RASTER_getBandFileTimestamp()

Datum RASTER_getBandFileTimestamp

(

PG_FUNCTION_ARGS

)

Definition at line 410 of file rtpg_band_properties.c.

{
    rt_pgraster *pgraster;
    rt_raster raster;
    rt_band band = NULL;
    int64_t fileSize;
    int32_t bandindex;
 
    /* Index is 1-based */
    bandindex = PG_GETARG_INT32(1);
    if ( bandindex < 1 ) {
            elog(NOTICE, "Invalid band index (must use 1-based). Returning NULL");
            PG_RETURN_NULL();
    }
 
    if (PG_ARGISNULL(0)) PG_RETURN_NULL();
    pgraster = (rt_pgraster *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
 
    raster = rt_raster_deserialize(pgraster, FALSE);
    if ( ! raster ) {
        PG_FREE_IF_COPY(pgraster, 0);
        elog(ERROR, "RASTER_getBandFileTimestamp: Could not deserialize raster");
        PG_RETURN_NULL();
    }
 
    /* Fetch requested band */
    band = rt_raster_get_band(raster, bandindex - 1);
    if (!band) {
        elog(
                NOTICE,
                "Could not find raster band of index %d when getting band path. Returning NULL",
                bandindex
        );
        rt_raster_destroy(raster);
        PG_FREE_IF_COPY(pgraster, 0);
        PG_RETURN_NULL();
    }
 
    if (!rt_band_is_offline(band)) {
        elog(NOTICE, "Band of index %d is not out-db.", bandindex);
        rt_band_destroy(band);
        rt_raster_destroy(raster);
        PG_FREE_IF_COPY(pgraster, 0);
        PG_RETURN_NULL();
    }
 
    fileSize = rt_band_get_file_timestamp(band);
 
    rt_band_destroy(band);
    rt_raster_destroy(raster);
    PG_FREE_IF_COPY(pgraster, 0);
 
    PG_RETURN_INT64(fileSize);
}

References ovdump::band, FALSE, rtrowdump::raster, rt_band_destroy(), rt_band_get_file_timestamp(), rt_band_is_offline(), rt_raster_deserialize(), rt_raster_destroy(), and rt_raster_get_band().

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