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341 lines
12 KiB
C++
341 lines
12 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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// $Id: we_colop.h 4728 2013-08-08 19:26:10Z chao $
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/** @file */
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#ifndef _WE_COLOP_H_
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#define _WE_COLOP_H_
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#include <stdlib.h>
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#include "we_dbfileop.h"
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#include "brmtypes.h"
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#include "we_dbrootextenttracker.h"
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#include "we_tablemetadata.h"
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#include "../dictionary/we_dctnry.h"
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#if defined(_MSC_VER) && defined(WRITEENGINE_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 WriteEngine */
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namespace WriteEngine
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{
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class Log;
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//const int COL_DATATYPE_NUM = 15;
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//const char ColDataTypeStr[COL_DATATYPE_NUM][20] = { "bit", "tinyint", "char", "smallint", "decimal", "medint", "integer", "float", "date", "bigint",
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// "double", "datetime", "varchar", "clob", "blob" };
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/** Class ColumnOp */
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class ColumnOp : public DbFileOp
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{
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public:
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/**
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* @brief Constructor
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*/
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EXPORT ColumnOp();
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EXPORT ColumnOp(Log* logger);
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/**
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* @brief Default Destructor
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*/
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EXPORT virtual ~ColumnOp();
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EXPORT virtual int allocRowId(const TxnID& txnid,
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bool useStartingExtent,
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Column& column,
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uint64_t totalRow,
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RID* rowIdArray,
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HWM& hwm,
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bool& newExtent,
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uint64_t& rowsLeft,
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HWM& newHwm,
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bool& newFile,
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ColStructList& newColStructList,
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DctnryStructList& newDctnryStructList,
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std::vector<boost::shared_ptr<DBRootExtentTracker> > & dbRootExtentTrackers,
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bool insertSelect = false,
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bool isBatchInsert = false,
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OID tableOid = 0, bool isFirstBatchPm = false);
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/**
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* @brief Create column file(s)
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*/
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EXPORT virtual int createColumn(Column& column,
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int colNo,
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int colWidth,
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execplan::CalpontSystemCatalog::ColDataType colDataType,
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ColType colType,
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FID dataFid,
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uint16_t dbRoot,
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uint32_t partition);
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/**
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* @brief Fills up a column with null/default values in all non-empty rows as the reference column. The reference column
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* would typically be another column of the same table.
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*
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* @param column The new colum
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* @param refCol The reference column for identifying valid rows
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* @param defaultVal The default value of the new column
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* @param dictOid The dictionary store OID for a dictionary column
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* @param dictColWidth The dictionary string width for a dictionary column
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*/
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//BUG931
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EXPORT virtual int fillColumn(const TxnID& txnid,
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Column& column,
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Column& refCol,
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void* defaultVal,
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Dctnry* dctnry,
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ColumnOp* refColOp,
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const OID dictOid = 0,
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const int dictColWidth = 0,
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const std::string defaultValStr = "",
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bool autoincrement = false);
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/**
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* @brief Create a table file
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*/
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EXPORT virtual int createTable() const;
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/**
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* @brief Drop column file(s)
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*/
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EXPORT virtual int dropColumn(const FID dataFid);
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/**
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* @brief Drop column and dictionary file(s)
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*/
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EXPORT virtual int dropFiles(const std::vector<int32_t>& dataFids);
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/**
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* @brief Delete file(s) for the given partition
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*/
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EXPORT virtual int dropPartitions(const std::vector<OID>& dataFids,
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const std::vector<BRM::PartitionInfo>& partitions);
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EXPORT virtual int deleteOIDsFromExtentMap(const std::vector<int32_t>& dataFids);
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/**
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* @brief Drop a table file
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*/
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int dropTable() const { return NO_ERROR; }
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/**
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* @brief Expand the abbreviated extent to a full extent for this column.
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*/
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EXPORT virtual int expandAbbrevExtent(const Column& column);
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/**
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* @brief Add an extent to the specified column OID and DBRoot.
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* When this function returns, the file position will be located at the
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* end of the file. If the applicable column segment file does not exist,
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* extendColumn() will create the new segment file.
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* The extent must already exist in the extentmap prior to calling this fctn.
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*
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* @param column Column struct with input column attributes.
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* @param leaveFileOpen Leave the db file open when leaving this function
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* @param hwm The fbo of the column segment file where the new extent begins
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* @param startLbid The starting LBID for the new extent.
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* @param allocSize Number of blocks to be written for an extent
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* @param dbRoot The DBRoot of the file with the new extent.
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* @param partition Partition num of the file with the new extent.
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* @param segment The segment number of the file with the new extent.
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* @param segFile (out) Name of segment file to which the extent is added.
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* @param pFile (out) FILE ptr to the file where the extent is added.
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* @param newFile (out) Indicates if extent was added to new or existing file
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* @param hdrs (out) Contents of headers if file is compressed.
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* @return returns NO_ERROR if success.
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*/
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EXPORT int extendColumn(const Column& column,
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bool leaveFileOpen,
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HWM hwm,
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BRM::LBID_t startLbid,
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int allocSize,
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uint16_t dbRoot,
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uint32_t partition,
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uint16_t segment,
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std::string& segFile,
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IDBDataFile*& pFile,
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bool& newFile,
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char* hdrs = NULL);
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/**
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* @brief Add an extent to the OID specified in the column argument.
