lengauerTarjanDominatorTree_driver.h File Reference

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

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Functions
void	do_pgr_LTDTree (pgr_edge_t *data_edges, size_t total_tuples, int64_t root_vertex, pgr_ltdtree_rt **return_tuples, size_t *return_count, char **log_msg, char **notice_msg, char **err_msg)

Function Documentation

do_pgr_LTDTree()

void do_pgr_LTDTree	(	pgr_edge_t *	data_edges,
		size_t	total_tuples,
		int64_t	root_vertex,
		pgr_ltdtree_rt **	return_tuples,
		size_t *	return_count,
		char **	log_msg,
		char **	notice_msg,
		char **	err_msg
	)

Definition at line 51 of file lengauerTarjanDominatorTree_driver.cpp.

                        {
    std::ostringstream log;
    std::ostringstream notice;
    std::ostringstream err;
 
 
    try {
        pgassert(total_edges != 0);
        pgassert(!(*log_msg));
        pgassert(!(*notice_msg));
        pgassert(!(*err_msg));
        pgassert(!(*return_tuples));
        pgassert(*return_count == 0);
 
        std::string logstr;
 
/***********************Working with graph**************************/
 
        graphType gType = DIRECTED;
        pgrouting::DirectedGraph digraph(gType);
        digraph.insert_edges(data_edges, total_edges);
        std::vector<pgr_ltdtree_rt> results;
        pgrouting::functions::Pgr_LTDTree<pgrouting::DirectedGraph> fn_LTDTree;
        results = fn_LTDTree.pgr_ltdtree(digraph, root_vertex);
 
        logstr += fn_LTDTree.get_log();
        log << logstr;
 
        auto count = results.size();
 
        if (count == 0) {
            (*return_tuples) = NULL;
            (*return_count) = 0;
            notice << "No result found";
            *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());
            return;
        }
        (*return_tuples) = pgr_alloc(count, (*return_tuples));
        for (size_t i = 0; i < count; i++) {
            *((*return_tuples) + i) = results[i];
        }
        (*return_count) = count;
 
        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, pgrouting::Pgr_messages::get_log(), pgrouting::graph::Pgr_base_graph< G, T_V, T_E >::insert_edges(), pgassert, pgr_alloc(), pgr_free(), pgrouting::functions::Pgr_LTDTree< G >::pgr_ltdtree(), pgr_msg(), and AssertFailedException::what().

Referenced by process().