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1) Instead of making dbrm calls to writeVBEntry() per block,
we make these calls per batch. This can have non-trivial
reductions in the overhead of these calls if the batch size
is large.
2) In dmlproc, do not deserialize the whole insertpackage, which
consists of the complete record set per column, which would be
wasteful as we only need some metadata fields from insertpackage
here. This is only done for batch inserts at the moment, this
should also be applied to single inserts.
126 lines
3.8 KiB
C++
126 lines
3.8 KiB
C++
/* Copyright (C) 2014 InfiniDB, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; version 2 of
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the License.
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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 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 Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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/***********************************************************************
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* $Id: insertdmlpackage.h 9210 2013-01-21 14:10:42Z rdempsey $
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*
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*
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***********************************************************************/
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/** @file */
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#ifndef INSERTDMLPACKAGE_H
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#define INSERTDMLPACKAGE_H
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#include <string>
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#include "calpontdmlpackage.h"
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#include "bytestream.h"
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#if defined(_MSC_VER) && defined(xxxINSERTDMLPKG_DLLEXPORT)
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#define EXPORT __declspec(dllexport)
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#else
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#define EXPORT
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#endif
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namespace dmlpackage
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{
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/** @brief concrete implementation of a CalpontDMLPackage
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* Specifically for representing INSERT DML Statements
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*/
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class InsertDMLPackage : public CalpontDMLPackage
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{
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public:
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/** @brief ctor
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*/
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EXPORT InsertDMLPackage();
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/** @brief ctor
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*
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* @param schemaName the schema of the table being operated on
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* @param tableName the table name of the table being operated on
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* @param dmlStatement the dml statement
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* @param sessionID the session id
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*/
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EXPORT InsertDMLPackage(std::string schemaName, std::string tableName,
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std::string dmlStatement, int sessionID );
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/** @brief dtor
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*/
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EXPORT virtual ~InsertDMLPackage();
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/** @brief write a InsertDMLPackage to a ByteStream
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*
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* @param bytestream the ByteStream to write to
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*/
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EXPORT int write(messageqcpp::ByteStream& bytestream);
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/** @brief read InsertDMLPackage from bytestream
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*
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* @param bytestream the ByteStream to read from
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*/
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EXPORT int read(messageqcpp::ByteStream& bytestream);
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/** @brief read InsertDMLPackage metadata from bytestream
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*
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* @param bytestream the ByteStream to read from
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*/
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EXPORT void readMetaData(messageqcpp::ByteStream& bytestream);
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/** @brief read InsertDMLPackage row data from bytestream
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*
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* @param bytestream the ByteStream to read from
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*/
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EXPORT void readRowData(messageqcpp::ByteStream& bytestream);
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/** @brief build a InsertDMLPackage from a string buffer
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*
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* @param buffer
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* @param columns the number of columns in the buffer
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* @param rows the number of rows in the buffer
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*/
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EXPORT int buildFromBuffer(std::string& buffer, int columns, int rows);
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/** @brief build a InsertDMLPackage from MySQL buffer
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*
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* @param tableValuesMap the value list for each column in the table
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* @param colNameList the column name for each column
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* @param columns number of columns in the table
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* @param rows number of rows to be touched
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*/
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EXPORT int buildFromMysqlBuffer(ColNameList& colNameList, TableValuesMap& tableValuesMap, int columns, int rows, NullValuesBitset& nullValues);
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/** @brief build a InsertDMLPackage from a InsertSqlStatement
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*
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* @param sqlStmt the InsertSqlStatement
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*/
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EXPORT int buildFromSqlStatement(SqlStatement& sqlStatement);
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/** @brief Dump the InsertDMLPackage for debugging purposes
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*/
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EXPORT void Dump();
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protected:
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private:
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};
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}
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#undef EXPORT
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#endif //INSERTDMLPACKAGE_H
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