mirror of
https://github.com/pocoproject/poco.git
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3047 lines
50 KiB
C++
3047 lines
50 KiB
C++
//
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// VarHolder.h
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//
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// $Id: //poco/svn/Foundation/include/Poco/VarHolder.h#3 $
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//
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// Library: Foundation
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// Package: Dynamic
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// Module: VarHolder
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//
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// Definition of the VarHolder class.
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//
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// Copyright (c) 2007, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#ifndef Foundation_VarHolder_INCLUDED
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#define Foundation_VarHolder_INCLUDED
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#include "Poco/Foundation.h"
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#include "Poco/NumberFormatter.h"
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#include "Poco/NumberParser.h"
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#include "Poco/DateTime.h"
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#include "Poco/Timestamp.h"
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#include "Poco/LocalDateTime.h"
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#include "Poco/DateTimeFormat.h"
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#include "Poco/DateTimeFormatter.h"
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#include "Poco/DateTimeParser.h"
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#include "Poco/String.h"
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#include "Poco/Exception.h"
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#include <vector>
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#include <typeinfo>
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#undef min
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#undef max
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#include <limits>
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namespace Poco {
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namespace Dynamic {
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class Var;
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bool Foundation_API isJSONString(const Var& any);
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/// Returns true for values that should be JSON-formatted as string.
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void Foundation_API appendJSONString(std::string& val, const Var& any);
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/// Converts the any to a JSON value and adds it to val
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class Foundation_API VarHolder
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/// Interface for a data holder used by the Var class.
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/// Provides methods to convert between data types.
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/// Only data types for which VarHolder specialization exists are supported.
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///
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/// Provided are specializations for all C++ built-in types with addition of
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/// std::string, DateTime, LocalDateTime, Timestamp, std::vector<Var> and DynamicStruct.
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///
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/// Additional types can be supported by adding specializations. When implementing specializations,
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/// the only condition is that they reside in Poco namespace and implement the pure virtual functions
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/// clone() and type().
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///
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/// Those conversions that are not implemented shall fail back to this base
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/// class implementation. All the convert() function overloads in this class
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/// throw BadCastException.
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{
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public:
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virtual ~VarHolder();
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/// Destroys the VarHolder.
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virtual VarHolder* clone() const;
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/// Throws NotImplementedException. Implementation should
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/// deep-copy the VarHolder.
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virtual const std::type_info& type() const;
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/// Throws NotImplementedException. Implementation should
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/// return the type information for the stored content.
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virtual void convert(Int8& val) const;
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/// Throws BadCastException. Must be overriden in a type
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/// specialization in order to suport the conversion.
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virtual void convert(Int16& val) const;
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/// Throws BadCastException. Must be overriden in a type
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/// specialization in order to suport the conversion.
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virtual void convert(Int32& val) const;
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/// Throws BadCastException. Must be overriden in a type
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/// specialization in order to suport the conversion.
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virtual void convert(Int64& val) const;
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/// Throws BadCastException. Must be overriden in a type
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/// specialization in order to suport the conversion.
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virtual void convert(UInt8& val) const;
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/// Throws BadCastException. Must be overriden in a type
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/// specialization in order to suport the conversion.
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virtual void convert(UInt16& val) const;
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/// Throws BadCastException. Must be overriden in a type
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/// specialization in order to suport the conversion.
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virtual void convert(UInt32& val) const;
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/// Throws BadCastException. Must be overriden in a type
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/// specialization in order to suport the conversion.
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virtual void convert(UInt64& val) const;
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/// Throws BadCastException. Must be overriden in a type
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/// specialization in order to suport the conversion.
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virtual void convert(DateTime& val) const;
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/// Throws BadCastException. Must be overriden in a type
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/// specialization in order to suport the conversion.
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virtual void convert(LocalDateTime& val) const;
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/// Throws BadCastException. Must be overriden in a type
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/// specialization in order to suport the conversion.
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virtual void convert(Timestamp& val) const;
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/// Throws BadCastException. Must be overriden in a type
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/// specialization in order to suport the conversion.
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#ifndef POCO_LONG_IS_64_BIT
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void convert(long& val) const;
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/// Calls convert(Int32).
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void convert(unsigned long& val) const;
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/// Calls convert(UInt32).
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#endif
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virtual void convert(bool& val) const;
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/// Throws BadCastException. Must be overriden in a type
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/// specialization in order to suport the conversion.
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virtual void convert(float& val) const;
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/// Throws BadCastException. Must be overriden in a type
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/// specialization in order to suport the conversion.
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virtual void convert(double& val) const;
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/// Throws BadCastException. Must be overriden in a type
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/// specialization in order to suport the conversion.
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virtual void convert(char& val) const;
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/// Throws BadCastException. Must be overriden in a type
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/// specialization in order to suport the conversion.
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virtual void convert(std::string& val) const;
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/// Throws BadCastException. Must be overriden in a type
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/// specialization in order to suport the conversion.
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virtual bool isArray() const;
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/// Returns false. Must be properly overriden in a type
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/// specialization in order to suport the diagnostic.
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virtual bool isStruct() const;
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/// Returns false. Must be properly overriden in a type
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/// specialization in order to suport the diagnostic.
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virtual bool isInteger() const;
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/// Returns false. Must be properly overriden in a type
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/// specialization in order to suport the diagnostic.
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virtual bool isSigned() const;
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/// Returns false. Must be properly overriden in a type
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/// specialization in order to suport the diagnostic.
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virtual bool isNumeric() const;
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/// Returns false. Must be properly overriden in a type
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/// specialization in order to suport the diagnostic.
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virtual bool isString() const;
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/// Returns false. Must be properly overriden in a type
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/// specialization in order to suport the diagnostic.
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protected:
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VarHolder();
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/// Creates the VarHolder.
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template <typename F, typename T>
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void convertToSmaller(const F& from, T& to) const
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/// This function is meant to convert signed numeric values from
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/// larger to smaller type. It checks the upper and lower bound and
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/// if from value is within limits of type T (i.e. check calls do not throw),
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/// it is converted.
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{
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poco_static_assert (std::numeric_limits<F>::is_specialized);
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poco_static_assert (std::numeric_limits<T>::is_specialized);
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poco_static_assert (std::numeric_limits<F>::is_signed);
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poco_static_assert (std::numeric_limits<T>::is_signed);
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if (std::numeric_limits<F>::is_integer)
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{
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checkUpperLimit<F,T>(from);
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checkLowerLimit<F,T>(from);
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}
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else
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{
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checkUpperLimitFloat<F,T>(from);
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checkLowerLimitFloat<F,T>(from);
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}
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to = static_cast<T>(from);
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}
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template <typename F, typename T>
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void convertToSmallerUnsigned(const F& from, T& to) const
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/// This function is meant for converting unsigned integral data types,
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/// from larger to smaller type. Since lower limit is always 0 for unigned types,
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/// only the upper limit is checked, thus saving some cycles compared to the signed
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/// version of the function. If the value to be converted is smaller than
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/// the maximum value for the target type, the conversion is performed.
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{
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poco_static_assert (std::numeric_limits<F>::is_specialized);
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poco_static_assert (std::numeric_limits<T>::is_specialized);
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poco_static_assert (!std::numeric_limits<F>::is_signed);
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poco_static_assert (!std::numeric_limits<T>::is_signed);
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checkUpperLimit<F,T>(from);
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to = static_cast<T>(from);
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}
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template <typename F, typename T>
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void convertSignedToUnsigned(const F& from, T& to) const
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/// This function is meant for converting signed integral data types to
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/// unsigned data types. Negative values can not be converted and if one is
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/// encountered, RangeException is thrown.
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/// If upper limit is within the target data type limits, the conversion is performed.
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{
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poco_static_assert (std::numeric_limits<F>::is_specialized);
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poco_static_assert (std::numeric_limits<T>::is_specialized);
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poco_static_assert (std::numeric_limits<F>::is_signed);
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poco_static_assert (!std::numeric_limits<T>::is_signed);
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if (from < 0)
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throw RangeException("Value too small.");
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checkUpperLimit<F,T>(from);
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to = static_cast<T>(from);
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}
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template <typename F, typename T>
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void convertSignedFloatToUnsigned(const F& from, T& to) const
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/// This function is meant for converting floating point data types to
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/// unsigned integral data types. Negative values can not be converted and if one is
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/// encountered, RangeException is thrown.
