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MySQL 5.1: QUICK_SELECT_I Class Reference

QUICK_SELECT_I Class Reference

#include <opt_range.h>

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List of all members.

Public Types

 QS_TYPE_RANGE = 0
 QS_TYPE_INDEX_MERGE = 1
 QS_TYPE_RANGE_DESC = 2
 QS_TYPE_FULLTEXT = 3
 QS_TYPE_ROR_INTERSECT = 4
 QS_TYPE_ROR_UNION = 5
 QS_TYPE_GROUP_MIN_MAX = 6
enum  {
  QS_TYPE_RANGE = 0, QS_TYPE_INDEX_MERGE = 1, QS_TYPE_RANGE_DESC = 2, QS_TYPE_FULLTEXT = 3,
  QS_TYPE_ROR_INTERSECT = 4, QS_TYPE_ROR_UNION = 5, QS_TYPE_GROUP_MIN_MAX = 6
}

Public Member Functions

 QUICK_SELECT_I ()
virtual ~QUICK_SELECT_I ()
virtual int init ()=0
virtual int reset (void)=0
virtual int get_next ()=0
virtual void range_end ()
virtual bool reverse_sorted ()=0
virtual bool unique_key_range ()
virtual int get_type ()=0
virtual int init_ror_merged_scan (bool reuse_handler)
virtual void save_last_pos ()
virtual void add_keys_and_lengths (String *key_names, String *used_lengths)=0
virtual void add_info_string (String *str)
virtual bool check_if_keys_used (List< Item > *fields)
virtual void dbug_dump (int indent, bool verbose)=0

Public Attributes

bool sorted
ha_rows records
double read_time
TABLE * head
uint index
uint max_used_key_length
uint used_key_parts
byte * last_rowid
byte * record

Detailed Description

Definition at line 102 of file opt_range.h.

Member Enumeration Documentation

anonymous enum

Enumerator:
QS_TYPE_RANGE 
QS_TYPE_INDEX_MERGE 
QS_TYPE_RANGE_DESC 
QS_TYPE_FULLTEXT 
QS_TYPE_ROR_INTERSECT 
QS_TYPE_ROR_UNION 
QS_TYPE_GROUP_MIN_MAX 

Definition at line 176 of file opt_range.h.

00176        {
00177     QS_TYPE_RANGE = 0,
00178     QS_TYPE_INDEX_MERGE = 1,
00179     QS_TYPE_RANGE_DESC = 2,
00180     QS_TYPE_FULLTEXT   = 3,
00181     QS_TYPE_ROR_INTERSECT = 4,
00182     QS_TYPE_ROR_UNION = 5,
00183     QS_TYPE_GROUP_MIN_MAX = 6
00184   };

Constructor & Destructor Documentation

QUICK_SELECT_I::QUICK_SELECT_I (  ) 

Definition at line 925 of file opt_range.cc.

00926   :max_used_key_length(0),
00927    used_key_parts(0)
00928 {}

virtual QUICK_SELECT_I::~QUICK_SELECT_I (  )  [inline, virtual]

Definition at line 129 of file opt_range.h.

00129 {};

Member Function Documentation

virtual void QUICK_SELECT_I::add_info_string ( String *  str  )  [inline, virtual]

Reimplemented in QUICK_RANGE_SELECT, QUICK_INDEX_MERGE_SELECT, QUICK_ROR_INTERSECT_SELECT, and QUICK_ROR_UNION_SELECT.

Definition at line 224 of file opt_range.h.

Referenced by select_describe().

00224 {};

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virtual void QUICK_SELECT_I::add_keys_and_lengths ( String *  key_names,
String *  used_lengths 
) [pure virtual]

Implemented in QUICK_RANGE_SELECT, QUICK_INDEX_MERGE_SELECT, QUICK_ROR_INTERSECT_SELECT, QUICK_ROR_UNION_SELECT, and QUICK_GROUP_MIN_MAX_SELECT.

Referenced by select_describe().

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bool QUICK_SELECT_I::check_if_keys_used ( List< Item > *  fields  )  [virtual]

Reimplemented in QUICK_INDEX_MERGE_SELECT, QUICK_ROR_INTERSECT_SELECT, and QUICK_ROR_UNION_SELECT.

Definition at line 7421 of file opt_range.cc.

References check_if_key_used(), head, and index.

Referenced by safe_update_on_fly().

07422 {
07423   return check_if_key_used(head, index, *fields);
07424 }

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virtual void QUICK_SELECT_I::dbug_dump ( int  indent,
bool  verbose 
) [pure virtual]

Implemented in QUICK_RANGE_SELECT, QUICK_INDEX_MERGE_SELECT, QUICK_ROR_INTERSECT_SELECT, QUICK_ROR_UNION_SELECT, and QUICK_GROUP_MIN_MAX_SELECT.

virtual int QUICK_SELECT_I::get_next (  )  [pure virtual]

Implemented in QUICK_RANGE_SELECT, QUICK_RANGE_SELECT_GEOM, QUICK_INDEX_MERGE_SELECT, QUICK_ROR_INTERSECT_SELECT, QUICK_ROR_UNION_SELECT, QUICK_GROUP_MIN_MAX_SELECT, QUICK_SELECT_DESC, and FT_SELECT.

