1 // NavDataCache.cxx - defines a unified binary cache for navigation
2 // data, parsed from various text / XML sources.
4 // Written by James Turner, started 2012.
6 // Copyright (C) 2012 James Turner
8 // This program is free software; you can redistribute it and/or
9 // modify it under the terms of the GNU General Public License as
10 // published by the Free Software Foundation; either version 2 of the
11 // License, or (at your option) any later version.
13 // This program is distributed in the hope that it will be useful, but
14 // WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 // General Public License for more details.
18 // You should have received a copy of the GNU General Public License
19 // along with this program; if not, write to the Free Software
20 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
26 // to ensure compatability between sqlite3_int64 and PositionedID,
27 // force the type used by sqlite to match PositionedID explicitly
28 #define SQLITE_INT64_TYPE int64_t
29 #define SQLITE_UINT64_TYPE uint64_t
31 #include "NavDataCache.hxx"
36 #include <stdint.h> // for int64_t
38 #include <boost/foreach.hpp>
43 #include <simgear/structure/exception.hxx>
44 #include <simgear/debug/logstream.hxx>
45 #include <simgear/bucket/newbucket.hxx>
46 #include <simgear/misc/sg_path.hxx>
47 #include <simgear/misc/strutils.hxx>
49 #include <Main/globals.hxx>
50 #include "markerbeacon.hxx"
51 #include "navrecord.hxx"
52 #include <Airports/simple.hxx>
53 #include <Airports/runways.hxx>
54 #include <ATC/CommStation.hxx>
56 #include <Navaids/fixlist.hxx>
57 #include <Navaids/navdb.hxx>
58 #include "PositionedOctree.hxx"
59 #include <Airports/apt_loader.hxx>
60 #include <Navaids/airways.hxx>
64 #define SG_NAVCACHE SG_GENERAL
65 //#define LAZY_OCTREE_UPDATES 1
69 const int SCHEMA_VERSION = 3;
71 // bind a std::string to a sqlite statement. The std::string must live the
72 // entire duration of the statement execution - do not pass a temporary
73 // std::string, or the compiler may delete it, freeing the C-string storage,
74 // and causing subtle memory corruption bugs!
75 void sqlite_bind_stdstring(sqlite3_stmt* stmt, int value, const std::string& s)
77 sqlite3_bind_text(stmt, value, s.c_str(), s.length(), SQLITE_STATIC);
80 // variant of the above, which does not care about the lifetime of the
82 void sqlite_bind_temp_stdstring(sqlite3_stmt* stmt, int value, const std::string& s)
84 sqlite3_bind_text(stmt, value, s.c_str(), s.length(), SQLITE_TRANSIENT);
87 typedef sqlite3_stmt* sqlite3_stmt_ptr;
89 void f_distanceCartSqrFunction(sqlite3_context* ctx, int argc, sqlite3_value* argv[])
95 SGVec3d posA(sqlite3_value_double(argv[0]),
96 sqlite3_value_double(argv[1]),
97 sqlite3_value_double(argv[2]));
99 SGVec3d posB(sqlite3_value_double(argv[3]),
100 sqlite3_value_double(argv[4]),
101 sqlite3_value_double(argv[5]));
102 sqlite3_result_double(ctx, distSqr(posA, posB));
106 static string cleanRunwayNo(const string& aRwyNo)
108 if (aRwyNo[0] == 'x') {
109 return string(); // no ident for taxiways
112 string result(aRwyNo);
113 // canonicalise runway ident
114 if ((aRwyNo.size() == 1) || !isdigit(aRwyNo[1])) {
115 result = "0" + aRwyNo;
118 // trim off trailing garbage
119 if (result.size() > 2) {
120 char suffix = toupper(result[2]);
122 result = result.substr(0, 2);
129 } // anonymous namespace
134 typedef std::map<PositionedID, FGPositionedRef> PositionedCache;
136 class AirportTower : public FGPositioned
139 AirportTower(PositionedID& guid, PositionedID airport,
140 const string& ident, const SGGeod& pos) :
141 FGPositioned(guid, FGPositioned::TOWER, ident, pos)
146 class NavDataCache::NavDataCachePrivate
149 NavDataCachePrivate(const SGPath& p, NavDataCache* o) :
158 ~NavDataCachePrivate()
160 BOOST_FOREACH(sqlite3_stmt_ptr stmt, prepared) {
161 sqlite3_finalize(stmt);
170 SG_LOG(SG_NAVCACHE, SG_INFO, "NavCache at:" << path);
171 sqlite3_open_v2(path.c_str(), &db,
172 SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, NULL);
175 sqlite3_stmt_ptr checkTables =
176 prepare("SELECT count(*) FROM sqlite_master WHERE name='properties'");
178 sqlite3_create_function(db, "distanceCartSqr", 6, SQLITE_ANY, NULL,
179 f_distanceCartSqrFunction, NULL, NULL);
181 execSelect(checkTables);
182 bool didCreate = false;
183 if (sqlite3_column_int(checkTables, 0) == 0) {
184 SG_LOG(SG_NAVCACHE, SG_INFO, "will create tables");
189 readPropertyQuery = prepare("SELECT value FROM properties WHERE key=?");
190 writePropertyQuery = prepare("INSERT OR REPLACE INTO properties "
191 "(key, value) VALUES (?,?)");
194 writeIntProperty("schema-version", SCHEMA_VERSION);
196 int schemaVersion = outer->readIntProperty("schema-version");
197 if (schemaVersion != SCHEMA_VERSION) {
198 SG_LOG(SG_NAVCACHE, SG_INFO, "Navcache schema mismatch, will rebuild");
199 throw sg_exception("Navcache schema has changed");
206 void checkCacheFile()
208 SG_LOG(SG_NAVCACHE, SG_INFO, "running DB integrity check");
212 sqlite3_stmt_ptr stmt = prepare("PRAGMA integrity_check(1)");
213 if (!execSelect(stmt)) {
214 throw sg_exception("DB integrity check failed to run");
217 string v = (char*) sqlite3_column_text(stmt, 0);
219 throw sg_exception("DB integrity check returned:" + v);
222 SG_LOG(SG_NAVCACHE, SG_INFO, "NavDataCache integrity check took:" << st.elapsedMSec());
226 void callSqlite(int result, const string& sql)
228 if (result == SQLITE_OK)
232 if (result == SQLITE_MISUSE) {
233 errMsg = "Sqlite API abuse";
234 SG_LOG(SG_NAVCACHE, SG_ALERT, "Sqlite API abuse");
