the begginning

utils/funcexp/func_sec_to_time.cpp

@@ -0,0 +1,274 @@
+/* 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:
+		{
+			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: