the begginning

utils/funcexp/functor_all.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: functor_all.h 3495 2013-01-21 14:09:51Z rdempsey $
+
+/** @file */
+
+#ifndef FUNCTOR_ALL_H
+#define FUNCTOR_ALL_H
+
+#include "functor.h"
+
+
+namespace funcexp
+{
+
+/** @brief Func_All class
+  *    For function that can retun all supported types.
+  *        Must implement getIntVal(), getDoubleVal(), and getStrVal()
+  *        Implement any other methods that behave differently from the default.
+  *    Note: implementation based on result type will be more efficient.
+  */
+class Func_All : public Func
+{
+public:
+	Func_All() {}
+	Func_All(const std::string& funcName) : Func(funcName) {}
+	virtual ~Func_All() {}
+
+/*
+	int64_t getIntVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct) = 0;
+
+	double getDoubleVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct) = 0;
+
+	std::string getStrVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct) = 0;
+*/
+};
+
+
+/** @brief Func_simple_case class
+  */
+class Func_simple_case : public Func_All
+{
+public:
+	Func_simple_case():Func_All("case_simple") {}
+	virtual ~Func_simple_case() {}
+
+	execplan::CalpontSystemCatalog::ColType operationType(FunctionParm& fp, execplan::CalpontSystemCatalog::ColType& resultType);
+
+	int64_t getIntVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	double getDoubleVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	std::string getStrVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	execplan::IDB_Decimal getDecimalVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	int32_t getDateIntVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	int64_t getDatetimeIntVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+};
+
+
+/** @brief Func_searched_case class
+  */
+class Func_searched_case : public Func_All
+{
+public:
+	Func_searched_case():Func_All("case_searched") {}
+	virtual ~Func_searched_case() {}
+
+	execplan::CalpontSystemCatalog::ColType operationType(FunctionParm& fp, execplan::CalpontSystemCatalog::ColType& resultType);
+
+	int64_t getIntVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	double getDoubleVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	std::string getStrVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	execplan::IDB_Decimal getDecimalVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	int32_t getDateIntVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	int64_t getDatetimeIntVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+};
+
+
+/** @brief Func_if class
+  */
+class Func_if : public Func_All
+{
+public:
+	Func_if() : Func_All("Func_if") {}
+	virtual ~Func_if() {}
+
+	execplan::CalpontSystemCatalog::ColType operationType(FunctionParm& fp, execplan::CalpontSystemCatalog::ColType& resultType);
+
+	int64_t getIntVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	double getDoubleVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	std::string getStrVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	execplan::IDB_Decimal getDecimalVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	int32_t getDateIntVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	int64_t getDatetimeIntVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+};
+
+
+/** @brief Func_ifnull class
+  */
+class Func_ifnull : public Func_All
+{
+public:
+	Func_ifnull() : Func_All("ifnull") {}
+	virtual ~Func_ifnull() {}
+
+	execplan::CalpontSystemCatalog::ColType operationType(FunctionParm& fp, execplan::CalpontSystemCatalog::ColType& resultType);
+
+	int64_t getIntVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	double getDoubleVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	std::string getStrVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	execplan::IDB_Decimal getDecimalVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	int32_t getDateIntVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	int64_t getDatetimeIntVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	bool getBoolVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+};
+
+
+/** @brief Func_greatest class
+  */
+class Func_greatest : public Func_All
+{
+public:
+	Func_greatest() : Func_All("greatest") {}
+	virtual ~Func_greatest() {}
+
+	execplan::CalpontSystemCatalog::ColType operationType(FunctionParm& fp, execplan::CalpontSystemCatalog::ColType& resultType);
+
+	int64_t getIntVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+    uint64_t getUintVal(rowgroup::Row& row,
+                        FunctionParm& fp,
+                        bool& isNull,
+                        execplan::CalpontSystemCatalog::ColType& op_ct);
+
+    double getDoubleVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	std::string getStrVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	execplan::IDB_Decimal getDecimalVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+};
+
+
+/** @brief Func_least class
+  */
+class Func_least : public Func_All
+{
+public:
+	Func_least() : Func_All("least") {}
+	virtual ~Func_least() {}
+
+	execplan::CalpontSystemCatalog::ColType operationType(FunctionParm& fp, execplan::CalpontSystemCatalog::ColType& resultType);
+
+	int64_t getIntVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	double getDoubleVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	std::string getStrVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	execplan::IDB_Decimal getDecimalVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+};
+
+
+/** @brief Func_coalesce class
+  */
+class Func_coalesce : public Func_All
+{
+public:
+	Func_coalesce() : Func_All("coalesce") {}
+	virtual ~Func_coalesce() {}
+
+	execplan::CalpontSystemCatalog::ColType operationType(FunctionParm& fp, execplan::CalpontSystemCatalog::ColType& resultType);
+
+	int64_t getIntVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	double getDoubleVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	std::string getStrVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	execplan::IDB_Decimal getDecimalVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	int32_t getDateIntVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	int64_t getDatetimeIntVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+};
+
+
+/** @brief Func_nullif class
+  */
+class Func_nullif : public Func_All
+{
+public:
+	Func_nullif() : Func_All("nullif") {}
+	virtual ~Func_nullif() {}
+
+	execplan::CalpontSystemCatalog::ColType operationType(FunctionParm& fp, execplan::CalpontSystemCatalog::ColType& resultType);
+
+	std::string getStrVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	int32_t getDateIntVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	int64_t getDatetimeIntVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	int64_t getIntVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+    uint64_t getUintVal(rowgroup::Row& row,
+                        FunctionParm& fp,
+                        bool& isNull,
+                        execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	double getDoubleVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+	execplan::IDB_Decimal getDecimalVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+};
+
+
+}
+
+#endif