C++ CPLGetConfigOption函数代码示例

OGRErr FGdbDriver::RollbackTransaction(OGRDataSource*& poDSInOut, int& bOutHasReopenedDS)
{
    CPLMutexHolderOptionalLockD(hMutex);

    bOutHasReopenedDS = FALSE;

    OGRMutexedDataSource* poMutexedDS = (OGRMutexedDataSource*)poDSInOut;
    FGdbDataSource* poDS = (FGdbDataSource* )poMutexedDS->GetBaseDataSource();
    FGdbDatabaseConnection* pConnection = poDS->GetConnection();
    if( !pConnection->IsLocked() )
    {
        CPLError(CE_Failure, CPLE_NotSupported,
                 "No transaction in progress");
        return OGRERR_FAILURE;
    }

    bOutHasReopenedDS = TRUE;

    CPLString osName(poMutexedDS->GetName());
    CPLString osNameOri(osName);
    if( osName[osName.size()-1] == '/' || osName[osName.size()-1] == '\\' )
        osName.resize(osName.size()-1);

    //int bPerLayerCopyingForTransaction = poDS->HasPerLayerCopyingForTransaction();

    pConnection->m_nRefCount ++;
    delete poDSInOut;
    poDSInOut = NULL;
    poMutexedDS = NULL;
    poDS = NULL;

    pConnection->CloseGeodatabase();

    CPLString osEditedName(osName);
    osEditedName += ".ogredited";

    OGRErr eErr = OGRERR_NONE;
    if( EQUAL(CPLGetConfigOption("FGDB_SIMUL_FAIL", ""), "CASE1") || 
        CPLUnlinkTree(osEditedName) != 0 )
    {
        CPLError(CE_Warning, CPLE_AppDefined,
                 "Cannot remove %s. Manual cleanup required", osEditedName.c_str());
        eErr = OGRERR_FAILURE;
    }

    pConnection->m_pGeodatabase = new Geodatabase;
    long hr = ::OpenGeodatabase(StringToWString(osName), *(pConnection->m_pGeodatabase));
    if (EQUAL(CPLGetConfigOption("FGDB_SIMUL_FAIL", ""), "CASE2") ||
        FAILED(hr))
    {
        delete pConnection->m_pGeodatabase;
        pConnection->m_pGeodatabase = NULL;
        pConnection->SetLocked(FALSE);
        Release(osName);
        GDBErr(hr, "Failed to re-open Geodatabase. Dataset should be closed");
        return OGRERR_FAILURE;
    }

    FGdbDataSource* pDS = new FGdbDataSource(this, pConnection);
    pDS->Open(osNameOri, TRUE, NULL);
    //pDS->SetPerLayerCopyingForTransaction(bPerLayerCopyingForTransaction);
    poDSInOut = new OGRMutexedDataSource(pDS, TRUE, hMutex, TRUE);

    pConnection->SetLocked(FALSE);

    return eErr;
}

CPLErr
GDALDefaultOverviews::BuildOverviews(
    const char * pszBasename,
    const char * pszResampling,
    int nOverviews, int * panOverviewList,
    int nBands, int * panBandList,
    GDALProgressFunc pfnProgress, void * pProgressData)

{
    if( pfnProgress == nullptr )
        pfnProgress = GDALDummyProgress;

    if( nOverviews == 0 )
        return CleanOverviews();

/* -------------------------------------------------------------------- */
/*      If we don't already have an overview file, we need to decide    */
/*      what format to use.                                             */
/* -------------------------------------------------------------------- */
    if( poODS == nullptr )
    {
        bOvrIsAux = CPLTestBool(CPLGetConfigOption( "USE_RRD", "NO" ));
        if( bOvrIsAux )
        {
            osOvrFilename = CPLResetExtension(poDS->GetDescription(),"aux");

            VSIStatBufL sStatBuf;
            if( VSIStatExL( osOvrFilename, &sStatBuf,
                            VSI_STAT_EXISTS_FLAG ) == 0 )
                osOvrFilename.Printf( "%s.aux", poDS->GetDescription() );
        }
    }
/* -------------------------------------------------------------------- */
/*      If we already have the overviews open, but they are             */
/*      read-only, then try and reopen them read-write.                 */
/* -------------------------------------------------------------------- */
    else if( poODS->GetAccess() == GA_ReadOnly )
    {
        GDALClose( poODS );
        poODS = GDALDataset::Open(
            osOvrFilename, GDAL_OF_RASTER | GDAL_OF_UPDATE);
        if( poODS == nullptr )
            return CE_Failure;
    }

/* -------------------------------------------------------------------- */
/*      Our TIFF overview support currently only works safely if all    */
/*      bands are handled at the same time.                             */
/* -------------------------------------------------------------------- */
    if( !bOvrIsAux && nBands != poDS->GetRasterCount() )
    {
        CPLError( CE_Failure, CPLE_NotSupported,
                  "Generation of overviews in external TIFF currently only "
                  "supported when operating on all bands.  "
                  "Operation failed." );
        return CE_Failure;
    }

/* -------------------------------------------------------------------- */
/*      If a basename is provided, use it to override the internal      */
/*      overview filename.                                              */
/* -------------------------------------------------------------------- */
    if( pszBasename == nullptr && osOvrFilename.length() == 0  )
        pszBasename = poDS->GetDescription();

    if( pszBasename != nullptr )
    {
        if( bOvrIsAux )
            osOvrFilename.Printf( "%s.aux", pszBasename );
        else
            osOvrFilename.Printf( "%s.ovr", pszBasename );
    }

/* -------------------------------------------------------------------- */
/*      Establish which of the overview levels we already have, and     */
/*      which are new.  We assume that band 1 of the file is            */
/*      representative.                                                 */
/* -------------------------------------------------------------------- */
    GDALRasterBand *poBand = poDS->GetRasterBand( 1 );

    int nNewOverviews = 0;
    int *panNewOverviewList = static_cast<int *>(
        CPLCalloc(sizeof(int), nOverviews) );
    double dfAreaNewOverviews = 0;
    double dfAreaRefreshedOverviews = 0;
    std::vector<bool> abValidLevel(nOverviews, true);
    std::vector<bool> abRequireRefresh(nOverviews, false);
    bool bFoundSinglePixelOverview = false;
    for( int i = 0; i < nOverviews && poBand != nullptr; i++ )
    {
        // If we already have a 1x1 overview and this new one would result
        // in it too, then don't create it.
        if( bFoundSinglePixelOverview &&
            (poBand->GetXSize() + panOverviewList[i] - 1)
                / panOverviewList[i] == 1 &&
            (poBand->GetXSize() + panOverviewList[i] - 1)
                / panOverviewList[i] == 1 )
        {
            abValidLevel[i] = false;
            continue;
//.........这里部分代码省略.........

int S57ClassRegistrar::LoadInfo( const char * pszDirectory, 
                                 const char * pszProfile,
                                 int bReportErr )

