LWGEOM_from_WKB()

Datum LWGEOM_from_WKB

(

PG_FUNCTION_ARGS

)

Definition at line 789 of file lwgeom_ogc.c.

{
        bytea *bytea_wkb = PG_GETARG_BYTEA_P(0);
        int32 srid = 0;
        GSERIALIZED *geom;
        LWGEOM *lwgeom;
        uint8_t *wkb = (uint8_t*)VARDATA(bytea_wkb);
 
        lwgeom = lwgeom_from_wkb(wkb, VARSIZE_ANY_EXHDR(bytea_wkb), LW_PARSER_CHECK_ALL);
        if (!lwgeom)
                lwpgerror("Unable to parse WKB");
 
        geom = geometry_serialize(lwgeom);
        lwgeom_free(lwgeom);
        PG_FREE_IF_COPY(bytea_wkb, 0);
 
        if ( gserialized_get_srid(geom) != SRID_UNKNOWN )
        {
                elog(WARNING, "OGC WKB expected, EWKB provided - use GeometryFromEWKB() for this");
        }
 
        if ( PG_NARGS() > 1 )
        {
                srid = PG_GETARG_INT32(1);
                if ( srid != gserialized_get_srid(geom) )
                        gserialized_set_srid(geom, srid);
        }
 
        PG_RETURN_POINTER(geom);
}

References gserialized_get_srid(), gserialized_set_srid(), LW_PARSER_CHECK_ALL, lwgeom_free(), lwgeom_from_wkb(), and SRID_UNKNOWN.

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