LWGEOM_from_WKB()

Datum LWGEOM_from_WKB

(

PG_FUNCTION_ARGS

)

Definition at line 826 of file lwgeom_ogc.c.

{
        bytea *bytea_wkb = (bytea*)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(bytea_wkb)-VARHDRSZ, LW_PARSER_CHECK_ALL);
 
        if ( lwgeom_needs_bbox(lwgeom) )
                lwgeom_add_bbox(lwgeom);
 
        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 geometry_serialize(), gserialized_get_srid(), gserialized_set_srid(), LW_PARSER_CHECK_ALL, lwgeom_add_bbox(), lwgeom_free(), lwgeom_from_wkb(), lwgeom_needs_bbox(), and SRID_UNKNOWN.

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