~drizzle-trunk/drizzle/development

#include <drizzled/server_includes.h>

#include <drizzled/natural_join_column.h>

Natural_join_column::Natural_join_column(Field_translator *field_param __attribute__((unused)), TableList *tab)

{

  assert(tab->field_translation);

  table_field= NULL;

  table_ref= tab;

  is_common= false;

}

Natural_join_column::Natural_join_column(Field *field_param,

                                         TableList *tab)

{

  assert(tab->table == field_param->table);

  table_field= field_param;

  table_ref= tab;

  is_common= false;

}

const char *Natural_join_column::name()

{

  return table_field->field_name;

}

Item *Natural_join_column::create_item(Session *session)

{

  return new Item_field(session, &session->lex->current_select->context, table_field);

}

Field *Natural_join_column::field()

{

  return table_field;

}

const char *Natural_join_column::table_name()

{

  assert(table_ref);

  return table_ref->alias;

}

const char *Natural_join_column::db_name()

{

  /*

    Test that TableList::db is the same as st_table_share::db to

    ensure consistency. An exception are I_S schema tables, which

    are inconsistent in this respect.

  */

  assert(!strcmp(table_ref->db,

                      table_ref->table->s->db.str) ||

              (table_ref->schema_table &&

               table_ref->table->s->db.str[0] == 0));

  return table_ref->db;

}