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/// If uper limit is within the target data type limits, the conversion is performed.
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{
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poco_static_assert (std::numeric_limits<F>::is_specialized);
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poco_static_assert (std::numeric_limits<T>::is_specialized);
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poco_static_assert (!std::numeric_limits<F>::is_integer);
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poco_static_assert (std::numeric_limits<T>::is_integer);
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poco_static_assert (!std::numeric_limits<T>::is_signed);
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if (from < 0)
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throw RangeException("Value too small.");
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checkUpperLimitFloat<F,T>(from);
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to = static_cast<T>(from);
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}
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template <typename F, typename T>
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void convertUnsignedToSigned(const F& from, T& to) const
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/// This function is meant for converting unsigned integral data types to
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/// unsigned data types. Negative values can not be converted and if one is
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/// encountered, RangeException is thrown.
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/// If upper limit is within the target data type limits, the converiosn is performed.
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{
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poco_static_assert (std::numeric_limits<F>::is_specialized);
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poco_static_assert (std::numeric_limits<T>::is_specialized);
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poco_static_assert (!std::numeric_limits<F>::is_signed);
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poco_static_assert (std::numeric_limits<T>::is_signed);
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checkUpperLimit<F,T>(from);
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to = static_cast<T>(from);
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}
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private:
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template <typename F, typename T>
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void checkUpperLimit(const F& from) const
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{
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if ((sizeof(T) < sizeof(F)) &&
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(from > static_cast<F>(std::numeric_limits<T>::max())))
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{
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throw RangeException("Value too large.");
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}
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else
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if (static_cast<T>(from) > std::numeric_limits<T>::max())
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{
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throw RangeException("Value too large.");
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}
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}
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template <typename F, typename T>
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void checkUpperLimitFloat(const F& from) const
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{
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if (from > std::numeric_limits<T>::max())
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throw RangeException("Value too large.");
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}
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template <typename F, typename T>
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void checkLowerLimitFloat(const F& from) const
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{
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if (from < -std::numeric_limits<T>::max())
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throw RangeException("Value too small.");
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}
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template <typename F, typename T>
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void checkLowerLimit(const F& from) const
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{
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if (from < std::numeric_limits<T>::min())
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throw RangeException("Value too small.");
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}
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};
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//
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// inlines
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//
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inline VarHolder* VarHolder::clone() const
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{
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throw NotImplementedException("Not implemented: VarHolder::clone()");
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}
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inline const std::type_info& VarHolder::type() const
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{
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throw NotImplementedException("Not implemented: VarHolder::type()");
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}
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inline void VarHolder::convert(Int8& val) const
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{
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throw BadCastException("Can not convert to Int8");
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}
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inline void VarHolder::convert(Int16& val) const
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{
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throw BadCastException("Can not convert to Int16");
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}
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inline void VarHolder::convert(Int32& val) const
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{
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throw BadCastException("Can not convert to Int32");
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}
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inline void VarHolder::convert(Int64& val) const
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{
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throw BadCastException("Can not convert to Int64");
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}
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inline void VarHolder::convert(UInt8& val) const
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{
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throw BadCastException("Can not convert to UInt8");
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}
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inline void VarHolder::convert(UInt16& val) const
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{
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throw BadCastException("Can not convert to UInt16");
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}
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inline void VarHolder::convert(UInt32& val) const
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{
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throw BadCastException("Can not convert to UInt32");
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}
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inline void VarHolder::convert(UInt64& val) const
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{
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throw BadCastException("Can not convert to UInt64");
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}
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inline void VarHolder::convert(DateTime& val) const
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{
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throw BadCastException("Can not convert to DateTime");
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}
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inline void VarHolder::convert(LocalDateTime& val) const
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{
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throw BadCastException("Can not convert to LocalDateTime");
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}
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inline void VarHolder::convert(Timestamp& val) const
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{
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throw BadCastException("Can not convert to Timestamp");
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}
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#ifndef POCO_LONG_IS_64_BIT
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inline void VarHolder::convert(long& val) const
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{
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Int32 tmp;
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convert(tmp);
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val = tmp;
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}
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inline void VarHolder::convert(unsigned long& val) const
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{
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UInt32 tmp;
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convert(tmp);
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val = tmp;
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}
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#endif
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inline void VarHolder::convert(bool& val) const
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{
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throw BadCastException("Can not convert to bool");
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}
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inline void VarHolder::convert(float& val) const
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{
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throw BadCastException("Can not convert to float");
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}
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inline void VarHolder::convert(double& val) const
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{
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throw BadCastException("Can not convert to double");
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}
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inline void VarHolder::convert(char& val) const
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{
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throw BadCastException("Can not convert to char");
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}
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inline void VarHolder::convert(std::string& val) const
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{
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throw BadCastException("Can not convert to std::string");
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}
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inline bool VarHolder::isArray() const
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{
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return false;
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}
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inline bool VarHolder::isStruct() const
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{
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return false;
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}
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inline bool VarHolder::isInteger() const
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{
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return false;
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}
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inline bool VarHolder::isSigned() const
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{
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return false;
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}
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inline bool VarHolder::isNumeric() const
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{
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return false;
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}
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inline bool VarHolder::isString() const
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{
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return false;
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}
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template <typename T>
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class VarHolderImpl: public VarHolder
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/// Template based implementation of a VarHolder.
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/// This class provides type storage for user-defined types
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/// that do not have VarHolderImpl specialization.
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///
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/// The actual conversion work happens in the template specializations
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/// of this class.
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///
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/// VarHolderImpl throws following exceptions:
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/// BadCastException (if the requested conversion is not implemented)
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/// RangeException (if an attempt is made to assign a numeric value outside of the target min/max limits
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/// SyntaxException (if an attempt is made to convert a string containing non-numeric characters to number)
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///
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/// In order to support efficient direct extraction of the held value,
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/// all specializations must additionally implement a public member function:
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///
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/// const T& value() const
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///
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/// returning a const reference to the actual stored value.
