mariadb-columnstore-engine/utils/funcexp/func_sec_to_time.cpp

/* 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: func_sec_to_time.cpp 2477 2011-05-12 16:07:35Z chao $
*
*
****************************************************************************/

#include <cstdlib>
#include <string>
#include <sstream>
using namespace std;

#include "functor_str.h"
#include "functioncolumn.h"
#include "rowgroup.h"
#include "funchelpers.h"
#include "predicateoperator.h"
using namespace execplan;

#include "dataconvert.h"

#include "errorcodes.h"
#include "idberrorinfo.h"
#include "errorids.h"
using namespace logging;
namespace funcexp
{

CalpontSystemCatalog::ColType Func_sec_to_time::operationType(FunctionParm& fp, CalpontSystemCatalog::ColType& resultType)
{
    return resultType;
}

string Func_sec_to_time::getStrVal(rowgroup::Row& row,
                                   FunctionParm& parm,
                                   bool& isNull,
                                   CalpontSystemCatalog::ColType& ct)
{

    int64_t val = 0;
    CalpontSystemCatalog::ColType curCt = parm[0]->data()->resultType();

    switch (parm[0]->data()->resultType().colDataType)
    {
        case execplan::CalpontSystemCatalog::BIGINT:
        case execplan::CalpontSystemCatalog::INT:
        case execplan::CalpontSystemCatalog::MEDINT:
        case execplan::CalpontSystemCatalog::TINYINT:
        case execplan::CalpontSystemCatalog::SMALLINT:
        case execplan::CalpontSystemCatalog::UBIGINT:
        case execplan::CalpontSystemCatalog::UINT:
        case execplan::CalpontSystemCatalog::UMEDINT:
        case execplan::CalpontSystemCatalog::UTINYINT:
        case execplan::CalpontSystemCatalog::USMALLINT:
        {
            val = parm[0]->data()->getIntVal(row, isNull);
        }
        break;

        case execplan::CalpontSystemCatalog::DOUBLE:
        {
            const string& valStr = parm[0]->data()->getStrVal(row, isNull);
            val = parm[0]->data()->getIntVal(row, isNull);
            size_t x = valStr.find(".");

            if (x < string::npos)
            {
                string tmp = valStr.substr(x + 1, 1);
                char* ptr = &tmp[0];
                int i = atoi(ptr);

                if (i >= 5)
                {
                    if (val > 0)
                        val += 1;
                    else
                        val -= 1;
                }
            }
        }
        break;

        case execplan::CalpontSystemCatalog::FLOAT:
        {
            const string& valStr = parm[0]->data()->getStrVal(row, isNull);
            val = parm[0]->data()->getIntVal(row, isNull);
            size_t x = valStr.find(".");

            if (x < string::npos)
            {
                string tmp = valStr.substr(x + 1, 1);
                char* ptr = &tmp[0];
                int i = atoi(ptr);

                if (i >= 5)
                {
                    if (val > 0)
                        val += 1;
                    else
                        val -= 1;
                }
            }
        }
        break;

        case execplan::CalpontSystemCatalog::DECIMAL:
        {
            const string& valStr = parm[0]->data()->getStrVal(row, isNull);

            val = parm[0]->data()->getIntVal(row, isNull);
            size_t x = valStr.find(".");

            if (x < string::npos)
            {
                string tmp = valStr.substr(x + 1, 1);
                char* ptr = &tmp[0];
                int i = atoi(ptr);

                if (i >= 5)
                {
                    if (val > 0)
                        val += 1;
                    else
                        val -= 1;
                }
            }
        }
        break;

        case execplan::CalpontSystemCatalog::CHAR:
        case execplan::CalpontSystemCatalog::VARCHAR:
        case execplan::CalpontSystemCatalog::TEXT:
        {
            val = parm[0]->data()->getIntVal(row, isNull);

            break;
        }

        default:
        {
            std::ostringstream oss;
            oss << "sec_to_time: datatype of " << execplan::colDataTypeToString(parm[0]->data()->resultType().colDataType);
            throw logging::IDBExcept(oss.str(), ERR_DATATYPE_NOT_SUPPORT);
        }
    }

    int64_t posVal = llabs(val);

    if (val > 3020399)
        return ("838:59:59");

    if (val < -3020399)
        return ("-838:59:59");

    //Format the time
    uint32_t hour = 0;
    uint32_t minute = 0;
    uint32_t second = 0;

    hour = posVal / 3600;
    minute = (posVal - (hour * 3600)) / 60;
    second = posVal - (hour * 3600) - (minute * 60);

    const char* minus = "-";
    const char* nominus = "";

    const char* signstr = (val < 0) ? minus : nominus;

    char buf[32]; // actual string either 9 or 10 characters
    snprintf(buf, 32, "%s%02d:%02d:%02d", signstr, hour, minute, second);
    return buf;
}


int64_t Func_sec_to_time::getIntVal(rowgroup::Row& row,
                                    FunctionParm& parm,
                                    bool& isNull,
                                    CalpontSystemCatalog::ColType& op_ct)
{
    int64_t val = parm[0]->data()->getIntVal(row, isNull);

    if (val > 3020399)
        val = 8385959;
    else if (val < -3020399)
        val = 4286581337LL;
    else
    {
        string time = getStrVal(row, parm, isNull, op_ct);
        size_t x = time.find(":");

        while (x < string::npos)
        {
            time.erase(x, 1);
            x = time.find(":");
        }

        char* ep = NULL;
        const char* str = time.c_str();
        errno = 0;
        val = strtoll(str, &ep, 10);
    }

    return val;
}

double Func_sec_to_time::getDoubleVal(rowgroup::Row& row,
                                      FunctionParm& parm,
                                      bool& isNull,
                                      execplan::CalpontSystemCatalog::ColType& op_ct)
{

    double val = parm[0]->data()->getDoubleVal(row, isNull);

    if (val > 3020399)
        val = 8385959;
    else if (val < -3020399)
        val = 4286581337LL;
    else
    {
        string time = getStrVal(row, parm, isNull, op_ct);
        size_t x = time.find(":");

        while (x < string::npos)
        {
            time.erase(x, 1);
            x = time.find(":");
        }

        char* ep = NULL;
        const char* str = time.c_str();
        errno = 0;
        val = (double)strtoll(str, &ep, 10);
    }

    return val;
}

execplan::IDB_Decimal Func_sec_to_time::getDecimalVal(rowgroup::Row& row,
        FunctionParm& parm,
        bool& isNull,
        execplan::CalpontSystemCatalog::ColType& op_ct)
{
    IDB_Decimal d;
    int64_t val = parm[0]->data()->getIntVal(row, isNull);

    if (val > 3020399)
        d.value = 8385959;
    else if (val < -3020399)
        d.value = 4286581337LL;
    else
    {
        string time = getStrVal(row, parm, isNull, op_ct);
        size_t x = time.find(":");

        while (x < string::npos)
        {
            time.erase(x, 1);
            x = time.find(":");
        }

        char* ep = NULL;
        const char* str = time.c_str();
        errno = 0;
        d.value = strtoll(str, &ep, 10);
    }

    d.scale = 0;
    return d;
}




} // namespace funcexp
// vim:ts=4 sw=4: