48 lines
2 KiB
C++
48 lines
2 KiB
C++
/* Copyright (c) 2021, 2024, Oracle and/or its affiliates.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is designed to work with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have either included with
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the program or referenced in the documentation.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifndef SQL_RANGE_OPTIMIZER_ROWID_CAPABLE_ROW_ITERATOR_H_
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#define SQL_RANGE_OPTIMIZER_ROWID_CAPABLE_ROW_ITERATOR_H_
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#include "my_inttypes.h"
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#include "sql/iterators/row_iterator.h"
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/**
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An interface for RowIterators that have a given row ID, ie.,
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they can be children in ROR (rowid-ordered) scans. The only
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examples of this are QUICK_RANGE_SCAN_SELECT and RowIDIntersectionIterator
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(which itself can also be a parent).
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*/
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class RowIDCapableRowIterator : public TableRowIterator {
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public:
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RowIDCapableRowIterator(THD *thd, TABLE *table)
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: TableRowIterator(thd, table) {}
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/*
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Row ID of last row retrieved by this quick select. This is used only when
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doing ROR-index_merge selects. Updated on successful Read().
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*/
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virtual uchar *last_rowid() const = 0;
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};
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#endif // SQL_RANGE_OPTIMIZER_ROWID_CAPABLE_ROW_ITERATOR_H_
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