1237.13.13
by Padraig O'Sullivan
Moved the QUICK_ROR_UNION_SELECT class into its own header and implementation files. |
1 |
/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
|
2 |
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
|
|
3 |
*
|
|
1999.6.1
by kalebral at gmail
update Copyright strings to a more common format to help with creating the master debian copyright file |
4 |
* Copyright (C) 2008-2009 Sun Microsystems, Inc.
|
1237.13.13
by Padraig O'Sullivan
Moved the QUICK_ROR_UNION_SELECT class into its own header and implementation files. |
5 |
*
|
6 |
* This program is free software; you can redistribute it and/or modify
|
|
7 |
* it under the terms of the GNU General Public License as published by
|
|
8 |
* the Free Software Foundation; version 2 of the License.
|
|
9 |
*
|
|
10 |
* This program is distributed in the hope that it will be useful,
|
|
11 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
12 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
13 |
* GNU General Public License for more details.
|
|
14 |
*
|
|
15 |
* You should have received a copy of the GNU General Public License
|
|
16 |
* along with this program; if not, write to the Free Software
|
|
17 |
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
18 |
*/
|
|
19 |
||
2234
by Brian Aker
Mass removal of ifdef/endif in favor of pragma once. |
20 |
#pragma once
|
1237.13.13
by Padraig O'Sullivan
Moved the QUICK_ROR_UNION_SELECT class into its own header and implementation files. |
21 |
|
2173.2.1
by Monty Taylor
Fixes incorrect usage of include |
22 |
#include <drizzled/optimizer/range.h> |
1237.13.13
by Padraig O'Sullivan
Moved the QUICK_ROR_UNION_SELECT class into its own header and implementation files. |
23 |
|
1237.13.15
by Padraig O'Sullivan
Used std::vector instead of List in the QuickRorUnionSelect class. |
24 |
#include <vector> |
25 |
||
2252.1.21
by Olaf van der Spek
Common fwd |
26 |
namespace drizzled { |
27 |
namespace optimizer { |
|
1237.13.13
by Padraig O'Sullivan
Moved the QUICK_ROR_UNION_SELECT class into its own header and implementation files. |
28 |
|
29 |
/**
|
|
30 |
Rowid-Ordered Retrieval index union select.
|
|
31 |
This quick select produces union of row sequences returned by several
|
|
32 |
quick select it "merges".
|
|
33 |
||
34 |
All merged quick selects must return rowids in rowid order.
|
|
1237.13.14
by Padraig O'Sullivan
Corrected some style issues in quick_ror_union_select.[cc,h] and range.cc |
35 |
QuickRorUnionSelect will return rows in rowid order, too.
|
1237.13.13
by Padraig O'Sullivan
Moved the QUICK_ROR_UNION_SELECT class into its own header and implementation files. |
36 |
|
37 |
All merged quick selects are set not to retrieve full table records.
|
|
38 |
ROR-union quick select always retrieves full records.
|
|
39 |
||
40 |
*/
|
|
1237.13.14
by Padraig O'Sullivan
Corrected some style issues in quick_ror_union_select.[cc,h] and range.cc |
41 |
class QuickRorUnionSelect : public QuickSelectInterface |
1237.13.13
by Padraig O'Sullivan
Moved the QUICK_ROR_UNION_SELECT class into its own header and implementation files. |
42 |
{
|
43 |
public: |
|
1237.13.14
by Padraig O'Sullivan
Corrected some style issues in quick_ror_union_select.[cc,h] and range.cc |
44 |
QuickRorUnionSelect(Session *session, Table *table); |
45 |
~QuickRorUnionSelect(); |
|
1237.13.13
by Padraig O'Sullivan
Moved the QUICK_ROR_UNION_SELECT class into its own header and implementation files. |
46 |
|
1237.13.14
by Padraig O'Sullivan
Corrected some style issues in quick_ror_union_select.[cc,h] and range.cc |
47 |
/**
|
48 |
* Do post-constructor initialization.
|
|
49 |
* SYNOPSIS
|
|
50 |
* QuickRorUnionSelect::init()
|
|
51 |
*
|
|
52 |
* RETURN
|
|
53 |
* @retval 0 OK
|
|
54 |
* @retval other Error code
|
|
55 |
*/
|
|
1237.13.13
by Padraig O'Sullivan
Moved the QUICK_ROR_UNION_SELECT class into its own header and implementation files. |
56 |
int init(); |
1237.13.14
by Padraig O'Sullivan
Corrected some style issues in quick_ror_union_select.[cc,h] and range.cc |
57 |
|
58 |
/**
|
|
59 |
* Initialize quick select for row retrieval.
