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gdal库的学习文档

<a name="l00100"></a><a class="code" href="classOGRLayer.html#2687d4312c044bb3a20bd13974ba8905">00100</a>     <span class="keywordtype">void</span>                SetStyleTableDirectly( OGRStyleTable *poStyleTable )
<a name="l00101"></a>00101                             { <span class="keywordflow">if</span> ( m_poStyleTable ) <span class="keyword">delete</span> m_poStyleTable;
<a name="l00102"></a>00102                               m_poStyleTable = poStyleTable; }
<a name="l00103"></a><a class="code" href="classOGRLayer.html#33fa0802c0686fb0e6ca6337e11cd7d5">00103</a>     <span class="keywordtype">void</span>                SetStyleTable(OGRStyleTable *poStyleTable)
<a name="l00104"></a>00104                             {
<a name="l00105"></a>00105                                 <span class="keywordflow">if</span> ( m_poStyleTable ) <span class="keyword">delete</span> m_poStyleTable;
<a name="l00106"></a>00106                                 <span class="keywordflow">if</span> ( poStyleTable )
<a name="l00107"></a>00107                                     m_poStyleTable = poStyleTable-&gt;Clone();
<a name="l00108"></a>00108                             }
<a name="l00109"></a>00109 
<a name="l00110"></a>00110     <span class="keyword">virtual</span> OGRErr      StartTransaction();
<a name="l00111"></a>00111     <span class="keyword">virtual</span> OGRErr      CommitTransaction();
<a name="l00112"></a>00112     <span class="keyword">virtual</span> OGRErr      RollbackTransaction();
<a name="l00113"></a>00113 
<a name="l00114"></a>00114     <span class="keyword">virtual</span> <span class="keyword">const</span> <span class="keywordtype">char</span> *GetFIDColumn();
<a name="l00115"></a>00115     <span class="keyword">virtual</span> <span class="keyword">const</span> <span class="keywordtype">char</span> *GetGeometryColumn();
<a name="l00116"></a>00116 
<a name="l00117"></a>00117     <span class="keywordtype">int</span>                 Reference();
<a name="l00118"></a>00118     <span class="keywordtype">int</span>                 Dereference();
<a name="l00119"></a>00119     <span class="keywordtype">int</span>                 GetRefCount() <span class="keyword">const</span>;
<a name="l00120"></a>00120 
<a name="l00121"></a>00121     GIntBig             GetFeaturesRead();
<a name="l00122"></a>00122     
<a name="l00123"></a>00123     <span class="comment">/* consider these private */</span>
<a name="l00124"></a>00124     OGRErr               InitializeIndexSupport( <span class="keyword">const</span> <span class="keywordtype">char</span> * );
<a name="l00125"></a>00125     OGRLayerAttrIndex   *GetIndex() { <span class="keywordflow">return</span> m_poAttrIndex; }
<a name="l00126"></a>00126 
<a name="l00127"></a>00127  <span class="keyword">protected</span>:
<a name="l00128"></a>00128     OGRStyleTable       *m_poStyleTable;
<a name="l00129"></a>00129     OGRFeatureQuery     *m_poAttrQuery;
<a name="l00130"></a>00130     OGRLayerAttrIndex   *m_poAttrIndex;
<a name="l00131"></a>00131 
<a name="l00132"></a>00132     <span class="keywordtype">int</span>                  m_nRefCount;
<a name="l00133"></a>00133 
<a name="l00134"></a>00134     GIntBig              m_nFeaturesRead;
<a name="l00135"></a>00135 };
<a name="l00136"></a>00136 
<a name="l00137"></a>00137 
<a name="l00138"></a>00138 <span class="comment">/************************************************************************/</span>
<a name="l00139"></a>00139 <span class="comment">/*                            OGRDataSource                             */</span>
<a name="l00140"></a>00140 <span class="comment">/************************************************************************/</span>
