gml_is_srid_planar()

static int gml_is_srid_planar ( int  srid )

static

Return 1 if given srid is planar (0 otherwise, i.e geocentric srid) Return -1 if srid is not in spatial_ref_sys.

Definition at line 329 of file lwgeom_in_gml.c.

Referenced by parse_gml_srs().

{
        char *result;
        char query[256];
        int is_planar, err;

        if (SPI_OK_CONNECT != SPI_connect ())
                lwpgerror("gml_is_srid_planar: could not connect to SPI manager");

        /* A way to find if this projection is planar or geocentric */
        sprintf(query, "SELECT position('+units=m ' in proj4text) \
                        FROM spatial_ref_sys WHERE srid='%d'", srid);

        err = SPI_exec(query, 1);
        if (err < 0) lwpgerror("gml_is_srid_planar: error executing query %d", err);

        /* No entry in spatial_ref_sys */
        if (SPI_processed <= 0)
        {
                SPI_finish();
                return -1;
        }

        result = SPI_getvalue(SPI_tuptable->vals[0], SPI_tuptable->tupdesc, 1);
        is_planar = atoi(result);
        SPI_finish();

        return is_planar;
}

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