{
    FILE        *fp;
    char        szTargetFile[1024];

    if( pszDirectory == NULL )
        pszDirectory = CPLGetConfigOption("S57_CSV",NULL);

/* ==================================================================== */
/*      Read the s57objectclasses file.                                 */
/* ==================================================================== */
    if( pszProfile == NULL )
        pszProfile = CPLGetConfigOption( "S57_PROFILE", "" );
    
    if( EQUAL(pszProfile, "Additional_Military_Layers") )
    {
       sprintf( szTargetFile, "s57objectclasses_%s.csv", "aml" );
    }
    else if ( EQUAL(pszProfile, "Inland_Waterways") )
    {
       sprintf( szTargetFile, "s57objectclasses_%s.csv", "iw" );
    }
    else if( strlen(pszProfile) > 0 )
    {
       sprintf( szTargetFile, "s57objectclasses_%s.csv", pszProfile );
    }
    else
    {
       strcpy( szTargetFile, "s57objectclasses.csv" );
    }

    if( !FindFile( szTargetFile, pszDirectory, bReportErr, &fp ) )
        return FALSE;

/* -------------------------------------------------------------------- */
/*      Skip the line defining the column titles.                       */
/* -------------------------------------------------------------------- */
    const char * pszLine = ReadLine( fp );

    if( !EQUAL(pszLine,
               "\"Code\",\"ObjectClass\",\"Acronym\",\"Attribute_A\","
               "\"Attribute_B\",\"Attribute_C\",\"Class\",\"Primitives\"" ) )
    {
        CPLError( CE_Failure, CPLE_AppDefined,
                  "s57objectclasses columns don't match expected format!\n" );
        return FALSE;
    }

/* -------------------------------------------------------------------- */
/*      Read and form string list.                                      */
/* -------------------------------------------------------------------- */
    
    CSLDestroy( papszClassesInfo );
    papszClassesInfo = (char **) CPLCalloc(sizeof(char *),MAX_CLASSES);

    nClasses = 0;

    while( nClasses < MAX_CLASSES
           && (pszLine = ReadLine(fp)) != NULL )
    {
        papszClassesInfo[nClasses] = CPLStrdup(pszLine);
        if( papszClassesInfo[nClasses] == NULL )
            break;

        nClasses++;
    }

    if( nClasses == MAX_CLASSES )
        CPLError( CE_Warning, CPLE_AppDefined,
                  "MAX_CLASSES exceeded in S57ClassRegistrar::LoadInfo().\n" );

/* -------------------------------------------------------------------- */
/*      Cleanup, and establish state.                                   */
/* -------------------------------------------------------------------- */
    if( fp != NULL )
        VSIFClose( fp );
    iCurrentClass = -1;

    if( nClasses == 0 )
        return FALSE;

/* ==================================================================== */
/*      Read the attributes list.                                       */
/* ==================================================================== */

    if( EQUAL(pszProfile, "Additional_Military_Layers") )
    {
        sprintf( szTargetFile, "s57attributes_%s.csv", "aml" );
    }
    else if ( EQUAL(pszProfile, "Inland_Waterways") )
    {
       sprintf( szTargetFile, "s57attributes_%s.csv", "iw" );
    }
    else if( strlen(pszProfile) > 0 )
    {
       sprintf( szTargetFile, "s57attributes_%s.csv", pszProfile );
    }
//.........这里部分代码省略.........

int OGRVRTDataSource::Initialize( CPLXMLNode *psTree, const char *pszNewName,
                                  int bUpdate )

{
    CPLAssert( nLayers == 0 );

    this->psTree = psTree;

/* -------------------------------------------------------------------- */
/*      Set name, and capture the directory path so we can use it       */
/*      for relative datasources.                                       */
/* -------------------------------------------------------------------- */
    CPLString osVRTDirectory = CPLGetPath( pszNewName );

    pszName = CPLStrdup( pszNewName );

/* -------------------------------------------------------------------- */
/*      Look for the OGRVRTDataSource node, it might be after an        */
/*      <xml> node.                                                     */
/* -------------------------------------------------------------------- */
    CPLXMLNode *psVRTDSXML = CPLGetXMLNode( psTree, "=OGRVRTDataSource" );
    if( psVRTDSXML == NULL )
    {
        CPLError( CE_Failure, CPLE_AppDefined, 
                  "Did not find the <OGRVRTDataSource> node in the root of the document,\n"
                  "this is not really an OGR VRT." );
        return FALSE;
    }

/* -------------------------------------------------------------------- */
/*      Determine if we must proxy layers.                              */
/* -------------------------------------------------------------------- */
    int nOGRVRTLayerCount = CountOGRVRTLayers(psVRTDSXML);

    int nMaxSimultaneouslyOpened = atoi(CPLGetConfigOption("OGR_VRT_MAX_OPENED", "100"));
    if( nMaxSimultaneouslyOpened < 1 )
        nMaxSimultaneouslyOpened = 1;
    if( nOGRVRTLayerCount > nMaxSimultaneouslyOpened )
        poLayerPool = new OGRLayerPool(nMaxSimultaneouslyOpened);

/* -------------------------------------------------------------------- */
/*      Apply any dataset level metadata.                               */
/* -------------------------------------------------------------------- */
    oMDMD.XMLInit( psVRTDSXML, TRUE );

/* -------------------------------------------------------------------- */
/*      Look for layers.                                                */
/* -------------------------------------------------------------------- */
    CPLXMLNode *psLTree;

    for( psLTree=psVRTDSXML->psChild; psLTree != NULL; psLTree=psLTree->psNext )
    {
        if( psLTree->eType != CXT_Element )
            continue;

/* -------------------------------------------------------------------- */
/*      Create the layer object.                                        */
/* -------------------------------------------------------------------- */
        OGRLayer  *poLayer = InstanciateLayer(psLTree, osVRTDirectory, bUpdate);
        if( poLayer == NULL )
            continue;

/* -------------------------------------------------------------------- */
/*      Add layer to data source layer list.                            */
/* -------------------------------------------------------------------- */
        nLayers ++;
        papoLayers = (OGRLayer **)
            CPLRealloc( papoLayers,  sizeof(OGRLayer *) * nLayers );
        papoLayers[nLayers-1] = poLayer;

        paeLayerType = (OGRLayerType*)
            CPLRealloc( paeLayerType,  sizeof(int) * nLayers );
        if( poLayerPool != NULL && EQUAL(psLTree->pszValue,"OGRVRTLayer"))
        {
            paeLayerType[nLayers - 1] = OGR_VRT_PROXIED_LAYER;
        }
        else if( EQUAL(psLTree->pszValue,"OGRVRTLayer") )
        {
            paeLayerType[nLayers - 1] = OGR_VRT_LAYER;
        }
        else
        {
            paeLayerType[nLayers - 1] = OGR_VRT_OTHER_LAYER;
        }
    }

    return TRUE;
}

GDALDataset* ZMapDataset::CreateCopy( const char * pszFilename,
                                      GDALDataset *poSrcDS,
                                      int bStrict,
                                      CPL_UNUSED char ** papszOptions,
                                      GDALProgressFunc pfnProgress,
                                      void * pProgressData )
{
/* -------------------------------------------------------------------- */
/*      Some some rudimentary checks                                    */
/* -------------------------------------------------------------------- */
    int nBands = poSrcDS->GetRasterCount();
    if (nBands == 0)
    {
        CPLError( CE_Failure, CPLE_NotSupported,
                  "ZMap driver does not support source dataset with zero band.\n");
        return NULL;
    }

    if (nBands != 1)
    {
        CPLError( (bStrict) ? CE_Failure : CE_Warning, CPLE_NotSupported,
                  "ZMap driver only uses the first band of the dataset.\n");
        if (bStrict)
            return NULL;
    }

    if( pfnProgress && !pfnProgress( 0.0, NULL, pProgressData ) )
        return NULL;

