contractGraph_driver.h File Reference

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

Include dependency graph for contractGraph_driver.h:

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Functions
void	do_pgr_contractGraph (pgr_edge_t *data_edges, size_t total_tuples, int64_t *forbidden_vertices, size_t size_forbidden_vertices, int64_t *contraction_order, size_t size_contraction_order, int64_t max_cycles, bool directed, contracted_rt **return_tuples, size_t *return_count, char **log_msg, char **notice_msg, char **err_msg)

Function Documentation

do_pgr_contractGraph()

void do_pgr_contractGraph	(	pgr_edge_t *	data_edges,
		size_t	total_tuples,
		int64_t *	forbidden_vertices,
		size_t	size_forbidden_vertices,
		int64_t *	contraction_order,
		size_t	size_contraction_order,
		int64_t	max_cycles,
		bool	directed,
		contracted_rt **	return_tuples,
		size_t *	return_count,
		char **	log_msg,
		char **	notice_msg,
		char **	err_msg
	)

Definition at line 177 of file contractGraph_driver.cpp.

                        {
    std::ostringstream log;
    std::ostringstream notice;
    std::ostringstream err;
    try {
        pgassert(total_edges != 0);
        pgassert(size_contraction_order != 0);
        pgassert(max_cycles != 0);
        pgassert(!(*log_msg));
        pgassert(!(*notice_msg));
        pgassert(!(*err_msg));
        pgassert(!(*return_tuples));
        pgassert(*return_count == 0);
 
        /*
         * Converting to C++ structures
         */
        std::vector<pgr_edge_t> edges(data_edges, data_edges + total_edges);
        std::vector<int64_t> forbid(
                forbidden_vertices,
                forbidden_vertices + size_forbidden_vertices);
        std::vector<int64_t> ordering(
                contraction_order,
                contraction_order + size_contraction_order);
 
        for (const auto kind : ordering) {
            if (!pgrouting::contraction::is_valid_contraction(static_cast<int>(kind))) {
                *err_msg = pgr_msg("Invalid contraction type found");
                log << "Contraction type " << kind << " not valid";
                *log_msg = pgr_msg(log.str().c_str());
                return;
            }
        }
 
 
        graphType gType = directed? DIRECTED: UNDIRECTED;
        if (directed) {
            using DirectedGraph = pgrouting::graph::CHDirectedGraph;
            DirectedGraph digraph(gType);
 
            process_contraction(digraph, edges, forbid, ordering,
                    max_cycles);
 
            get_postgres_result(
                    digraph,
                    return_tuples,
                    return_count);
        } else {
            using UndirectedGraph = pgrouting::graph::CHUndirectedGraph;
            UndirectedGraph undigraph(gType);
            process_contraction(undigraph, edges, forbid, ordering,
                    max_cycles);
 
            get_postgres_result(
                    undigraph,
                    return_tuples,
                    return_count);
        }
 
        pgassert(err.str().empty());
        *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 DIRECTED, get_postgres_result(), pgrouting::contraction::is_valid_contraction(), pgassert, pgr_free(), pgr_msg(), anonymous_namespace{contractGraph_driver.cpp}::process_contraction(), UNDIRECTED, and AssertFailedException::what().

Referenced by process().