srs_tuple_from_entry()

static Datum srs_tuple_from_entry ( const struct srs_entry *  entry, TupleDesc  tuple_desc  )

static

Definition at line 339 of file postgis/lwgeom_transform.c.

{
        HeapTuple tuple;
        Datum tuple_data[7] = {0, 0, 0, 0, 0, 0, 0};
        bool  tuple_null[7] = {true, true, true, true, true, true, true};
        PJ_CONTEXT * ctx = NULL;
        const char * const empty_options[2] = {NULL};
        const char * const wkt_options[2] = {"MULTILINE=NO", NULL};
        const char * srtext;
        const char * proj4text;
        const char * srname;
        double w_lon, s_lat, e_lon, n_lat;
        int ok;
 
        PJ *obj = proj_create_from_database(ctx,
                    text_to_cstring(entry->auth_name),
                    text_to_cstring(entry->auth_code),
                    PJ_CATEGORY_CRS, 0, empty_options);
 
        if (!obj)
                return (Datum) 0;
 
        srtext = proj_as_wkt(ctx, obj, PJ_WKT1_GDAL, wkt_options);
        proj4text = proj_as_proj_string(ctx, obj, PJ_PROJ_4, empty_options);
        srname = proj_get_name(obj);
        ok = proj_get_area_of_use(ctx, obj, &w_lon, &s_lat, &e_lon, &n_lat, NULL);
 
        if (entry->auth_name) {
                tuple_data[0] = PointerGetDatum(entry->auth_name);
                tuple_null[0] = false;
        }
 
        if (entry->auth_code) {
                tuple_data[1] = PointerGetDatum(entry->auth_code);
                tuple_null[1] = false;
        }
 
        if (srname) {
                tuple_data[2] = PointerGetDatum(cstring_to_text(srname));
                tuple_null[2] = false;
        }
 
        if (srtext) {
                tuple_data[3] = PointerGetDatum(cstring_to_text(srtext));
                tuple_null[3] = false;
        }
 
        if (proj4text) {
                tuple_data[4] = PointerGetDatum(cstring_to_text(proj4text));
                tuple_null[4] = false;
        }
 
        if (ok) {
                LWPOINT *p_sw = lwpoint_make2d(4326, w_lon, s_lat);
                LWPOINT *p_ne = lwpoint_make2d(4326, e_lon, n_lat);
                GSERIALIZED *g_sw = geometry_serialize((LWGEOM*)p_sw);
                GSERIALIZED *g_ne = geometry_serialize((LWGEOM*)p_ne);
                tuple_data[5] = PointerGetDatum(g_sw);
                tuple_null[5] = false;
                tuple_data[6] = PointerGetDatum(g_ne);
                tuple_null[6] = false;
        }
 
        tuple = heap_form_tuple(tuple_desc, tuple_data, tuple_null);
        proj_destroy(obj);
 
        return HeapTupleGetDatum(tuple);
}

References srs_entry::auth_code, srs_entry::auth_name, and lwpoint_make2d().

Referenced by postgis_srs_entry(), postgis_srs_entry_all(), and postgis_srs_search().

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