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{
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public:
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VarHolderImpl(const T& val): _val(val)
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{
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}
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~VarHolderImpl()
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{
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}
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const std::type_info& type() const
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{
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return typeid(T);
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}
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VarHolder* clone() const
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{
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return new VarHolderImpl(_val);
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}
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const T& value() const
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{
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return _val;
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}
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private:
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VarHolderImpl();
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VarHolderImpl(const VarHolderImpl&);
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VarHolderImpl& operator = (const VarHolderImpl&);
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|
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T _val;
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};
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template <>
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class VarHolderImpl<Int8>: public VarHolder
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{
|
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public:
|
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VarHolderImpl(Int8 val): _val(val)
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{
|
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}
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~VarHolderImpl()
|
|
{
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}
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|
|
|
const std::type_info& type() const
|
|
{
|
|
return typeid(Int8);
|
|
}
|
|
|
|
void convert(Int8& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(Int16& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(Int32& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(Int64& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(UInt8& val) const
|
|
{
|
|
convertSignedToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt16& val) const
|
|
{
|
|
convertSignedToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt32& val) const
|
|
{
|
|
convertSignedToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt64& val) const
|
|
{
|
|
convertSignedToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(bool& val) const
|
|
{
|
|
val = (_val != 0);
|
|
}
|
|
|
|
void convert(float& val) const
|
|
{
|
|
val = static_cast<float>(_val);
|
|
}
|
|
|
|
void convert(double& val) const
|
|
{
|
|
val = static_cast<double>(_val);
|
|
}
|
|
|
|
void convert(char& val) const
|
|
{
|
|
val = static_cast<char>(_val);
|
|
}
|
|
|
|
void convert(std::string& val) const
|
|
{
|
|
val = NumberFormatter::format(_val);
|
|
}
|
|
|
|
VarHolder* clone() const
|
|
{
|
|
return new VarHolderImpl(_val);
|
|
}
|
|
|
|
const Int8& value() const
|
|
{
|
|
return _val;
|
|
}
|
|
|
|
bool isArray() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isStruct() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isInteger() const
|
|
{
|
|
return std::numeric_limits<Int8>::is_integer;
|
|
}
|
|
|
|
bool isSigned() const
|
|
{
|
|
return std::numeric_limits<Int8>::is_signed;
|
|
}
|
|
|
|
bool isNumeric() const
|
|
{
|
|
return std::numeric_limits<Int8>::is_specialized;
|
|
}
|
|
|
|
bool isString() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
private:
|
|
VarHolderImpl();
|
|
VarHolderImpl(const VarHolderImpl&);
|
|
VarHolderImpl& operator = (const VarHolderImpl&);
|
|
|
|
Int8 _val;
|
|
};
|
|
|
|
|
|
template <>
|
|
class VarHolderImpl<Int16>: public VarHolder
|
|
{
|
|
public:
|
|
VarHolderImpl(Int16 val): _val(val)
|
|
{
|
|
}
|
|
|
|
~VarHolderImpl()
|
|
{
|
|
}
|
|
|
|
const std::type_info& type() const
|
|
{
|
|
return typeid(Int16);
|
|
}
|
|
|
|
void convert(Int8& val) const
|
|
{
|
|
convertToSmaller(_val, val);
|
|
}
|
|
|
|
void convert(Int16& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(Int32& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(Int64& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(UInt8& val) const
|
|
{
|
|
convertSignedToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt16& val) const
|
|
{
|
|
convertSignedToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt32& val) const
|
|
{
|
|
convertSignedToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt64& val) const
|
|
{
|
|
convertSignedToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(bool& val) const
|
|
{
|
|
val = (_val != 0);
|
|
}
|
|
|
|
void convert(float& val) const
|
|
{
|
|
val = static_cast<float>(_val);
|
|
}
|
|
|
|
void convert(double& val) const
|
|
{
|
|
val = static_cast<double>(_val);
|
|
}
|
|
|
|
void convert(char& val) const
|
|
{
|
|
UInt8 tmp;
|
|
convert(tmp);
|
|
val = static_cast<char>(tmp);
|
|
}
|
|
|
|
void convert(std::string& val) const
|
|
{
|
|
val = NumberFormatter::format(_val);
|
|
}
|
|
|
|
VarHolder* clone() const
|
|
{
|
|
return new VarHolderImpl(_val);
|
|
}
|
|
|
|
const Int16& value() const
|
|
{
|
|
return _val;
|
|
}
|
|
|
|
bool isArray() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isStruct() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isInteger() const
|
|
{
|
|
return std::numeric_limits<Int16>::is_integer;
|
|
}
|
|
|
|
bool isSigned() const
|
|
{
|
|
return std::numeric_limits<Int16>::is_signed;
|
|
}
|
|
|
|
bool isNumeric() const
|
|
{
|
|
return std::numeric_limits<Int16>::is_specialized;
|
|
}
|
|
|
|
bool isString() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
private:
|
|
VarHolderImpl();
|
|
VarHolderImpl(const VarHolderImpl&);
|
|
VarHolderImpl& operator = (const VarHolderImpl&);
|
|
|
|
Int16 _val;
|
|
};
|
|
|
|
|
|
template <>
|
|
class VarHolderImpl<Int32>: public VarHolder
|
|
{
|
|
public:
|
|
VarHolderImpl(Int32 val): _val(val)
|
|
{
|
|
}
|
|
|
|
~VarHolderImpl()
|
|
{
|
|
}
|
|
|
|
const std::type_info& type() const
|
|
{
|
|
return typeid(Int32);
|
|
}
|
|
|
|
void convert(Int8& val) const
|
|
{
|
|
convertToSmaller(_val, val);
|
|
}
|
|
|
|
void convert(Int16& val) const
|
|
{
|
|
convertToSmaller(_val, val);
|
|
}
|
|
|
|
void convert(Int32& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(Int64& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(UInt8& val) const
|
|
{
|
|
convertSignedToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt16& val) const
|
|
{
|
|
convertSignedToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt32& val) const
|
|
{
|
|
convertSignedToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt64& val) const
