[gdal-dev] VRT performance Improvement

[MRRAJESH]

Developers,

We are using VRT file (located in physical disk) as input to
GDALVectorTranslate in C++. This VRT file pointing JSON file, which is
little bigger size. How to improve the performance?

const char *pszFilename = "C:\\Test\\MVT.vrt";	
hSrcDS = (GDALDatasetH *)GDALOpenEx(pszFilename, GDAL_OF_READONLY, NULL,
NULL, NULL);

dst = (GDALDataset *)GDALVectorTranslate(vsibuf, NULL, 1, &hSrcDS, opt,
NULL);

*VRT FILE:*

OGRVRTDataSource>
  <OGRVRTLayer name="Administrative">
    <SrcDataSource relativeToVRT="1">features.json</SrcDataSource>
    <SrcSQL dialect="sqlite">SELECT * FROM "features" WHERE LegendEntryName 
    IN("V_XX_AR","V_XX_LB","V_DOCIND_PT","V_XX_ML")</SrcSQL>
   </OGRVRTLayer>
.....
....


Regards,
Rajesh



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