CPLErr GNMGenericNetwork::CreateGraphLayer(GDALDataset * const pDS)
{
m_poGraphLayer = pDS->CreateLayer(GNM_SYSLAYER_GRAPH, NULL, wkbNone, NULL);
if (NULL == m_poGraphLayer)
{
CPLError( CE_Failure, CPLE_AppDefined, "Creation of '%s' layer failed",
GNM_SYSLAYER_GRAPH );
return CE_Failure;
}
OGRFieldDefn oFieldSrc(GNM_SYSFIELD_SOURCE, GNMGFIDInt);
OGRFieldDefn oFieldDst(GNM_SYSFIELD_TARGET, GNMGFIDInt);
OGRFieldDefn oFieldConnector(GNM_SYSFIELD_CONNECTOR, GNMGFIDInt);
OGRFieldDefn oFieldCost(GNM_SYSFIELD_COST, OFTReal);
OGRFieldDefn oFieldInvCost(GNM_SYSFIELD_INVCOST, OFTReal);
OGRFieldDefn oFieldDir(GNM_SYSFIELD_DIRECTION, OFTInteger);
OGRFieldDefn oFieldBlock(GNM_SYSFIELD_BLOCKED, OFTInteger);
if(m_poGraphLayer->CreateField(&oFieldSrc) != OGRERR_NONE ||
m_poGraphLayer->CreateField(&oFieldDst) != OGRERR_NONE ||
m_poGraphLayer->CreateField(&oFieldConnector) != OGRERR_NONE ||
m_poGraphLayer->CreateField(&oFieldCost) != OGRERR_NONE ||
m_poGraphLayer->CreateField(&oFieldInvCost) != OGRERR_NONE ||
m_poGraphLayer->CreateField(&oFieldDir) != OGRERR_NONE ||
m_poGraphLayer->CreateField(&oFieldBlock) != OGRERR_NONE)
{
CPLError( CE_Failure, CPLE_AppDefined, "Creation of layer '%s' fields failed",
GNM_SYSLAYER_GRAPH );
return CE_Failure;
}
return CE_None;
}
OGRLayer *GNMDatabaseNetwork::ICreateLayer(const char *pszName,
CPL_UNUSED OGRSpatialReference *poSpatialRef,
OGRwkbGeometryType eGType, char **papszOptions)
{
//check if layer with such name exist
for(int i = 0; i < GetLayerCount(); ++i)
{
OGRLayer* pLayer = GetLayer(i);
if(NULL == pLayer)
continue;
if(EQUAL(pLayer->GetName(), pszName))
{
CPLError( CE_Failure, CPLE_IllegalArg,
"The network layer '%s' already exist.", pszName );
return NULL;
}
}
OGRSpatialReference oSpaRef(m_soSRS);
OGRLayer *poLayer = m_poDS->CreateLayer( pszName, &oSpaRef, eGType, papszOptions );
if( poLayer == NULL )
{
CPLError( CE_Failure, CPLE_FileIO, "Layer creation failed." );
return NULL;
}
OGRFieldDefn oField( GNM_SYSFIELD_GFID, GNMGFIDInt );
if( poLayer->CreateField( &oField ) != OGRERR_NONE )
{
CPLError( CE_Failure, CPLE_FileIO, "Creating global identificator field failed." );
return NULL;
}
OGRFieldDefn oFieldBlock(GNM_SYSFIELD_BLOCKED, OFTInteger);
if( poLayer->CreateField( &oFieldBlock ) != OGRERR_NONE )
{
CPLError( CE_Failure, CPLE_FileIO, "Creating is blocking field failed." );
return NULL;
}
GNMGenericLayer* pGNMLayer = new GNMGenericLayer(poLayer, this);
m_apoLayers.push_back(pGNMLayer);
return pGNMLayer;
}
OGRLayer *GNMFileNetwork::ICreateLayer(const char *pszName,
CPL_UNUSED OGRSpatialReference *poSpatialRef,
OGRwkbGeometryType eGType, char **papszOptions)
{
if(NULL == m_poLayerDriver)
{
CPLError( CE_Failure, CPLE_AppDefined,
"The network storage format driver is not defined." );
return NULL;
}
//check if layer with such name exist
for(int i = 0; i < GetLayerCount(); ++i)
{
OGRLayer* pLayer = GetLayer(i);
if(NULL == pLayer)
continue;
if(EQUAL(pLayer->GetName(), pszName))
{
CPLError( CE_Failure, CPLE_IllegalArg,
"The network layer '%s' already exist.", pszName );
return NULL;
}
}
//form path
const char* pszExt = m_poLayerDriver->GetMetadataItem(GDAL_DMD_EXTENSION);
CPLString soPath = CPLFormFilename(m_soNetworkFullName, pszName ,pszExt);
GDALDataset *poDS = m_poLayerDriver->Create( soPath, 0, 0, 0, GDT_Unknown,
papszOptions );
if( poDS == NULL )
{
CPLError( CE_Failure, CPLE_FileIO, "Creation of output file failed." );
return NULL;
}
OGRSpatialReference oSpaRef(m_soSRS);
OGRLayer *poLayer = poDS->CreateLayer( pszName, &oSpaRef, eGType, papszOptions );
if( poLayer == NULL )
{
CPLError( CE_Failure, CPLE_FileIO, "Layer creation failed." );
GDALClose(poDS);
return NULL;
}
OGRFieldDefn oField( GNM_SYSFIELD_GFID, GNMGFIDInt );
if( poLayer->CreateField( &oField ) != OGRERR_NONE )
{
CPLError( CE_Failure, CPLE_FileIO, "Creating global identificator field failed." );
GDALClose(poDS);
return NULL;
}
OGRFieldDefn oFieldBlock(GNM_SYSFIELD_BLOCKED, OFTInteger);
if( poLayer->CreateField( &oFieldBlock ) != OGRERR_NONE )
{
CPLError( CE_Failure, CPLE_FileIO, "Creating is blocking field failed." );
GDALClose(poDS);
return NULL;
}
GNMGenericLayer* pGNMLayer = new GNMGenericLayer(poLayer, this);
m_apoLayers.push_back(pGNMLayer);
m_mpLayerDatasetMap[pGNMLayer] = poDS;
return pGNMLayer;
}