/* -------------------------------------------------------------------- */
/*      Get source dataset info                                         */
/* -------------------------------------------------------------------- */

    const int nXSize = poSrcDS->GetRasterXSize();
    const int nYSize = poSrcDS->GetRasterYSize();
    if (nXSize == 1 || nYSize == 1)
    {
        return NULL;
    }

    double adfGeoTransform[6];
    poSrcDS->GetGeoTransform(adfGeoTransform);
    if (adfGeoTransform[2] != 0 || adfGeoTransform[4] != 0)
    {
        CPLError( CE_Failure, CPLE_NotSupported,
                  "ZMap driver does not support CreateCopy() from skewed or "
                  "rotated dataset.\n");
        return NULL;
    }

/* -------------------------------------------------------------------- */
/*      Create target file                                              */
/* -------------------------------------------------------------------- */

    VSILFILE* fp = VSIFOpenL(pszFilename, "wb");
    if (fp == NULL)
    {
        CPLError( CE_Failure, CPLE_AppDefined,
                  "Cannot create %s", pszFilename );
        return NULL;
    }

    const int nFieldSize = 20;
    const int nValuesPerLine = 4;
    const int nDecimalCount = 7;

    int bHasNoDataValue = FALSE;
    double dfNoDataValue =
        poSrcDS->GetRasterBand(1)->GetNoDataValue(&bHasNoDataValue);
    if (!bHasNoDataValue)
        dfNoDataValue = 1.e30;

    VSIFPrintfL(fp, "!\n");
    VSIFPrintfL(fp, "! Created by GDAL.\n");
    VSIFPrintfL(fp, "!\n");
    VSIFPrintfL(fp, "@GRID FILE, GRID, %d\n", nValuesPerLine);

    WriteRightJustified(fp, nFieldSize, 10);
    VSIFPrintfL(fp, ",");
    WriteRightJustified(fp, dfNoDataValue, 10);
    VSIFPrintfL(fp, ",");
    WriteRightJustified(fp, "", 10);
    VSIFPrintfL(fp, ",");
    WriteRightJustified(fp, nDecimalCount, 10);
    VSIFPrintfL(fp, ",");
    WriteRightJustified(fp, 1, 10);
    VSIFPrintfL(fp, "\n");

    WriteRightJustified(fp, nYSize, 10);
    VSIFPrintfL(fp, ",");
    WriteRightJustified(fp, nXSize, 10);
    VSIFPrintfL(fp, ",");

    if (CPLTestBool(CPLGetConfigOption("ZMAP_PIXEL_IS_POINT", "FALSE")))
    {
        WriteRightJustified(fp, adfGeoTransform[0] + adfGeoTransform[1] / 2, 14, 7);
        VSIFPrintfL(fp, ",");
        WriteRightJustified(fp, adfGeoTransform[0] + adfGeoTransform[1] * nXSize -
                                adfGeoTransform[1] / 2, 14, 7);
        VSIFPrintfL(fp, ",");
//.........这里部分代码省略.........

/*!
  \brief VFKReaderSQLite constructor
*/
VFKReaderSQLite::VFKReaderSQLite(const char *pszFilename) : VFKReader(pszFilename)
{
    const char *pszDbNameConf;
    CPLString   osDbName;
    CPLString   osCommand;
    VSIStatBufL sStatBufDb, sStatBufVfk;

    /* open tmp SQLite DB (re-use DB file if already exists) */
    pszDbNameConf = CPLGetConfigOption("OGR_VFK_DB_NAME", NULL);
    if (pszDbNameConf) {
	osDbName = pszDbNameConf;
    }
    else {
	osDbName = CPLResetExtension(m_pszFilename, "db");
    }
    size_t nLen = osDbName.length();
    if( nLen > 2048 )
    {
        nLen = 2048;
        osDbName.resize(nLen);
    }
    m_pszDBname = new char [nLen+1];
    std::strncpy(m_pszDBname, osDbName.c_str(), nLen);
    m_pszDBname[nLen] = 0;
    CPLDebug("OGR-VFK", "Using internal DB: %s",
             m_pszDBname);

    if (CPLTestBool(CPLGetConfigOption("OGR_VFK_DB_SPATIAL", "YES")))
	m_bSpatial = TRUE;    /* build geometry from DB */
    else
	m_bSpatial = FALSE;   /* store also geometry in DB */

    m_bNewDb = TRUE;
    if (VSIStatL(osDbName, &sStatBufDb) == 0) {
	if (CPLTestBool(CPLGetConfigOption("OGR_VFK_DB_OVERWRITE", "NO"))) {
	    m_bNewDb = TRUE;     /* overwrite existing DB */
            CPLDebug("OGR-VFK", "Internal DB (%s) already exists and will be overwritten",
                     m_pszDBname);
	    VSIUnlink(osDbName);
        }
        else {
            if (VSIStatL(pszFilename, &sStatBufVfk) == 0 &&
                sStatBufVfk.st_mtime > sStatBufDb.st_mtime) {
                CPLDebug("OGR-VFK",
                         "Found %s but ignoring because it appears\n"
                         "be older than the associated VFK file.",
                         osDbName.c_str());
                m_bNewDb = TRUE;
                VSIUnlink(osDbName);
            }
            else {
                m_bNewDb = FALSE;    /* re-use existing DB */
            }
        }
    }

    /*
    if (m_bNewDb) {
      CPLError(CE_Warning, CPLE_AppDefined,
               "INFO: No internal SQLite DB found. Reading VFK data may take some time...");
    }
    */

    CPLDebug("OGR-VFK", "New DB: %s Spatial: %s",
             m_bNewDb ? "yes" : "no", m_bSpatial ? "yes" : "no");

    char* pszErrMsg;
    if (SQLITE_OK != sqlite3_open(osDbName, &m_poDB)) {
        CPLError(CE_Failure, CPLE_AppDefined,
                 "Creating SQLite DB failed: %s",
                 sqlite3_errmsg(m_poDB));
    }

    if (!m_bNewDb) {
        char** papszResult;
        int nRowCount, nColCount;
        
        /* check if DB is up-to-date datasource */
        pszErrMsg = NULL;
        papszResult = NULL;
        nRowCount = nColCount = 0;
        osCommand.Printf("SELECT * FROM %s LIMIT 1", VFK_DB_TABLE);
        sqlite3_get_table(m_poDB,
                          osCommand.c_str(),
                          &papszResult,
                          &nRowCount, &nColCount, &pszErrMsg);
        sqlite3_free_table(papszResult);
        sqlite3_free(pszErrMsg);
        pszErrMsg = NULL;
        
        if (nColCount != 6) {
            /* it seems that DB is outdated, let's create new DB from
             * scratch */
            if (SQLITE_OK != sqlite3_close(m_poDB)) {
                CPLError(CE_Failure, CPLE_AppDefined,
                         "Closing SQLite DB failed: %s",
                         sqlite3_errmsg(m_poDB));
//.........这里部分代码省略.........

