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  • Committer: lbieber at stabletransit
  • Date: 2010-10-19 14:03:27 UTC
  • mfrom: (1861.1.2 build)
  • Revision ID: lbieber@drizzle-build-n02.wc1.dfw1.stabletransit.com-20101019140327-2jvt5j2wi4pzhm1z
Merge Brian - Small collection of cleanups/refactor'ing around locks
Merge Monty - fix a few things in the tarball

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drizzled/item/field.cc
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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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 *
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 *  Copyright (C) 2008 Sun Microsystems, Inc.
 
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 *  Copyright (C) 2008 Sun Microsystems
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 *
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 *  This program is free software; you can redistribute it and/or modify
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 *  it under the terms of the GNU General Public License as published by
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{
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  Table *table= (Table *) arg;
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  if (field->getTable() == table || !table)
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    field->getTable()->setReadSet(field->position());
 
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    field->getTable()->setReadSet(field->field_index);
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  return 0;
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}
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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= getSession().getLex()->current_select;
 
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  Select_Lex *select= current_session->lex->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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type::Decimal *Item_field::val_decimal(type::Decimal *decimal_value)
 
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my_decimal *Item_field::val_decimal(my_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(type::Time &ltime,uint32_t fuzzydate)
 
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bool Item_field::get_date(DRIZZLE_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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    ltime.reset();
 
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    memset(ltime, 0, sizeof(*ltime));
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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(type::Time &ltime,uint32_t fuzzydate)
 
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bool Item_field::get_date_result(DRIZZLE_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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    ltime.reset();
 
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    memset(ltime, 0, sizeof(*ltime));
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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(type::Time &ltime)
 
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bool Item_field::get_time(DRIZZLE_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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    ltime.reset();
 
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    memset(ltime, 0, sizeof(*ltime));
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    return 1;
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  }
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  return 0;
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}
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type::Decimal *Item_field::val_decimal_result(type::Decimal *decimal_value)
 
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my_decimal *Item_field::val_decimal_result(my_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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      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 not val->isZero();
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      return 0;
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    }
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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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    if (val)
 
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      return !my_decimal_is_zero(val);
 
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    return 0;
 
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  }
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  case REAL_RESULT:
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  case STRING_RESULT:
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    return result_field->val_real() != 0.0;
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  case ROW_RESULT:
 
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  default:
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    assert(0);
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    return 0;                                   // Shut up compiler
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  }
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  assert(0);
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  return 0;                                   // Shut up compiler
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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 (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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  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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}
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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= false;
 
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          prev_subselect_item->const_item_cache= 0;
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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= false;
 
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    prev_subselect_item->const_item_cache= 0;
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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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      Item_ref *rf;
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      rf= new Item_ref(context,
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                       (cached_table->getSchemaName()[0] ? cached_table->getSchemaName() : 0),
 
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                       (cached_table->db[0] ? cached_table->db : 0),
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                       (char*) cached_table->alias, (char*) field_name);
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      if (!rf)
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        return -1;
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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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                       session->where());
 
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                       current_session->where);
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              return(1);
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            }
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      current_bitmap= table->write_set;
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      other_bitmap=   table->read_set;
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    }
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    //if (! current_bitmap->testAndSet(field->position()))
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    if (! current_bitmap->test(field->position()))
 
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    //if (! current_bitmap->testAndSet(field->field_index))
 
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    if (! current_bitmap->test(field->field_index))
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    {
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      if (! other_bitmap->test(field->position()))
 
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      if (! other_bitmap->test(field->field_index))
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      {
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        /* First usage of column */
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        table->used_fields++;                     // Used to optimize loops
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  {
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    char buff[MAX_FIELD_WIDTH];
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    String tmp(buff,sizeof(buff),str->charset());
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    field->val_str_internal(&tmp);
 
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    field->val_str(&tmp);
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    if (field->is_null())  {
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      str->append("NULL");
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    }