lineGraph_driver.h File Reference

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

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Functions
void	do_pgr_lineGraph (pgr_edge_t *data_edges, size_t total_edges, bool directed, Line_graph_rt **return_tuples, size_t *return_count, char **log_msg, char **notice_msg, char **err_msg)

Function Documentation

do_pgr_lineGraph()

void do_pgr_lineGraph	(	pgr_edge_t *	data_edges,
		size_t	total_edges,
		bool	directed,
		Line_graph_rt **	return_tuples,
		size_t *	return_count,
		char **	log_msg,
		char **	notice_msg,
		char **	err_msg
	)

Definition at line 60 of file lineGraph_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);
 
        graphType gType = directed? DIRECTED: UNDIRECTED;
 
        pgrouting::DirectedGraph digraph(gType);
        digraph.insert_edges_neg(data_edges, total_edges);
 
        log << digraph << "\n";
        pgrouting::graph::Pgr_lineGraph<
            pgrouting::LinearDirectedGraph,
            pgrouting::Line_vertex,
            pgrouting::Basic_edge> line(digraph);
        std::vector< Line_graph_rt > line_graph_edges;
        line_graph_edges = line.get_postgres_results_directed();
        auto count = line_graph_edges.size();
 
        if (count == 0) {
            (*return_tuples) = NULL;
            (*return_count) = 0;
            notice <<
                "Only vertices graph";
        } else {
            size_t sequence = 0;
 
            get_postgres_result(
                line_graph_edges,
                return_tuples,
                sequence);
            (*return_count) = sequence;
        }
 
        pgassert(*err_msg == NULL);
        *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::graph::Pgr_base_graph< G, T_V, T_E >::insert_edges_neg(), pgassert, pgr_free(), pgr_msg(), UNDIRECTED, and AssertFailedException::what().

Referenced by process().