本文整理汇总了C++中QgsVectorDataProvider::featureAtId方法的典型用法代码示例。如果您正苦于以下问题：C++ QgsVectorDataProvider::featureAtId方法的具体用法？C++ QgsVectorDataProvider::featureAtId怎么用？C++ QgsVectorDataProvider::featureAtId使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QgsVectorDataProvider的用法示例。
在下文中一共展示了QgsVectorDataProvider::featureAtId方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: getFeature
//.........这里部分代码省略.........
QMap<QString, QString>::const_iterator pnIt = mParameterMap.find( "PROPERTYNAME" );
if ( pnIt != mParameterMap.end() )
{
QStringList attrList = pnIt.value().split( "," );
if ( attrList.size() > 0 )
{
mWithGeom = false;
QStringList::const_iterator alstIt;
QList<int> idxList;
QMap<QString, int> fieldMap = provider->fieldNameMap();
QMap<QString, int>::const_iterator fieldIt;
QString fieldName;
for ( alstIt = attrList.begin(); alstIt != attrList.end(); ++alstIt )
{
fieldName = *alstIt;
fieldIt = fieldMap.find( fieldName );
if ( fieldIt != fieldMap.end() )
{
idxList.append( fieldIt.value() );
}
else if ( fieldName == "geometry" )
{
mWithGeom = true;
}
}
if ( idxList.size() > 0 || mWithGeom )
{
attrIndexes = idxList;
}
else
{
mWithGeom = true;
}
}
}
QgsCoordinateReferenceSystem layerCrs = layer->crs();
startGetFeature( request, format );
if ( fidOk )
{
provider->featureAtId( fid.toInt(), feature, mWithGeom, attrIndexes );
sendGetFeature( request, format, &feature, 0, layerCrs, fields, layerHiddenAttributes );
}
else if ( filterOk )
{
provider->select( attrIndexes, searchRect, mWithGeom, true );
try
{
QgsFilter* mFilter = QgsFilter::createFilterFromXml( filter.firstChild().toElement().firstChild().toElement(), layer );
while ( provider->nextFeature( feature ) && featureCounter < maxFeat )
{
if ( mFilter )
{
if ( mFilter->evaluate( feature ) )
{
sendGetFeature( request, format, &feature, featureCounter, layerCrs, fields, layerHiddenAttributes );
++featureCounter;
}
}
else
{
sendGetFeature( request, format, &feature, featureCounter, layerCrs, fields, layerHiddenAttributes );
++featureCounter;
}
}
delete mFilter;
}
catch ( QgsMapServiceException& e )
{
Q_UNUSED( e );
while ( provider->nextFeature( feature ) && featureCounter < maxFeat )
{
sendGetFeature( request, format, &feature, featureCounter, layerCrs, fields, layerHiddenAttributes );
++featureCounter;
}
}
}
else
{
if ( bboxOk )
searchRect.set( minx, miny, maxx, maxy );
provider->select( attrIndexes, searchRect, mWithGeom, true );
while ( provider->nextFeature( feature ) && featureCounter < maxFeat )
{
sendGetFeature( request, format, &feature, featureCounter, layerCrs, fields, layerHiddenAttributes );
++featureCounter;
}
}
endGetFeature( request, format );
}
else
{
return 2;
}
return 0;
}