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osmchange_handler.cpp
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osmchange_handler.cpp
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#include "cgimap/http.hpp"
#include "cgimap/logger.hpp"
#include "cgimap/api06/changeset_upload/osmchange_handler.hpp"
#include <boost/format.hpp>
namespace api06 {
OSMChange_Handler::OSMChange_Handler(
std::unique_ptr<Node_Updater> _node_updater,
std::unique_ptr<Way_Updater> _way_updater,
std::unique_ptr<Relation_Updater> _relation_updater,
osm_changeset_id_t _changeset)
: node_updater(std::move(_node_updater)),
way_updater(std::move(_way_updater)),
relation_updater(std::move(_relation_updater)),
m_changeset(_changeset)
{}
void OSMChange_Handler::start_document() {}
void OSMChange_Handler::end_document() { finish_processing(); }
// checks common to all objects
void OSMChange_Handler::check_osm_object(const OSMObject &o) const {
if (o.changeset() != m_changeset)
throw http::conflict(
(boost::format(
"Changeset mismatch: Provided %1% but only %2% is allowed") %
o.changeset() % m_changeset)
.str());
}
void OSMChange_Handler::process_node(const Node &node, operation op,
bool if_unused) {
assert(op != operation::op_undefined);
check_osm_object(node);
switch (op) {
case operation::op_create:
handle_new_state(state::st_create_node);
node_updater->add_node(node.lat(), node.lon(), m_changeset, node.id(),
node.tags());
break;
case operation::op_modify:
handle_new_state(state::st_modify);
node_updater->modify_node(node.lat(), node.lon(), m_changeset, node.id(),
node.version(), node.tags());
break;
case operation::op_delete:
handle_new_state(state::st_delete_node);
node_updater->delete_node(m_changeset, node.id(), node.version(),
if_unused);
break;
default:
// handled by assertion
break;
}
}
void OSMChange_Handler::process_way(const Way &way, operation op,
bool if_unused) {
assert(op != operation::op_undefined);
check_osm_object(way);
switch (op) {
case operation::op_create:
handle_new_state(state::st_create_way);
way_updater->add_way(m_changeset, way.id(), way.nodes(), way.tags());
break;
case operation::op_modify:
handle_new_state(state::st_modify);
way_updater->modify_way(m_changeset, way.id(), way.version(), way.nodes(),
way.tags());
break;
case operation::op_delete:
handle_new_state(state::st_delete_way);
way_updater->delete_way(m_changeset, way.id(), way.version(), if_unused);
break;
default:
// handled by assertion
break;
}
}
void OSMChange_Handler::process_relation(const Relation &relation, operation op,
bool if_unused) {
assert(op != operation::op_undefined);
check_osm_object(relation);
switch (op) {
case operation::op_create:
handle_new_state(state::st_create_relation);
relation_updater->add_relation(m_changeset, relation.id(),
relation.members(), relation.tags());
break;
case operation::op_modify:
handle_new_state(state::st_modify);
relation_updater->modify_relation(m_changeset, relation.id(),
relation.version(), relation.members(),
relation.tags());
break;
case operation::op_delete:
handle_new_state(state::st_delete_relation);
relation_updater->delete_relation(m_changeset, relation.id(),
relation.version(), if_unused);
break;
default:
// handled by assertion
break;
}
}
void OSMChange_Handler::finish_processing() {
handle_new_state(state::st_finished);
}
uint32_t OSMChange_Handler::get_num_changes() {
return (node_updater->get_num_changes() + way_updater->get_num_changes() +
relation_updater->get_num_changes());
}
bbox_t OSMChange_Handler::get_bbox() {
bbox_t bbox;
bbox.expand(node_updater->bbox());
bbox.expand(way_updater->bbox());
bbox.expand(relation_updater->bbox());
return bbox;
}
void OSMChange_Handler::handle_new_state(state new_state) {
// TODO: add flush_limit to send data to db if too much memory is used for
// internal buffers
if (new_state == current_state /* && object_counter < flush_limit */)
return;
// process objects in buffer for the current state before doing a transition
// to the new state
switch (current_state) {
case state::st_initial:
// nothing to do
break;
case state::st_create_node:
node_updater->process_new_nodes();
break;
case state::st_create_way:
way_updater->process_new_ways();
break;
case state::st_create_relation:
relation_updater->process_new_relations();
break;
case state::st_modify:
node_updater->process_modify_nodes();
way_updater->process_modify_ways();
relation_updater->process_modify_relations();
break;
case state::st_delete_node:
node_updater->process_delete_nodes();
break;
case state::st_delete_way:
way_updater->process_delete_ways();
break;
case state::st_delete_relation:
relation_updater->process_delete_relations();
break;
case state::st_finished:
// nothing to do
break;
}
// complete transition to new state
current_state = new_state;
}
} // namespace api06