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/**
* Common middle layer interface
* Each middle layer data store must provide methods for
* storing and retrieving node and way data.
*/
#ifndef MIDDLE_H
#define MIDDLE_H
#include <osmium/memory/buffer.hpp>
#include <cstddef>
#include <memory>
#include <osmium/thread/pool.hpp>
#include "osmtypes.hpp"
#include "reprojection.hpp"
struct options_t;
/**
* object which stores OSM node/ways/relations from the input file
*/
struct middle_query_t {
virtual ~middle_query_t() {}
/**
* Retrives node locations for the given node list.
*
* The locations are saved directly in the input list.
*/
virtual size_t nodes_get_list(osmium::WayNodeList *nodes) const = 0;
/**
* Retrives a single way from the ways storage
* and stores it in the given osmium buffer.
*
* \param id id of the way to retrive
* \param buffer osmium buffer where to put the way
*
* The function does not retrieve the node locations.
*
* \return true if the way was retrieved
*/
virtual bool ways_get(osmid_t id, osmium::memory::Buffer &buffer) const = 0;
/**
* Retrives the way members of a relation and stores them in
* the given osmium buffer.
*
* \param rel Relation to get the members for.
* \param[out] roles Roles for the ways that where retrived.
* \param[out] buffer Buffer where to store the members in.
*/
virtual size_t
rel_way_members_get(osmium::Relation const &rel, rolelist_t *roles,
osmium::memory::Buffer &buffer) const = 0;
/**
* Retrives a single relation from the relation storage
* and stores it in the given osmium buffer.
*
* \param id id of the relation to retrive
* \param buffer osmium buffer where to put the relation
*
* \return true if the relation was retrieved
*/
virtual bool relations_get(osmid_t id, osmium::memory::Buffer &buffer) const = 0;
/*
* Retrieve a list of relations with a particular way as a member
* \param way_id ID of the way to check
*/
virtual idlist_t relations_using_way(osmid_t way_id) const = 0;
virtual std::shared_ptr<const middle_query_t> get_instance() const = 0;
};
/**
* A specialized middle backend which is persistent, and supports updates
*/
struct middle_t : public middle_query_t {
static std::shared_ptr<middle_t> create_middle(bool slim);
virtual ~middle_t() {}
virtual void start(const options_t *out_options_) = 0;
virtual void stop(osmium::thread::Pool &pool) = 0;
virtual void analyze(void) = 0;
virtual void end(void) = 0;
virtual void commit(void) = 0;
virtual void nodes_set(osmium::Node const &node) = 0;
virtual void ways_set(osmium::Way const &way) = 0;
virtual void relations_set(osmium::Relation const &rel) = 0;
struct pending_processor {
virtual ~pending_processor() {}
virtual void enqueue_ways(osmid_t id) = 0;
virtual void process_ways() = 0;
virtual void enqueue_relations(osmid_t id) = 0;
virtual void process_relations() = 0;
};
virtual void iterate_ways(pending_processor& pf) = 0;
virtual void iterate_relations(pending_processor& pf) = 0;
virtual size_t pending_count() const = 0;
const options_t* out_options;
};
struct slim_middle_t : public middle_t {
virtual ~slim_middle_t() {}
virtual void nodes_delete(osmid_t id) = 0;
virtual void node_changed(osmid_t id) = 0;
virtual void ways_delete(osmid_t id) = 0;
virtual void way_changed(osmid_t id) = 0;
virtual void relations_delete(osmid_t id) = 0;
virtual void relation_changed(osmid_t id) = 0;
};
#endif
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