the begginning

writeengine/shared/we_convertor.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_convertor.h 4726 2013-08-07 03:38:36Z bwilkinson $
+*
+*******************************************************************************/
+/** @file */
+
+#ifndef _WE_CONVERTOR_H_
+#define _WE_CONVERTOR_H_
+
+#include <time.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h> 
+#include <string>
+
+#include <iostream>
+#include <fstream>
+
+#include "we_obj.h"
+#include "we_config.h"
+#include "calpontsystemcatalog.h"
+#if defined(_MSC_VER) && defined(WRITEENGINE_DLLEXPORT)
+#define EXPORT __declspec(dllexport)
+#else
+#define EXPORT
+#endif
+
+/** Namespace WriteEngine */
+namespace WriteEngine
+{
+
+/** Class Convertor */
+class Convertor 
+{
+public:
+   /**
+    * @brief Default Constructor
+    */
+    Convertor(){}
+
+   /**
+    * @brief Destructor
+    */
+    ~Convertor(){}
+
+   /**
+    * @brief Get date/time string based on current date and time
+    */
+    EXPORT static const std::string   getTimeStr();
+
+   /**
+    * @brief Convert specified integer value to a string
+    *
+    * @param val Integer value to be converted to a string
+    */
+    EXPORT static const std::string   int2Str(int val);
+
+   /**
+    * @brief Convert an oid to a full file name (with partition and segment
+    *        being included in the filename).  This is used for all column and
+    *        dictionary store db files.  If dealing with a version buffer file,
+    *        a partition and segment number of 0 should be used.
+    */
+    EXPORT static int oid2FileName(FID fid, char* fullFileName,
+        char dbDirName[][MAX_DB_DIR_NAME_SIZE],
+        uint32_t partition, uint16_t segment);
+
+   /**
+    * @brief Convert specified errno to associated error msg string
+    *
+    * @param errNum System errno to be converted.
+    * @param errString Error msg string associated with the specified errno.
+    */
+    EXPORT static void mapErrnoToString(int errNum, std::string& errString);
+
+   /**
+    * @brief Convert specified ColDataType to internal storage type (ColType)
+    *
+    * @param dataType Interface data-type
+    * @param internalType Internal data-type used for storing
+    */
+    //BUG931
+    EXPORT static void convertColType(execplan::CalpontSystemCatalog::ColDataType dataType,
+        ColType& internalType, bool isToken=false);
+   /**
+    * @brief Convert specified internal storage type (ColType) to 
+    *        ColDataType
+    *
+    * @param internalType Internal data-type used for storing
+    * @param dataType Interface data-type
+    */
+    EXPORT static void convertWEColType(ColType internalType, 
+        execplan::CalpontSystemCatalog::ColDataType& dataType);
+
+   /**
+    * @brief Convert interface column type to a internal column type.
+    * curStruct is interpreted as a ColStruct.
+    */
+    EXPORT static void convertColType(ColStruct* curStruct);
+
+   /*
+    * @brief Get the correct width for a row
+    */
+    EXPORT static int getCorrectRowWidth( execplan::CalpontSystemCatalog::ColDataType dataType, int width );
+
+   /*
+    * @brief Convert a Decimal string to it's equivalent integer value.
+    *        errno can be checked upon return to see if input value was
+    *        out of range (ERANGE).
+    *
+    * field      decimal string to be converted
+    * fieldLengh length of "field" in bytes
+    * scale      decimal scale to be applied to value
+    */
+    EXPORT static long long convertDecimalString ( const char* field,
+        int         fieldLength,
+        int         scale );
+
+private:
+
+   struct dmFilePathArgs_t;
+   static int dmOid2FPath(uint32_t oid, uint32_t partition, uint32_t segment,
+       dmFilePathArgs_t* pArgs);
+
+};
+
+} //end of namespace
+
+#undef EXPORT
+
+#endif // _WE_CONVERTOR_H_