FDO API Reference | Feature Data Objects |
00001 #ifndef _UNARYEXPRESSION_H_ 00002 #define _UNARYEXPRESSION_H_ 00003 // 00004 00005 // 00006 // Copyright (C) 2004-2006 Autodesk, Inc. 00007 // 00008 // This library is free software; you can redistribute it and/or 00009 // modify it under the terms of version 2.1 of the GNU Lesser 00010 // General Public License as published by the Free Software Foundation. 00011 // 00012 // This library is distributed in the hope that it will be useful, 00013 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00015 // Lesser General Public License for more details. 00016 // 00017 // You should have received a copy of the GNU Lesser General Public 00018 // License along with this library; if not, write to the Free Software 00019 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 00020 // 00021 00022 #ifdef _WIN32 00023 #pragma once 00024 #endif 00025 00026 #include <FdoStd.h> 00027 #include <Fdo/Expression/Expression.h> 00028 #include <Fdo/Expression/UnaryOperations.h> 00029 00030 /// \brief 00031 /// The FdoUnaryExpression class derives from FdoExpression and allows negation of 00032 /// arithmetic expressions. 00033 class FdoUnaryExpression : public FdoExpression 00034 { 00035 protected: 00036 /// \cond DOXYGEN-IGNORE 00037 /// Constructs a default instance of an FdoUnaryExpression. 00038 FdoUnaryExpression(); 00039 00040 /// Constructs an instance of an FdoUnaryExpression using the specified arguments. 00041 FdoUnaryExpression(FdoUnaryOperations operation, FdoExpression* expression); 00042 00043 /// Default destructor for FdoUnaryExpression. 00044 virtual ~FdoUnaryExpression(); 00045 00046 virtual void Dispose(); 00047 /// \endcond 00048 00049 public: 00050 00051 /// \brief 00052 /// Constructs a default instance of an FdoUnaryExpression. 00053 /// 00054 /// \return 00055 /// Returns FdoUnaryExpression 00056 /// 00057 FDO_API static FdoUnaryExpression* Create(); 00058 00059 /// \brief 00060 /// Constructs an instance of an FdoUnaryExpression using the specified arguments. 00061 /// 00062 /// \param operation 00063 /// Input the type of unary operation 00064 /// \param expression 00065 /// Input the expression 00066 /// 00067 /// \return 00068 /// Returns FdoUnaryExpression 00069 /// 00070 FDO_API static FdoUnaryExpression* Create(FdoUnaryOperations operation, FdoExpression* expression); 00071 00072 /// \brief 00073 /// Gets the unary operation to be evaluated by this expression. 00074 /// 00075 /// \return 00076 /// Returns the unary operation 00077 /// 00078 FDO_API FdoUnaryOperations GetOperation(); 00079 00080 /// \brief 00081 /// Sets the unary operation to be evaluated by this expression. 00082 /// 00083 /// \param value 00084 /// Input the type of unary operation 00085 /// 00086 /// \return 00087 /// Returns nothing 00088 /// 00089 FDO_API void SetOperation(FdoUnaryOperations value); 00090 00091 /// \brief 00092 /// Gets the expression to be operated on. 00093 /// 00094 /// \return 00095 /// Returns the expression 00096 /// 00097 FDO_API FdoExpression* GetExpression(); 00098 00099 /// \brief 00100 /// Sets the expression to be operated on. 00101 /// 00102 /// \param value 00103 /// Input the value expression 00104 /// 00105 /// \return 00106 /// Returns nothing 00107 /// 00108 FDO_API void SetExpression(FdoExpression* value); 00109 00110 /// \brief 00111 /// Overrides FdoExpression.Process to pass the FdoUnaryExpression to the 00112 /// appropriate expression processor operation. 00113 /// 00114 /// \param p 00115 /// Input expression processor interface 00116 /// 00117 /// \return 00118 /// Returns nothing 00119 /// 00120 FDO_API void Process(FdoIExpressionProcessor* p); 00121 00122 /// \brief 00123 /// Returns the well defined text representation of this expression. 00124 /// 00125 /// \return 00126 /// Returns the well defined text representation of this expression 00127 /// 00128 FDO_API FdoString* ToString(); 00129 00130 /// \brief 00131 /// This is an internal method. It returns the well defined text representation of the expression. 00132 /// 00133 /// \param pIdCol 00134 /// A identifier collection that contains all the computed identifier used by the filter 00135 /// 00136 /// \return 00137 /// Returns the well defined text string 00138 /// 00139 FdoString* ToStringInternal( FdoIdentifierCollection *pIdCol ); 00140 00141 private: 00142 FdoUnaryOperations m_operation; 00143 FdoExpression* m_expr; 00144 }; 00145 #endif 00146 00147
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