Referenced by rr_quick().

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virtual int QUICK_SELECT_I::get_type (  )  [pure virtual]

Implemented in QUICK_RANGE_SELECT, QUICK_INDEX_MERGE_SELECT, QUICK_ROR_INTERSECT_SELECT, QUICK_ROR_UNION_SELECT, QUICK_GROUP_MIN_MAX_SELECT, QUICK_SELECT_DESC, and FT_SELECT.

Referenced by st_join_table::is_using_loose_index_scan(), select_describe(), and test_if_skip_sort_order().

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virtual int QUICK_SELECT_I::init (  )  [pure virtual]

Implemented in QUICK_RANGE_SELECT, QUICK_INDEX_MERGE_SELECT, QUICK_ROR_INTERSECT_SELECT, QUICK_ROR_UNION_SELECT, QUICK_GROUP_MIN_MAX_SELECT, and FT_SELECT.

Referenced by SQL_SELECT::test_quick_select().

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virtual int QUICK_SELECT_I::init_ror_merged_scan ( bool  reuse_handler  )  [inline, virtual]

Reimplemented in QUICK_RANGE_SELECT, and QUICK_ROR_INTERSECT_SELECT.

Definition at line 202 of file opt_range.h.

References DBUG_ASSERT.

00203   { DBUG_ASSERT(0); return 1; }

virtual void QUICK_SELECT_I::range_end (  )  [inline, virtual]

Reimplemented in QUICK_RANGE_SELECT.

Definition at line 171 of file opt_range.h.

00171 {}

virtual int QUICK_SELECT_I::reset ( void   )  [pure virtual]

Implemented in QUICK_RANGE_SELECT, QUICK_INDEX_MERGE_SELECT, QUICK_ROR_INTERSECT_SELECT, QUICK_ROR_UNION_SELECT, QUICK_GROUP_MIN_MAX_SELECT, QUICK_SELECT_DESC, and FT_SELECT.

Referenced by find_all_keys(), join_init_read_record(), mysql_delete(), and prepare_simple_select().

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virtual bool QUICK_SELECT_I::reverse_sorted (  )  [pure virtual]

Implemented in QUICK_RANGE_SELECT, QUICK_INDEX_MERGE_SELECT, QUICK_ROR_INTERSECT_SELECT, QUICK_ROR_UNION_SELECT, QUICK_GROUP_MIN_MAX_SELECT, and QUICK_SELECT_DESC.

Referenced by test_if_skip_sort_order().

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virtual void QUICK_SELECT_I::save_last_pos (  )  [inline, virtual]

Reimplemented in QUICK_RANGE_SELECT.

Definition at line 208 of file opt_range.h.

00208 {};

virtual bool QUICK_SELECT_I::unique_key_range (  )  [inline, virtual]

Reimplemented in QUICK_RANGE_SELECT, QUICK_INDEX_MERGE_SELECT, QUICK_ROR_INTERSECT_SELECT, QUICK_ROR_UNION_SELECT, and QUICK_GROUP_MIN_MAX_SELECT.

Definition at line 174 of file opt_range.h.

00174 { return false; }

Member Data Documentation

TABLE* QUICK_SELECT_I::head

Definition at line 108 of file opt_range.h.

Referenced by QUICK_ROR_INTERSECT_SELECT::add_info_string(), QUICK_RANGE_SELECT::add_info_string(), QUICK_ROR_INTERSECT_SELECT::add_keys_and_lengths(), QUICK_INDEX_MERGE_SELECT::add_keys_and_lengths(), QUICK_RANGE_SELECT::add_keys_and_lengths(), QUICK_ROR_INTERSECT_SELECT::check_if_keys_used(), QUICK_INDEX_MERGE_SELECT::check_if_keys_used(), check_if_keys_used(), QUICK_RANGE_SELECT::dbug_dump(), find_all_keys(), QUICK_RANGE_SELECT::get_next(), QUICK_ROR_UNION_SELECT::get_next(), QUICK_ROR_INTERSECT_SELECT::get_next(), QUICK_ROR_UNION_SELECT::init(), QUICK_ROR_INTERSECT_SELECT::init_ror_merged_scan(), QUICK_RANGE_SELECT::init_ror_merged_scan(), QUICK_GROUP_MIN_MAX_SELECT::next_min_in_range(), QUICK_INDEX_MERGE_SELECT::push_quick_back(), QUICK_GROUP_MIN_MAX_SELECT::QUICK_GROUP_MIN_MAX_SELECT(), QUICK_INDEX_MERGE_SELECT::QUICK_INDEX_MERGE_SELECT(), QUICK_RANGE_SELECT::QUICK_RANGE_SELECT(), QUICK_ROR_INTERSECT_SELECT::QUICK_ROR_INTERSECT_SELECT(), QUICK_ROR_UNION_SELECT::QUICK_ROR_UNION_SELECT(), QUICK_SELECT_DESC::QUICK_SELECT_DESC(), QUICK_SELECT_DESC::range_reads_after_key(), QUICK_INDEX_MERGE_SELECT::read_keys_and_merge(), QUICK_RANGE_SELECT::reset(), QUICK_ROR_UNION_SELECT::reset(), QUICK_RANGE_SELECT::unique_key_range(), QUICK_RANGE_SELECT::~QUICK_RANGE_SELECT(), QUICK_ROR_INTERSECT_SELECT::~QUICK_ROR_INTERSECT_SELECT(), and QUICK_ROR_UNION_SELECT::~QUICK_ROR_UNION_SELECT().

uint QUICK_SELECT_I::index

Definition at line 113 of file opt_range.h.