<a name="l00141"></a>00141 
<a name="l00152"></a><a class="code" href="classOGRDataSource.html">00152</a> <span class="keyword">class </span>CPL_DLL OGRDataSource
<a name="l00153"></a>00153 {
<a name="l00154"></a>00154     <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="classOGRSFDriverRegistrar.html">OGRSFDriverRegistrar</a>;
<a name="l00155"></a>00155 
<a name="l00156"></a>00156   <span class="keyword">public</span>:
<a name="l00157"></a>00157 
<a name="l00158"></a>00158     OGRDataSource();
<a name="l00159"></a>00159     <span class="keyword">virtual</span>     ~OGRDataSource();
<a name="l00160"></a>00160     <span class="keyword">static</span> <span class="keywordtype">void</span>         DestroyDataSource( OGRDataSource * );
<a name="l00161"></a>00161 
<a name="l00162"></a>00162     <span class="keyword">virtual</span> <span class="keyword">const</span> <span class="keywordtype">char</span>  *GetName() = 0;
<a name="l00163"></a>00163 
<a name="l00164"></a>00164     <span class="keyword">virtual</span> <span class="keywordtype">int</span>         GetLayerCount() = 0;
<a name="l00165"></a>00165     <span class="keyword">virtual</span> <a class="code" href="classOGRLayer.html">OGRLayer</a>    *GetLayer(<span class="keywordtype">int</span>) = 0;
<a name="l00166"></a>00166     <span class="keyword">virtual</span> <a class="code" href="classOGRLayer.html">OGRLayer</a>    *GetLayerByName(<span class="keyword">const</span> <span class="keywordtype">char</span> *);
<a name="l00167"></a>00167     <span class="keyword">virtual</span> OGRErr      DeleteLayer(<span class="keywordtype">int</span>);
<a name="l00168"></a>00168 
<a name="l00169"></a>00169     <span class="keyword">virtual</span> <span class="keywordtype">int</span>         TestCapability( <span class="keyword">const</span> <span class="keywordtype">char</span> * ) = 0;
<a name="l00170"></a>00170 
<a name="l00171"></a>00171     <span class="keyword">virtual</span> <a class="code" href="classOGRLayer.html">OGRLayer</a>   *CreateLayer( <span class="keyword">const</span> <span class="keywordtype">char</span> *pszName, 
<a name="l00172"></a>00172                                      <a class="code" href="classOGRSpatialReference.html">OGRSpatialReference</a> *poSpatialRef = NULL,
<a name="l00173"></a>00173                                      OGRwkbGeometryType eGType = wkbUnknown,
<a name="l00174"></a>00174                                      <span class="keywordtype">char</span> ** papszOptions = NULL );
<a name="l00175"></a>00175     <span class="keyword">virtual</span> <a class="code" href="classOGRLayer.html">OGRLayer</a>   *CopyLayer( <a class="code" href="classOGRLayer.html">OGRLayer</a> *poSrcLayer, 
<a name="l00176"></a>00176                                    <span class="keyword">const</span> <span class="keywordtype">char</span> *pszNewName, 
<a name="l00177"></a>00177                                    <span class="keywordtype">char</span> **papszOptions = NULL );
<a name="l00178"></a>00178 
<a name="l00179"></a><a class="code" href="classOGRDataSource.html#82b1e41c460dda4633e3c4dd8f24326e">00179</a>     OGRStyleTable       *GetStyleTable(){ <span class="keywordflow">return</span> m_poStyleTable; }
<a name="l00180"></a><a class="code" href="classOGRDataSource.html#4946597d697db8dd802e20fc49c0c9ea">00180</a>     <span class="keywordtype">void</span>                SetStyleTableDirectly( OGRStyleTable *poStyleTable )
<a name="l00181"></a>00181                             { <span class="keywordflow">if</span> ( m_poStyleTable ) <span class="keyword">delete</span> m_poStyleTable;
<a name="l00182"></a>00182                               m_poStyleTable = poStyleTable; }
