拓扑检查C++(ArcObject)

 bool ArcmapDataBase::checkLayerTopology(dan::Object<iDataPlugin::IPGLayer> layer, const dan::DString &featureDatasetname, const dan::DString &topologyName, const dan::DString &topologyRuleName)
{/*参数含义：layer :需要进行拓扑检查的图层  featureDatasetname :所需创建的要素数据集名称 topologyName: 表示新建的拓扑名称 topologyRuleName ：表示创建拓扑规则的名称;*//*拓扑检查步骤：1. 新建要素数据集2. 导入要素类（单个/多个）3. 新建拓扑4. 添加拓扑规则5. 验证拓扑6. 导入拓扑图层*///得到当前要素工作空间mdbIFeatureWorkspacePtr ipFeatureWorkspace = getWorkspace();  dan::Object<ArcmapLayer> aLayer = layer;//获取当前空间参照(get ISpatialReference)IFeatureClassPtr ipFeatureClass = aLayer->getFeatureClass();IGeoDatasetPtr ipGeoDataset = ipFeatureClass;ISpatialReferencePtr ipSpatialRefrence;ipGeoDataset->get_SpatialReference(&ipSpatialRefrence);  //得到空间参照SpatialReference//创建要素数据集---（1.判断要素类是否存在要素数据集--(1)存在便无需创建 (2)不存在时则需创建相应要素数据集IFeatureDatasetPtr ipFeatureDataset;ipFeatureClass->get_FeatureDataset(&ipFeatureDataset); //判断是否存在该数据集;if (ipFeatureDataset == nullptr)  {/*1. 创建要素数据集 */ipFeatureWorkspace->CreateFeatureDataset(_bstr_t((LPCTSTR)featureDatasetname.utf16()), ipSpatialRefrence, &ipFeatureDataset);      /*2. 导入要素类到要素数据集 */IDatasetContainerPtr ipDatasetContainer = ipFeatureDataset;IDatasetPtr ipInDataset = ipFeatureClass;      //ipFeatureClass为同一工作空间下的要素类;ipDatasetContainer->AddDataset(ipInDataset);/*3. 新建拓扑  */ //相关变量定义ITopologyContainerPtr ipTopologyContainer = ipFeatureDataset; //将数据集存入iTopology--用于创建拓扑ITopologyPtr ipTopology; double ipClusterTolerance;  //返回默认容差ipTopologyContainer->get_DefaultClusterTolerance(&ipClusterTolerance);ipTopologyContainer->CreateTopology(_bstr_t((LPCTSTR)topologyName.utf16()), ipClusterTolerance, -1, L"", &ipTopology);long featureId;dan::DString ipJoinLayerName = layer->layerName();IFeatureClassPtr ipJoinFeatureClass;ipFeatureWorkspace->OpenFeatureClass(_bstr_t((LPCTSTR)ipJoinLayerName.utf16()), &ipJoinFeatureClass);ipJoinFeatureClass->get_FeatureClassID(&featureId);IClassPtr ipClass = ipJoinFeatureClass;ipTopology->AddClass(ipClass,5, 1, 1, VARIANT_FALSE);  //添加参与拓扑的图层  /*3. 添加拓扑规则 */ITopologyRulePtr ipGapTopologyRule(CLSID_TopologyRule);  //空隙ipGapTopologyRule->put_OriginClassID(featureId);ipGapTopologyRule->put_TopologyRuleType(esriTRTAreaNoGaps);   //层内要素是否有空隙;ipGapTopologyRule->put_Name(_bstr_t((LPCTSTR)topologyRuleName.utf16())); //dstring转BSTRipGapTopologyRule->put_AllOriginSubtypes(VARIANT_TRUE);ITopologyRuleContainerPtr ipTopologyRuleContainer = (ITopologyRuleContainerPtr)ipTopology;VARIANT_BOOL checkTopoRule;ipTopologyRuleContainer->get_CanAddRule(ipGapTopologyRule, &checkTopoRule);if (checkTopoRule == VARIANT_TRUE){ipTopologyRuleContainer->AddRule(ipGapTopologyRule);  //添加拓扑规则;}else{return false;}/*4. 