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Viewing changes to drizzled/tmp_table_param.h

  • Committer: Brian Aker
  • Date: 2009-12-08 23:37:35 UTC
  • mfrom: (1192.3.82 pandora-build)
  • mto: This revision was merged to the branch mainline in revision 1241.
  • Revision ID: brian@gaz-20091208233735-6zfhecyxizlw8bub
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drizzled/tmp_table_param.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 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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#ifndef DRIZZLED_TMP_TABLE_PARAM_H
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#define DRIZZLED_TMP_TABLE_PARAM_H
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namespace drizzled
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{
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/*
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  Param to create temporary tables when doing SELECT:s
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  NOTE
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    This structure is copied using memcpy as a part of JOIN.
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*/
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class Tmp_Table_Param :public memory::SqlAlloc
 
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class Tmp_Table_Param :public Sql_alloc
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{
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private:
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  /* Prevent use of these (not safe because of lists and copy_field) */
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  void operator=(Tmp_Table_Param &);
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public:
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  KeyInfo *keyinfo;
 
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  KEY *keyinfo;
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  List<Item> copy_funcs;
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  List<Item> save_copy_funcs;
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  CopyField *copy_field, *copy_field_end;
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  uint32_t  convert_blob_length;
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  const CHARSET_INFO *table_charset;
 
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  /*
 
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    If true, create_tmp_field called from create_tmp_table will convert
 
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    all BIT fields to 64-bit longs. This is a workaround the limitation
 
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    that MEMORY tables cannot index BIT columns.
 
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  */
 
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  bool bit_fields_as_long;
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  Tmp_Table_Param() :
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    keyinfo(0),
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    copy_funcs(),
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    save_copy_funcs(),
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    copy_field(0),
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    copy_field_end(0),
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    save_copy_field(0),
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    save_copy_field_end(0),
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    group_buff(0),
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    items_to_copy(0),
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    recinfo(0),
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    start_recinfo(0),
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    end_write_records(0),
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    field_count(0),
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    sum_func_count(0),
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    func_count(0),
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    hidden_field_count(0),
 
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  Tmp_Table_Param()
 
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    :copy_field(0),
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    group_parts(0),
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    group_length(0),
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    group_null_parts(0),
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    quick_group(0),
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    using_indirect_summary_function(false),
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    schema_table(false),
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    precomputed_group_by(false),
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    force_copy_fields(false),
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    convert_blob_length(0),
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    table_charset(0)
 
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    bit_fields_as_long(false)
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  {}
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  ~Tmp_Table_Param()
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  {
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    cleanup();
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  void cleanup(void);
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};
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} /* namespace drizzled */
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#endif /* DRIZZLED_TMP_TABLE_PARAM_H */