OGRDGNLayer::OGRDGNLayer( const char * pszName, DGNHandle hDGN,
                          int bUpdate )
    
{
    this->hDGN = hDGN;
    this->bUpdate = bUpdate;

/* -------------------------------------------------------------------- */
/*      Work out what link format we are using.                         */
/* -------------------------------------------------------------------- */
    OGRFieldType eLinkFieldType;

    pszLinkFormat = (char *) CPLGetConfigOption( "DGN_LINK_FORMAT", "FIRST" );
    if( EQUAL(pszLinkFormat,"FIRST") )
        eLinkFieldType = OFTInteger;
    else if( EQUAL(pszLinkFormat,"LIST") )
        eLinkFieldType = OFTIntegerList;
    else if( EQUAL(pszLinkFormat,"STRING") )
        eLinkFieldType = OFTString;
    else
    {
        CPLError( CE_Warning, CPLE_AppDefined, 
                  "DGN_LINK_FORMAT=%s, but only FIRST, LIST or STRING supported.",
                  pszLinkFormat );
        pszLinkFormat = (char *) "FIRST";
        eLinkFieldType = OFTInteger;
    }
    pszLinkFormat = CPLStrdup(pszLinkFormat);

/* -------------------------------------------------------------------- */
/*      Create the feature definition.                                  */
/* -------------------------------------------------------------------- */
    poFeatureDefn = new OGRFeatureDefn( pszName );
    poFeatureDefn->Reference();
    
    OGRFieldDefn        oField( "", OFTInteger );

/* -------------------------------------------------------------------- */
/*      Element type                                                    */
/* -------------------------------------------------------------------- */
    oField.SetName( "Type" );
    oField.SetType( OFTInteger );
    oField.SetWidth( 2 );
    oField.SetPrecision( 0 );
    poFeatureDefn->AddFieldDefn( &oField );

/* -------------------------------------------------------------------- */
/*      Level number.                                                   */
/* -------------------------------------------------------------------- */
    oField.SetName( "Level" );
    oField.SetType( OFTInteger );
    oField.SetWidth( 2 );
    oField.SetPrecision( 0 );
    poFeatureDefn->AddFieldDefn( &oField );

/* -------------------------------------------------------------------- */
/*      graphic group                                                   */
/* -------------------------------------------------------------------- */
    oField.SetName( "GraphicGroup" );
    oField.SetType( OFTInteger );
    oField.SetWidth( 4 );
    oField.SetPrecision( 0 );
    poFeatureDefn->AddFieldDefn( &oField );

/* -------------------------------------------------------------------- */
/*      ColorIndex                                                      */
/* -------------------------------------------------------------------- */
    oField.SetName( "ColorIndex" );
    oField.SetType( OFTInteger );
    oField.SetWidth( 3 );
    oField.SetPrecision( 0 );
    poFeatureDefn->AddFieldDefn( &oField );

/* -------------------------------------------------------------------- */
/*      Weight                                                          */
/* -------------------------------------------------------------------- */
    oField.SetName( "Weight" );
    oField.SetType( OFTInteger );
    oField.SetWidth( 2 );
    oField.SetPrecision( 0 );
    poFeatureDefn->AddFieldDefn( &oField );

/* -------------------------------------------------------------------- */
/*      Style                                                           */
/* -------------------------------------------------------------------- */
    oField.SetName( "Style" );
    oField.SetType( OFTInteger );
    oField.SetWidth( 1 );
    oField.SetPrecision( 0 );
    poFeatureDefn->AddFieldDefn( &oField );

/* -------------------------------------------------------------------- */
/*      EntityNum                                                       */
/* -------------------------------------------------------------------- */
    oField.SetName( "EntityNum" );
    oField.SetType( eLinkFieldType );
    oField.SetWidth( 0 );
    oField.SetPrecision( 0 );
    poFeatureDefn->AddFieldDefn( &oField );

//.........这里部分代码省略.........

OGRDataSourceH RasterliteCreateTables(OGRDataSourceH hDS, const char* pszTableName,
                                      int nSRSId, int bWipeExistingData)
{
    CPLString osSQL;
    
    CPLString osOldVal = CPLGetConfigOption("SQLITE_LIST_ALL_TABLES", "FALSE");
    CPLString osDBName = OGR_DS_GetName(hDS);
    
    CPLString osRasterLayer;
    osRasterLayer.Printf("%s_rasters", pszTableName);
    
    CPLString osMetatadataLayer;
    osMetatadataLayer.Printf("%s_metadata", pszTableName);

    OGRLayerH hLyr;

    if (OGR_DS_GetLayerByName(hDS, osRasterLayer.c_str()) == NULL)
    {
/* -------------------------------------------------------------------- */
/*      The table don't exist. Create them                              */
/* -------------------------------------------------------------------- */

        /* Create _rasters table */
        osSQL.Printf   ("CREATE TABLE \"%s\" ("
                        "id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,"
                        "raster BLOB NOT NULL)", osRasterLayer.c_str());
        OGR_DS_ExecuteSQL(hDS, osSQL.c_str(), NULL, NULL);
            
        /* Create _metadata table */
        osSQL.Printf   ("CREATE TABLE \"%s\" ("
                        "id INTEGER NOT NULL PRIMARY KEY,"
                        "source_name TEXT NOT NULL,"
                        "tile_id INTEGER NOT NULL,"
                        "width INTEGER NOT NULL,"
                        "height INTEGER NOT NULL,"
                        "pixel_x_size DOUBLE NOT NULL,"
                        "pixel_y_size DOUBLE NOT NULL)",
                        osMetatadataLayer.c_str());
        OGR_DS_ExecuteSQL(hDS, osSQL.c_str(), NULL, NULL);

        /* Add geometry column to _metadata table */
        osSQL.Printf("SELECT AddGeometryColumn('%s', 'geometry', %d, 'POLYGON', 2)",
                      osMetatadataLayer.c_str(), nSRSId);
        if ((hLyr = OGR_DS_ExecuteSQL(hDS, osSQL.c_str(), NULL, NULL)) == NULL)
        {
            CPLError(CE_Failure, CPLE_AppDefined,
                     "Check that the OGR SQLite driver has Spatialite support");
            OGRReleaseDataSource(hDS);
            return NULL;
        }
        OGR_DS_ReleaseResultSet(hDS, hLyr);
                