236 errMsg = sqlite3_errmsg(db);
237 SG_LOG(SG_NAVCACHE, SG_ALERT, "Sqlite error:" << errMsg << " running:\n\t" << sql);
240 throw sg_exception("Sqlite error:" + errMsg, sql);
243 void runSQL(const string& sql)
245 sqlite3_stmt_ptr stmt;
246 callSqlite(sqlite3_prepare_v2(db, sql.c_str(), sql.length(), &stmt, NULL), sql);
250 } catch (sg_exception& e) {
251 sqlite3_finalize(stmt);
255 sqlite3_finalize(stmt);
258 sqlite3_stmt_ptr prepare(const string& sql)
260 sqlite3_stmt_ptr stmt;
261 callSqlite(sqlite3_prepare_v2(db, sql.c_str(), sql.length(), &stmt, NULL), sql);
262 prepared.push_back(stmt);
266 void finalize(sqlite3_stmt_ptr s)
268 StmtVec::iterator it = std::find(prepared.begin(), prepared.end(), s);
269 if (it == prepared.end()) {
270 throw sg_exception("Finalising statement that was not prepared");
277 void reset(sqlite3_stmt_ptr stmt)
280 if (sqlite3_reset(stmt) != SQLITE_OK) {
281 string errMsg = sqlite3_errmsg(db);
282 SG_LOG(SG_NAVCACHE, SG_ALERT, "Sqlite error resetting:" << errMsg);
283 throw sg_exception("Sqlite error resetting:" + errMsg, sqlite3_sql(stmt));
287 bool execSelect(sqlite3_stmt_ptr stmt)
289 return stepSelect(stmt);
292 bool stepSelect(sqlite3_stmt_ptr stmt)
294 int result = sqlite3_step(stmt);
295 if (result == SQLITE_ROW) {
296 return true; // at least one result row
299 if (result == SQLITE_DONE) {
300 return false; // no result rows
304 if (result == SQLITE_MISUSE) {
305 errMsg = "Sqlite API abuse";
306 SG_LOG(SG_NAVCACHE, SG_ALERT, "Sqlite API abuse");
308 errMsg = sqlite3_errmsg(db);
309 SG_LOG(SG_NAVCACHE, SG_ALERT, "Sqlite error:" << errMsg
310 << " while running:\n\t" << sqlite3_sql(stmt));
313 throw sg_exception("Sqlite error:" + errMsg, sqlite3_sql(stmt));
316 void execSelect1(sqlite3_stmt_ptr stmt)
318 if (!execSelect(stmt)) {
319 SG_LOG(SG_NAVCACHE, SG_WARN, "empty SELECT running:\n\t" << sqlite3_sql(stmt));
320 throw sg_exception("no results returned for select", sqlite3_sql(stmt));
324 sqlite3_int64 execInsert(sqlite3_stmt_ptr stmt)
327 return sqlite3_last_insert_rowid(db);
330 void execUpdate(sqlite3_stmt_ptr stmt)
337 runSQL("CREATE TABLE properties ("
342 runSQL("CREATE TABLE stat_cache ("
343 "path VARCHAR unique,"
347 runSQL("CREATE TABLE positioned ("
349 "ident VARCHAR collate nocase,"
350 "name VARCHAR collate nocase,"
361 runSQL("CREATE INDEX pos_octree ON positioned(octree_node)");
362 runSQL("CREATE INDEX pos_ident ON positioned(ident collate nocase)");
363 runSQL("CREATE INDEX pos_name ON positioned(name collate nocase)");
364 // allow efficient querying of 'all ATIS at this airport' or
365 // 'all towers at this airport'
366 runSQL("CREATE INDEX pos_apt_type ON positioned(airport, type)");
368 runSQL("CREATE TABLE airport ("
373 runSQL("CREATE TABLE comm ("
379 runSQL("CREATE INDEX comm_freq ON comm(freq_khz)");
381 runSQL("CREATE TABLE runway ("
386 "displaced_threshold FLOAT,"
393 runSQL("CREATE TABLE navaid ("
402 runSQL("CREATE INDEX navaid_freq ON navaid(freq)");
404 runSQL("CREATE TABLE octree (children INT)");
406 runSQL("CREATE TABLE airway ("
407 "ident VARCHAR collate nocase,"
408 "network INT" // high-level or low-level
411 runSQL("CREATE INDEX airway_ident ON airway(ident)");
413 runSQL("CREATE TABLE airway_edge ("
420 runSQL("CREATE INDEX airway_edge_from ON airway_edge(a)");
423 void prepareQueries()
425 #define POSITIONED_COLS "rowid, type, ident, name, airport, lon, lat, elev_m, octree_node"
426 #define AND_TYPED "AND type>=?2 AND type <=?3"
427 statCacheCheck = prepare("SELECT stamp FROM stat_cache WHERE path=?");
428 stampFileCache = prepare("INSERT OR REPLACE INTO stat_cache "
429 "(path, stamp) VALUES (?,?)");
431 loadPositioned = prepare("SELECT " POSITIONED_COLS " FROM positioned WHERE rowid=?");
432 loadAirportStmt = prepare("SELECT has_metar FROM airport WHERE rowid=?");
433 loadNavaid = prepare("SELECT range_nm, freq, multiuse, runway, colocated FROM navaid WHERE rowid=?");
434 loadCommStation = prepare("SELECT freq_khz, range_nm FROM comm WHERE rowid=?");
435 loadRunwayStmt = prepare("SELECT heading, length_ft, width_m, surface, displaced_threshold,"
436 "stopway, reciprocal, ils FROM runway WHERE rowid=?1");
438 getAirportItems = prepare("SELECT rowid FROM positioned WHERE airport=?1 " AND_TYPED);
441 setAirportMetar = prepare("UPDATE airport SET has_metar=?2 WHERE rowid="
442 "(SELECT rowid FROM positioned WHERE ident=?1 AND type>=?3 AND type <=?4)");
443 sqlite3_bind_int(setAirportMetar, 3, FGPositioned::AIRPORT);
444 sqlite3_bind_int(setAirportMetar, 4, FGPositioned::SEAPORT);
446 setRunwayReciprocal = prepare("UPDATE runway SET reciprocal=?2 WHERE rowid=?1");
447 setRunwayILS = prepare("UPDATE runway SET ils=?2 WHERE rowid=?1");
448 updateRunwayThreshold = prepare("UPDATE runway SET heading=?2, displaced_threshold=?3, stopway=?4 WHERE rowid=?1");
450 insertPositionedQuery = prepare("INSERT INTO positioned "
451 "(type, ident, name, airport, lon, lat, elev_m, octree_node, "
452 "cart_x, cart_y, cart_z)"
453 " VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7, ?8, ?9, ?10, ?11)");
455 setAirportPos = prepare("UPDATE positioned SET lon=?2, lat=?3, elev_m=?4, octree_node=?5, "
456 "cart_x=?6, cart_y=?7, cart_z=?8 WHERE rowid=?1");
457 insertAirport = prepare("INSERT INTO airport (rowid, has_metar) VALUES (?, ?)");
458 insertNavaid = prepare("INSERT INTO navaid (rowid, freq, range_nm, multiuse, runway, colocated)"
459 " VALUES (?1, ?2, ?3, ?4, ?5, ?6)");
460 updateILS = prepare("UPDATE navaid SET multiuse=?2 WHERE rowid=?1");
462 insertCommStation = prepare("INSERT INTO comm (rowid, freq_khz, range_nm)"