|
|
{
|
|
convertSignedToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(bool& val) const
|
|
{
|
|
val = (_val != 0);
|
|
}
|
|
|
|
void convert(float& val) const
|
|
{
|
|
val = static_cast<float>(_val);
|
|
}
|
|
|
|
void convert(double& val) const
|
|
{
|
|
val = static_cast<double>(_val);
|
|
}
|
|
|
|
void convert(char& val) const
|
|
{
|
|
UInt8 tmp;
|
|
convert(tmp);
|
|
val = static_cast<char>(tmp);
|
|
}
|
|
|
|
void convert(std::string& val) const
|
|
{
|
|
val = NumberFormatter::format(_val);
|
|
}
|
|
|
|
VarHolder* clone() const
|
|
{
|
|
return new VarHolderImpl(_val);
|
|
}
|
|
|
|
const Int32& value() const
|
|
{
|
|
return _val;
|
|
}
|
|
|
|
bool isArray() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isStruct() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isInteger() const
|
|
{
|
|
return std::numeric_limits<Int32>::is_integer;
|
|
}
|
|
|
|
bool isSigned() const
|
|
{
|
|
return std::numeric_limits<Int32>::is_signed;
|
|
}
|
|
|
|
bool isNumeric() const
|
|
{
|
|
return std::numeric_limits<Int32>::is_specialized;
|
|
}
|
|
|
|
bool isString() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
private:
|
|
VarHolderImpl();
|
|
VarHolderImpl(const VarHolderImpl&);
|
|
VarHolderImpl& operator = (const VarHolderImpl&);
|
|
|
|
Int32 _val;
|
|
};
|
|
|
|
|
|
template <>
|
|
class VarHolderImpl<Int64>: public VarHolder
|
|
{
|
|
public:
|
|
VarHolderImpl(Int64 val): _val(val)
|
|
{
|
|
}
|
|
|
|
~VarHolderImpl()
|
|
{
|
|
}
|
|
|
|
const std::type_info& type() const
|
|
{
|
|
return typeid(Int64);
|
|
}
|
|
|
|
void convert(Int8& val) const
|
|
{
|
|
convertToSmaller(_val, val);
|
|
}
|
|
|
|
void convert(Int16& val) const
|
|
{
|
|
convertToSmaller(_val, val);
|
|
}
|
|
|
|
void convert(Int32& val) const
|
|
{
|
|
convertToSmaller(_val, val);
|
|
}
|
|
|
|
void convert(Int64& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(UInt8& val) const
|
|
{
|
|
convertSignedToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt16& val) const
|
|
{
|
|
convertSignedToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt32& val) const
|
|
{
|
|
convertSignedToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt64& val) const
|
|
{
|
|
convertSignedToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(bool& val) const
|
|
{
|
|
val = (_val != 0);
|
|
}
|
|
|
|
void convert(float& val) const
|
|
{
|
|
val = static_cast<float>(_val);
|
|
}
|
|
|
|
void convert(double& val) const
|
|
{
|
|
val = static_cast<double>(_val);
|
|
}
|
|
|
|
void convert(char& val) const
|
|
{
|
|
UInt8 tmp;
|
|
convert(tmp);
|
|
val = static_cast<char>(tmp);
|
|
}
|
|
|
|
void convert(std::string& val) const
|
|
{
|
|
val = NumberFormatter::format(_val);
|
|
}
|
|
|
|
void convert(DateTime& dt) const
|
|
{
|
|
dt = Timestamp(_val);
|
|
}
|
|
|
|
void convert(LocalDateTime& ldt) const
|
|
{
|
|
ldt = Timestamp(_val);
|
|
}
|
|
|
|
void convert(Timestamp& val) const
|
|
{
|
|
val = Timestamp(_val);
|
|
}
|
|
|
|
VarHolder* clone() const
|
|
{
|
|
return new VarHolderImpl(_val);
|
|
}
|
|
|
|
const Int64& value() const
|
|
{
|
|
return _val;
|
|
}
|
|
|
|
bool isArray() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isStruct() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isInteger() const
|
|
{
|
|
return std::numeric_limits<Int64>::is_integer;
|
|
}
|
|
|
|
bool isSigned() const
|
|
{
|
|
return std::numeric_limits<Int64>::is_signed;
|
|
}
|
|
|
|
bool isNumeric() const
|
|
{
|
|
return std::numeric_limits<Int64>::is_specialized;
|
|
}
|
|
|
|
bool isString() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
private:
|
|
VarHolderImpl();
|
|
VarHolderImpl(const VarHolderImpl&);
|
|
VarHolderImpl& operator = (const VarHolderImpl&);
|
|
|
|
Int64 _val;
|
|
};
|
|
|
|
|
|
template <>
|
|
class VarHolderImpl<UInt8>: public VarHolder
|
|
{
|
|
public:
|
|
VarHolderImpl(UInt8 val): _val(val)
|
|
{
|
|
}
|
|
|
|
~VarHolderImpl()
|
|
{
|
|
}
|
|
|
|
const std::type_info& type() const
|
|
{
|
|
return typeid(UInt8);
|
|
}
|
|
|
|
void convert(Int8& val) const
|
|
{
|
|
convertUnsignedToSigned(_val, val);
|
|
}
|
|
|
|
void convert(Int16& val) const
|
|
{
|
|
convertUnsignedToSigned(_val, val);
|
|
}
|
|
|
|
void convert(Int32& val) const
|
|
{
|
|
val = static_cast<Int32>(_val);
|
|
}
|
|
|
|
void convert(Int64& val) const
|
|
{
|
|
val = static_cast<Int64>(_val);
|
|
}
|
|
|
|
void convert(UInt8& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(UInt16& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(UInt32& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(UInt64& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(bool& val) const
|
|
{
|
|
val = (_val != 0);
|
|
}
|
|
|
|
void convert(float& val) const
|
|
{
|
|
val = static_cast<float>(_val);
|
|
}
|
|
|
|
void convert(double& val) const
|
|
{
|
|
val = static_cast<double>(_val);
|
|
}
|
|
|
|
void convert(char& val) const
|
|
{
|
|
UInt8 tmp;
|
|
convert(tmp);
|
|
val = static_cast<char>(tmp);
|
|
}
|
|
|
|
void convert(std::string& val) const
|
|
{
|
|
val = NumberFormatter::format(_val);
|
|
}
|
|
|
|
VarHolder* clone() const
|
|
{
|
|
return new VarHolderImpl(_val);
|
|
}
|
|
|
|
const UInt8& value() const
|
|
{
|
|
return _val;
|
|
}
|
|
|
|
bool isArray() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isStruct() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isInteger() const
|
|
{
|
|
return std::numeric_limits<UInt8>::is_integer;
|
|
}
|
|
|
|
bool isSigned() const
|
|
{
|
|
return std::numeric_limits<UInt8>::is_signed;
|
|
}
|
|
|
|
bool isNumeric() const
|
|
{
|
|
return std::numeric_limits<UInt8>::is_specialized;
|
|
}
|
|
|
|
bool isString() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
private:
|
|
VarHolderImpl();
|
|
VarHolderImpl(const VarHolderImpl&);
|
|
VarHolderImpl& operator = (const VarHolderImpl&);
|
|
|
|
UInt8 _val;
|
|
};
|
|
|
|
|
|
template <>
|
|
class VarHolderImpl<UInt16>: public VarHolder
|
|
{
|
|
public:
|
|
VarHolderImpl(UInt16 val): _val(val)
|
|
{
|
|
}
|
|
|
|
~VarHolderImpl()
|
|
{
|
|
}
|
|
|
|
const std::type_info& type() const
|
|
{
|
|
return typeid(UInt16);
|
|
}
|
|
|
|
void convert(Int8& val) const
|
|
{
|
|
convertUnsignedToSigned(_val, val);
|
|
}
|
|
|
|
void convert(Int16& val) const
|
|
{
|
|
convertUnsignedToSigned(_val, val);
|
|
}
|
|
|
|
void convert(Int32& val) const
|
|
{
|
|
convertUnsignedToSigned(_val, val);
|
|
}
|
|
|
|
void convert(Int64& val) const
|
|
{
|
|
val = static_cast<Int64>(_val);
|
|
}
|
|
|
|
void convert(UInt8& val) const
|
|
{
|
|
convertToSmallerUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt16& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(UInt32& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(UInt64& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(bool& val) const
|
|
{
|
|
val = (_val != 0);
|
|
}
|
|
|
|
void convert(float& val) const
|
|
{
|
|
val = static_cast<float>(_val);
|
|
}
|
|
|
|
void convert(double& val) const
|
|
{
|
|
val = static_cast<double>(_val);
|
|
}
|
|
|
|
void convert(char& val) const
|
|
{
|
|
UInt8 tmp;
|
|
convert(tmp);
|
|
val = static_cast<char>(tmp);
|
|
}
|
|
|
|
void convert(std::string& val) const
|
|
{
|
|
val = NumberFormatter::format(_val);
|
|
}
|
|
|
|
VarHolder* clone() const
|
|
{
|
|
return new VarHolderImpl(_val);
|
|
}
|
|
|
|
const UInt16& value() const
|
|
{
|
|
return _val;
|
|
}
|
|
|
|
