_null()) || field->get_time(ltime))
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  {
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    memset(ltime, 0, sizeof(*ltime));
 
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    ltime.reset();
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    return 1;
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  }
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  return 0;
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}
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my_decimal *Item_field::val_decimal_result(my_decimal *decimal_value)
 
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type::Decimal *Item_field::val_decimal_result(type::Decimal *decimal_value)
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{
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  if ((null_value= result_field->is_null()))
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    return 0;
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bool Item_field::val_bool_result()
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{
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  if ((null_value= result_field->is_null()))
 
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  {
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    return false;
 
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  }
 
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  switch (result_field->result_type()) {
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  case INT_RESULT:
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    return result_field->val_int() != 0;
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  case DECIMAL_RESULT:
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    {
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      my_decimal decimal_value;
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      my_decimal *val= result_field->val_decimal(&decimal_value);
 
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      type::Decimal decimal_value;
 
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      type::Decimal *val= result_field->val_decimal(&decimal_value);
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      if (val)
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        return !my_decimal_is_zero(val);
 
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        return not val->isZero();
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      return 0;
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    }
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    (In cases where we would choose wrong we would have to generate a
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    ER_NON_UNIQ_ERROR).
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  */
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  return (!my_strcasecmp(system_charset_info, item_field->name,
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                         field_name) &&
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          (!item_field->table_name || !table_name ||
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           (!my_strcasecmp(table_alias_charset, item_field->table_name,
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                           table_name) &&
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            (!item_field->db_name || !db_name ||
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             (item_field->db_name && !strcasecmp(item_field->db_name,
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                                             db_name))))));
 
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  return (not my_strcasecmp(system_charset_info, item_field->name, field_name) &&
 
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          (not item_field->table_name || not table_name ||
 
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           (not my_strcasecmp(table_alias_charset, item_field->table_name, table_name) &&
 
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            (not item_field->db_name || not db_name ||
 
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             (item_field->db_name && not my_strcasecmp(system_charset_info, item_field->db_name, db_name))))));
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}
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table_map Item_field::used_tables() const
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{
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  if (field->getTable()->const_table)
 
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  {
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    return 0;                                   // const item
 
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  }
 
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  return (depended_from ? OUTER_REF_TABLE_BIT : field->getTable()->map);
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}
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        if (*from_field != view_ref_found)
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        {
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          prev_subselect_item->used_tables_cache|= (*from_field)->getTable()->map;
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          prev_subselect_item->const_item_cache= 0;
 
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          prev_subselect_item->const_item_cache= false;
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          set_field(*from_field);
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          if (!last_checked_context->select_lex->having_fix_field &&
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              select->group_list.elements &&
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      case it does not matter which used tables bits we set)
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    */
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    prev_subselect_item->used_tables_cache|= OUTER_REF_TABLE_BIT;
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    prev_subselect_item->const_item_cache= 0;
 
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    prev_subselect_item->const_item_cache= false;
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  }
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  assert(ref != 0);
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    if (upward_lookup)
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    {
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      // We can't say exactly what absent table or field
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      my_error(ER_BAD_FIELD_ERROR, MYF(0), full_name(), session->where);
 
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      my_error(ER_BAD_FIELD_ERROR, MYF(0), full_name(), session->where());
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    }
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    else
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    {
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            {
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              /* The column to which we link isn't valid. */
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              my_error(ER_BAD_FIELD_ERROR, MYF(0), (*res)->name,
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                       current_session->where);
 
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                       session->where());
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              return(1);
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            }
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