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Viewing changes to drizzled/optimizer/range_param.h

  • Committer: Dennis Schoen
  • Date: 2010-02-03 08:50:56 UTC
  • mfrom: (1280 build)
  • mto: This revision was merged to the branch mainline in revision 1292.
  • Revision ID: dennis@blogma.de-20100203085056-nswlw9e0tkje5ojj
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drizzled/optimizer/range_param.h
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class RangeParameter
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{
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public:
 
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  RangeParameter()
 
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    :
 
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      session(NULL),
 
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      table(NULL),
 
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      cond(NULL),
 
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      prev_tables(),
 
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      read_tables(),
 
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      current_table(),
 
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      key_parts(NULL),
 
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      key_parts_end(NULL),
 
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      mem_root(NULL),
 
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      old_root(NULL),
 
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      keys(0),
 
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      using_real_indexes(false),
 
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      remove_jump_scans(false),
 
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      alloced_sel_args(0),
 
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      force_default_mrr(false)
 
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  {}
 
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  Session       *session;   /* Current thread handle */
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  Table *table; /* Table being analyzed */
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  COND *cond;   /* Used inside get_mm_tree(). */
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class Parameter : public RangeParameter
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{
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public:
 
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  Parameter()
 
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    :
 
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      RangeParameter(),
 
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      max_key_part(0),
 
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      range_count(0),
 
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      quick(false),
 
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      fields_bitmap_size(0),
 
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      needed_fields(),
 
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      tmp_covered_fields(),
 
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      needed_reg(NULL),
 
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      imerge_cost_buff(NULL),
 
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      imerge_cost_buff_size(0),
 
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      is_ror_scan(false),
 
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      n_ranges(0)
 
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  {}
 
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  KEY_PART *key[MAX_KEY]; /* First key parts of keys used in the query */
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  uint32_t max_key_part;
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  /* Number of ranges in the last checked tree->key */
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  uint32_t range_count;
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  unsigned char min_key[MAX_KEY_LENGTH+MAX_FIELD_WIDTH],
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    max_key[MAX_KEY_LENGTH+MAX_FIELD_WIDTH];
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  bool quick;                           // Don't calulate possible keys
 
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  unsigned char min_key[MAX_KEY_LENGTH+MAX_FIELD_WIDTH];
 
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  unsigned char max_key[MAX_KEY_LENGTH+MAX_FIELD_WIDTH];
 
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  bool quick; // Don't calulate possible keys
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  uint32_t fields_bitmap_size;
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  MyBitmap needed_fields;    /* bitmask of fields needed by the query */