Referenced by QUICK_ROR_INTERSECT_SELECT::add_info_string(), QUICK_RANGE_SELECT::add_info_string(), QUICK_ROR_INTERSECT_SELECT::add_keys_and_lengths(), QUICK_INDEX_MERGE_SELECT::add_keys_and_lengths(), QUICK_RANGE_SELECT::add_keys_and_lengths(), best_access_path(), check_if_keys_used(), create_sort_index(), QUICK_GROUP_MIN_MAX_SELECT::dbug_dump(), QUICK_RANGE_SELECT::dbug_dump(), QUICK_RANGE_SELECT::init(), QUICK_RANGE_SELECT::init_ror_merged_scan(), make_join_readinfo(), QUICK_INDEX_MERGE_SELECT::push_quick_back(), QUICK_GROUP_MIN_MAX_SELECT::QUICK_GROUP_MIN_MAX_SELECT(), QUICK_INDEX_MERGE_SELECT::QUICK_INDEX_MERGE_SELECT(), QUICK_RANGE_SELECT::QUICK_RANGE_SELECT(), QUICK_ROR_INTERSECT_SELECT::QUICK_ROR_INTERSECT_SELECT(), QUICK_ROR_UNION_SELECT::QUICK_ROR_UNION_SELECT(), QUICK_SELECT_DESC::QUICK_SELECT_DESC(), QUICK_SELECT_DESC::range_reads_after_key(), QUICK_GROUP_MIN_MAX_SELECT::reset(), QUICK_RANGE_SELECT::reset(), test_if_skip_sort_order(), and QUICK_RANGE_SELECT::unique_key_range().

byte* QUICK_SELECT_I::last_rowid

Definition at line 236 of file opt_range.h.

Referenced by QUICK_ROR_INTERSECT_SELECT::get_next(), QUICK_ROR_INTERSECT_SELECT::init(), QUICK_RANGE_SELECT::init_ror_merged_scan(), QUICK_ROR_UNION_SELECT::queue_cmp(), and QUICK_ROR_INTERSECT_SELECT::QUICK_ROR_INTERSECT_SELECT().

uint QUICK_SELECT_I::max_used_key_length

Definition at line 119 of file opt_range.h.

Referenced by QUICK_GROUP_MIN_MAX_SELECT::add_keys_and_lengths(), QUICK_ROR_INTERSECT_SELECT::add_keys_and_lengths(), QUICK_INDEX_MERGE_SELECT::add_keys_and_lengths(), QUICK_RANGE_SELECT::add_keys_and_lengths(), QUICK_GROUP_MIN_MAX_SELECT::dbug_dump(), QUICK_RANGE_SELECT::dbug_dump(), and QUICK_GROUP_MIN_MAX_SELECT::update_key_stat().

double QUICK_SELECT_I::read_time

Definition at line 107 of file opt_range.h.

Referenced by best_access_path(), TRP_ROR_UNION::make_quick(), TRP_ROR_INTERSECT::make_quick(), TRP_INDEX_MERGE::make_quick(), and QUICK_GROUP_MIN_MAX_SELECT::QUICK_GROUP_MIN_MAX_SELECT().

byte* QUICK_SELECT_I::record

Reimplemented in QUICK_GROUP_MIN_MAX_SELECT.

Definition at line 241 of file opt_range.h.

Referenced by QUICK_INDEX_MERGE_SELECT::read_keys_and_merge().

ha_rows QUICK_SELECT_I::records

Definition at line 106 of file opt_range.h.

Referenced by filesort(), get_quick_record_count(), TRP_ROR_UNION::make_quick(), TRP_ROR_INTERSECT::make_quick(), TRP_INDEX_MERGE::make_quick(), QUICK_GROUP_MIN_MAX_SELECT::QUICK_GROUP_MIN_MAX_SELECT(), QUICK_RANGE_SELECT::reset(), and select_describe().

bool QUICK_SELECT_I::sorted

Definition at line 105 of file opt_range.h.

Referenced by QUICK_RANGE_SELECT::get_next(), QUICK_RANGE_SELECT::get_next_prefix(), QUICK_RANGE_SELECT::QUICK_RANGE_SELECT(), and test_if_skip_sort_order().

uint QUICK_SELECT_I::used_key_parts

Definition at line 126 of file opt_range.h.

Referenced by test_if_skip_sort_order().

The documentation for this class was generated from the following files:
Generated on Sat Sep 9 22:58:00 2006 for MySQL 5.1 by  doxygen 1.4.7