463 " VALUES (?, ?, ?)");
464 insertRunway = prepare("INSERT INTO runway "
465 "(rowid, heading, length_ft, width_m, surface, displaced_threshold, stopway, reciprocal)"
466 " VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7, ?8)");
467 runwayLengthFtQuery = prepare("SELECT length_ft FROM runway WHERE rowid=?1");
470 findClosestWithIdent = prepare("SELECT rowid FROM positioned WHERE ident=?1 "
471 AND_TYPED " ORDER BY distanceCartSqr(cart_x, cart_y, cart_z, ?4, ?5, ?6)");
473 findCommByFreq = prepare("SELECT positioned.rowid FROM positioned, comm WHERE "
474 "positioned.rowid=comm.rowid AND freq_khz=?1 "
475 AND_TYPED " ORDER BY distanceCartSqr(cart_x, cart_y, cart_z, ?4, ?5, ?6)");
477 findNavsByFreq = prepare("SELECT positioned.rowid FROM positioned, navaid WHERE "
478 "positioned.rowid=navaid.rowid "
479 "AND navaid.freq=?1 " AND_TYPED
480 " ORDER BY distanceCartSqr(cart_x, cart_y, cart_z, ?4, ?5, ?6)");
482 findNavsByFreqNoPos = prepare("SELECT positioned.rowid FROM positioned, navaid WHERE "
483 "positioned.rowid=navaid.rowid AND freq=?1 " AND_TYPED);
485 // for an octree branch, return the child octree nodes which exist,
486 // described as a bit-mask
487 getOctreeChildren = prepare("SELECT children FROM octree WHERE rowid=?1");
489 #ifdef LAZY_OCTREE_UPDATES
490 updateOctreeChildren = prepare("UPDATE octree SET children=?2 WHERE rowid=?1");
492 // mask the new child value into the existing one
493 updateOctreeChildren = prepare("UPDATE octree SET children=(?2 | children) WHERE rowid=?1");
496 // define a new octree node (with no children)
497 insertOctree = prepare("INSERT INTO octree (rowid, children) VALUES (?1, 0)");
499 getOctreeLeafChildren = prepare("SELECT rowid, type FROM positioned WHERE octree_node=?1");
501 searchAirports = prepare("SELECT ident, name FROM positioned WHERE (name LIKE ?1 OR ident LIKE ?1) " AND_TYPED);
502 sqlite3_bind_int(searchAirports, 2, FGPositioned::AIRPORT);
503 sqlite3_bind_int(searchAirports, 3, FGPositioned::SEAPORT);
505 getAirportItemByIdent = prepare("SELECT rowid FROM positioned WHERE airport=?1 AND ident=?2 AND type=?3");
507 findAirportRunway = prepare("SELECT airport, rowid FROM positioned WHERE ident=?2 AND type=?3 AND airport="
508 "(SELECT rowid FROM positioned WHERE type=?4 AND ident=?1)");
509 sqlite3_bind_int(findAirportRunway, 3, FGPositioned::RUNWAY);
510 sqlite3_bind_int(findAirportRunway, 4, FGPositioned::AIRPORT);
512 // three-way join to get the navaid ident and runway ident in a single select.
513 // we're joining positioned to itself by the navaid runway, with the complication
514 // that we need to join the navaids table to get the runway ID.
515 // we also need to filter by type to excluse glideslope (GS) matches
516 findILS = prepare("SELECT nav.rowid FROM positioned AS nav, positioned AS rwy, navaid WHERE "
517 "nav.ident=?1 AND nav.airport=?2 AND rwy.ident=?3 "
518 "AND rwy.rowid = navaid.runway AND navaid.rowid=nav.rowid "
519 "AND (nav.type=?4 OR nav.type=?5)");
521 sqlite3_bind_int(findILS, 4, FGPositioned::ILS);
522 sqlite3_bind_int(findILS, 5, FGPositioned::LOC);
524 findAirway = prepare("SELECT rowid FROM airway WHERE network=?1 AND ident=?2");
525 insertAirway = prepare("INSERT INTO airway (ident, network) "
528 insertAirwayEdge = prepare("INSERT INTO airway_edge (network, airway, a, b) "
529 "VALUES (?1, ?2, ?3, ?4)");
531 isPosInAirway = prepare("SELECT rowid FROM airway_edge WHERE network=?1 AND a=?2");
533 airwayEdgesFrom = prepare("SELECT airway, b FROM airway_edge WHERE network=?1 AND a=?2");
536 void writeIntProperty(const string& key, int value)
538 sqlite_bind_stdstring(writePropertyQuery, 1, key);
539 sqlite3_bind_int(writePropertyQuery, 2, value);
540 execSelect(writePropertyQuery);
544 FGPositioned* loadFromStmt(sqlite3_stmt_ptr query);
546 FGAirport* loadAirport(sqlite_int64 rowId,
547 FGPositioned::Type ty,
548 const string& id, const string& name, const SGGeod& pos)
550 reset(loadAirportStmt);
551 sqlite3_bind_int64(loadAirportStmt, 1, rowId);
552 execSelect1(loadAirportStmt);
553 bool hasMetar = sqlite3_column_int(loadAirportStmt, 0);
554 return new FGAirport(rowId, id, pos, name, hasMetar, ty);
557 FGRunwayBase* loadRunway(sqlite3_int64 rowId, FGPositioned::Type ty,
558 const string& id, const SGGeod& pos, PositionedID apt)
560 reset(loadRunwayStmt);
561 sqlite3_bind_int(loadRunwayStmt, 1, rowId);
562 execSelect1(loadRunwayStmt);
564 double heading = sqlite3_column_double(loadRunwayStmt, 0);
565 double lengthM = sqlite3_column_int(loadRunwayStmt, 1);
566 double widthM = sqlite3_column_double(loadRunwayStmt, 2);
567 int surface = sqlite3_column_int(loadRunwayStmt, 3);
569 if (ty == FGPositioned::TAXIWAY) {
570 return new FGTaxiway(rowId, id, pos, heading, lengthM, widthM, surface);
572 double displacedThreshold = sqlite3_column_double(loadRunwayStmt, 4);
573 double stopway = sqlite3_column_double(loadRunwayStmt, 5);
574 PositionedID reciprocal = sqlite3_column_int64(loadRunwayStmt, 6);
575 PositionedID ils = sqlite3_column_int64(loadRunwayStmt, 7);
576 FGRunway* r = new FGRunway(rowId, apt, id, pos, heading, lengthM, widthM,
577 displacedThreshold, stopway, surface, false);
579 if (reciprocal > 0) {
580 r->setReciprocalRunway(reciprocal);
591 CommStation* loadComm(sqlite3_int64 rowId, FGPositioned::Type ty,
592 const string& id, const string& name,
594 PositionedID airport)
596 reset(loadCommStation);
597 sqlite3_bind_int64(loadCommStation, 1, rowId);
598 execSelect1(loadCommStation);
600 int range = sqlite3_column_int(loadCommStation, 0);
