| FDO .NET API Reference | Feature Data Objects |
00001 /* 00002 * Copyright (C) 2004-2006 Autodesk, Inc. 00003 * 00004 * This library is free software; you can redistribute it and/or 00005 * modify it under the terms of version 2.1 of the GNU Lesser 00006 * General Public License as published by the Free Software Foundation. 00007 * 00008 * This library is distributed in the hope that it will be useful, 00009 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00010 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00011 * Lesser General Public License for more details. 00012 * 00013 * You should have received a copy of the GNU Lesser General Public 00014 * License along with this library; if not, write to the Free Software 00015 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 00016 * 00017 */ 00018 00019 #pragma once 00020 00021 #include "FDO\Commands\Feature\mgIReaderImp.h" 00022 #include "FDO\Commands\Feature\mgIDataReader.h" 00023 00024 #include "FDO\Schema\mgDataType.h" 00025 #include "FDO\Schema\mgPropertyType.h" 00026 00027 class FdoIDataReader; 00028 00029 BEGIN_NAMESPACE_OSGEO_FDO_COMMANDS_FEATURE 00030 00031 /// \ingroup (OSGeoFDOCommandsFeature) 00032 /// \brief 00033 /// The IDataReaderImp class is a concrete implementation class for 00034 /// IDataReader. The IDataReader interface provides a forward-only, read-only 00035 /// iterator for reading relational table data. A reference to an 00036 /// IDataReader is returned from the SQLCommands ExecuteReader method. 00037 /// The initial position of the IDataReader interface is prior to the first item. 00038 /// Thus, you must call ReadNext to begin accessing any data. 00039 private __gc class IDataReaderImp : public NAMESPACE_OSGEO_FDO_COMMANDS_FEATURE::IReaderImp, public NAMESPACE_OSGEO_FDO_COMMANDS_FEATURE::IDataReader 00040 { 00041 public: 00042 /// \brief 00043 /// Gets the number of propertys in the result set. 00044 /// 00045 /// \return 00046 /// Returns the number of propertys. 00047 /// 00048 System::Int32 GetPropertyCount(); 00049 00050 /// \brief 00051 /// Gets the name of the property at the given ordinal position. 00052 /// 00053 /// \param index 00054 /// Input the position of the property. 00055 /// 00056 /// \return 00057 /// Returns the property name 00058 /// 00059 System::String* GetPropertyName(System::Int32 index); 00060 00061 /// \brief 00062 /// Gets the data type of the property with the specified name. 00063 /// 00064 /// \param name 00065 /// Input the property name. 00066 /// 00067 /// \return 00068 /// Returns the data type of the property corresponding to the property name. 00069 /// 00070 NAMESPACE_OSGEO_FDO_SCHEMA::DataType GetDataType(System::String* name); 00071 00072 /// \brief 00073 /// Gets the property type of a given property. This is used 00074 /// to indicate if a given property is a geometric property or a data property. If the property is 00075 /// a PropertyType_DataProperty, then GetDataType can be used to to find the data type of the property. 00076 /// 00077 /// \param name 00078 /// Input the property name. 00079 /// 00080 /// \return 00081 /// Returns the property type corresponding to the property name. 00082 /// 00083 NAMESPACE_OSGEO_FDO_SCHEMA::PropertyType GetPropertyType(System::String* name); 00084 00085 public private: 00086 IDataReaderImp(System::IntPtr unmanaged, System::Boolean autoDelete) : NAMESPACE_OSGEO_FDO_COMMANDS_FEATURE::IReaderImp(unmanaged, autoDelete) 00087 { 00088 00089 } 00090 00091 inline FdoIDataReader* GetImpObj(); 00092 }; 00093 00094 END_NAMESPACE_OSGEO_FDO_COMMANDS_FEATURE 00095 00096
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