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utils/funcexp/functor_bool.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_bool.h 3495 2013-01-21 14:09:51Z rdempsey $
+
+/** @file */
+
+#ifndef FUNCTOR_BOOL_H
+#define FUNCTOR_BOOL_H
+
+
+#include "functor.h"
+
+
+namespace funcexp
+{
+
+/** @brief Func_Bool class
+  *    For function that returns a boolean result.
+  *        Must implement getBoolVal()
+  *        Implement any other methods that behave differently from the default.
+  */
+class Func_Bool : public Func
+{
+public:
+	Func_Bool() {}
+	Func_Bool(const std::string& funcName) : Func(funcName) {}
+	virtual ~Func_Bool() {}
+
+/*
+	virtual bool getBoolVal(rowgroup::Row& row,
+								FunctionParm& fp,
+								bool& isNull,
+								execplan::CalpontSystemCatalog::ColType& op_ct) = 0;
+*/
+
+	int64_t getIntVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct)
+	{ return (getBoolVal(row, fp, isNull, op_ct) ? 1 : 0); }
+
+	double getDoubleVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct)
+	{ return (getBoolVal(row, fp, isNull, op_ct) ? 1.0 : 0.0); }
+
+	std::string getStrVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct)
+	{ return (getBoolVal(row, fp, isNull, op_ct) ? "1" : "0"); }
+
+	execplan::IDB_Decimal getDecimalVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct)
+	{ return execplan::IDB_Decimal(getIntVal(row, fp, isNull, op_ct),0,0); }
+
+	int32_t getDateIntVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct)
+	{ isNull = true; return 0; }
+
+	int64_t getDatetimeIntVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct)
+	{ isNull = true; return 0; }
+};
+
+
+/** @brief Func_between class
+  */
+class Func_between : public Func_Bool
+{
+public:
+	Func_between() : Func_Bool("between") {}
+	virtual ~Func_between() {}
+
+	execplan::CalpontSystemCatalog::ColType operationType(FunctionParm& fp, execplan::CalpontSystemCatalog::ColType& resultType);
+
+	bool getBoolVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+};
+
+
+/** @brief Func_notbetween class
+  */
+class Func_notbetween : public Func_Bool
+{
+public:
+	Func_notbetween() : Func_Bool("notbetween") {}
+	virtual ~Func_notbetween() {}
+
+	execplan::CalpontSystemCatalog::ColType operationType(FunctionParm& fp, execplan::CalpontSystemCatalog::ColType& resultType);
+
+	bool getBoolVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+};
+
+
+/** @brief Func_in class
+  */
+class Func_in : public Func_Bool
+{
+public:
+	Func_in() : Func_Bool("in") {}
+	virtual ~Func_in() {}
+
+	execplan::CalpontSystemCatalog::ColType operationType(FunctionParm& fp, execplan::CalpontSystemCatalog::ColType& resultType);
+
+	bool getBoolVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+};
+
+
+/** @brief Func_notin class
+  */
+class Func_notin : public Func_Bool
+{
+public:
+	Func_notin() : Func_Bool("notin") {}
+	virtual ~Func_notin() {}
+
+	execplan::CalpontSystemCatalog::ColType operationType(FunctionParm& fp, execplan::CalpontSystemCatalog::ColType& resultType);
+
+	bool getBoolVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+};
+
+
+/** @brief Func_regexp class
+  */
+class Func_regexp : public Func_Bool
+{
+public:
+	Func_regexp() : Func_Bool("regexp") {}
+	virtual ~Func_regexp() {}
+
+	execplan::CalpontSystemCatalog::ColType operationType(FunctionParm& fp, execplan::CalpontSystemCatalog::ColType& resultType);
+
+	bool getBoolVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+};
+
+
+/** @brief Func_isnull class
+  */
+class Func_isnull : public Func_Bool
+{
+public:
+	/*
+	 * Constructor. Pass the function name to the base constructor.
+	 */
+	Func_isnull():fIsNotNull(false) {}
+	Func_isnull(bool isnotnull) : fIsNotNull(isnotnull) {}
+	/*
+	 * Destructor. IDB_add does not need to do anything here to clean up.
+	 */
+	virtual ~Func_isnull() {}
+
+	/**
+	 * Decide on the function's operation type
+	 */
+	execplan::CalpontSystemCatalog::ColType operationType(FunctionParm& fp, execplan::CalpontSystemCatalog::ColType& resultType);
+
+	bool getBoolVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct);
+
+private:
+	bool fIsNotNull;
+};
+
+
+}
+
+#endif