bool isArray() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isStruct() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isInteger() const
|
|
{
|
|
return std::numeric_limits<UInt16>::is_integer;
|
|
}
|
|
|
|
bool isSigned() const
|
|
{
|
|
return std::numeric_limits<UInt16>::is_signed;
|
|
}
|
|
|
|
bool isNumeric() const
|
|
{
|
|
return std::numeric_limits<UInt16>::is_specialized;
|
|
}
|
|
|
|
bool isString() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
private:
|
|
VarHolderImpl();
|
|
VarHolderImpl(const VarHolderImpl&);
|
|
VarHolderImpl& operator = (const VarHolderImpl&);
|
|
|
|
UInt16 _val;
|
|
};
|
|
|
|
|
|
template <>
|
|
class VarHolderImpl<UInt32>: public VarHolder
|
|
{
|
|
public:
|
|
VarHolderImpl(UInt32 val): _val(val)
|
|
{
|
|
}
|
|
|
|
~VarHolderImpl()
|
|
{
|
|
}
|
|
|
|
const std::type_info& type() const
|
|
{
|
|
return typeid(UInt32);
|
|
}
|
|
|
|
void convert(Int8& val) const
|
|
{
|
|
convertUnsignedToSigned(_val, val);
|
|
}
|
|
|
|
void convert(Int16& val) const
|
|
{
|
|
convertUnsignedToSigned(_val, val);
|
|
}
|
|
|
|
void convert(Int32& val) const
|
|
{
|
|
convertUnsignedToSigned(_val, val);
|
|
}
|
|
|
|
void convert(Int64& val) const
|
|
{
|
|
convertUnsignedToSigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt8& val) const
|
|
{
|
|
convertToSmallerUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt16& val) const
|
|
{
|
|
convertToSmallerUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt32& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(UInt64& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(bool& val) const
|
|
{
|
|
val = (_val != 0);
|
|
}
|
|
|
|
void convert(float& val) const
|
|
{
|
|
val = static_cast<float>(_val);
|
|
}
|
|
|
|
void convert(double& val) const
|
|
{
|
|
val = static_cast<double>(_val);
|
|
}
|
|
|
|
void convert(char& val) const
|
|
{
|
|
UInt8 tmp;
|
|
convert(tmp);
|
|
val = static_cast<char>(tmp);
|
|
}
|
|
|
|
void convert(std::string& val) const
|
|
{
|
|
val = NumberFormatter::format(_val);
|
|
}
|
|
|
|
VarHolder* clone() const
|
|
{
|
|
return new VarHolderImpl(_val);
|
|
}
|
|
|
|
const UInt32& value() const
|
|
{
|
|
return _val;
|
|
}
|
|
|
|
bool isArray() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isStruct() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isInteger() const
|
|
{
|
|
return std::numeric_limits<UInt32>::is_integer;
|
|
}
|
|
|
|
bool isSigned() const
|
|
{
|
|
return std::numeric_limits<UInt32>::is_signed;
|
|
}
|
|
|
|
bool isNumeric() const
|
|
{
|
|
return std::numeric_limits<UInt32>::is_specialized;
|
|
}
|
|
|
|
bool isString() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
private:
|
|
VarHolderImpl();
|
|
VarHolderImpl(const VarHolderImpl&);
|
|
VarHolderImpl& operator = (const VarHolderImpl&);
|
|
|
|
UInt32 _val;
|
|
};
|
|
|
|
|
|
template <>
|
|
class VarHolderImpl<UInt64>: public VarHolder
|
|
{
|
|
public:
|
|
VarHolderImpl(UInt64 val): _val(val)
|
|
{
|
|
}
|
|
|
|
~VarHolderImpl()
|
|
{
|
|
}
|
|
|
|
const std::type_info& type() const
|
|
{
|
|
return typeid(UInt64);
|
|
}
|
|
|
|
void convert(Int8& val) const
|
|
{
|
|
convertUnsignedToSigned(_val, val);
|
|
}
|
|
|
|
void convert(Int16& val) const
|
|
{
|
|
convertUnsignedToSigned(_val, val);
|
|
}
|
|
|
|
void convert(Int32& val) const
|
|
{
|
|
convertUnsignedToSigned(_val, val);
|
|
}
|
|
|
|
void convert(Int64& val) const
|
|
{
|
|
convertUnsignedToSigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt8& val) const
|
|
{
|
|
convertToSmallerUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt16& val) const
|
|
{
|
|
convertToSmallerUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt32& val) const
|
|
{
|
|
convertToSmallerUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt64& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(bool& val) const
|
|
{
|
|
val = (_val != 0);
|
|
}
|
|
|
|
void convert(float& val) const
|
|
{
|
|
val = static_cast<float>(_val);
|
|
}
|
|
|
|
void convert(double& val) const
|
|
{
|
|
val = static_cast<double>(_val);
|
|
}
|
|
|
|
void convert(char& val) const
|
|
{
|
|
UInt8 tmp;
|
|
convert(tmp);
|
|
val = static_cast<char>(tmp);
|
|
}
|
|
|
|
void convert(std::string& val) const
|
|
{
|
|
val = NumberFormatter::format(_val);
|
|
}
|
|
|
|
void convert(DateTime& dt) const
|
|
{
|
|
Int64 val;
|
|
convertUnsignedToSigned(_val, val);
|
|
dt = Timestamp(val);
|
|
}
|
|
|
|
void convert(LocalDateTime& ldt) const
|
|
{
|
|
Int64 val;
|
|
convertUnsignedToSigned(_val, val);
|
|
ldt = Timestamp(val);
|
|
}
|
|
|
|
void convert(Timestamp& val) const
|
|
{
|
|
Int64 tmp;
|
|
convertUnsignedToSigned(_val, tmp);
|
|
val = Timestamp(tmp);
|
|
}
|
|
|
|
VarHolder* clone() const
|
|
{
|
|
return new VarHolderImpl(_val);
|
|
}
|
|
|
|
const UInt64& value() const
|
|
{
|
|
return _val;
|
|
}
|
|
|
|
bool isArray() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isStruct() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isInteger() const
|
|
{
|
|
return std::numeric_limits<UInt64>::is_integer;
|
|
}
|
|
|
|
bool isSigned() const
|
|
{
|
|
return std::numeric_limits<UInt64>::is_signed;
|
|
}
|
|
|
|
bool isNumeric() const
|
|
{
|
|
return std::numeric_limits<UInt64>::is_specialized;
|
|
}
|
|
|
|
bool isString() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
private:
|
|
VarHolderImpl();
|
|
VarHolderImpl(const VarHolderImpl&);
|
|
VarHolderImpl& operator = (const VarHolderImpl&);
|
|
|
|
UInt64 _val;
|
|
};
|
|
|
|
|
|
template <>
|
|
class VarHolderImpl<bool>: public VarHolder
|
|
{
|
|
public:
|
|
VarHolderImpl(bool val): _val(val)
|
|
{
|
|
}
|
|
|
|
~VarHolderImpl()
|
|
{
|
|
}
|
|
|
|
const std::type_info& type() const
|
|
{
|
|
return typeid(bool);
|
|
}
|
|
|
|
void convert(Int8& val) const
|
|
{
|
|
val = static_cast<Int8>(_val ? 1 : 0);
|
|
}
|
|
|
|
void convert(Int16& val) const
|
|
{
|
|
val = static_cast<Int16>(_val ? 1 : 0);
|
|
}
|
|
|
|
void convert(Int32& val) const
|
|
{
|
|
val = static_cast<Int32>(_val ? 1 : 0);
|
|
}
|
|
|
|
void convert(Int64& val) const
|
|
{
|
|
val = static_cast<Int64>(_val ? 1 : 0);
|
|
}
|
|
|
|
void convert(UInt8& val) const
|
|
{
|
|
val = static_cast<UInt8>(_val ? 1 : 0);
|
|
}
|
|
|
|
void convert(UInt16& val) const
|
|
{
|
|
val = static_cast<UInt16>(_val ? 1 : 0);
|
|
}
|
|
|
|
void convert(UInt32& val) const
|
|
{
|
|
val = static_cast<UInt32>(_val ? 1 : 0);
|
|
}
|
|
|
|
void convert(UInt64& val) const
|
|
{
|
|
val = static_cast<UInt64>(_val ? 1 : 0);
|
|
}
|
|
|
|
void convert(bool& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(float& val) const
|
|
{
|
|
val = (_val ? 1.0f : 0.0f);
|
|
}
|
|
|
|
void convert(double& val) const
|
|
{
|
|
val = (_val ? 1.0 : 0.0);
|
|
}
|
|
|
|
void convert(char& val) const
|
|
{
|
|
val = static_cast<char>(_val ? 1 : 0);
|
|
}
|
|
|
|
void convert(std::string& val) const
|
|
{
|
|
val = (_val ? "true" : "false");
|
|
}
|
|
|
|
VarHolder* clone() const
|
|
{
|
|
return new VarHolderImpl(_val);
|
|
}
|
|
|
|
const bool& value() const
|
|
{
|
|
return _val;
|
|
}
|
|
|
|
bool isArray() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isStruct() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isInteger() const
|
|
{
|
|
return std::numeric_limits<bool>::is_integer;
|
|
}
|
|
|
|
bool isSigned() const
|
|
{
|
|
return std::numeric_limits<bool>::is_signed;
|
|
}
|
|
|
|
bool isNumeric() const