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* When this function returns, the file position will be located at the
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* end of the file.
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*
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* @param column Column struct with input column attributes.
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* @param dbRoot (in) The DBRoot of the file with the new extent.
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* @param partition (in) The partition num of the file with the new extent.
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* @param segment (in) The segment number of the file with the new extent.
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* @param segFile (out) Name of segment file to which the extent is added.
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* @param startLbid (out) The starting LBID for the new extent.
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* @param newFile (out) Indicates if extent was added to new or existing file
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* @param hdsr (out) Contents of headers if file is compressed.
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* @param allocSize (out) number of blocks to be written for an extent
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* @return returns NO_ERROR if success.
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*/
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EXPORT int addExtent(const Column& column,
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uint16_t dbRoot,
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uint32_t partition,
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uint16_t segment,
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std::string& segFile,
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BRM::LBID_t& startLbid,
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bool& newFile,
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int& allocSize,
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char* hdrs = NULL);
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/**
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* @brief Get columne data type
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*/
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EXPORT virtual bool getColDataType(const char* name, execplan::CalpontSystemCatalog::ColDataType& colDataType) const;
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/**
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* @brief Initialize the column
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*/
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EXPORT virtual void initColumn(Column& column) const;
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/**
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* @brief Check whether it is an empty row
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*/
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EXPORT virtual bool isEmptyRow(unsigned char* buf, int offset, const Column& column);
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/**
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* @brief Check whether it is a valid column
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*/
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EXPORT virtual bool isValid(Column& column) const;
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/**
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* @brief Open column file, segFile is set to the name of the column
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* segment file that is opened.
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*/
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EXPORT virtual int openColumnFile(Column& column,
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std::string& segFile,
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bool useTmpSuffix,
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int ioBuffSize=DEFAULT_BUFSIZ) const;
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/**
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* @brief Open table file
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*/
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int openTableFile() const { return NO_ERROR; }
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/**
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* @brief Delete a file
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*/
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EXPORT virtual void setColParam(Column& column, int colNo = 0,
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int colWidth = 0,
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execplan::CalpontSystemCatalog::ColDataType colDataType = execplan::CalpontSystemCatalog::INT,
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ColType colType = WR_INT,
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FID dataFid = 0,
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int comppre = 0,
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uint16_t dbRoot = 0,
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uint32_t partition = 0,
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uint16_t segment = 0) const;
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/**
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* @brief Write row(s)
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*/
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EXPORT virtual int writeRow(Column& curCol,
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uint64_t totalRow,
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const RID* rowIdArray,
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const void* valArray,
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bool bDelete = false);
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/**
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* @brief Write row(s) for update and delete @Bug 1886,2870
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*/
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EXPORT virtual int writeRows(Column& curCol,
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uint64_t totalRow,
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const RIDList& ridList,
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const void* valArray,
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const void* oldValArray=0,
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bool bDelete = false);
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/**
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* @brief Write row(s) for update and delete @Bug 1886,2870
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*/
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EXPORT virtual int writeRowsValues(Column& curCol,
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uint64_t totalRow,
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const RIDList& ridList,
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const void* valArray);
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/**
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* @brief Test if the pFile is an abbreviated extent.
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*/
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virtual bool abbreviatedExtent(IDBDataFile* pFile, int colWidth) const = 0;
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/**
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* @brief Caculate the number of blocks in file.
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*/
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virtual int blocksInFile(IDBDataFile* pFile) const = 0;
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/**
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* @brief Clear a column
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*/
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EXPORT void clearColumn(Column& column) const;
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/**
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* @brief open a data file of column
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*/
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virtual IDBDataFile* openFile(const Column& column, uint16_t dbRoot, uint32_t partition,
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uint16_t segment, std::string& segFile, bool useTmpSuffix, const char* mode = "r+b",
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int ioBuffSize = DEFAULT_BUFSIZ) const = 0;
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/**
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* @brief backup blocks to version buffer
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*/
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int writeVB(IDBDataFile* pSource, const OID sourceOid, IDBDataFile* pTarget, const OID targetOid,
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const std::vector<uint32_t>& fboList, const BRM::VBRange& freeList,
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size_t& nBlocksProcessed, const size_t fboCurrentOffset);
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/**
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* @brief restore blocks from version buffer
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*/
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int copyVB(IDBDataFile* pSource, const BRM::VER_t txnD, const OID oid, std::vector<uint32_t>& fboList,
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std::vector<BRM::LBIDRange>& rangeList);
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/**
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* @brief close column file
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*/
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EXPORT virtual void closeColumnFile(Column& column) const;
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protected:
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/**
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* @brief populate readBuf with data in block #lbid
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*/
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virtual int readBlock(IDBDataFile* pFile, unsigned char* readBuf, const uint64_t fbo) = 0;
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/**
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* @brief output writeBuf to pFile starting at position fbo
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*/
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virtual int saveBlock(IDBDataFile* pFile, const unsigned char* writeBuf, const uint64_t fbo) = 0;
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private:
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};
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} //end of namespace
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#undef EXPORT
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#endif // _WE_COLOP_H_
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