1/*****************************************************************************
2
3Copyright (c) 2005, 2016, Oracle and/or its affiliates. All Rights Reserved.
4
5This program is free software; you can redistribute it and/or modify it under
6the terms of the GNU General Public License as published by the Free Software
7Foundation; version 2 of the License.
8
9This program is distributed in the hope that it will be useful, but WITHOUT
10ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
12
13You should have received a copy of the GNU General Public License along with
14this program; if not, write to the Free Software Foundation, Inc.,
1551 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
16
17*****************************************************************************/
18
19/**************************************************//**
20@file include/handler0alter.h
21Smart ALTER TABLE
22*******************************************************/
23
24/*************************************************************//**
25Copies an InnoDB record to table->record[0]. */
26void
27innobase_rec_to_mysql(
28/*==================*/
29 struct TABLE* table, /*!< in/out: MySQL table */
30 const rec_t* rec, /*!< in: record */
31 const dict_index_t* index, /*!< in: index */
32 const ulint* offsets)/*!< in: rec_get_offsets(
33 rec, index, ...) */
34 MY_ATTRIBUTE((nonnull));
35
36/*************************************************************//**
37Copies an InnoDB index entry to table->record[0]. */
38void
39innobase_fields_to_mysql(
40/*=====================*/
41 struct TABLE* table, /*!< in/out: MySQL table */
42 const dict_index_t* index, /*!< in: InnoDB index */
43 const dfield_t* fields) /*!< in: InnoDB index fields */
44 MY_ATTRIBUTE((nonnull));
45
46/*************************************************************//**
47Copies an InnoDB row to table->record[0]. */
48void
49innobase_row_to_mysql(
50/*==================*/
51 struct TABLE* table, /*!< in/out: MySQL table */
52 const dict_table_t* itab, /*!< in: InnoDB table */
53 const dtuple_t* row) /*!< in: InnoDB row */
54 MY_ATTRIBUTE((nonnull));
55
56/** Generate the next autoinc based on a snapshot of the session
57auto_increment_increment and auto_increment_offset variables. */
58struct ib_sequence_t {
59
60 /**
61 @param thd the session
62 @param start_value the lower bound
63 @param max_value the upper bound (inclusive) */
64 ib_sequence_t(THD* thd, ulonglong start_value, ulonglong max_value);
65
66 /** Postfix increment
67 @return the value to insert */
68 ulonglong operator++(int) UNIV_NOTHROW;
69
70 /** Check if the autoinc "sequence" is exhausted.
71 @return true if the sequence is exhausted */
72 bool eof() const UNIV_NOTHROW
73 {
74 return(m_eof);
75 }
76
77 /**
78 @return the next value in the sequence */
79 ulonglong last() const UNIV_NOTHROW
80 {
81 ut_ad(m_next_value > 0);
82
83 return(m_next_value);
84 }
85
86 /** Maximum calumn value if adding an AUTOINC column else 0. Once
87 we reach the end of the sequence it will be set to ~0. */
88 const ulonglong m_max_value;
89
90 /** Value of auto_increment_increment */
91 ulong m_increment;
92
93 /** Value of auto_increment_offset */
94 ulong m_offset;
95
96 /** Next value in the sequence */
97 ulonglong m_next_value;
98
99 /** true if no more values left in the sequence */
100 bool m_eof;
101};
102