验证拓扑 */IGeoDatasetPtr ipCurGeoDataset = ipTopology;IEnvelopePtr ipEnvelope;ipCurGeoDataset->get_Extent(&ipEnvelope);IPolygonPtr ipPolygon(CLSID_Polygon);ISegmentCollectionPtr ipSegmentCollection = ipPolygon;ipSegmentCollection->SetRectangle(ipEnvelope);IPolygonPtr ipCurPolygon;ipTopology->get_DirtyArea(ipPolygon, &ipCurPolygon);if (ipCurPolygon != nullptr){IEnvelopePtr ipAreaToValidate; ipPolygon->get_Envelope(&ipAreaToValidate);IEnvelopePtr ipAreaEffectValidated;ipTopology->ValidateTopology(ipAreaToValidate, &ipAreaEffectValidated);}//验证规则是否实现if (ipSegmentCollection == nullptr){return false;}else{return true;}}else{ITopologyContainerPtr ipTopologyContainer = ipFeatureDataset; //将数据集存入iTopology--用于创建拓扑ITopologyPtr ipTopology;double ipClusterTolerance;  //返回默认容差ipTopologyContainer->get_DefaultClusterTolerance(&ipClusterTolerance);ipTopologyContainer->CreateTopology(_bstr_t((LPCTSTR)topologyName.utf16()), ipClusterTolerance, -1, L"", &ipTopology);//添加参与拓扑的图层：long featureId;dan::DString ipJoinLayerName = layer->layerName();IFeatureClassPtr ipJoinFeatureClass;ipFeatureWorkspace->OpenFeatureClass(_bstr_t((LPCTSTR)ipJoinLayerName.utf16()), &ipJoinFeatureClass);ipJoinFeatureClass->get_FeatureClassID(&featureId);IClassPtr ipClass = ipJoinFeatureClass;ipTopology->AddClass(ipClass, 5, 1, 1, VARIANT_FALSE);  //添加参与拓扑的图层 /* 添加拓扑规则 */ITopologyRulePtr ipGapTopologyRule(CLSID_TopologyRule);ipGapTopologyRule->put_TopologyRuleType(esriTRTAreaNoGaps);   //层内要素不能有空隙ipGapTopologyRule->put_Name(_bstr_t((LPCTSTR)topologyRuleName.utf16())); //dstring转BSTRipGapTopologyRule->put_OriginClassID(featureId);ipGapTopologyRule->put_AllOriginSubtypes(VARIANT_TRUE);ITopologyRuleContainerPtr ipTopologyRuleContainer = ipTopology;VARIANT_BOOL checkTopoRule;ipTopologyRuleContainer->get_CanAddRule(ipGapTopologyRule, &checkTopoRule);if (checkTopoRule == VARIANT_TRUE)                // 判断能否添加该规则{ipTopologyRuleContainer->AddRule(ipGapTopologyRule);  //添加拓扑规则;}else{return false;}/* 验证拓扑 */IGeoDatasetPtr ipCurGeoDataset = ipTopology;IEnvelopePtr ipEnvelope;ipCurGeoDataset->get_Extent(&ipEnvelope);IPolygonPtr ipPolygon(CLSID_Polygon);ISegmentCollectionPtr ipSegmentCollection = ipPolygon;ipSegmentCollection->SetRectangle(ipEnvelope);IPolygonPtr ipCurPolygon;ipTopology->get_DirtyArea(ipPolygon, &ipCurPolygon);if (ipCurPolygon != nullptr){IEnvelopePtr ipAreaToValidate;ipPolygon->get_Envelope(&ipAreaToValidate);IEnvelopePtr ipAreaEffectValidated;ipTopology->ValidateTopology(ipAreaToValidate, &ipAreaEffectValidated);}//验证规则是否实现;if (ipSegmentCollection == nullptr){return false;}else{return true;}}return false;}

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