104 lines
3.4 KiB
C++
104 lines
3.4 KiB
C++
/*
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Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
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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 also distributed 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 included with MySQL.
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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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*/
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#ifndef ATTRINFO_HPP
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#define ATTRINFO_HPP
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#include "SignalData.hpp"
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#define JAM_FILE_ID 185
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class AttrInfo {
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/**
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* Sender(s)
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*/
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friend class DbUtil;
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/**
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* Receiver(s)
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*/
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friend class Dbtup;
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/**
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* Sender(s) / Receiver(s)
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*/
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friend class Dbtc;
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friend class Dblqh;
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friend class NdbScanOperation;
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friend class Restore;
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friend class NdbOperation;
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friend bool printATTRINFO(FILE *, const Uint32 *, Uint32, Uint16);
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public:
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STATIC_CONST( HeaderLength = 3 );
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STATIC_CONST( DataLength = 22 );
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STATIC_CONST( MaxSignalLength = HeaderLength + DataLength );
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STATIC_CONST( SectionSizeInfoLength = 5 );
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private:
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Uint32 connectPtr;
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Uint32 transId[2];
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Uint32 attrData[DataLength];
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};
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/*
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A train of ATTRINFO signals is used to specify attributes to read or
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attributes and values to insert/update in TCKEYREQ, and to specify
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attributes to read in SCAN_TABREQ.
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The ATTRINFO signal train defines a stream of attribute info words. (Note
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that for TCKEYREQ, the first five words are stored inside the TCKEYREQ
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signal. For SCAN_TABREQ, all attribute info words are sent in ATTRINFO
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signals).
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For SCAN_TABREQ, and TCKEYREQ for read or update with interpreted code,
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the attribute information can have up to five sections. The initial
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five words of the stream defines the length of the sections, followed
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by the words of each section in sequence.
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The sections are:
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1. Attributes to read before starting any interpreted program.
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2. Interpreted program.
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3. Attributes to update after running interpreted program.
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4. Attributes to read after interpreted program.
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5. Subroutine data.
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The formats of sections that specify attributes to read or update is a
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sequence of entries, each (1+N) words:
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1 word specifying the AttributeHeader (attribute id in upper 16 bits, and
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size in bytes of data in lower 16 bits).
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N words of data (N = (data byte length+3)>>2).
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For specifying attributes to read, the data length is always zero.
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For an index range scan of a table using an ordered index, the attribute IDs
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refer to columns in the underlying table, not to columns being indexed, so
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all attributes in the underlying table being indexed are accessible.
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*/
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#undef JAM_FILE_ID
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#endif
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