|
|
{
|
|
return std::numeric_limits<bool>::is_specialized;
|
|
}
|
|
|
|
bool isString() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
private:
|
|
VarHolderImpl();
|
|
VarHolderImpl(const VarHolderImpl&);
|
|
VarHolderImpl& operator = (const VarHolderImpl&);
|
|
|
|
bool _val;
|
|
};
|
|
|
|
|
|
template <>
|
|
class VarHolderImpl<float>: public VarHolder
|
|
{
|
|
public:
|
|
VarHolderImpl(float val): _val(val)
|
|
{
|
|
}
|
|
|
|
~VarHolderImpl()
|
|
{
|
|
}
|
|
|
|
const std::type_info& type() const
|
|
{
|
|
return typeid(float);
|
|
}
|
|
|
|
void convert(Int8& val) const
|
|
{
|
|
convertToSmaller(_val, val);
|
|
}
|
|
|
|
void convert(Int16& val) const
|
|
{
|
|
convertToSmaller(_val, val);
|
|
}
|
|
|
|
void convert(Int32& val) const
|
|
{
|
|
convertToSmaller(_val, val);
|
|
}
|
|
|
|
void convert(Int64& val) const
|
|
{
|
|
convertToSmaller(_val, val);
|
|
}
|
|
|
|
void convert(UInt8& val) const
|
|
{
|
|
convertSignedFloatToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt16& val) const
|
|
{
|
|
convertSignedFloatToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt32& val) const
|
|
{
|
|
convertSignedFloatToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt64& val) const
|
|
{
|
|
convertSignedFloatToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(bool& val) const
|
|
{
|
|
val = !(_val <= std::numeric_limits<float>::min() &&
|
|
_val >= -1 * std::numeric_limits<float>::min());
|
|
}
|
|
|
|
void convert(float& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(double& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(char& val) const
|
|
{
|
|
UInt8 tmp;
|
|
convert(tmp);
|
|
val = static_cast<char>(tmp);
|
|
}
|
|
|
|
void convert(std::string& val) const
|
|
{
|
|
val = NumberFormatter::format(_val);
|
|
}
|
|
|
|
VarHolder* clone() const
|
|
{
|
|
return new VarHolderImpl(_val);
|
|
}
|
|
|
|
const float& value() const
|
|
{
|
|
return _val;
|
|
}
|
|
|
|
bool isArray() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isStruct() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isInteger() const
|
|
{
|
|
return std::numeric_limits<float>::is_integer;
|
|
}
|
|
|
|
bool isSigned() const
|
|
{
|
|
return std::numeric_limits<float>::is_signed;
|
|
}
|
|
|
|
bool isNumeric() const
|
|
{
|
|
return std::numeric_limits<float>::is_specialized;
|
|
}
|
|
|
|
bool isString() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
private:
|
|
VarHolderImpl();
|
|
VarHolderImpl(const VarHolderImpl&);
|
|
VarHolderImpl& operator = (const VarHolderImpl&);
|
|
|
|
float _val;
|
|
};
|
|
|
|
|
|
template <>
|
|
class VarHolderImpl<double>: public VarHolder
|
|
{
|
|
public:
|
|
VarHolderImpl(double val): _val(val)
|
|
{
|
|
}
|
|
|
|
~VarHolderImpl()
|
|
{
|
|
}
|
|
|
|
const std::type_info& type() const
|
|
{
|
|
return typeid(double);
|
|
}
|
|
|
|
void convert(Int8& val) const
|
|
{
|
|
convertToSmaller(_val, val);
|
|
}
|
|
|
|
void convert(Int16& val) const
|
|
{
|
|
convertToSmaller(_val, val);
|
|
}
|
|
|
|
void convert(Int32& val) const
|
|
{
|
|
convertToSmaller(_val, val);
|
|
}
|
|
|
|
void convert(Int64& val) const
|
|
{
|
|
convertToSmaller(_val, val);
|
|
}
|
|
|
|
void convert(UInt8& val) const
|
|
{
|
|
convertSignedFloatToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt16& val) const
|
|
{
|
|
convertSignedFloatToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt32& val) const
|
|
{
|
|
convertSignedFloatToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt64& val) const
|
|
{
|
|
convertSignedFloatToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(bool& val) const
|
|
{
|
|
val = !(_val <= std::numeric_limits<double>::min() &&
|
|
_val >= -1 * std::numeric_limits<double>::min());
|
|
}
|
|
|
|
void convert(float& val) const
|
|
{
|
|
double fMin = -1 * std::numeric_limits<float>::max();
|
|
double fMax = std::numeric_limits<float>::max();
|
|
|
|
if (_val < fMin) throw RangeException("Value too small.");
|
|
if (_val > fMax) throw RangeException("Value too large.");
|
|
|
|
val = static_cast<float>(_val);
|
|
}
|
|
|
|
void convert(double& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(char& val) const
|
|
{
|
|
UInt8 tmp;
|
|
convert(tmp);
|
|
val = static_cast<char>(tmp);
|
|
}
|
|
|
|
void convert(std::string& val) const
|
|
{
|
|
val = NumberFormatter::format(_val);
|
|
}
|
|
|
|
VarHolder* clone() const
|
|
{
|
|
return new VarHolderImpl(_val);
|
|
}
|
|
|
|
const double& value() const
|
|
{
|
|
return _val;
|
|
}
|
|
|
|
bool isArray() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isStruct() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isInteger() const
|
|
{
|
|
return std::numeric_limits<double>::is_integer;
|
|
}
|
|
|
|
bool isSigned() const
|
|
{
|
|
return std::numeric_limits<double>::is_signed;
|
|
}
|
|
|
|
bool isNumeric() const
|
|
{
|
|
return std::numeric_limits<double>::is_specialized;
|
|
}
|
|
|
|
bool isString() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
private:
|
|
VarHolderImpl();
|
|
VarHolderImpl(const VarHolderImpl&);
|
|
VarHolderImpl& operator = (const VarHolderImpl&);
|
|
|
|
double _val;
|
|
};
|
|
|
|
|
|
template <>
|
|
class VarHolderImpl<char>: public VarHolder
|
|
{
|
|
public:
|
|
VarHolderImpl(char val): _val(val)
|
|
{
|
|
}
|
|
|
|
~VarHolderImpl()
|
|
{
|
|
}
|
|
|
|
const std::type_info& type() const
|
|
{
|
|
return typeid(char);
|
|
}
|
|
|
|
void convert(Int8& val) const
|
|
{
|
|
val = static_cast<Int8>(_val);
|
|
}
|
|
|
|
void convert(Int16& val) const
|
|
{
|
|
val = static_cast<UInt8>(_val);
|
|
}
|
|
|
|
void convert(Int32& val) const
|
|
{
|
|
val = static_cast<UInt8>(_val);
|
|
}
|
|
|
|
void convert(Int64& val) const
|
|
{
|
|
val = static_cast<UInt8>(_val);
|
|
}
|
|
|
|
void convert(UInt8& val) const
|
|
{
|
|
val = static_cast<UInt8>(_val);
|
|
}
|
|
|
|
void convert(UInt16& val) const
|
|
{
|
|
val = static_cast<UInt8>(_val);
|
|
}
|
|
|
|
void convert(UInt32& val) const
|
|
{
|
|
val = static_cast<UInt8>(_val);
|
|
}
|
|
|
|
void convert(UInt64& val) const
|
|
{
|
|
val = static_cast<UInt8>(_val);
|
|
}
|
|
|
|
void convert(bool& val) const
|
|
{
|
|
val = (_val != '\0');
|
|
}
|
|
|
|
void convert(float& val) const
|
|
{
|
|
val = static_cast<float>(_val);
|
|
}
|
|
|
|
void convert(double& val) const
|
|
{
|
|
val = static_cast<double>(_val);
|
|
}
|
|
|
|
void convert(char& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(std::string& val) const
|
|
{
|
|
val = std::string(1, _val);
|
|
}
|
|
|
|
VarHolder* clone() const
|
|
{
|
|
return new VarHolderImpl(_val);
|
|
}
|
|
|
|
const char& value() const
|
|
{
|
|
return _val;
|
|
}
|
|
|
|
bool isArray() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isStruct() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isInteger() const
|
|
{
|
|
return std::numeric_limits<char>::is_integer;
|
|
}
|
|
|
|
bool isSigned() const
|
|
{
|
|
return std::numeric_limits<char>::is_signed;
|
|
}
|
|
|
|
bool isNumeric() const
|
|
{
|
|
return std::numeric_limits<char>::is_specialized;
|
|
}
|
|
|
|
bool isString() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
private:
|
|
VarHolderImpl();
|
|
VarHolderImpl(const VarHolderImpl&);
|
|
VarHolderImpl& operator = (const VarHolderImpl&);
|
|
|
|
char _val;
|
|
};
|
|
|
|
|
|
template <>
|
|
class VarHolderImpl<std::string>: public VarHolder
|
|
{
|
|
public:
|
|
