Libosmium: include/osmium/handler/object_relations.hpp Source File

Libosmium Fast and flexible C++ library for working with OpenStreetMap data

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object_relations.hpp
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1#ifndef OSMIUM_HANDLER_OBJECT_RELATIONS_HPP
2#define OSMIUM_HANDLER_OBJECT_RELATIONS_HPP
3
4/*
5
6This file is part of Osmium (https://osmcode.org/libosmium).
7
8Copyright 2013-2026 Jochen Topf <jochen@topf.org> and others (see README).
9
10Boost Software License - Version 1.0 - August 17th, 2003
11
12Permission is hereby granted, free of charge, to any person or organization
13obtaining a copy of the software and accompanying documentation covered by
14this license (the "Software") to use, reproduce, display, distribute,
15execute, and transmit the Software, and to prepare derivative works of the
16Software, and to permit third-parties to whom the Software is furnished to
17do so, all subject to the following:
18
19The copyright notices in the Software and this entire statement, including
20the above license grant, this restriction and the following disclaimer,
21must be included in all copies of the Software, in whole or in part, and
22all derivative works of the Software, unless such copies or derivative
23works are solely in the form of machine-executable object code generated by
24a source language processor.
25
26THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
27IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
28FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
29SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
30FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
31ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
32DEALINGS IN THE SOFTWARE.
33
34*/
35
36#include <osmium/handler.hpp>
37#include <osmium/index/multimap.hpp>
38#include <osmium/osm/item_type.hpp>
39#include <osmium/osm/node_ref.hpp>
40#include <osmium/osm/relation.hpp>
41#include <osmium/osm/types.hpp>
42#include <osmium/osm/way.hpp>
43
44namespace osmium {
45
46 namespace handler {
47
55 class ObjectRelations : public osmium::handler::Handler {
56
57 using index_type = osmium::index::multimap::Multimap<unsigned_object_id_type, unsigned_object_id_type>;
58
59 index_type& m_index_n2w;
60 index_type& m_index_n2r;
61 index_type& m_index_w2r;
62 index_type& m_index_r2r;
63
64 public:
65
66 explicit ObjectRelations(index_type& n2w, index_type& n2r, index_type& w2r, index_type& r2r) :
67 m_index_n2w(n2w),
68 m_index_n2r(n2r),
69 m_index_w2r(w2r),
70 m_index_r2r(r2r) {
71 }
72
73 void way(const osmium::Way& way) {
74 for (const auto& node_ref : way.nodes()) {
75 m_index_n2w.set(node_ref.positive_ref(), way.positive_id());
76 }
77 }
78
79 void relation(const osmium::Relation& relation) {
80 for (const auto& member : relation.members()) {
81 switch (member.type()) {
82 case osmium::item_type::node:
83 m_index_n2r.set(member.positive_ref(), relation.positive_id());
84 break;
85 case osmium::item_type::way:
86 m_index_w2r.set(member.positive_ref(), relation.positive_id());
87 break;
88 case osmium::item_type::relation:
89 m_index_r2r.set(member.positive_ref(), relation.positive_id());
90 break;
91 default:
92 break;
93 }
94 }
95 }
96
97 }; // class ObjectRelations
98
99 } // namespace handler
100
101} // namespace osmium
102
103#endif // OSMIUM_HANDLER_OBJECT_RELATIONS_HPP
osmium::Relation
Definition relation.hpp:161
osmium::Way
Definition way.hpp:72
osmium::handler::Handler
Definition handler.hpp:71
osmium::handler::ObjectRelations::m_index_n2w
index_type & m_index_n2w
Definition object_relations.hpp:59
osmium::handler::ObjectRelations::index_type
osmium::index::multimap::Multimap< unsigned_object_id_type, unsigned_object_id_type > index_type
Definition object_relations.hpp:57
osmium::handler::ObjectRelations::way
void way(const osmium::Way &way)
Definition object_relations.hpp:73
osmium::handler::ObjectRelations::m_index_r2r
index_type & m_index_r2r
Definition object_relations.hpp:62
osmium::handler::ObjectRelations::ObjectRelations
ObjectRelations(index_type &n2w, index_type &n2r, index_type &w2r, index_type &r2r)
Definition object_relations.hpp:66
osmium::handler::ObjectRelations::m_index_n2r
index_type & m_index_n2r
Definition object_relations.hpp:60
osmium::handler::ObjectRelations::relation
void relation(const osmium::Relation &relation)
Definition object_relations.hpp:79
osmium::handler::ObjectRelations::m_index_w2r
index_type & m_index_w2r
Definition object_relations.hpp:61
osmium::index::multimap::Multimap
Definition multimap.hpp:51
handler.hpp
item_type.hpp
multimap.hpp
osmium::handler
Osmium handlers provide callbacks for OSM objects.
Definition dynamic_handler.hpp:49
osmium
Namespace for everything in the Osmium library.
Definition assembler.hpp:53
osmium::item_type::relation
@ relation
Definition item_type.hpp:50
osmium::item_type::node
@ node
Definition item_type.hpp:48
osmium::item_type::way
@ way
Definition item_type.hpp:49
node_ref.hpp
relation.hpp
types.hpp
way.hpp