OGRErr AODataSource::DeleteLayer( int iLayer )
{
if( iLayer < 0 || iLayer >= static_cast<int>(m_layers.size()) )
return OGRERR_FAILURE;
// Fetch ArObject Table before deleting OGR layer object
ITablePtr ipTable;
m_layers[iLayer]->GetTable(&ipTable);
std::string name = m_layers[iLayer]->GetLayerDefn()->GetName();
// delete OGR layer
delete m_layers[iLayer];
m_layers.erase(m_layers.begin() + iLayer);
IDatasetPtr ipDataset = ipTable;
HRESULT hr;
if (FAILED(hr = ipDataset->Delete()))
{
CPLError( CE_Warning, CPLE_AppDefined, "%s was not deleted however it has been closed", name.c_str());
AOErr(hr, "Failed deleting dataset");
return OGRERR_FAILURE;
}
else
return OGRERR_NONE;
}
//////////////////////////////////////////////////////////////////////////
//简要描述 : 写要素类到CAD文件
//输入参数 :
//返 回 值 :
//
//
//修改日志 :
//////////////////////////////////////////////////////////////////////////
STDMETHODIMP CDwgWriter::FeatureClass2Dwgfile(IFeatureClass* pFtCls)
{
AFX_MANAGE_STATE(AfxGetStaticModuleState());
// TODO: 在此添加实现代码
if (pFtCls == NULL) return S_FALSE;
//m_pgrsDlg.Show();
CString sLog;
CString sFtClsName;
CComBSTR bsFtClsName;
IDatasetPtr pDataset = pFtCls;
if (pDataset != NULL)
{
pDataset->get_Name(&bsFtClsName);
}
else
{
pFtCls->get_AliasName(&bsFtClsName);
}
sFtClsName = bsFtClsName;
int pos = sFtClsName.ReverseFind('.');
if (pos > 0)
{
sFtClsName = sFtClsName.Right(sFtClsName.GetLength() - pos - 1);
}
try
{
if (m_XDataCfgs.GetCount() == 0) //没有扩展属性
{
m_dwgWriter.FeatureClass2Dwgfile(pFtCls, NULL);
}
else
{
XDataAttrLists* pXDataAttrLists = NULL;
m_XDataCfgs.Lookup(sFtClsName, pXDataAttrLists);
m_dwgWriter.FeatureClass2Dwgfile(pFtCls, pXDataAttrLists);
}
}
catch (...)
{
sLog = sFtClsName + "图层写入到CAD文件时出错。";
m_dwgWriter.WriteLog(sLog);
m_pgrsDlg.Hide();
return S_FALSE;
}
//m_pgrsDlg.Hide();
return S_OK;
}
bool AOLayer::Initialize(ITable* pTable)
{
HRESULT hr;
m_ipTable = pTable;
CComBSTR temp;
IDatasetPtr ipDataset = m_ipTable;
if (FAILED(hr = ipDataset->get_Name(&temp)))
return false;
m_pFeatureDefn = new OGRFeatureDefn(CW2A(temp)); //Should I "new" an OGR smart pointer - sample says so, but it doesn't seem right
//as long as we use the same compiler & settings in both the ogr build and this
//driver, we should be OK
m_pFeatureDefn->Reference();
IFeatureClassPtr ipFC = m_ipTable;
VARIANT_BOOL hasOID = VARIANT_FALSE;
ipFC->get_HasOID(&hasOID);
if (hasOID == VARIANT_TRUE)
{
ipFC->get_OIDFieldName(&temp);
m_strOIDFieldName = CW2A(temp);
}
if (FAILED(hr = ipFC->get_ShapeFieldName(&temp)))
return AOErr(hr, "No shape field found!");
m_strShapeFieldName = CW2A(temp);
IFieldsPtr ipFields;
if (FAILED(hr = ipFC->get_Fields(&ipFields)))
return AOErr(hr, "Fields not found!");
long shapeIndex = -1;
if (FAILED(hr = ipFields->FindField(temp, &shapeIndex)))
return AOErr(hr, "Shape field not found!");
IFieldPtr ipShapeField;
if (FAILED(hr = ipFields->get_Field(shapeIndex, &ipShapeField)))
return false;
// Use GeometryDef to set OGR shapetype and Spatial Reference information
//
IGeometryDefPtr ipGeoDef;
if (FAILED(hr = ipShapeField->get_GeometryDef(&ipGeoDef)))
return false;
OGRwkbGeometryType ogrGeoType;
if (!AOToOGRGeometry(ipGeoDef, &ogrGeoType))
return false;
m_pFeatureDefn->SetGeomType(ogrGeoType);
if (wkbFlatten(ogrGeoType) == wkbMultiLineString || wkbFlatten(ogrGeoType) == wkbMultiPoint)
m_forceMulti = true;
// Mapping of Spatial Reference will be passive about errors
// (it is possible we won't be able to map some ESRI-specific projections)
esriGeometry::ISpatialReferencePtr ipSR = NULL;
if (FAILED(hr = ipGeoDef->get_SpatialReference(&ipSR)))
{
AOErr(hr, "Failed Fetching ESRI spatial reference");
}
else
{
if (!AOToOGRSpatialReference(ipSR, &m_pSRS))
{
//report error, but be passive about it
CPLError( CE_Warning, CPLE_AppDefined, "Failed Mapping ESRI Spatial Reference");
}
}
// Map fields
//
return AOToOGRFields(ipFields, m_pFeatureDefn, m_OGRFieldToESRIField);
}