VarHolderImpl(const char* pVal): _val(pVal)
|
|
{
|
|
}
|
|
|
|
VarHolderImpl(const std::string& val): _val(val)
|
|
{
|
|
}
|
|
|
|
~VarHolderImpl()
|
|
{
|
|
}
|
|
|
|
const std::type_info& type() const
|
|
{
|
|
return typeid(std::string);
|
|
}
|
|
|
|
void convert(Int8& val) const
|
|
{
|
|
int v = NumberParser::parse(_val);
|
|
convertToSmaller(v, val);
|
|
}
|
|
|
|
void convert(Int16& val) const
|
|
{
|
|
int v = NumberParser::parse(_val);
|
|
convertToSmaller(v, val);
|
|
}
|
|
|
|
void convert(Int32& val) const
|
|
{
|
|
val = NumberParser::parse(_val);
|
|
}
|
|
|
|
void convert(Int64& val) const
|
|
{
|
|
val = NumberParser::parse64(_val);
|
|
}
|
|
|
|
void convert(UInt8& val) const
|
|
{
|
|
unsigned int v = NumberParser::parseUnsigned(_val);
|
|
convertToSmallerUnsigned(v, val);
|
|
}
|
|
|
|
void convert(UInt16& val) const
|
|
{
|
|
unsigned int v = NumberParser::parseUnsigned(_val);
|
|
convertToSmallerUnsigned(v, val);
|
|
}
|
|
|
|
void convert(UInt32& val) const
|
|
{
|
|
val = NumberParser::parseUnsigned(_val);
|
|
}
|
|
|
|
void convert(UInt64& val) const
|
|
{
|
|
val = NumberParser::parseUnsigned64(_val);
|
|
}
|
|
|
|
void convert(bool& val) const
|
|
{
|
|
static const std::string VAL_FALSE("false");
|
|
static const std::string VAL_INT_FALSE("0");
|
|
|
|
if (_val.empty() ||
|
|
_val == VAL_INT_FALSE ||
|
|
(icompare(_val, VAL_FALSE) == 0))
|
|
{
|
|
val = false;
|
|
}
|
|
else val = true;
|
|
}
|
|
|
|
void convert(float& val) const
|
|
{
|
|
double v = NumberParser::parseFloat(_val);
|
|
convertToSmaller(v, val);
|
|
}
|
|
|
|
void convert(double& val) const
|
|
{
|
|
val = NumberParser::parseFloat(_val);
|
|
}
|
|
|
|
void convert(char& val) const
|
|
{
|
|
if (_val.empty())
|
|
val = '\0';
|
|
else
|
|
val = _val[0];
|
|
}
|
|
|
|
void convert(std::string& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(DateTime& val) const
|
|
{
|
|
int tzd = 0;
|
|
if (!DateTimeParser::tryParse(DateTimeFormat::ISO8601_FORMAT, _val, val, tzd))
|
|
throw BadCastException("string -> DateTime");
|
|
}
|
|
|
|
void convert(LocalDateTime& ldt) const
|
|
{
|
|
int tzd = 0;
|
|
DateTime tmp;
|
|
if (!DateTimeParser::tryParse(DateTimeFormat::ISO8601_FORMAT, _val, tmp, tzd))
|
|
throw BadCastException("string -> LocalDateTime");
|
|
|
|
ldt = LocalDateTime(tzd, tmp, false);
|
|
}
|
|
|
|
void convert(Timestamp& ts) const
|
|
{
|
|
int tzd = 0;
|
|
DateTime tmp;
|
|
if (!DateTimeParser::tryParse(DateTimeFormat::ISO8601_FORMAT, _val, tmp, tzd))
|
|
throw BadCastException("string -> Timestamp");
|
|
|
|
ts = tmp.timestamp();
|
|
}
|
|
|
|
VarHolder* clone() const
|
|
{
|
|
return new VarHolderImpl(_val);
|
|
}
|
|
|
|
const std::string& value() const
|
|
{
|
|
return _val;
|
|
}
|
|
|
|
bool isArray() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isStruct() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isInteger() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isSigned() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isNumeric() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isString() const
|
|
{
|
|
return true;
|
|
}
|
|
|
|
private:
|
|
VarHolderImpl();
|
|
VarHolderImpl(const VarHolderImpl&);
|
|
VarHolderImpl& operator = (const VarHolderImpl&);
|
|
|
|
std::string _val;
|
|
};
|
|
|
|
|
|
#ifndef POCO_LONG_IS_64_BIT
|
|
|
|
|
|
template <>
|
|
class VarHolderImpl<long>: public VarHolder
|
|
{
|
|
public:
|
|
VarHolderImpl(long val): _val(val)
|
|
{
|
|
}
|
|
|
|
~VarHolderImpl()
|
|
{
|
|
}
|
|
|
|
const std::type_info& type() const
|
|
{
|
|
return typeid(long);
|
|
}
|
|
|
|
void convert(Int8& val) const
|
|
{
|
|
convertToSmaller(_val, val);
|
|
}
|
|
|
|
void convert(Int16& val) const
|
|
{
|
|
convertToSmaller(_val, val);
|
|
}
|
|
|
|
void convert(Int32& val) const
|
|
{
|
|
val = static_cast<Int32>(_val);
|
|
}
|
|
|
|
void convert(Int64& val) const
|
|
{
|
|
val = static_cast<Int64>(_val);
|
|
}
|
|
|
|
void convert(UInt8& val) const
|
|
{
|
|
convertSignedToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt16& val) const
|
|
{
|
|
convertSignedToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt32& val) const
|
|
{
|
|
convertSignedToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt64& val) const
|
|
{
|
|
convertSignedToUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(bool& val) const
|
|
{
|
|
val = (_val != 0);
|
|
}
|
|
|
|
void convert(float& val) const
|
|
{
|
|
val = static_cast<float>(_val);
|
|
}
|
|
|
|
void convert(double& val) const
|
|
{
|
|
val = static_cast<double>(_val);
|
|
}
|
|
|
|
void convert(char& val) const
|
|
{
|
|
UInt8 tmp;
|
|
convert(tmp);
|
|
val = static_cast<char>(tmp);
|
|
}
|
|
|
|
void convert(std::string& val) const
|
|
{
|
|
val = NumberFormatter::format(_val);
|
|
}
|
|
|
|
VarHolder* clone() const
|
|
{
|
|
return new VarHolderImpl(_val);
|
|
}
|
|
|
|
const long& value() const
|
|
{
|
|
return _val;
|
|
}
|
|
|
|
bool isArray() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isStruct() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isInteger() const
|
|
{
|
|
return std::numeric_limits<long>::is_integer;
|
|
}
|
|
|
|
bool isSigned() const
|
|
{
|
|
return std::numeric_limits<long>::is_signed;
|
|
}
|
|
|
|
bool isNumeric() const
|
|
{
|
|
return std::numeric_limits<long>::is_specialized;
|
|
}
|
|
|
|
bool isString() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
private:
|
|
VarHolderImpl();
|
|
VarHolderImpl(const VarHolderImpl&);
|
|
VarHolderImpl& operator = (const VarHolderImpl&);
|
|
|
|
long _val;
|
|
};
|
|
|
|
|
|
template <>
|
|
class VarHolderImpl<unsigned long>: public VarHolder
|
|
{
|
|
public:
|
|
VarHolderImpl(unsigned long val): _val(val)
|
|
{
|
|
}
|
|
|
|
~VarHolderImpl()
|
|
{
|
|
}
|
|
|
|
const std::type_info& type() const
|
|
{
|
|
return typeid(unsigned long);
|
|
}
|
|
|
|
void convert(Int8& val) const
|
|
{
|
|
convertUnsignedToSigned(_val, val);
|
|
}
|
|
|
|
void convert(Int16& val) const
|
|
{
|
|
convertUnsignedToSigned(_val, val);
|
|
}
|
|
|
|
void convert(Int32& val) const
|
|
{
|
|
convertUnsignedToSigned(_val, val);
|
|
}
|
|
|
|
void convert(Int64& val) const
|
|
{
|
|
convertUnsignedToSigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt8& val) const
|
|
{
|
|
convertToSmallerUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt16& val) const
|
|
{
|
|
convertToSmallerUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt32& val) const
|
|
{
|
|
convertToSmallerUnsigned(_val, val);
|
|
}
|
|
|
|
void convert(UInt64& val) const
|
|
{
|
|
val = static_cast<UInt64>(_val);
|
|
}
|
|
|
|
void convert(bool& val) const
|
|
{
|
|
val = (_val != 0);
|
|
}
|
|
|
|
void convert(float& val) const
|
|
{
|
|
val = static_cast<float>(_val);
|
|
}
|
|
|
|
void convert(double& val) const
|
|
{
|
|
val = static_cast<double>(_val);
|
|
}
|
|
|
|
void convert(char& val) const
|
|
{
|
|
UInt8 tmp;
|
|
convert(tmp);
|
|
val = static_cast<char>(tmp);
|
|
}
|
|
|
|
void convert(std::string& val) const
|
|
{
|
|
val = NumberFormatter::format(_val);
|
|
}
|
|
|
|
VarHolder* clone() const
|
|
{
|
|
return new VarHolderImpl(_val);
|
|
}
|
|
|
|
const unsigned long& value() const
|
|
{
|
|
return _val;
|
|
}
|
|
|
|
bool isArray() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isStruct() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isInteger() const
|
|
{
|
|
return std::numeric_limits<unsigned long>::is_integer;
