drivedist_driver.h File Reference

#include "c_types/pgr_edge_t.h"
#include "c_types/general_path_element_t.h"

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Functions
void	do_pgr_driving_many_to_dist (pgr_edge_t *edges, size_t total_edges, int64_t *start_vertex, size_t s_len, double distance, bool directed, bool equicost, General_path_element_t **return_tuples, size_t *return_count, char **log_msg, char **notice_msg, char **err_msg)

Function Documentation

void do_pgr_driving_many_to_dist	(	pgr_edge_t *	edges,
		size_t	total_edges,
		int64_t *	start_vertex,
		size_t	s_len,
		double	distance,
		bool	directed,
		bool	equicost,
		General_path_element_t **	return_tuples,
		size_t *	return_count,
		char **	log_msg,
		char **	notice_msg,
		char **	err_msg
	)

Definition at line 82 of file drivedist_driver.cpp.

References collapse_paths(), count_tuples(), DIRECTED, pgrouting::extract_vertices(), pgrouting::graph::Pgr_base_graph< G, Vertex, Edge >::insert_edges(), pgassert, pgr_alloc(), pgr_drivingDistance(), pgr_free(), pgr_msg(), UNDIRECTED, and AssertFailedException::what().

Referenced by process().

                        {
    std::ostringstream log;
    std::ostringstream err;
    std::ostringstream notice;

    try {
        pgassert(total_edges != 0);
        pgassert(!(*log_msg));
        pgassert(!(*notice_msg));
        pgassert(!(*err_msg));
        pgassert(!(*return_tuples));
        pgassert(*return_count == 0);
        pgassert((*return_tuples) == NULL);

        graphType gType = directedFlag? DIRECTED: UNDIRECTED;

        std::deque<Path> paths;
        std::vector<int64_t> start_vertices(start_vertex, start_vertex + s_len);

        auto vertices(pgrouting::extract_vertices(data_edges, total_edges));

#ifdef WITH_TIME
        clock_t begin;
        std::time_t start_t;
        std::chrono::steady_clock::time_point begin_elapsed;
#endif

        if (directedFlag) {
#ifdef WITH_TIME
            start_timing(start_t, begin_elapsed, begin);
            log << "*********Creating graph at time: " << std::ctime(&start_t) << "\n";
#endif
            pgrouting::DirectedGraph digraph(vertices, gType);
#ifdef WITH_TIME
            end_timing(start_t, begin_elapsed, begin, log);
#endif

#ifdef WITH_TIME
            start_timing(start_t, begin_elapsed, begin);
            log << "********Inserting edges at time: " << std::ctime(&start_t) << "\n";
#endif
            digraph.insert_edges(data_edges, total_edges, true);
#ifdef WITH_TIME
            end_timing(start_t, begin_elapsed, begin, log);
#endif

#ifdef WITH_TIME
            start_timing(start_t, begin_elapsed, begin);
            log << "*******Calling the C++ call to pgr_drivingDistance: " << std::ctime(&start_t) << "\n";
#endif
            paths = pgr_drivingDistance(
                    digraph, start_vertices, distance, equiCostFlag, log);
#ifdef WITH_TIME
            end_timing(start_t, begin_elapsed, begin, log);
#endif
        } else {
#ifdef WITH_TIME
            start_timing(start_t, begin_elapsed, begin);
            log << "******Creating graph at time: " << std::ctime(&start_t) << "\n";
#endif
            pgrouting::UndirectedGraph undigraph(vertices, gType);
#ifdef WITH_TIME
            end_timing(start_t, begin_elapsed, begin, log);
#endif

#ifdef WITH_TIME
            start_timing(start_t, begin_elapsed, begin);
            log << "*******Inserting edges at time: " << std::ctime(&start_t) << "\n";
#endif
            undigraph.insert_edges(data_edges, total_edges, true);
#ifdef WITH_TIME
            end_timing(start_t, begin_elapsed, begin, log);
#endif

#ifdef WITH_TIME
            start_timing(start_t, begin_elapsed, begin);
            log << "*******Calling the C++ call to pgr_drivingDistance: " << std::ctime(&start_t) << "\n";
#endif
            paths = pgr_drivingDistance(
                    undigraph, start_vertices, distance, equiCostFlag, log);
#ifdef WITH_TIME
            end_timing(start_t, begin_elapsed, begin, log);
#endif
        }

        size_t count(count_tuples(paths));


        if (count == 0) {
            log << "\nNo return values were found";
            *notice_msg = pgr_msg(log.str().c_str());
            return;
        }
        *return_tuples = pgr_alloc(count, (*return_tuples));
        auto trueCount(collapse_paths(return_tuples, paths));
        *return_count = trueCount;


        *log_msg = log.str().empty()?
            *log_msg :
            pgr_msg(log.str().c_str());
        *notice_msg = notice.str().empty()?
            *notice_msg :
            pgr_msg(notice.str().c_str());
    } catch (AssertFailedException &except) {
        (*return_tuples) = pgr_free(*return_tuples);
        (*return_count) = 0;
        err << except.what();
        *err_msg = pgr_msg(err.str().c_str());
        *log_msg = pgr_msg(log.str().c_str());
    } catch (std::exception &except) {
        (*return_tuples) = pgr_free(*return_tuples);
        (*return_count) = 0;
        err << except.what();
        *err_msg = pgr_msg(err.str().c_str());
        *log_msg = pgr_msg(log.str().c_str());
    } catch( ... ) {
        (*return_tuples) = pgr_free(*return_tuples);
        (*return_count) = 0;
        err << "Caught unknown exception!";
        *err_msg = pgr_msg(err.str().c_str());
        *log_msg = pgr_msg(log.str().c_str());
    }
}

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