<a name="l00183"></a><a class="code" href="classOGRDataSource.html#36054cdc7e65827c05d3a27c7290f8d2">00183</a>     <span class="keywordtype">void</span>                SetStyleTable(OGRStyleTable *poStyleTable)
<a name="l00184"></a>00184                             {
<a name="l00185"></a>00185                                 <span class="keywordflow">if</span> ( m_poStyleTable ) <span class="keyword">delete</span> m_poStyleTable;
<a name="l00186"></a>00186                                 <span class="keywordflow">if</span> ( poStyleTable )
<a name="l00187"></a>00187                                     m_poStyleTable = poStyleTable-&gt;Clone();
<a name="l00188"></a>00188                             }
<a name="l00189"></a>00189 
<a name="l00190"></a>00190     <span class="keyword">virtual</span> <a class="code" href="classOGRLayer.html">OGRLayer</a> *  ExecuteSQL( <span class="keyword">const</span> <span class="keywordtype">char</span> *pszStatement,
<a name="l00191"></a>00191                                     <a class="code" href="classOGRGeometry.html">OGRGeometry</a> *poSpatialFilter,
<a name="l00192"></a>00192                                     <span class="keyword">const</span> <span class="keywordtype">char</span> *pszDialect );
<a name="l00193"></a>00193     <span class="keyword">virtual</span> <span class="keywordtype">void</span>        ReleaseResultSet( <a class="code" href="classOGRLayer.html">OGRLayer</a> * poResultsSet );
<a name="l00194"></a>00194 
<a name="l00195"></a>00195     <span class="keyword">virtual</span> OGRErr      SyncToDisk();
<a name="l00196"></a>00196 
<a name="l00197"></a>00197     <span class="keywordtype">int</span>                 Reference();
<a name="l00198"></a>00198     <span class="keywordtype">int</span>                 Dereference();
<a name="l00199"></a>00199     <span class="keywordtype">int</span>                 GetRefCount() <span class="keyword">const</span>;
<a name="l00200"></a>00200     <span class="keywordtype">int</span>                 GetSummaryRefCount() <span class="keyword">const</span>;
<a name="l00201"></a>00201     OGRErr              Release();
<a name="l00202"></a>00202 
<a name="l00203"></a>00203     <a class="code" href="classOGRSFDriver.html">OGRSFDriver</a>        *<a class="code" href="classOGRSFDriverRegistrar.html#359c5bcb65b737b1c59bab9c2ff78e7e">GetDriver</a>() <span class="keyword">const</span>;
<a name="l00204"></a>00204 
<a name="l00205"></a>00205   <span class="keyword">protected</span>:
<a name="l00206"></a>00206 
<a name="l00207"></a>00207     OGRErr              ProcessSQLCreateIndex( <span class="keyword">const</span> <span class="keywordtype">char</span> * );
<a name="l00208"></a>00208     OGRErr              ProcessSQLDropIndex( <span class="keyword">const</span> <span class="keywordtype">char</span> * );
<a name="l00209"></a>00209 
<a name="l00210"></a>00210     OGRStyleTable      *m_poStyleTable;
<a name="l00211"></a>00211     <span class="keywordtype">int</span>                 m_nRefCount;
<a name="l00212"></a>00212     <a class="code" href="classOGRSFDriver.html">OGRSFDriver</a>        *m_poDriver;
<a name="l00213"></a>00213 };
<a name="l00214"></a>00214 
<a name="l00215"></a>00215 <span class="comment">/************************************************************************/</span>
<a name="l00216"></a>00216 <span class="comment">/*                             OGRSFDriver                              */</span>
<a name="l00217"></a>00217 <span class="comment">/************************************************************************/</span>
<a name="l00218"></a>00218 
<a name="l00228"></a><a class="code" href="classOGRSFDriver.html">00228</a> <span class="keyword">class </span>CPL_DLL OGRSFDriver