601 int freqKhz = sqlite3_column_int(loadCommStation, 1);
603 CommStation* c = new CommStation(rowId, id, ty, pos, freqKhz, range);
604 c->setAirport(airport);
608 FGPositioned* loadNav(sqlite3_int64 rowId,
609 FGPositioned::Type ty, const string& id,
610 const string& name, const SGGeod& pos)
613 sqlite3_bind_int64(loadNavaid, 1, rowId);
614 execSelect1(loadNavaid);
616 PositionedID runway = sqlite3_column_int64(loadNavaid, 3);
617 // marker beacons are light-weight
618 if ((ty == FGPositioned::OM) || (ty == FGPositioned::IM) ||
619 (ty == FGPositioned::MM))
621 return new FGMarkerBeaconRecord(rowId, ty, runway, pos);
624 int rangeNm = sqlite3_column_int(loadNavaid, 0),
625 freq = sqlite3_column_int(loadNavaid, 1);
626 double mulituse = sqlite3_column_double(loadNavaid, 2);
627 //sqlite3_int64 colocated = sqlite3_column_int64(loadNavaid, 4);
629 return new FGNavRecord(rowId, ty, id, name, pos, freq, rangeNm, mulituse, runway);
632 PositionedID insertPositioned(FGPositioned::Type ty, const string& ident,
633 const string& name, const SGGeod& pos, PositionedID apt,
636 SGVec3d cartPos(SGVec3d::fromGeod(pos));
638 reset(insertPositionedQuery);
639 sqlite3_bind_int(insertPositionedQuery, 1, ty);
640 sqlite_bind_stdstring(insertPositionedQuery, 2, ident);
641 sqlite_bind_stdstring(insertPositionedQuery, 3, name);
642 sqlite3_bind_int64(insertPositionedQuery, 4, apt);
643 sqlite3_bind_double(insertPositionedQuery, 5, pos.getLongitudeDeg());
644 sqlite3_bind_double(insertPositionedQuery, 6, pos.getLatitudeDeg());
645 sqlite3_bind_double(insertPositionedQuery, 7, pos.getElevationM());
648 Octree::Leaf* octreeLeaf = Octree::global_spatialOctree->findLeafForPos(cartPos);
649 assert(intersects(octreeLeaf->bbox(), cartPos));
650 sqlite3_bind_int64(insertPositionedQuery, 8, octreeLeaf->guid());
652 sqlite3_bind_null(insertPositionedQuery, 8);
655 sqlite3_bind_double(insertPositionedQuery, 9, cartPos.x());
656 sqlite3_bind_double(insertPositionedQuery, 10, cartPos.y());
657 sqlite3_bind_double(insertPositionedQuery, 11, cartPos.z());
659 PositionedID r = execInsert(insertPositionedQuery);
663 FGPositioned::List findAllByString(const string& s, const string& column,
664 FGPositioned::Filter* filter, bool exact)
667 if (!exact) query += "*";
669 // build up SQL query text
670 string matchTerm = exact ? "=?1" : " LIKE ?1";
671 string sql = "SELECT rowid FROM positioned WHERE " + column + matchTerm;
676 // find or prepare a suitable statement frrm the SQL
677 sqlite3_stmt_ptr stmt = findByStringDict[sql];
680 findByStringDict[sql] = stmt;
684 sqlite_bind_stdstring(stmt, 1, query);
686 sqlite3_bind_int(stmt, 2, filter->minType());
687 sqlite3_bind_int(stmt, 3, filter->maxType());
690 FGPositioned::List result;
691 // run the prepared SQL
692 while (stepSelect(stmt))
694 FGPositioned* pos = outer->loadById(sqlite3_column_int64(stmt, 0));
695 if (filter && !filter->pass(pos)) {
699 result.push_back(pos);
705 PositionedIDVec selectIds(sqlite3_stmt_ptr query)
707 PositionedIDVec result;
708 while (stepSelect(query)) {
709 result.push_back(sqlite3_column_int64(query, 0));
714 double runwayLengthFt(PositionedID rwy)
716 reset(runwayLengthFtQuery);
717 sqlite3_bind_int64(runwayLengthFtQuery, 1, rwy);
718 execSelect1(runwayLengthFtQuery);
719 return sqlite3_column_double(runwayLengthFtQuery, 0);
722 void flushDeferredOctreeUpdates()
724 BOOST_FOREACH(Octree::Branch* nd, deferredOctreeUpdates) {
725 reset(updateOctreeChildren);
726 sqlite3_bind_int64(updateOctreeChildren, 1, nd->guid());
727 sqlite3_bind_int(updateOctreeChildren, 2, nd->childMask());
728 execUpdate(updateOctreeChildren);
731 deferredOctreeUpdates.clear();
738 /// the actual cache of ID -> instances. This holds an owning reference,
739 /// so once items are in the cache they will never be deleted until
740 /// the cache drops its reference
741 PositionedCache cache;
742 unsigned int cacheHits, cacheMisses;
744 SGPath aptDatPath, metarDatPath, navDatPath, fixDatPath,
745 carrierDatPath, airwayDatPath;
747 sqlite3_stmt_ptr readPropertyQuery, writePropertyQuery,
748 stampFileCache, statCacheCheck,
749 loadAirportStmt, loadCommStation, loadPositioned, loadNavaid,
752 sqlite3_stmt_ptr insertPositionedQuery, insertAirport, insertTower, insertRunway,
753 insertCommStation, insertNavaid;
754 sqlite3_stmt_ptr setAirportMetar, setRunwayReciprocal, setRunwayILS,
755 setAirportPos, updateRunwayThreshold, updateILS;
757 sqlite3_stmt_ptr findClosestWithIdent;
758 // octree (spatial index) related queries
759 sqlite3_stmt_ptr getOctreeChildren, insertOctree, updateOctreeChildren,
760 getOctreeLeafChildren;
762 sqlite3_stmt_ptr searchAirports;
763 sqlite3_stmt_ptr findCommByFreq, findNavsByFreq,
765 sqlite3_stmt_ptr getAirportItems, getAirportItemByIdent;
766 sqlite3_stmt_ptr findAirportRunway,
769 sqlite3_stmt_ptr runwayLengthFtQuery;
772 sqlite3_stmt_ptr findAirway, insertAirwayEdge, isPosInAirway, airwayEdgesFrom,
775 // since there's many permutations of ident/name queries, we create
776 // them programtically, but cache the exact query by its raw SQL once
778 std::map<string, sqlite3_stmt_ptr> findByStringDict;
780 typedef std::vector<sqlite3_stmt_ptr> StmtVec;
783 std::set<Octree::Branch*> deferredOctreeUpdates;
786 //////////////////////////////////////////////////////////////////////
788 FGPositioned* NavDataCache::NavDataCachePrivate::loadFromStmt(sqlite3_stmt_ptr query)
791 sqlite3_int64 rowid = sqlite3_column_int64(query, 0);
792 FGPositioned::Type ty = (FGPositioned::Type) sqlite3_column_int(query, 1);
