chinesePostman_driver.h File Reference

#include <stddef.h>
#include "c_types/pgr_edge_t.h"
#include "c_types/general_path_element_t.h"

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Functions
void	do_pgr_directedChPP (pgr_edge_t *data_edges, size_t total_edges, bool only_cost, General_path_element_t **return_tuples, size_t *return_count, char **log_msg, char **notice_msg, char **err_msg)

Function Documentation

do_pgr_directedChPP()

void do_pgr_directedChPP	(	pgr_edge_t *	data_edges,
		size_t	total_edges,
		bool	only_cost,
		General_path_element_t **	return_tuples,
		size_t *	return_count,
		char **	log_msg,
		char **	notice_msg,
		char **	err_msg
	)

Definition at line 44 of file chinesePostman_driver.cpp.

                         {
    std::ostringstream log;
    std::ostringstream err;
    std::ostringstream notice;
    try {
        pgassert(!(*log_msg));
        pgassert(!(*notice_msg));
        pgassert(!(*err_msg));
        pgassert(!(*return_tuples));
        pgassert(*return_count == 0);
        pgassert(total_edges != 0);
 
        pgrouting::graph::PgrDirectedChPPGraph digraph(
                data_edges, total_edges);
 
        double minCost;
        minCost = digraph.DirectedChPP();
 
        std::vector<General_path_element_t> pathEdges;
        if (only_cost) {
            if (minCost >= 0.0) {
                General_path_element_t edge;
                edge.seq = -1;
                edge.node = edge.edge = -1;
                edge.cost = edge.agg_cost = minCost;
                pathEdges.push_back(edge);
            }
        } else {
            pathEdges = digraph.GetPathEdges();
        }
 
 
        size_t count = pathEdges.size();
 
        if (count == 0) {
            (*return_tuples) = NULL;
            (*return_count) = 0;
            notice <<
                "No paths found";
            *log_msg = pgr_msg(notice.str().c_str());
            return;
        }
 
 
        (*return_tuples) = pgr_alloc(count, (*return_tuples));
        for (size_t i = 0; i < count; i++) {
            (*return_tuples)[i] = pathEdges[i];
        }
        *return_count = count;
 
        *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());
    }
}

References edge::cost, pgrouting::graph::PgrDirectedChPPGraph::DirectedChPP(), pgrouting::graph::PgrDirectedChPPGraph::GetPathEdges(), pgassert, pgr_alloc(), pgr_free(), pgr_msg(), and AssertFailedException::what().

Referenced by process().