        /* Create spatial index on _metadata table */
        osSQL.Printf("SELECT CreateSpatialIndex('%s', 'geometry')",
                      osMetatadataLayer.c_str());
        if ((hLyr = OGR_DS_ExecuteSQL(hDS, osSQL.c_str(), NULL, NULL)) == NULL)
        {
            OGRReleaseDataSource(hDS);
            return NULL;
        }
        OGR_DS_ReleaseResultSet(hDS, hLyr);
        
        /* Re-open the DB to take into account the new tables*/
        OGRReleaseDataSource(hDS);
        
        CPLSetThreadLocalConfigOption("SQLITE_LIST_ALL_TABLES", "TRUE");
        hDS = OGROpen(osDBName.c_str(), TRUE, NULL);
        CPLSetThreadLocalConfigOption("SQLITE_LIST_ALL_TABLES", osOldVal.c_str());
    }
    else
    {
        /* Check that the existing SRS is consistent with the one of the new */
        /* data to be inserted */
        osSQL.Printf("SELECT srid FROM geometry_columns WHERE f_table_name = '%s'",
                     osMetatadataLayer.c_str());
        hLyr = OGR_DS_ExecuteSQL(hDS, osSQL.c_str(), NULL, NULL);
        if (hLyr)
        {
            int nExistingSRID = -1;
            OGRFeatureH hFeat = OGR_L_GetNextFeature(hLyr);
            if (hFeat)
            {
                nExistingSRID = OGR_F_GetFieldAsInteger(hFeat, 0);
                OGR_F_Destroy(hFeat);
            }
            OGR_DS_ReleaseResultSet(hDS, hLyr);

            if (nExistingSRID != nSRSId)
            {
                if (bWipeExistingData)
                {
                    osSQL.Printf("UPDATE geometry_columns SET srid = %d "
                                 "WHERE f_table_name = \"%s\"",
                                 nSRSId, osMetatadataLayer.c_str());
                    OGR_DS_ExecuteSQL(hDS, osSQL.c_str(), NULL, NULL);
        
                    /* Re-open the DB to take into account the change of SRS */
                    OGRReleaseDataSource(hDS);
                    
                    CPLSetThreadLocalConfigOption("SQLITE_LIST_ALL_TABLES", "TRUE");
//.........这里部分代码省略.........

//.........这里部分代码省略.........
    {
        if (bExists)
        {
            CPLError(CE_Failure, CPLE_AppDefined,
                     "Database already exists. Explicit table name must be specified");
            return NULL;
        }
        osTableName = CPLGetBasename(osDBName.c_str());
    }    
    
    CPLString osRasterLayer;
    osRasterLayer.Printf("%s_rasters", osTableName.c_str());
    
    CPLString osMetatadataLayer;
    osMetatadataLayer.Printf("%s_metadata", osTableName.c_str());

/* -------------------------------------------------------------------- */
/*      Create or open the SQLite DB                                    */
/* -------------------------------------------------------------------- */
    
    if (OGRGetDriverCount() == 0)
        OGRRegisterAll();
        
    OGRSFDriverH hSQLiteDriver = OGRGetDriverByName("SQLite");
    if (hSQLiteDriver == NULL)
    {
        CPLError(CE_Failure, CPLE_AppDefined, "Cannot load OGR SQLite driver");
        return NULL;
    }   
    
    OGRDataSourceH hDS;
    
    CPLString osOldVal =
        CPLGetConfigOption("SQLITE_LIST_ALL_TABLES", "FALSE");
    CPLSetThreadLocalConfigOption("SQLITE_LIST_ALL_TABLES", "TRUE");
    if (!bExists)
    {
        char** papszOGROptions = CSLAddString(NULL, "SPATIALITE=YES");
        hDS = OGR_Dr_CreateDataSource(hSQLiteDriver,
                                      osDBName.c_str(), papszOGROptions);
        CSLDestroy(papszOGROptions);
    }
    else
    {
        hDS = OGROpen(osDBName.c_str(), TRUE, NULL);
    }
    CPLSetThreadLocalConfigOption("SQLITE_LIST_ALL_TABLES", osOldVal.c_str());
    
    if (hDS == NULL)
    {
        CPLError(CE_Failure, CPLE_AppDefined,
                 "Cannot load or create SQLite database");
        return NULL;
    }

    CPLString osSQL;
    
/* -------------------------------------------------------------------- */
/*      Get the SRID for the SRS                                        */
/* -------------------------------------------------------------------- */
    int nSRSId = RasterliteInsertSRID(hDS, poSrcDS->GetProjectionRef());

/* -------------------------------------------------------------------- */
/*      Create or wipe existing tables                                  */
/* -------------------------------------------------------------------- */
    int bWipeExistingData =

bool OGRVRTDataSource::Initialize( CPLXMLNode *psTreeIn, const char *pszNewName,
                                   int bUpdate )

{
    CPLAssert(nLayers == 0);

    AddForbiddenNames(pszNewName);

    psTree = psTreeIn;

    // Set name, and capture the directory path so we can use it
    // for relative datasources.
    CPLString osVRTDirectory = CPLGetPath(pszNewName);

    pszName = CPLStrdup(pszNewName);

    // Look for the OGRVRTDataSource node, it might be after an <xml> node.
    CPLXMLNode *psVRTDSXML = CPLGetXMLNode(psTree, "=OGRVRTDataSource");
    if( psVRTDSXML == nullptr )
    {
        CPLError(CE_Failure, CPLE_AppDefined,
                 "Did not find the <OGRVRTDataSource> node in the root of the "
                 "document, this is not really an OGR VRT.");
        return false;
    }

    // Determine if we must proxy layers.
    const int nOGRVRTLayerCount = CountOGRVRTLayers(psVRTDSXML);

    const int nMaxSimultaneouslyOpened =
      std::max(atoi(CPLGetConfigOption("OGR_VRT_MAX_OPENED", "100")), 1);
    if( nOGRVRTLayerCount > nMaxSimultaneouslyOpened )
        poLayerPool = new OGRLayerPool(nMaxSimultaneouslyOpened);

    // Apply any dataset level metadata.
    oMDMD.XMLInit(psVRTDSXML, TRUE);

    // Look for layers.
    for( CPLXMLNode *psLTree = psVRTDSXML->psChild; psLTree != nullptr;
         psLTree = psLTree->psNext )
    {
        if( psLTree->eType != CXT_Element )
            continue;

        // Create the layer object.
        OGRLayer *poLayer = InstantiateLayer(psLTree, osVRTDirectory, bUpdate);
        if( poLayer == nullptr )
            continue;