|
|
}
|
|
|
|
bool isSigned() const
|
|
{
|
|
return std::numeric_limits<unsigned long>::is_signed;
|
|
}
|
|
|
|
bool isNumeric() const
|
|
{
|
|
return std::numeric_limits<unsigned long>::is_specialized;
|
|
}
|
|
|
|
bool isString() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
private:
|
|
VarHolderImpl();
|
|
VarHolderImpl(const VarHolderImpl&);
|
|
VarHolderImpl& operator = (const VarHolderImpl&);
|
|
|
|
unsigned long _val;
|
|
};
|
|
|
|
|
|
#endif // 64bit
|
|
|
|
|
|
template <typename T>
|
|
class VarHolderImpl<std::vector<T> >: public VarHolder
|
|
{
|
|
public:
|
|
VarHolderImpl(const std::vector<T>& val): _val(val)
|
|
{
|
|
}
|
|
|
|
~VarHolderImpl()
|
|
{
|
|
}
|
|
|
|
const std::type_info& type() const
|
|
{
|
|
return typeid(std::vector<T>);
|
|
}
|
|
|
|
void convert(std::string& val) const
|
|
{
|
|
// Serialize in JSON format: note: although this is a vector<T>, the code only
|
|
// supports vector<Var>. Total specialization is not possible
|
|
// because of the cyclic dependency between Var and VarHolder
|
|
|
|
// JSON format definition: [ n times: elem ',' ], no ',' for last elem
|
|
val.append("[ ");
|
|
typename std::vector<T>::const_iterator it = _val.begin();
|
|
typename std::vector<T>::const_iterator itEnd = _val.end();
|
|
if (!_val.empty())
|
|
{
|
|
appendJSONString(val, *it);
|
|
++it;
|
|
}
|
|
for (; it != itEnd; ++it)
|
|
{
|
|
|
|
val.append(", ");
|
|
appendJSONString(val, *it);
|
|
}
|
|
val.append(" ]");
|
|
}
|
|
|
|
VarHolder* clone() const
|
|
{
|
|
return new VarHolderImpl(_val);
|
|
}
|
|
|
|
const std::vector<T>& value() const
|
|
{
|
|
return _val;
|
|
}
|
|
|
|
bool isArray() const
|
|
{
|
|
return true;
|
|
}
|
|
|
|
bool isStruct() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isInteger() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isSigned() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isNumeric() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isString() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
T& operator[](typename std::vector<T>::size_type n)
|
|
{
|
|
return _val.operator[](n);
|
|
}
|
|
|
|
const T& operator[](typename std::vector<T>::size_type n) const
|
|
{
|
|
return _val.operator[](n);
|
|
}
|
|
|
|
private:
|
|
VarHolderImpl();
|
|
VarHolderImpl(const VarHolderImpl&);
|
|
VarHolderImpl& operator = (const VarHolderImpl&);
|
|
|
|
std::vector<T> _val;
|
|
};
|
|
|
|
|
|
template <>
|
|
class VarHolderImpl<DateTime>: public VarHolder
|
|
{
|
|
public:
|
|
VarHolderImpl(const DateTime& val): _val(val)
|
|
{
|
|
}
|
|
|
|
~VarHolderImpl()
|
|
{
|
|
}
|
|
|
|
const std::type_info& type() const
|
|
{
|
|
return typeid(DateTime);
|
|
}
|
|
|
|
void convert(Int8& val) const
|
|
{
|
|
throw BadCastException();
|
|
}
|
|
|
|
void convert(Int16& val) const
|
|
{
|
|
throw BadCastException();
|
|
}
|
|
|
|
void convert(Int32& val) const
|
|
{
|
|
throw BadCastException();
|
|
}
|
|
|
|
void convert(Int64& val) const
|
|
{
|
|
val = _val.timestamp().epochMicroseconds();
|
|
}
|
|
|
|
void convert(UInt64& val) const
|
|
{
|
|
val = _val.timestamp().epochMicroseconds();
|
|
}
|
|
|
|
void convert(std::string& val) const
|
|
{
|
|
val = DateTimeFormatter::format(_val, Poco::DateTimeFormat::ISO8601_FORMAT);
|
|
}
|
|
|
|
void convert(DateTime& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(LocalDateTime& ldt) const
|
|
{
|
|
ldt = _val.timestamp();
|
|
}
|
|
|
|
void convert(Timestamp& ts) const
|
|
{
|
|
ts = _val.timestamp();
|
|
}
|
|
|
|
VarHolder* clone() const
|
|
{
|
|
return new VarHolderImpl(_val);
|
|
}
|
|
|
|
const DateTime& value() const
|
|
{
|
|
return _val;
|
|
}
|
|
|
|
bool isArray() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isStruct() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isInteger() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isSigned() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isNumeric() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isString() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
private:
|
|
VarHolderImpl();
|
|
VarHolderImpl(const VarHolderImpl&);
|
|
VarHolderImpl& operator = (const VarHolderImpl&);
|
|
|
|
DateTime _val;
|
|
};
|
|
|
|
|
|
template <>
|
|
class VarHolderImpl<LocalDateTime>: public VarHolder
|
|
{
|
|
public:
|
|
VarHolderImpl(const LocalDateTime& val): _val(val)
|
|
{
|
|
}
|
|
|
|
~VarHolderImpl()
|
|
{
|
|
}
|
|
|
|
const std::type_info& type() const
|
|
{
|
|
return typeid(LocalDateTime);
|
|
}
|
|
|
|
void convert(Int64& val) const
|
|
{
|
|
val = _val.timestamp().epochMicroseconds();
|
|
}
|
|
|
|
void convert(UInt64& val) const
|
|
{
|
|
val = _val.timestamp().epochMicroseconds();
|
|
}
|
|
|
|
void convert(std::string& val) const
|
|
{
|
|
val = DateTimeFormatter::format(_val, Poco::DateTimeFormat::ISO8601_FORMAT);
|
|
}
|
|
|
|
void convert(DateTime& val) const
|
|
{
|
|
val = _val.timestamp();
|
|
}
|
|
|
|
void convert(LocalDateTime& ldt) const
|
|
{
|
|
ldt = _val;
|
|
}
|
|
|
|
void convert(Timestamp& ts) const
|
|
{
|
|
ts = _val.timestamp();
|
|
}
|
|
|
|
VarHolder* clone() const
|
|
{
|
|
return new VarHolderImpl(_val);
|
|
}
|
|
|
|
const LocalDateTime& value() const
|
|
{
|
|
return _val;
|
|
}
|
|
|
|
bool isArray() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isStruct() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isInteger() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isSigned() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isNumeric() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isString() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
private:
|
|
VarHolderImpl();
|
|
VarHolderImpl(const VarHolderImpl&);
|
|
VarHolderImpl& operator = (const VarHolderImpl&);
|
|
|
|
LocalDateTime _val;
|
|
};
|
|
|
|
|
|
template <>
|
|
class VarHolderImpl<Timestamp>: public VarHolder
|
|
{
|
|
public:
|
|
VarHolderImpl(const Timestamp& val): _val(val)
|
|
{
|
|
}
|
|
|
|
~VarHolderImpl()
|
|
{
|
|
}
|
|
|
|
const std::type_info& type() const
|
|
{
|
|
return typeid(Timestamp);
|
|
}
|
|
|
|
void convert(Int64& val) const
|
|
{
|
|
val = _val.epochMicroseconds();
|
|
}
|
|
|
|
void convert(UInt64& val) const
|
|
{
|
|
val = _val.epochMicroseconds();
|
|
}
|
|
|
|
void convert(std::string& val) const
|
|
{
|
|
val = DateTimeFormatter::format(_val, Poco::DateTimeFormat::ISO8601_FORMAT);
|
|
}
|
|
|
|
void convert(DateTime& val) const
|
|
{
|
|
val = _val;
|
|
}
|
|
|
|
void convert(LocalDateTime& ldt) const
|
|
{
|
|
ldt = _val;
|
|
}
|
|
|
|
void convert(Timestamp& ts) const
|
|
{
|
|
ts = _val;
|
|
}
|
|
|
|
VarHolder* clone() const
|
|
{
|
|
return new VarHolderImpl(_val);
|
|
}
|
|
|
|
const Timestamp& value() const
|
|
{
|
|
return _val;
|
|
}
|
|
|
|
bool isArray() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isStruct() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isInteger() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isSigned() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isNumeric() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool isString() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
private:
|
|
VarHolderImpl();
|
|
VarHolderImpl(const VarHolderImpl&);
|
|
VarHolderImpl& operator = (const VarHolderImpl&);
|
|
|
|
Timestamp _val;
|
|
};
|
|
|
|
|
|
} } // namespace Poco::Dynamic
|
|
|
|
|
|
#endif // Foundation_VarHolder_INCLUDED
|