794 string ident = (char*) sqlite3_column_text(query, 2);
795 string name = (char*) sqlite3_column_text(query, 3);
796 sqlite3_int64 aptId = sqlite3_column_int64(query, 4);
797 double lon = sqlite3_column_double(query, 5);
798 double lat = sqlite3_column_double(query, 6);
799 double elev = sqlite3_column_double(query, 7);
800 SGGeod pos = SGGeod::fromDegM(lon, lat, elev);
803 case FGPositioned::AIRPORT:
804 case FGPositioned::SEAPORT:
805 case FGPositioned::HELIPORT:
806 return loadAirport(rowid, ty, ident, name, pos);
808 case FGPositioned::TOWER:
809 return new AirportTower(rowid, aptId, ident, pos);
811 case FGPositioned::RUNWAY:
812 case FGPositioned::TAXIWAY:
813 return loadRunway(rowid, ty, ident, pos, aptId);
815 case FGPositioned::LOC:
816 case FGPositioned::VOR:
817 case FGPositioned::GS:
818 case FGPositioned::ILS:
819 case FGPositioned::NDB:
820 case FGPositioned::OM:
821 case FGPositioned::MM:
822 case FGPositioned::IM:
823 case FGPositioned::DME:
824 case FGPositioned::TACAN:
825 case FGPositioned::MOBILE_TACAN:
828 FGAirport* apt = (FGAirport*) outer->loadById(aptId);
829 if (apt->validateILSData()) {
830 SG_LOG(SG_NAVCACHE, SG_INFO, "re-loaded ILS data for " << apt->ident());
831 // queried data above is probably invalid, force us to go around again
832 // (the next time through, validateILSData will return false)
833 return outer->loadById(rowid);
837 return loadNav(rowid, ty, ident, name, pos);
840 case FGPositioned::FIX:
841 return new FGFix(rowid, ident, pos);
843 case FGPositioned::WAYPOINT:
845 FGPositioned* wpt = new FGPositioned(rowid, FGPositioned::WAYPOINT, ident, pos);
849 case FGPositioned::FREQ_GROUND:
850 case FGPositioned::FREQ_TOWER:
851 case FGPositioned::FREQ_ATIS:
852 case FGPositioned::FREQ_AWOS:
853 case FGPositioned::FREQ_APP_DEP:
854 case FGPositioned::FREQ_ENROUTE:
855 case FGPositioned::FREQ_CLEARANCE:
856 case FGPositioned::FREQ_UNICOM:
857 return loadComm(rowid, ty, ident, name, pos, aptId);
865 static NavDataCache* static_instance = NULL;
867 NavDataCache::NavDataCache()
869 const int MAX_TRIES = 3;
870 SGPath homePath(globals->get_fg_home());
871 homePath.append("navdata.cache");
873 for (int t=0; t < MAX_TRIES; ++t) {
875 d.reset(new NavDataCachePrivate(homePath, this));
877 //d->checkCacheFile();
878 // reached this point with no exception, success
880 } catch (sg_exception& e) {
881 SG_LOG(SG_NAVCACHE, SG_WARN, "NavCache: init failed:" << e.what()
882 << " (attempt " << t << ")");
888 double RADIUS_EARTH_M = 7000 * 1000.0; // 7000km is plenty
889 SGVec3d earthExtent(RADIUS_EARTH_M, RADIUS_EARTH_M, RADIUS_EARTH_M);
890 Octree::global_spatialOctree =
891 new Octree::Branch(SGBox<double>(-earthExtent, earthExtent), 1);
893 d->aptDatPath = SGPath(globals->get_fg_root());
894 d->aptDatPath.append("Airports/apt.dat.gz");
896 d->metarDatPath = SGPath(globals->get_fg_root());
897 d->metarDatPath.append("Airports/metar.dat.gz");
899 d->navDatPath = SGPath(globals->get_fg_root());
900 d->navDatPath.append("Navaids/nav.dat.gz");
902 d->fixDatPath = SGPath(globals->get_fg_root());
903 d->fixDatPath.append("Navaids/fix.dat.gz");
905 d->carrierDatPath = SGPath(globals->get_fg_root());
906 d->carrierDatPath.append("Navaids/carrier_nav.dat.gz");
908 d->airwayDatPath = SGPath(globals->get_fg_root());
909 d->airwayDatPath.append("Navaids/awy.dat.gz");
912 NavDataCache::~NavDataCache()
914 assert(static_instance == this);
915 static_instance = NULL;
916 SG_LOG(SG_NAVCACHE, SG_INFO, "closing the navcache");
920 NavDataCache* NavDataCache::instance()
922 if (!static_instance) {
923 static_instance = new NavDataCache;
926 return static_instance;
929 bool NavDataCache::isRebuildRequired()
931 if (isCachedFileModified(d->aptDatPath) ||
932 isCachedFileModified(d->metarDatPath) ||
933 isCachedFileModified(d->navDatPath) ||
934 isCachedFileModified(d->fixDatPath) ||
935 isCachedFileModified(d->airwayDatPath))
937 SG_LOG(SG_NAVCACHE, SG_INFO, "NavCache: rebuild required");
941 SG_LOG(SG_NAVCACHE, SG_INFO, "NavCache: no rebuild required");
945 void NavDataCache::rebuild()
949 d->runSQL("DELETE FROM positioned");
950 d->runSQL("DELETE FROM airport");
951 d->runSQL("DELETE FROM runway");
952 d->runSQL("DELETE FROM navaid");
953 d->runSQL("DELETE FROM comm");
954 d->runSQL("DELETE FROM octree");
955 d->runSQL("DELETE FROM airway");
956 d->runSQL("DELETE FROM airway_edge");
958 // initialise the root octree node
959 d->runSQL("INSERT INTO octree (rowid, children) VALUES (1, 0)");
964 airportDBLoad(d->aptDatPath);
965 SG_LOG(SG_NAVCACHE, SG_INFO, "apt.dat load took:" << st.elapsedMSec());
967 metarDataLoad(d->metarDatPath);
968 stampCacheFile(d->aptDatPath);
969 stampCacheFile(d->metarDatPath);
972 loadFixes(d->fixDatPath);
973 stampCacheFile(d->fixDatPath);
974 SG_LOG(SG_NAVCACHE, SG_INFO, "fix.dat load took:" << st.elapsedMSec());
977 navDBInit(d->navDatPath);
978 stampCacheFile(d->navDatPath);
979 SG_LOG(SG_NAVCACHE, SG_INFO, "nav.dat load took:" << st.elapsedMSec());
981 loadCarrierNav(d->carrierDatPath);
982 stampCacheFile(d->carrierDatPath);
985 Airway::load(d->airwayDatPath);
986 stampCacheFile(d->airwayDatPath);
987 SG_LOG(SG_NAVCACHE, SG_INFO, "awy.dat load took:" << st.elapsedMSec());
989 d->flushDeferredOctreeUpdates();
992 } catch (sg_exception& e) {
993 SG_LOG(SG_NAVCACHE, SG_ALERT, "caught exception rebuilding navCache:" << e.what());
994 // abandon the DB transation completely
995 d->runSQL("ROLLBACK");
999 int NavDataCache::readIntProperty(const string& key)
1001 d->reset(d->readPropertyQuery);
