RASTER_asHexWKB()

Datum RASTER_asHexWKB

(

PG_FUNCTION_ARGS

)

Definition at line 98 of file rtpg_wkb.c.

{
        rt_pgraster *pgraster = NULL;
        rt_raster raster = NULL;
        int outasin = FALSE;
        uint32_t hexwkbsize = 0;
        char *hexwkb = NULL;
        text *result = NULL;
 
        POSTGIS_RT_DEBUG(3, "Starting");
 
        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_asHexWKB: Cannot deserialize raster");
                PG_RETURN_NULL();
        }
 
        if (!PG_ARGISNULL(1))
                outasin = PG_GETARG_BOOL(1);
 
        hexwkb = rt_raster_to_hexwkb(raster, outasin, &hexwkbsize);
        if (!hexwkb) {
                rt_raster_destroy(raster);
                PG_FREE_IF_COPY(pgraster, 0);
                elog(ERROR, "RASTER_asHexWKB: Cannot allocate and generate Hex WKB data");
                PG_RETURN_NULL();
        }
 
        /* Free the raster objects used */
        rt_raster_destroy(raster);
        PG_FREE_IF_COPY(pgraster, 0);
 
        result = cstring_to_text(hexwkb);
 
        PG_RETURN_TEXT_P(result);
}

References FALSE, POSTGIS_RT_DEBUG, rtrowdump::raster, rt_raster_deserialize(), rt_raster_destroy(), and rt_raster_to_hexwkb().

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