RASTER_isEmpty()

Datum RASTER_isEmpty

(

PG_FUNCTION_ARGS

)

Definition at line 520 of file rtpg_raster_properties.c.

References FALSE, PG_FUNCTION_INFO_V1(), rtrowdump::raster, RASTER_hasNoBand(), rt_raster_deserialize(), rt_raster_destroy(), rt_raster_is_empty(), and TRUE.

Referenced by RASTER_getGeotransform().

{
    rt_pgraster *pgraster = NULL;
    rt_raster raster = NULL;
    bool isempty = FALSE;

    /* Deserialize raster */
    if (PG_ARGISNULL(0)) PG_RETURN_NULL();
    pgraster = (rt_pgraster *) PG_DETOAST_DATUM_SLICE(PG_GETARG_DATUM(0), 0, sizeof(struct rt_raster_serialized_t));

    raster = rt_raster_deserialize(pgraster, TRUE);
    if ( ! raster )
    {
        ereport(ERROR,
            (errcode(ERRCODE_OUT_OF_MEMORY),
                errmsg("RASTER_isEmpty: Could not deserialize raster")));
        PG_FREE_IF_COPY(pgraster, 0);
        PG_RETURN_NULL();
    }

    isempty = rt_raster_is_empty(raster);

    rt_raster_destroy(raster);
    PG_FREE_IF_COPY(pgraster, 0);

    PG_RETURN_BOOL(isempty);
}

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