1002 sqlite_bind_stdstring(d->readPropertyQuery, 1, key);
1004 if (d->execSelect(d->readPropertyQuery)) {
1005 return sqlite3_column_int(d->readPropertyQuery, 0);
1007 SG_LOG(SG_NAVCACHE, SG_WARN, "readIntProperty: unknown:" << key);
1008 return 0; // no such property
1012 double NavDataCache::readDoubleProperty(const string& key)
1014 d->reset(d->readPropertyQuery);
1015 sqlite_bind_stdstring(d->readPropertyQuery, 1, key);
1016 if (d->execSelect(d->readPropertyQuery)) {
1017 return sqlite3_column_double(d->readPropertyQuery, 0);
1019 SG_LOG(SG_NAVCACHE, SG_WARN, "readDoubleProperty: unknown:" << key);
1020 return 0.0; // no such property
1024 string NavDataCache::readStringProperty(const string& key)
1026 d->reset(d->readPropertyQuery);
1027 sqlite_bind_stdstring(d->readPropertyQuery, 1, key);
1028 if (d->execSelect(d->readPropertyQuery)) {
1029 return (char*) sqlite3_column_text(d->readPropertyQuery, 0);
1031 SG_LOG(SG_NAVCACHE, SG_WARN, "readStringProperty: unknown:" << key);
1032 return string(); // no such property
1036 void NavDataCache::writeIntProperty(const string& key, int value)
1038 d->writeIntProperty(key, value);
1041 void NavDataCache::writeStringProperty(const string& key, const string& value)
1043 d->reset(d->writePropertyQuery);
1044 sqlite_bind_stdstring(d->writePropertyQuery, 1, key);
1045 sqlite_bind_stdstring(d->writePropertyQuery, 2, value);
1046 d->execSelect(d->writePropertyQuery);
1049 void NavDataCache::writeDoubleProperty(const string& key, const double& value)
1051 d->reset(d->writePropertyQuery);
1052 sqlite_bind_stdstring(d->writePropertyQuery, 1, key);
1053 sqlite3_bind_double(d->writePropertyQuery, 2, value);
1054 d->execSelect(d->writePropertyQuery);
1058 bool NavDataCache::isCachedFileModified(const SGPath& path) const
1060 if (!path.exists()) {
1061 throw sg_io_exception("isCachedFileModified: Missing file:" + path.str());
1064 d->reset(d->statCacheCheck);
1065 sqlite_bind_temp_stdstring(d->statCacheCheck, 1, path.str());
1066 if (d->execSelect(d->statCacheCheck)) {
1067 time_t modtime = sqlite3_column_int64(d->statCacheCheck, 0);
1068 return (modtime != path.modTime());
1074 void NavDataCache::stampCacheFile(const SGPath& path)
1076 d->reset(d->stampFileCache);
1077 sqlite_bind_temp_stdstring(d->stampFileCache, 1, path.str());
1078 sqlite3_bind_int64(d->stampFileCache, 2, path.modTime());
1079 d->execInsert(d->stampFileCache);
1083 FGPositioned* NavDataCache::loadById(PositionedID rowid)
1089 PositionedCache::iterator it = d->cache.find(rowid);
1090 if (it != d->cache.end()) {
1092 return it->second; // cache it
1095 d->reset(d->loadPositioned);
1096 sqlite3_bind_int64(d->loadPositioned, 1, rowid);
1097 FGPositioned* pos = d->loadFromStmt(d->loadPositioned);
1099 d->cache.insert(it, PositionedCache::value_type(rowid, pos));
1105 PositionedID NavDataCache::insertAirport(FGPositioned::Type ty, const string& ident,
1108 // airports have their pos computed based on the avergae runway centres
1109 // so the pos isn't available immediately. Pass a dummy pos and avoid
1110 // doing spatial indexing until later
1111 sqlite3_int64 rowId = d->insertPositioned(ty, ident, name, SGGeod(),
1113 false /* spatial index */);
1115 d->reset(d->insertAirport);
1116 sqlite3_bind_int64(d->insertAirport, 1, rowId);
1117 d->execInsert(d->insertAirport);
1122 void NavDataCache::updatePosition(PositionedID item, const SGGeod &pos)
1124 SGVec3d cartPos(SGVec3d::fromGeod(pos));
1126 d->reset(d->setAirportPos);
1127 sqlite3_bind_int(d->setAirportPos, 1, item);
1128 sqlite3_bind_double(d->setAirportPos, 2, pos.getLongitudeDeg());
1129 sqlite3_bind_double(d->setAirportPos, 3, pos.getLatitudeDeg());
1130 sqlite3_bind_double(d->setAirportPos, 4, pos.getElevationM());
1132 Octree::Leaf* octreeLeaf = Octree::global_spatialOctree->findLeafForPos(cartPos);
1133 sqlite3_bind_int64(d->setAirportPos, 5, octreeLeaf->guid());
1135 sqlite3_bind_double(d->setAirportPos, 6, cartPos.x());
1136 sqlite3_bind_double(d->setAirportPos, 7, cartPos.y());
1137 sqlite3_bind_double(d->setAirportPos, 8, cartPos.z());
1140 d->execUpdate(d->setAirportPos);
1143 void NavDataCache::insertTower(PositionedID airportId, const SGGeod& pos)
1145 d->insertPositioned(FGPositioned::TOWER, string(), string(),
1146 pos, airportId, true /* spatial index */);
1150 NavDataCache::insertRunway(FGPositioned::Type ty, const string& ident,
1151 const SGGeod& pos, PositionedID apt,
1152 double heading, double length, double width, double displacedThreshold,
1153 double stopway, int surfaceCode)
1155 // only runways are spatially indexed; don't bother indexing taxiways
1157 bool spatialIndex = (ty == FGPositioned::RUNWAY);
1159 sqlite3_int64 rowId = d->insertPositioned(ty, cleanRunwayNo(ident), "", pos, apt,
1161 d->reset(d->insertRunway);
1162 sqlite3_bind_int64(d->insertRunway, 1, rowId);
1163 sqlite3_bind_double(d->insertRunway, 2, heading);
1164 sqlite3_bind_double(d->insertRunway, 3, length);
1165 sqlite3_bind_double(d->insertRunway, 4, width);
1166 sqlite3_bind_int(d->insertRunway, 5, surfaceCode);
1167 sqlite3_bind_double(d->insertRunway, 6, displacedThreshold);
1168 sqlite3_bind_double(d->insertRunway, 7, stopway);
1170 return d->execInsert(d->insertRunway);
1173 void NavDataCache::setRunwayReciprocal(PositionedID runway, PositionedID recip)
1175 d->reset(d->setRunwayReciprocal);
1176 sqlite3_bind_int64(d->setRunwayReciprocal, 1, runway);
1177 sqlite3_bind_int64(d->setRunwayReciprocal, 2, recip);
1178 d->execUpdate(d->setRunwayReciprocal);
1180 // and the opposite direction too!