|
|
60 |
* SYNOPSIS
|
|
61 |
* reset()
|
|
62 |
*
|
|
63 |
* RETURN
|
|
64 |
* @retval 0 OK
|
|
65 |
* @retval other Error code
|
|
66 |
*/
|
|
1237.13.13
by Padraig O'Sullivan
Moved the QUICK_ROR_UNION_SELECT class into its own header and implementation files. |
67 |
int reset(void); |
1237.13.14
by Padraig O'Sullivan
Corrected some style issues in quick_ror_union_select.[cc,h] and range.cc |
68 |
|
69 |
/**
|
|
70 |
* Retrieve next record.
|
|
71 |
* SYNOPSIS
|
|
72 |
* QuickRorUnionSelect::get_next()
|
|
73 |
*
|
|
74 |
* NOTES
|
|
75 |
* Enter/exit invariant:
|
|
76 |
* For each quick select in the queue a {key,rowid} tuple has been
|
|
77 |
* retrieved but the corresponding row hasn't been passed to output.
|
|
78 |
*
|
|
79 |
* RETURN
|
|
80 |
* @retval 0 - Ok
|
|
81 |
* @retval other - Error code if any error occurred.
|
|
82 |
*/
|
|
1237.13.13
by Padraig O'Sullivan
Moved the QUICK_ROR_UNION_SELECT class into its own header and implementation files. |
83 |
int get_next(); |
84 |
||
85 |
bool reverse_sorted() const |
|
86 |
{
|
|
87 |
return false; |
|
88 |
}
|
|
89 |
||
90 |
bool unique_key_range() const |
|
91 |
{
|
|
92 |
return false; |
|
93 |
}
|
|
94 |
||
95 |
int get_type() const |
|
96 |
{
|
|
97 |
return QS_TYPE_ROR_UNION; |
|
98 |
}
|
|
99 |
||
2170.4.4
by Stewart Smith
tmp3 String to std::string in explain_plan (and used_lengths parameter to add_keys_and_lengths |
100 |
void add_keys_and_lengths(std::string *key_names, std::string *used_lengths); |
2170.4.5
by Stewart Smith
convert explain_plan extra String to std::string. This means that add_info_string() also gets converted to std::string |
101 |
void add_info_string(std::string *str); |
1802.16.6
by Padraig O'Sullivan
Added temporary conversion of a bitmap to dynamic_bitset in order to remove references to MyBitmap within optimizer code. |
102 |
bool is_keys_used(const boost::dynamic_bitset<>& fields); |
1237.13.13
by Padraig O'Sullivan
Moved the QUICK_ROR_UNION_SELECT class into its own header and implementation files. |
103 |
|
2318.6.52
by Olaf van der Spek
Refactor |
104 |
void push_quick_back(QuickSelectInterface *quick_sel_range); |
1237.13.13
by Padraig O'Sullivan
Moved the QUICK_ROR_UNION_SELECT class into its own header and implementation files. |
105 |
|
1237.13.15
by Padraig O'Sullivan
Used std::vector instead of List in the QuickRorUnionSelect class. |
106 |
std::vector<QuickSelectInterface *> quick_selects; /**< Merged quick selects */ |
1237.13.13
by Padraig O'Sullivan
Moved the QUICK_ROR_UNION_SELECT class into its own header and implementation files. |
107 |
|
108 |
/** Priority queue for merge operation */
|
|
109 |
std::priority_queue<QuickSelectInterface *, std::vector<QuickSelectInterface *>, compare_functor > *queue; |
|
1280.1.10
by Monty Taylor
Put everything in drizzled into drizzled namespace. |
110 |
memory::Root alloc; /**< Memory pool for this and merged quick selects data. */ |
1237.13.13
by Padraig O'Sullivan
Moved the QUICK_ROR_UNION_SELECT class into its own header and implementation files. |
111 |
|
112 |
Session *session; /**< current thread */ |
|
113 |
unsigned char *cur_rowid; /**< buffer used in get_next() */ |
|
114 |
unsigned char *prev_rowid; /**< rowid of last row returned by get_next() */ |
|
115 |
bool have_prev_rowid; /**< true if prev_rowid has valid data */ |
|
116 |
uint32_t rowid_length; /**< table rowid length */ |
|
117 |
private: |
|
118 |
bool scans_inited; |
|
119 |
};
|
|
120 |
||
121 |
} /* namespace optimizer */ |
|
122 |
||
123 |
} /* namespace drizzled */ |
|
124 |