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108 lines
3.3 KiB
C++
108 lines
3.3 KiB
C++
/*****************************************************************************
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Copyright (c) 2005, 2016, Oracle and/or its affiliates. All Rights Reserved.
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Copyright (c) 2019, MariaDB Corporation.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
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*****************************************************************************/
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/**************************************************//**
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@file include/handler0alter.h
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Smart ALTER TABLE
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*******************************************************/
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#include "rem0types.h"
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/*************************************************************//**
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Copies an InnoDB record to table->record[0]. */
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void
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innobase_rec_to_mysql(
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/*==================*/
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struct TABLE* table, /*!< in/out: MySQL table */
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const rec_t* rec, /*!< in: record */
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const dict_index_t* index, /*!< in: index */
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const rec_offs* offsets)/*!< in: rec_get_offsets(
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rec, index, ...) */
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MY_ATTRIBUTE((nonnull));
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/*************************************************************//**
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Copies an InnoDB index entry to table->record[0]. */
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void
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innobase_fields_to_mysql(
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/*=====================*/
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struct TABLE* table, /*!< in/out: MySQL table */
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const dict_index_t* index, /*!< in: InnoDB index */
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const dfield_t* fields) /*!< in: InnoDB index fields */
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MY_ATTRIBUTE((nonnull));
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/*************************************************************//**
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Copies an InnoDB row to table->record[0]. */
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void
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innobase_row_to_mysql(
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/*==================*/
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struct TABLE* table, /*!< in/out: MySQL table */
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const dict_table_t* itab, /*!< in: InnoDB table */
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const dtuple_t* row) /*!< in: InnoDB row */
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MY_ATTRIBUTE((nonnull));
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/** Generate the next autoinc based on a snapshot of the session
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auto_increment_increment and auto_increment_offset variables. */
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struct ib_sequence_t {
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/**
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@param thd the session
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@param start_value the lower bound
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@param max_value the upper bound (inclusive) */
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ib_sequence_t(THD* thd, ulonglong start_value, ulonglong max_value);
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/** Postfix increment
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@return the value to insert */
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ulonglong operator++(int) UNIV_NOTHROW;
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/** Check if the autoinc "sequence" is exhausted.
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@return true if the sequence is exhausted */
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bool eof() const UNIV_NOTHROW
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{
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return(m_eof);
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}
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/**
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@return the next value in the sequence */
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ulonglong last() const UNIV_NOTHROW
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{
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ut_ad(m_next_value > 0);
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return(m_next_value);
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}
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/** @return maximum column value
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@retval 0 if not adding AUTO_INCREMENT column */
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ulonglong max_value() const { return m_max_value; }
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private:
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/** Maximum value if adding an AUTO_INCREMENT column, else 0 */
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ulonglong m_max_value;
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/** Value of auto_increment_increment */
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ulong m_increment;
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/** Value of auto_increment_offset */
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ulong m_offset;
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/** Next value in the sequence */
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ulonglong m_next_value;
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/** true if no more values left in the sequence */
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bool m_eof;
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};
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