        // Add layer to data source layer list.
        nLayers++;
        papoLayers = static_cast<OGRLayer **>(
            CPLRealloc(papoLayers, sizeof(OGRLayer *) * nLayers));
        papoLayers[nLayers - 1] = poLayer;

        paeLayerType = static_cast<OGRLayerType *>(
            CPLRealloc(paeLayerType, sizeof(int) * nLayers));
        if( poLayerPool != nullptr && EQUAL(psLTree->pszValue, "OGRVRTLayer") )
        {
            paeLayerType[nLayers - 1] = OGR_VRT_PROXIED_LAYER;
        }
        else if( EQUAL(psLTree->pszValue, "OGRVRTLayer") )
        {
            paeLayerType[nLayers - 1] = OGR_VRT_LAYER;
        }
        else
        {
            paeLayerType[nLayers - 1] = OGR_VRT_OTHER_LAYER;
        }
    }

    return true;
}

OGRDataSource *OGRVRTDriver::Open( const char * pszFilename,
                                   int bUpdate )
{
    OGRVRTDataSource     *poDS;
    char *pszXML = NULL;

/* -------------------------------------------------------------------- */
/*      Are we being passed the XML definition directly?                */
/*      Skip any leading spaces/blanks.                                 */
/* -------------------------------------------------------------------- */
    const char *pszTestXML = pszFilename;
    while( *pszTestXML != '\0' && isspace( (unsigned char)*pszTestXML ) )
        pszTestXML++;

    if( EQUALN(pszTestXML,"<OGRVRTDataSource>",18) )
    {
        pszXML = CPLStrdup(pszTestXML);
    }

/* -------------------------------------------------------------------- */
/*      Open file and check if it contains appropriate XML.             */
/* -------------------------------------------------------------------- */
    else
    {
        VSILFILE *fp;
        char achHeader[512];

        fp = VSIFOpenL( pszFilename, "rb" );

        if( fp == NULL )
            return NULL;

        memset( achHeader, 0, sizeof(achHeader) );
        VSIFReadL( achHeader, 1, sizeof(achHeader)-1, fp );

        if( strstr(achHeader,"<OGRVRTDataSource") == NULL )
        {
            VSIFCloseL( fp );
            return NULL;
        }

        VSIStatBufL sStatBuf;
        if ( VSIStatL( pszFilename, &sStatBuf ) != 0 ||
             sStatBuf.st_size > 1024 * 1024 )
        {
            CPLDebug( "VRT", "Unreasonable long file, not likely really VRT" );
            VSIFCloseL( fp );
            return NULL;
        }

/* -------------------------------------------------------------------- */
/*      It is the right file, now load the full XML definition.         */
/* -------------------------------------------------------------------- */
        int nLen = (int) sStatBuf.st_size;

        VSIFSeekL( fp, 0, SEEK_SET );

        pszXML = (char *) VSIMalloc(nLen+1);
        if (pszXML == NULL)
        {
            VSIFCloseL( fp );
            return NULL;
        }
        pszXML[nLen] = '\0';
        if( ((int) VSIFReadL( pszXML, 1, nLen, fp )) != nLen )
        {
            CPLFree( pszXML );
            VSIFCloseL( fp );

            return NULL;
        }
        VSIFCloseL( fp );
    }

/* -------------------------------------------------------------------- */
/*      Parse the XML.                                                  */
/* -------------------------------------------------------------------- */
    CPLXMLNode *psTree = CPLParseXMLString( pszXML );

    if( psTree == NULL )
    {
        CPLFree( pszXML );
        return NULL;
    }

/* -------------------------------------------------------------------- */
/*      XML Validation.                                                 */
/* -------------------------------------------------------------------- */
    if( CSLTestBoolean(CPLGetConfigOption("GDAL_XML_VALIDATION", "YES")) )
    {
        const char* pszXSD = CPLFindFile( "gdal", "ogrvrt.xsd" );
        if( pszXSD != NULL )
        {
            std::vector<CPLString> aosErrors;
            CPLPushErrorHandlerEx(OGRVRTErrorHandler, &aosErrors);
            int bRet = CPLValidateXML(pszXML, pszXSD, NULL);
            CPLPopErrorHandler();
            if( !bRet )
            {
                if( aosErrors.size() > 0 &&
//.........这里部分代码省略.........

int OGRMDBJavaEnv::Init()
{
    if (jvm_static == NULL)
    {
        JavaVM* vmBuf[1];
        jsize nVMs;

        /* Are we already called from Java ? */
        if (JNI_GetCreatedJavaVMs(vmBuf, 1, &nVMs) == JNI_OK && nVMs == 1)
        {
            jvm = vmBuf[0];
            if (jvm->GetEnv((void **)&env, JNI_VERSION_1_2) == JNI_OK)
            {
                bCalledFromJava = TRUE;
            }
            else
            {
                jvm = NULL;
                env = NULL;
            }
        }
        else
        {
            JavaVMInitArgs args;
            JavaVMOption options[1];
            args.version = JNI_VERSION_1_2;
            const char* pszClassPath = CPLGetConfigOption("CLASSPATH", NULL);
            CPLString osClassPathOption;
            if (pszClassPath)
            {
                args.nOptions = 1;
                osClassPathOption.Printf("-Djava.class.path=%s", pszClassPath);
                options[0].optionString = (char*) osClassPathOption.c_str();
                args.options = options;
            }
            else
                args.nOptions = 0;
            args.ignoreUnrecognized = JNI_FALSE;

            int ret = JNI_CreateJavaVM(&jvm, (void **)&env, &args);
            if (ret != 0 || jvm == NULL || env == NULL)
            {
                CPLError(CE_Failure, CPLE_AppDefined, "JNI_CreateJavaVM failed (%d)", ret);
                return FALSE;
            }

            jvm_static = jvm;
            env_static = env;
        }
    }
    else
    {
        jvm = jvm_static;
        env = env_static;
    }

    CHECK(byteArray_class, env->FindClass("[B"));
    CHECK(file_class, env->FindClass("java/io/File"));
    CHECK(file_constructor, env->GetMethodID(file_class, "<init>", "(Ljava/lang/String;)V"));
    CHECK(database_class, env->FindClass("com/healthmarketscience/jackcess/Database"));

    CHECK(database_open, env->GetStaticMethodID(database_class, "open", "(Ljava/io/File;Z)Lcom/healthmarketscience/jackcess/Database;"));
    CHECK(database_close, env->GetMethodID(database_class, "close", "()V"));
    CHECK(database_getTableNames, env->GetMethodID(database_class, "getTableNames", "()Ljava/util/Set;"));
    CHECK(database_getTable, env->GetMethodID(database_class, "getTable", "(Ljava/lang/String;)Lcom/healthmarketscience/jackcess/Table;"));

    CHECK(table_class, env->FindClass("com/healthmarketscience/jackcess/Table"));
    CHECK(table_getColumns, env->GetMethodID(table_class, "getColumns", "()Ljava/util/List;"));
    CHECK(table_iterator, env->GetMethodID(table_class, "iterator", "()Ljava/util/Iterator;"));
    CHECK(table_getRowCount, env->GetMethodID(table_class, "getRowCount", "()I"));