1181 d->reset(d->setRunwayReciprocal);
1182 sqlite3_bind_int64(d->setRunwayReciprocal, 2, runway);
1183 sqlite3_bind_int64(d->setRunwayReciprocal, 1, recip);
1184 d->execUpdate(d->setRunwayReciprocal);
1187 void NavDataCache::setRunwayILS(PositionedID runway, PositionedID ils)
1189 d->reset(d->setRunwayILS);
1190 sqlite3_bind_int64(d->setRunwayILS, 1, runway);
1191 sqlite3_bind_int64(d->setRunwayILS, 2, ils);
1192 d->execUpdate(d->setRunwayILS);
1195 void NavDataCache::updateRunwayThreshold(PositionedID runwayID, const SGGeod &aThreshold,
1196 double aHeading, double aDisplacedThreshold,
1199 // update the runway information
1200 d->reset(d->updateRunwayThreshold);
1201 sqlite3_bind_int64(d->updateRunwayThreshold, 1, runwayID);
1202 sqlite3_bind_double(d->updateRunwayThreshold, 2, aHeading);
1203 sqlite3_bind_double(d->updateRunwayThreshold, 3, aDisplacedThreshold);
1204 sqlite3_bind_double(d->updateRunwayThreshold, 4, aStopway);
1205 d->execUpdate(d->updateRunwayThreshold);
1207 // compute the new runway center, based on the threshold lat/lon and length,
1208 double offsetFt = (0.5 * d->runwayLengthFt(runwayID));
1211 SGGeodesy::direct(aThreshold, aHeading, offsetFt * SG_FEET_TO_METER, newCenter, dummy);
1213 // now update the positional data
1214 updatePosition(runwayID, newCenter);
1218 NavDataCache::insertNavaid(FGPositioned::Type ty, const string& ident,
1219 const string& name, const SGGeod& pos,
1220 int freq, int range, double multiuse,
1221 PositionedID apt, PositionedID runway)
1223 bool spatialIndex = true;
1224 if (ty == FGPositioned::MOBILE_TACAN) {
1225 spatialIndex = false;
1228 sqlite3_int64 rowId = d->insertPositioned(ty, ident, name, pos, apt,
1230 d->reset(d->insertNavaid);
1231 sqlite3_bind_int64(d->insertNavaid, 1, rowId);
1232 sqlite3_bind_int(d->insertNavaid, 2, freq);
1233 sqlite3_bind_int(d->insertNavaid, 3, range);
1234 sqlite3_bind_double(d->insertNavaid, 4, multiuse);
1235 sqlite3_bind_int64(d->insertNavaid, 5, runway);
1236 return d->execInsert(d->insertNavaid);
1239 void NavDataCache::updateILS(PositionedID ils, const SGGeod& newPos, double aHdg)
1241 d->reset(d->updateILS);
1242 sqlite3_bind_int64(d->updateILS, 1, ils);
1243 sqlite3_bind_double(d->updateILS, 2, aHdg);
1244 d->execUpdate(d->updateILS);
1245 updatePosition(ils, newPos);
1248 PositionedID NavDataCache::insertCommStation(FGPositioned::Type ty,
1249 const string& name, const SGGeod& pos, int freq, int range,
1252 sqlite3_int64 rowId = d->insertPositioned(ty, "", name, pos, apt, true);
1253 d->reset(d->insertCommStation);
1254 sqlite3_bind_int64(d->insertCommStation, 1, rowId);
1255 sqlite3_bind_int(d->insertCommStation, 2, freq);
1256 sqlite3_bind_int(d->insertCommStation, 3, range);
1257 return d->execInsert(d->insertCommStation);
1260 PositionedID NavDataCache::insertFix(const std::string& ident, const SGGeod& aPos)
1262 return d->insertPositioned(FGPositioned::FIX, ident, string(), aPos, 0, true);
1265 PositionedID NavDataCache::createUserWaypoint(const std::string& ident, const SGGeod& aPos)
1267 return d->insertPositioned(FGPositioned::WAYPOINT, ident, string(), aPos, 0,
1268 true /* spatial index */);
1271 void NavDataCache::setAirportMetar(const string& icao, bool hasMetar)
1273 d->reset(d->setAirportMetar);
1274 sqlite_bind_stdstring(d->setAirportMetar, 1, icao);
1275 sqlite3_bind_int(d->setAirportMetar, 2, hasMetar);
1276 d->execUpdate(d->setAirportMetar);
1279 FGPositioned::List NavDataCache::findAllWithIdent(const string& s,
1280 FGPositioned::Filter* filter, bool exact)
1282 return d->findAllByString(s, "ident", filter, exact);
1285 FGPositioned::List NavDataCache::findAllWithName(const string& s,
1286 FGPositioned::Filter* filter, bool exact)
1288 return d->findAllByString(s, "name", filter, exact);
1291 FGPositionedRef NavDataCache::findClosestWithIdent(const string& aIdent,
1292 const SGGeod& aPos, FGPositioned::Filter* aFilter)
1294 d->reset(d->findClosestWithIdent);
1295 sqlite_bind_stdstring(d->findClosestWithIdent, 1, aIdent);
1297 sqlite3_bind_int(d->findClosestWithIdent, 2, aFilter->minType());
1298 sqlite3_bind_int(d->findClosestWithIdent, 3, aFilter->maxType());
1299 } else { // full type range
1300 sqlite3_bind_int(d->findClosestWithIdent, 2, FGPositioned::INVALID);
1301 sqlite3_bind_int(d->findClosestWithIdent, 3, FGPositioned::LAST_TYPE);
1304 SGVec3d cartPos(SGVec3d::fromGeod(aPos));
1305 sqlite3_bind_double(d->findClosestWithIdent, 4, cartPos.x());
1306 sqlite3_bind_double(d->findClosestWithIdent, 5, cartPos.y());
1307 sqlite3_bind_double(d->findClosestWithIdent, 6, cartPos.z());
1309 while (d->stepSelect(d->findClosestWithIdent)) {
1310 FGPositioned* pos = loadById(sqlite3_column_int64(d->findClosestWithIdent, 0));
1311 if (aFilter && !aFilter->pass(pos)) {
1318 return NULL; // no matches at all
1322 int NavDataCache::getOctreeBranchChildren(int64_t octreeNodeId)
1324 d->reset(d->getOctreeChildren);
1325 sqlite3_bind_int64(d->getOctreeChildren, 1, octreeNodeId);
1326 d->execSelect1(d->getOctreeChildren);
1327 return sqlite3_column_int(d->getOctreeChildren, 0);
1330 void NavDataCache::defineOctreeNode(Octree::Branch* pr, Octree::Node* nd)
1332 d->reset(d->insertOctree);
1333 sqlite3_bind_int64(d->insertOctree, 1, nd->guid());
1334 d->execInsert(d->insertOctree);
1336 #ifdef LAZY_OCTREE_UPDATES
1337 d->deferredOctreeUpdates.insert(pr);
1339 // lowest three bits of node ID are 0..7 index of the child in the parent
1340 int childIndex = nd->guid() & 0x07;
1342 d->reset(d->updateOctreeChildren);
1343 sqlite3_bind_int64(d->updateOctreeChildren, 1, pr->guid());
1344 // mask has bit N set where child N exists
1345 int childMask = 1 << childIndex;
1346 sqlite3_bind_int(d->updateOctreeChildren, 2, childMask);
1347 d->execUpdate(d->updateOctreeChildren);
1352 NavDataCache::getOctreeLeafChildren(int64_t octreeNodeId)
1354 d->reset(d->getOctreeLeafChildren);
1355 sqlite3_bind_int64(d->getOctreeLeafChildren, 1, octreeNodeId);
1357 TypedPositionedVec r;
1358 while (d->stepSelect(d->getOctreeLeafChildren)) {
1359 FGPositioned::Type ty = static_cast<FGPositioned::Type>
1360 (sqlite3_column_int(d->getOctreeLeafChildren, 1));
1361 r.push_back(std::make_pair(ty,
1362 sqlite3_column_int64(d->getOctreeLeafChildren, 0)));
1370 * A special purpose helper (used by FGAirport::searchNamesAndIdents) to
1371 * implement the AirportList dialog. It's unfortunate that it needs to reside
1372 * here, but for now it's least ugly solution.
