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writeengine/wrapper/we_colopcompress.h

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+/* Copyright (C) 2014 InfiniDB, Inc.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License
+   as published by the Free Software Foundation; version 2 of
+   the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA. */
+
+//  $Id: we_colopcompress.h 4726 2013-08-07 03:38:36Z bwilkinson $
+
+
+/** @file */
+
+#ifndef _WE_COLOP_COMPRESS_H_
+#define _WE_COLOP_COMPRESS_H_
+
+#include <stdlib.h>
+
+#include "we_colop.h"
+#include "we_chunkmanager.h"
+
+#if defined(_MSC_VER) && defined(WRITEENGINE_DLLEXPORT)
+#define EXPORT __declspec(dllexport)
+#else
+#define EXPORT
+#endif
+
+/** Namespace WriteEngine */
+namespace WriteEngine
+{
+
+/** Class ColumnOpCompress0 */
+class ColumnOpCompress0 : public ColumnOp
+{
+public:
+   /**
+   * @brief Constructor
+   */
+   EXPORT ColumnOpCompress0();
+   EXPORT ColumnOpCompress0(Log* logger);
+
+   /**
+   * @brief Default Destructor
+   */
+   EXPORT virtual ~ColumnOpCompress0();
+
+   /**
+   * @brief virtual method in ColumnOp
+   */
+   IDBDataFile*  openFile(const Column& column, uint16_t dbRoot, uint32_t partition,
+      uint16_t segment, std::string& segFile, bool useTmpSuffix, const char* mode = "r+b",
+      int ioBuffSize = DEFAULT_BUFSIZ) const;
+
+   /**
+   * @brief virtual method in ColumnOp
+   */
+   bool abbreviatedExtent(IDBDataFile* pFile, int colWidth) const;
+
+   /**
+   * @brief virtual method in ColumnOp
+   */
+   int blocksInFile(IDBDataFile* pFile) const;
+
+
+protected:
+
+   /**
+   * @brief virtual method in ColumnOp
+   */
+   int readBlock(IDBDataFile* pFile, unsigned char* readBuf, const uint64_t fbo);
+
+   /**
+   * @brief virtual method in ColumnOp
+   */
+   int saveBlock(IDBDataFile* pFile, const unsigned char* writeBuf, const uint64_t fbo);
+
+
+private:
+};
+
+
+
+/** Class ColumnOpCompress1 */
+class ColumnOpCompress1 : public ColumnOp
+{
+public:
+   /**
+   * @brief Constructor
+   */
+   EXPORT ColumnOpCompress1(Log* logger=0);
+
+   /**
+   * @brief Default Destructor
+   */
+   EXPORT virtual ~ColumnOpCompress1();
+
+   /**
+   * @brief virtual method in FileOp
+   */
+   EXPORT int flushFile(int rc, std::map<FID,FID> & columnOids);
+
+   /**
+   * @brief virtual method in FileOp
+   */
+   int expandAbbrevColumnExtent(IDBDataFile* pFile, uint16_t dbRoot, uint64_t emptyVal, int width);
+
+   /**
+   * @brief virtual method in ColumnOp
+   */
+   IDBDataFile*  openFile(const Column& column, uint16_t dbRoot, uint32_t partition,
+      uint16_t segment, std::string& segFile, bool useTmpSuffix, const char* mode = "r+b",
+      int ioBuffSize = DEFAULT_BUFSIZ) const;
+
+   /**
+   * @brief virtual method in ColumnOp
+   */
+   bool abbreviatedExtent(IDBDataFile* pFile, int colWidth) const;
+
+   /**
+   * @brief virtual method in ColumnOp
+   */
+   int blocksInFile(IDBDataFile* pFile) const;
+
+//   void chunkManager(ChunkManager* cm);
+
+   /**
+   * @brief virtual method in FileOp
+   */
+   void setTransId(const TxnID& transId) {ColumnOp::setTransId(transId); if (m_chunkManager) m_chunkManager->setTransId(transId);}
+   
+   void setBulkFlag(bool isBulkLoad) {m_chunkManager->setBulkFlag(isBulkLoad);};
+   
+   void setFixFlag(bool isFix) {m_chunkManager->setFixFlag(isFix);};
+   
+protected:
+
+   /**
+   * @brief virtual method in FileOp
+   */
+   int updateColumnExtent(IDBDataFile* pFile, int nBlocks);
+
+   /**
+   * @brief virtual method in ColumnOp
+   */
+   void closeColumnFile(Column& column) const;
+
+   /**
+   * @brief virtual method in ColumnOp
+   */
+   int readBlock(IDBDataFile* pFile, unsigned char* readBuf, const uint64_t fbo);
+
+   /**
+   * @brief virtual method in ColumnOp
+   */
+   int saveBlock(IDBDataFile* pFile, const unsigned char* writeBuf, const uint64_t fbo);
+
+   /**
+   * @brief Set the IsInsert flag in the ChunkManager. 
+   * This forces flush at end of statement. Used only for bulk insert. 
+   */
+   void setIsInsert(bool isInsert) { m_chunkManager->setIsInsert(isInsert); }
+
+private:
+};
+
+
+} //end of namespace
+
+#undef EXPORT
+
+#endif // _WE_COLOP_COMPRESS_H_