    CHECK(column_class, env->FindClass("com/healthmarketscience/jackcess/Column"));
    CHECK(column_getName, env->GetMethodID(column_class, "getName", "()Ljava/lang/String;"));
    CHECK(column_getType, env->GetMethodID(column_class, "getType", "()Lcom/healthmarketscience/jackcess/DataType;"));
    CHECK(column_getLength, env->GetMethodID(column_class, "getLength", "()S"));
    CHECK(column_isVariableLength, env->GetMethodID(column_class, "isVariableLength", "()Z"));

    CHECK(datatype_class, env->FindClass("com/healthmarketscience/jackcess/DataType"));
    CHECK(datatype_getValue, env->GetMethodID(datatype_class, "getValue", "()B"));

    CHECK(list_class, env->FindClass("java/util/List"));
    CHECK(list_iterator, env->GetMethodID(list_class, "iterator", "()Ljava/util/Iterator;"));

    CHECK(set_class, env->FindClass("java/util/Set"));
    CHECK(set_iterator, env->GetMethodID(set_class, "iterator", "()Ljava/util/Iterator;"));

    CHECK(map_class, env->FindClass("java/util/Map"));
    CHECK(map_get, env->GetMethodID(map_class, "get", "(Ljava/lang/Object;)Ljava/lang/Object;"));

    CHECK(iterator_class,  env->FindClass("java/util/Iterator"));
    CHECK(iterator_hasNext, env->GetMethodID(iterator_class, "hasNext", "()Z"));
    CHECK(iterator_next, env->GetMethodID(iterator_class, "next", "()Ljava/lang/Object;"));

    CHECK(object_class,  env->FindClass("java/lang/Object"));
    CHECK(object_toString, env->GetMethodID(object_class, "toString", "()Ljava/lang/String;"));
    CHECK(object_getClass, env->GetMethodID(object_class, "getClass", "()Ljava/lang/Class;"));

    CHECK(boolean_class,  env->FindClass("java/lang/Boolean"));
    CHECK(boolean_booleanValue, env->GetMethodID(boolean_class, "booleanValue", "()Z"));

//.........这里部分代码省略.........

int OGRGeomediaDataSource::Open( const char * pszNewName, int bUpdate,
                                 CPL_UNUSED int bTestOpen )
{
    CPLAssert( nLayers == 0 );

/* -------------------------------------------------------------------- */
/*      If this is the name of an MDB file, then construct the          */
/*      appropriate connection string.  Otherwise clip of GEOMEDIA: to  */
/*      get the DSN.                                                    */
/*                                                                      */
/* -------------------------------------------------------------------- */
    char *pszDSN = NULL;
    if( STARTS_WITH_CI(pszNewName, "GEOMEDIA:") )
        pszDSN = CPLStrdup( pszNewName + 9 );
    else
    {
        const char *pszDSNStringTemplate = NULL;
        pszDSNStringTemplate = CPLGetConfigOption( "GEOMEDIA_DRIVER_TEMPLATE", "DRIVER=Microsoft Access Driver (*.mdb);DBQ=%s");
        if (!CheckDSNStringTemplate(pszDSNStringTemplate))
        {
            CPLError( CE_Failure, CPLE_AppDefined,
                      "Illegal value for GEOMEDIA_DRIVER_TEMPLATE option");
            return FALSE;
        }
        pszDSN = (char *) CPLMalloc(strlen(pszNewName)+strlen(pszDSNStringTemplate)+100);
        /* coverity[tainted_string] */
        snprintf( pszDSN,
                  strlen(pszNewName)+strlen(pszDSNStringTemplate)+100,
                  pszDSNStringTemplate,  pszNewName );
    }

/* -------------------------------------------------------------------- */
/*      Initialize based on the DSN.                                    */
/* -------------------------------------------------------------------- */
    CPLDebug( "Geomedia", "EstablishSession(%s)", pszDSN );

    if( !oSession.EstablishSession( pszDSN, NULL, NULL ) )
    {
        CPLError( CE_Failure, CPLE_AppDefined,
                  "Unable to initialize ODBC connection to DSN for %s,\n"
                  "%s", pszDSN, oSession.GetLastError() );
        CPLFree( pszDSN );
        return FALSE;
    }

    CPLFree( pszDSN );

    pszName = CPLStrdup( pszNewName );

    bDSUpdate = bUpdate;

/* -------------------------------------------------------------------- */
/*      Collect list of tables and their supporting info from           */
/*      GAliasTable.                                                    */
/* -------------------------------------------------------------------- */
    CPLString osGFeaturesTable = GetTableNameFromType("INGRFeatures");
    if (osGFeaturesTable.size() == 0)
        return FALSE;

    CPLString osGeometryProperties = GetTableNameFromType("INGRGeometryProperties");
    CPLString osGCoordSystemTable = GetTableNameFromType("GCoordSystemTable");

    std::vector<char **> apapszGeomColumns;
    {
        CPLODBCStatement oStmt( &oSession );
        oStmt.Appendf( "SELECT FeatureName, PrimaryGeometryFieldName FROM %s", osGFeaturesTable.c_str() );

        if( !oStmt.ExecuteSQL() )
        {
            CPLDebug( "GEOMEDIA",
                    "SELECT on %s fails, perhaps not a geomedia geodatabase?\n%s",
                    osGFeaturesTable.c_str(),
                    oSession.GetLastError() );
            return FALSE;
        }

        while( oStmt.Fetch() )
        {
            int i, iNew = static_cast<int>(apapszGeomColumns.size());
            char **papszRecord = NULL;
            for( i = 0; i < 2; i++ )
                papszRecord = CSLAddString( papszRecord,
                                            oStmt.GetColData(i) );
            apapszGeomColumns.resize(iNew+1);
            apapszGeomColumns[iNew] = papszRecord;
        }
    }

    std::vector<OGRSpatialReference*> apoSRS;
    if (osGeometryProperties.size() != 0 && osGCoordSystemTable.size() != 0)
    {
        std::vector<CPLString> aosGUID;
        {
            CPLODBCStatement oStmt( &oSession );
            oStmt.Appendf( "SELECT GCoordSystemGUID FROM %s", osGeometryProperties.c_str() );

            if( !oStmt.ExecuteSQL() )
            {
                CPLDebug( "GEOMEDIA",
                        "SELECT on %s fails, perhaps not a geomedia geodatabase?\n%s",
//.........这里部分代码省略.........

