C++ (Cpp) LoadMetadataLayer Examples

Example #1

File: gnmdbnetwork.cpp Project: ryandavid/rotobox

CPLErr GNMDatabaseNetwork::Open(GDALOpenInfo *poOpenInfo)
{
    FormName(poOpenInfo->pszFilename, poOpenInfo->papszOpenOptions);

    if(CSLFindName(poOpenInfo->papszOpenOptions, "LIST_ALL_TABLES") == -1)
        poOpenInfo->papszOpenOptions = CSLAddNameValue(
                    poOpenInfo->papszOpenOptions, "LIST_ALL_TABLES", "YES");

    m_poDS = (GDALDataset*) GDALOpenEx( m_soNetworkFullName, GDAL_OF_VECTOR |
                     GDAL_OF_UPDATE, NULL, NULL, poOpenInfo->papszOpenOptions );

    if( NULL == m_poDS )
    {
    CPLError( CE_Failure, CPLE_OpenFailed, "Open '%s' failed",
              m_soNetworkFullName.c_str() );
    return CE_Failure;
    }

    // There should be only one schema so no schema name can be in table name
    if(LoadMetadataLayer(m_poDS) != CE_None)
    {
        return CE_Failure;
    }

    if(LoadGraphLayer(m_poDS) != CE_None)
    {
        return CE_Failure;
    }

    if(LoadFeaturesLayer(m_poDS) != CE_None)
    {
        return CE_Failure;
    }

    return CE_None;
}

Example #2

File: gnmfilenetwork.cpp Project: garnertb/gdal

CPLErr GNMFileNetwork::Open(GDALOpenInfo *poOpenInfo)
{
    m_soNetworkFullName = poOpenInfo->pszFilename;
    char **papszFiles = CPLReadDir( m_soNetworkFullName );
    if( CSLCount(papszFiles) == 0 )
    {
        CPLError( CE_Failure, CPLE_OpenFailed, "Open '%s' file failed",
                  m_soNetworkFullName.c_str() );
        return CE_Failure;
    }

    // search for metadata file
    CPLString soMetadatafile;
    for( int i = 0; papszFiles[i] != NULL; i++ )
    {
        if( EQUAL(papszFiles[i],".") || EQUAL(papszFiles[i],"..") )
            continue;

        if( EQUAL(CPLGetBasename(papszFiles[i]), GNM_SYSLAYER_META) )
        {
            soMetadatafile = CPLFormFilename(m_soNetworkFullName, papszFiles[i],
                                             NULL);
            break;
        }
    }

    CSLDestroy( papszFiles );

    m_pMetadataDS = (GDALDataset*) GDALOpenEx( soMetadatafile, GDAL_OF_VECTOR |
                                               GDAL_OF_UPDATE, NULL, NULL, NULL );
    if( NULL == m_pMetadataDS )
    {
        CPLError( CE_Failure, CPLE_OpenFailed, "Open '%s' file failed",
                  m_soNetworkFullName.c_str() );
        return CE_Failure;
    }

    if(LoadMetadataLayer(m_pMetadataDS) != CE_None)
    {
        return CE_Failure;
    }

    m_poLayerDriver = m_pMetadataDS->GetDriver();
    const char* pszExt = CPLGetExtension(soMetadatafile);

    CPLString soGraphfile = CPLFormFilename(m_soNetworkFullName,
                                            GNM_SYSLAYER_GRAPH, pszExt);
    m_pGraphDS = (GDALDataset*) GDALOpenEx( soGraphfile, GDAL_OF_VECTOR |
                                            GDAL_OF_UPDATE, NULL, NULL, NULL );
    if( NULL == m_pGraphDS )
    {
        CPLError( CE_Failure, CPLE_OpenFailed, "Open '%s' file failed",
                  m_soNetworkFullName.c_str() );
        return CE_Failure;
    }

    if(LoadGraphLayer(m_pGraphDS) != CE_None)
    {
        return CE_Failure;
    }

    CPLString soFeaturesfile = CPLFormFilename(m_soNetworkFullName,
                                            GNM_SYSLAYER_FEATURES, pszExt);
    m_pFeaturesDS = (GDALDataset*) GDALOpenEx( soFeaturesfile, GDAL_OF_VECTOR |
                                               GDAL_OF_UPDATE, NULL, NULL, NULL );
    if( NULL == m_pFeaturesDS )
    {
        CPLError( CE_Failure, CPLE_OpenFailed, "Open '%s' file failed",
                  m_soNetworkFullName.c_str() );
        return CE_Failure;
    }

    if(LoadFeaturesLayer(m_pFeaturesDS) != CE_None)
    {
        return CE_Failure;
    }

    return CE_None;
}