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  • Committer: Djellel E. Difallah
  • Date: 2010-03-27 10:10:49 UTC
  • mto: This revision was merged to the branch mainline in revision 1429.
  • Revision ID: ded@ubuntu-20100327101049-oo3arvatjoyku124
merge my_decimal and decimal

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drizzled/join_table.h
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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) 2008-2009 Sun Microsystems, Inc.
 
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 *  Copyright (C) 2008-2009 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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#ifndef DRIZZLED_JOIN_TABLE_H
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#define DRIZZLED_JOIN_TABLE_H
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#include <drizzled/enum_nested_loop_state.h>
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#include <drizzled/table_reference.h>
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#include <drizzled/optimizer/range.h>
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#include <drizzled/join_cache.h>
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#include <drizzled/optimizer/key_use.h>
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#include <drizzled/records.h>
 
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#include "drizzled/enum_nested_loop_state.h"
 
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#include "drizzled/table_reference.h"
 
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#include "drizzled/optimizer/range.h"
 
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#include "drizzled/join_cache.h"
 
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#include "drizzled/optimizer/key_use.h"
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#include <bitset>
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namespace drizzled
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{
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class Table;
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namespace optimizer
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{
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  class Position;
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}
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/* Values for JoinTable::packed_info */
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#define TAB_INFO_HAVE_VALUE 1
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#define TAB_INFO_USING_INDEX 2
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#define TAB_INFO_USING_WHERE 4
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#define TAB_INFO_FULL_SCAN_ON_NULL 8
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class Table;
 
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/** Description of an access method */
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enum access_method
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{ 
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  Read_record_func read_first_record;
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  Next_select_func next_select;
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  ReadRecord    read_record;
 
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  READ_RECORD   read_record;
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  /*
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    Currently the following two fields are used only for a [NOT] IN subquery
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    if it is executed by an alternative full table scan when the left operand of
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    the subquery predicate is evaluated to NULL.
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  */
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  Read_record_func save_read_first_record; /**< to save read_first_record */
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  int (*save_read_record) (ReadRecord *); /**< to save read_record.read_record */
 
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  int (*save_read_record) (READ_RECORD *); /**< to save read_record.read_record */
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  double worst_seeks;
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  key_map       const_keys; /**< Keys with constant part */
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  key_map       checked_keys; /**< Keys checked in find_best */
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  */
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  ha_rows limit;
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  table_reference_st    ref;
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  JoinCache cache;
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  Join *join;
 
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  JOIN_CACHE cache;
 
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  JOIN *join;
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  /**
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     ptr  - this join tab should do an InsideOut scan. Points
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  }
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  void readCachedRecord();
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  int joinReadConstTable(optimizer::Position *pos);
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  int joinReadSystem();
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};
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} /* namespace drizzled */