OGRLayer * OGRSQLiteExecuteSQL( GDALDataset* poDS,
                                const char *pszStatement,
                                OGRGeometry *poSpatialFilter,
                                CPL_UNUSED const char *pszDialect )
{
    char* pszTmpDBName = (char*) CPLMalloc(256);
    sprintf(pszTmpDBName, "/vsimem/ogr2sqlite/temp_%p.db", pszTmpDBName);

    OGRSQLiteDataSource* poSQLiteDS = NULL;
    int nRet;
    int bSpatialiteDB = FALSE;

    CPLString osOldVal;
    const char* pszOldVal = CPLGetConfigOption("OGR_SQLITE_STATIC_VIRTUAL_OGR", NULL);
    if( pszOldVal != NULL )
    {
        osOldVal = pszOldVal;
        pszOldVal = osOldVal.c_str();
    }

/* -------------------------------------------------------------------- */
/*      Create in-memory sqlite/spatialite DB                           */
/* -------------------------------------------------------------------- */

#ifdef HAVE_SPATIALITE

/* -------------------------------------------------------------------- */
/*      Creating an empty spatialite DB (with spatial_ref_sys populated */
/*      has a non-neglectable cost. So at the first attempt, let's make */
/*      one and cache it for later use.                                 */
/* -------------------------------------------------------------------- */
#if 1
    static vsi_l_offset nEmptyDBSize = 0;
    static GByte* pabyEmptyDB = NULL;
    {
        static CPLMutex* hMutex = NULL;
        CPLMutexHolder oMutexHolder(&hMutex);
        static int bTried = FALSE;
        if( !bTried &&
            CSLTestBoolean(CPLGetConfigOption("OGR_SQLITE_DIALECT_USE_SPATIALITE", "YES")) )
        {
            bTried = TRUE;
            char* pszCachedFilename = (char*) CPLMalloc(256);
            sprintf(pszCachedFilename, "/vsimem/ogr2sqlite/reference_%p.db",pszCachedFilename);
            char** papszOptions = CSLAddString(NULL, "SPATIALITE=YES");
            OGRSQLiteDataSource* poCachedDS = new OGRSQLiteDataSource();
            nRet = poCachedDS->Create( pszCachedFilename, papszOptions );
            CSLDestroy(papszOptions);
            papszOptions = NULL;
            delete poCachedDS;
            if( nRet )
                /* Note: the reference file keeps the ownership of the data, so that */
                /* it gets released with VSICleanupFileManager() */
                pabyEmptyDB = VSIGetMemFileBuffer( pszCachedFilename, &nEmptyDBSize, FALSE );
            CPLFree( pszCachedFilename );
        }
    }

    /* The following configuration option is useful mostly for debugging/testing */
    if( pabyEmptyDB != NULL && CSLTestBoolean(CPLGetConfigOption("OGR_SQLITE_DIALECT_USE_SPATIALITE", "YES")) )
    {
        GByte* pabyEmptyDBClone = (GByte*)VSIMalloc(nEmptyDBSize);
        if( pabyEmptyDBClone == NULL )
        {
            CPLFree(pszTmpDBName);
            return NULL;
        }
        memcpy(pabyEmptyDBClone, pabyEmptyDB, nEmptyDBSize);
        VSIFCloseL(VSIFileFromMemBuffer( pszTmpDBName, pabyEmptyDBClone, nEmptyDBSize, TRUE ));

        poSQLiteDS = new OGRSQLiteDataSource();
        CPLSetThreadLocalConfigOption("OGR_SQLITE_STATIC_VIRTUAL_OGR", "NO");
        nRet = poSQLiteDS->Open( pszTmpDBName, TRUE, NULL );
        CPLSetThreadLocalConfigOption("OGR_SQLITE_STATIC_VIRTUAL_OGR", pszOldVal);
        if( !nRet )
        {
            /* should not happen really ! */
            delete poSQLiteDS;
            VSIUnlink(pszTmpDBName);
            CPLFree(pszTmpDBName);
            return NULL;
        }
        bSpatialiteDB = TRUE;
    }
#else
    /* No caching version */
    poSQLiteDS = new OGRSQLiteDataSource();
    char** papszOptions = CSLAddString(NULL, "SPATIALITE=YES");
    CPLSetThreadLocalConfigOption("OGR_SQLITE_STATIC_VIRTUAL_OGR", "NO");
    nRet = poSQLiteDS->Create( pszTmpDBName, papszOptions );
    CPLSetThreadLocalConfigOption("OGR_SQLITE_STATIC_VIRTUAL_OGR", pszOldVal);
    CSLDestroy(papszOptions);
    papszOptions = NULL;
    if( nRet )
    {
        bSpatialiteDB = TRUE;
    }
#endif

    else
//.........这里部分代码省略.........

static
void CPLXMLSchemaResolveInclude( const char* pszMainSchemaLocation,
                                 CPLXMLNode *psSchemaNode )
{
    std::set<CPLString> osAlreadyIncluded;

    bool bTryAgain;
    do
    {
        CPLXMLNode *psLast = NULL;
        bTryAgain = false;

        CPLXMLNode *psThis = psSchemaNode->psChild;
        for( ; psThis != NULL; psThis = psThis->psNext )
        {
            if( psThis->eType == CXT_Element &&
                EQUAL(psThis->pszValue,"include") )
            {
                const char* pszSchemaLocation =
                        CPLGetXMLValue(psThis, "schemaLocation", NULL);
                if( pszSchemaLocation != NULL &&
                    osAlreadyIncluded.count( pszSchemaLocation) == 0 )
                {
                    osAlreadyIncluded.insert( pszSchemaLocation );

                    if( !STARTS_WITH(pszSchemaLocation, "http://") &&
                        !STARTS_WITH(pszSchemaLocation, "https://") &&
                        CPLIsFilenameRelative(pszSchemaLocation ) )
                    {
                        pszSchemaLocation = CPLFormFilename(
                            CPLGetPath(pszMainSchemaLocation), pszSchemaLocation, NULL );
                    }

                    CPLXMLNode *psIncludedXSDTree =
                                GMLParseXMLFile( pszSchemaLocation );
                    if( psIncludedXSDTree != NULL )
                    {
                        CPLStripXMLNamespace( psIncludedXSDTree, NULL, TRUE );
                        CPLXMLNode *psIncludedSchemaNode =
                                CPLGetXMLNode( psIncludedXSDTree, "=schema" );
                        if( psIncludedSchemaNode != NULL )
                        {
                            /* Substitute de <include> node by its content */
                            CPLXMLNode* psFirstChildElement =
                                CPLGetFirstChildNode(psIncludedSchemaNode);
                            if( psFirstChildElement != NULL )
                            {
                                CPLXMLNode* psCopy = CPLCloneXMLTree(psFirstChildElement);
                                if( psLast != NULL )
                                    psLast->psNext = psCopy;
                                else
                                    psSchemaNode->psChild = psCopy;
                                CPLXMLNode* psNext = psThis->psNext;
                                psThis->psNext = NULL;
                                CPLDestroyXMLNode(psThis);
                                psThis = CPLGetLastNode(psCopy);
                                psThis->psNext = psNext;

                                /* In case the included schema also contains */
                                /* includes */
                                bTryAgain = true;
                            }

                        }
                        CPLDestroyXMLNode( psIncludedXSDTree );
                    }
                }
            }

            psLast = psThis;
        }
    } while( bTryAgain );

    const char* pszSchemaOutputName =
        CPLGetConfigOption("GML_SCHEMA_OUTPUT_NAME", NULL);
    if( pszSchemaOutputName != NULL )
    {
        CPLSerializeXMLTreeToFile( psSchemaNode, pszSchemaOutputName );
    }
}