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#ifndef TAGSTATS_STATISTICS_HANDLER_HPP
#define TAGSTATS_STATISTICS_HANDLER_HPP
/*
Copyright 2012 Jochen Topf <jochen@topf.org>.
This file is part of Tagstats.
Tagstats is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Tagstats is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Tagstats. If not, see <http://www.gnu.org/licenses/>.
*/
#include <boost/foreach.hpp>
#include "sqlite.hpp"
/**
* Osmium handler that collects basic statistics from OSM data and
* writes it to a Sqlite database.
*/
class StatisticsHandler : public Osmium::Handler::Base {
public:
StatisticsHandler(Sqlite::Database& database) :
Base(),
m_database(database) {
// if you change anything in this array, also change the corresponding struct below
static const char *sn[] = {
"nodes",
"nodes_without_tags",
"node_tags",
"max_node_id",
"max_tags_on_node",
"ways",
"way_tags",
"way_nodes",
"way_nodes_consecutive",
"way_nodes_within_127",
"way_nodes_within_32767",
"max_way_id",
"max_tags_on_way",
"max_nodes_on_way",
"closed_ways",
"relations",
"relation_tags",
"relation_members",
"relation_member_nodes",
"relation_member_ways",
"relation_member_relations",
"max_relation_id",
"max_tags_on_relation",
"max_members_on_relation",
"max_user_id",
"anon_user_objects",
"max_node_version",
"max_way_version",
"max_relation_version",
"sum_node_version",
"sum_way_version",
"sum_relation_version",
"max_changeset_id",
0 // last element (sentinel) must always be 0
};
m_stat_names = sn;
// initialize all statistics to zero
for (int i=0; m_stat_names[i]; ++i) {
reinterpret_cast<uint64_t*>(&m_stats)[i] = 0;
}
}
void node(const shared_ptr<Osmium::OSM::Node const>& node) {
update_common_stats(*node);
m_stats.nodes++;
if (m_tag_count == 0) {
m_stats.nodes_without_tags++;
}
if (m_id > static_cast<int64_t>(m_stats.max_node_id)) {
m_stats.max_node_id = m_id;
}
m_stats.node_tags += m_tag_count;
if (m_tag_count > static_cast<int64_t>(m_stats.max_tags_on_node)) {
m_stats.max_tags_on_node = m_tag_count;
}
if (m_version > static_cast<int64_t>(m_stats.max_node_version)) {
m_stats.max_node_version = m_version;
}
m_stats.sum_node_version += m_version;
}
void way(const shared_ptr<Osmium::OSM::Way const>& way) {
update_common_stats(*way);
m_stats.ways++;
if (way->is_closed()) {
m_stats.closed_ways++;
}
if (m_id > static_cast<int64_t>(m_stats.max_way_id)) {
m_stats.max_way_id = m_id;
}
m_stats.way_tags += m_tag_count;
m_stats.way_nodes += way->nodes().size();
if (m_tag_count > static_cast<int64_t>(m_stats.max_tags_on_way)) {
m_stats.max_tags_on_way = m_tag_count;
}
if (way->nodes().size() > static_cast<int64_t>(m_stats.max_nodes_on_way)) {
m_stats.max_nodes_on_way = way->nodes().size();
}
if (m_version > static_cast<int64_t>(m_stats.max_way_version)) {
m_stats.max_way_version = m_version;
}
m_stats.sum_way_version += m_version;
osm_object_id_t ref = 0;
BOOST_FOREACH(const Osmium::OSM::WayNode& wn, way->nodes()) {
osm_object_id_t diff = wn.ref() - ref;
if (diff == 1) {
++m_stats.way_nodes_consecutive;
} else if (diff <= 127) { // 2^7-1
++m_stats.way_nodes_within_127;
} else if (diff <= 32767) { // 2^15-1
++m_stats.way_nodes_within_32767;
}
ref = wn.ref();
}
}
void relation(const shared_ptr<Osmium::OSM::Relation const>& relation) {
update_common_stats(*relation);
m_stats.relations++;
if (m_id > static_cast<int64_t>(m_stats.max_relation_id)) {
m_stats.max_relation_id = m_id;
}
m_stats.relation_tags += m_tag_count;
osm_sequence_id_t member_count = relation->members().size();
m_stats.relation_members += member_count;
if (m_tag_count > static_cast<int64_t>(m_stats.max_tags_on_relation)) {
m_stats.max_tags_on_relation = m_tag_count;
}
if (member_count > static_cast<int64_t>(m_stats.max_members_on_relation)) {
m_stats.max_members_on_relation = member_count;
}
if (m_version > static_cast<int64_t>(m_stats.max_relation_version)) {
m_stats.max_relation_version = m_version;
}
m_stats.sum_relation_version += m_version;
BOOST_FOREACH(const Osmium::OSM::RelationMember& member, relation->members()) {
switch (member.type()) {
case 'n':
++m_stats.relation_member_nodes;
break;
case 'w':
++m_stats.relation_member_ways;
break;
case 'r':
++m_stats.relation_member_relations;
break;
}
}
}
void final() {
Sqlite::Statement statement_insert_into_main_stats(m_database, "INSERT INTO stats (key, value) VALUES (?, ?);");
m_database.begin_transaction();
for (int i=0; m_stat_names[i]; ++i) {
statement_insert_into_main_stats
.bind_text(m_stat_names[i])
.bind_int64(reinterpret_cast<uint64_t*>(&m_stats)[i])
.execute();
}
statement_insert_into_main_stats
.bind_text("nodes_with_tags")
.bind_int64(m_stats.nodes - m_stats.nodes_without_tags)
.execute();
m_database.commit();
}
private:
// if you change anything in this struct, also change the corresponding array above
struct statistics {
uint64_t nodes;
uint64_t nodes_without_tags;
uint64_t node_tags;
uint64_t max_node_id;
uint64_t max_tags_on_node;
uint64_t ways;
uint64_t way_tags;
uint64_t way_nodes;
uint64_t way_nodes_consecutive;
uint64_t way_nodes_within_127;
uint64_t way_nodes_within_32767;
uint64_t max_way_id;
uint64_t max_tags_on_way;
uint64_t max_nodes_on_way;
uint64_t closed_ways;
uint64_t relations;
uint64_t relation_tags;
uint64_t relation_members;
uint64_t relation_member_nodes;
uint64_t relation_member_ways;
uint64_t relation_member_relations;
uint64_t max_relation_id;
uint64_t max_tags_on_relation;
uint64_t max_members_on_relation;
uint64_t max_user_id;
uint64_t anon_user_objects;
uint64_t max_node_version;
uint64_t max_way_version;
uint64_t max_relation_version;
uint64_t sum_node_version;
uint64_t sum_way_version;
uint64_t sum_relation_version;
uint64_t max_changeset_id;
} m_stats;
const char **m_stat_names;
Sqlite::Database& m_database;
osm_object_id_t m_id;
osm_version_t m_version;
int m_tag_count;
void update_common_stats(const Osmium::OSM::Object& object) {
m_id = object.id();
m_version = object.version();
m_tag_count = object.tags().size();
osm_user_id_t uid = object.uid();
if (uid == 0) {
m_stats.anon_user_objects++;
}
if (uid > static_cast<int64_t>(m_stats.max_user_id)) {
m_stats.max_user_id = uid;
}
osm_changeset_id_t changeset = object.changeset();
if (changeset > static_cast<int64_t>(m_stats.max_changeset_id)) {
m_stats.max_changeset_id = changeset;
}
}
}; // class StatisticsHandler
#endif // TAGSTATS_STATISTICS_HANDLER_HPP
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