1374 char** NavDataCache::searchAirportNamesAndIdents(const std::string& aFilter)
1376 d->reset(d->searchAirports);
1377 string s = "%" + aFilter + "%";
1378 sqlite_bind_stdstring(d->searchAirports, 1, s);
1380 unsigned int numMatches = 0, numAllocated = 16;
1381 char** result = (char**) malloc(sizeof(char*) * numAllocated);
1383 while (d->stepSelect(d->searchAirports)) {
1384 if ((numMatches + 1) >= numAllocated) {
1385 numAllocated <<= 1; // double in size!
1386 // reallocate results array
1387 char** nresult = (char**) malloc(sizeof(char*) * numAllocated);
1388 memcpy(nresult, result, sizeof(char*) * numMatches);
1393 // nasty code to avoid excessive string copying and allocations.
1394 // We format results as follows (note whitespace!):
1395 // ' name-of-airport-chars (ident)'
1396 // so the total length is:
1397 // 1 + strlen(name) + 4 + strlen(icao) + 1 + 1 (for the null)
1398 // which gives a grand total of 7 + name-length + icao-length.
1399 // note the ident can be three letters (non-ICAO local strip), four
1400 // (default ICAO) or more (extended format ICAO)
1401 int nameLength = sqlite3_column_bytes(d->searchAirports, 1);
1402 int icaoLength = sqlite3_column_bytes(d->searchAirports, 0);
1403 char* entry = (char*) malloc(7 + nameLength + icaoLength);
1406 memcpy(dst, sqlite3_column_text(d->searchAirports, 1), nameLength);
1412 memcpy(dst, sqlite3_column_text(d->searchAirports, 0), icaoLength);
1417 result[numMatches++] = entry;
1420 result[numMatches] = NULL; // end of list marker
1425 NavDataCache::findCommByFreq(int freqKhz, const SGGeod& aPos, FGPositioned::Filter* aFilter)
1427 d->reset(d->findCommByFreq);
1428 sqlite3_bind_int(d->findCommByFreq, 1, freqKhz);
1430 sqlite3_bind_int(d->findCommByFreq, 2, aFilter->minType());
1431 sqlite3_bind_int(d->findCommByFreq, 3, aFilter->maxType());
1432 } else { // full type range
1433 sqlite3_bind_int(d->findCommByFreq, 2, FGPositioned::FREQ_GROUND);
1434 sqlite3_bind_int(d->findCommByFreq, 3, FGPositioned::FREQ_UNICOM);
1437 SGVec3d cartPos(SGVec3d::fromGeod(aPos));
1438 sqlite3_bind_double(d->findCommByFreq, 4, cartPos.x());
1439 sqlite3_bind_double(d->findCommByFreq, 5, cartPos.y());
1440 sqlite3_bind_double(d->findCommByFreq, 6, cartPos.z());
1442 if (!d->execSelect(d->findCommByFreq)) {
1446 return loadById(sqlite3_column_int64(d->findCommByFreq, 0));
1450 NavDataCache::findNavaidsByFreq(int freqKhz, const SGGeod& aPos, FGPositioned::Filter* aFilter)
1452 d->reset(d->findNavsByFreq);
1453 sqlite3_bind_int(d->findNavsByFreq, 1, freqKhz);
1455 sqlite3_bind_int(d->findNavsByFreq, 2, aFilter->minType());
1456 sqlite3_bind_int(d->findNavsByFreq, 3, aFilter->maxType());
1457 } else { // full type range
1458 sqlite3_bind_int(d->findNavsByFreq, 2, FGPositioned::NDB);
1459 sqlite3_bind_int(d->findNavsByFreq, 3, FGPositioned::GS);
1462 SGVec3d cartPos(SGVec3d::fromGeod(aPos));
1463 sqlite3_bind_double(d->findNavsByFreq, 4, cartPos.x());
1464 sqlite3_bind_double(d->findNavsByFreq, 5, cartPos.y());
1465 sqlite3_bind_double(d->findNavsByFreq, 6, cartPos.z());
1467 return d->selectIds(d->findNavsByFreq);
1471 NavDataCache::findNavaidsByFreq(int freqKhz, FGPositioned::Filter* aFilter)
1473 d->reset(d->findNavsByFreqNoPos);
1474 sqlite3_bind_int(d->findNavsByFreqNoPos, 1, freqKhz);
1476 sqlite3_bind_int(d->findNavsByFreqNoPos, 2, aFilter->minType());
1477 sqlite3_bind_int(d->findNavsByFreqNoPos, 3, aFilter->maxType());
1478 } else { // full type range
1479 sqlite3_bind_int(d->findNavsByFreqNoPos, 2, FGPositioned::NDB);
1480 sqlite3_bind_int(d->findNavsByFreqNoPos, 3, FGPositioned::GS);
1483 return d->selectIds(d->findNavsByFreqNoPos);
1487 NavDataCache::airportItemsOfType(PositionedID apt,FGPositioned::Type ty,
1488 FGPositioned::Type maxTy)
1490 if (maxTy == FGPositioned::INVALID) {
1491 maxTy = ty; // single-type range
1494 d->reset(d->getAirportItems);
1495 sqlite3_bind_int64(d->getAirportItems, 1, apt);
1496 sqlite3_bind_int(d->getAirportItems, 2, ty);
1497 sqlite3_bind_int(d->getAirportItems, 3, maxTy);
1499 return d->selectIds(d->getAirportItems);
1503 NavDataCache::airportItemWithIdent(PositionedID apt, FGPositioned::Type ty,
1504 const std::string& ident)
1506 d->reset(d->getAirportItemByIdent);
1507 sqlite3_bind_int64(d->getAirportItemByIdent, 1, apt);
1508 sqlite_bind_stdstring(d->getAirportItemByIdent, 2, ident);
1509 sqlite3_bind_int(d->getAirportItemByIdent, 3, ty);
1511 if (!d->execSelect(d->getAirportItemByIdent)) {
1515 return sqlite3_column_int64(d->getAirportItemByIdent, 0);
1519 NavDataCache::findAirportRunway(const std::string& aName)
1521 if (aName.empty()) {
1522 return AirportRunwayPair();
1525 string_list parts = simgear::strutils::split(aName);
1526 if (parts.size() < 2) {
1527 SG_LOG(SG_NAVCACHE, SG_WARN, "findAirportRunway: malformed name:" << aName);
1528 return AirportRunwayPair();
1531 d->reset(d->findAirportRunway);
1532 sqlite_bind_stdstring(d->findAirportRunway, 1, parts[0]);
1533 sqlite_bind_stdstring(d->findAirportRunway, 2, parts[1]);
1534 if (!d->execSelect(d->findAirportRunway)) {
1535 SG_LOG(SG_NAVCACHE, SG_WARN, "findAirportRunway: unknown airport/runway:" << aName);
1536 return AirportRunwayPair();
1539 // success, extract the IDs and continue
1540 return AirportRunwayPair(sqlite3_column_int64(d->findAirportRunway, 0),
1541 sqlite3_column_int64(d->findAirportRunway, 1));
1545 NavDataCache::findILS(PositionedID airport, const string& runway, const string& navIdent)
1547 d->reset(d->findILS);
1548 sqlite_bind_stdstring(d->findILS, 1, navIdent);
1549 sqlite3_bind_int64(d->findILS, 2, airport);
1550 sqlite_bind_stdstring(d->findILS, 3, runway);
1552 if (!d->execSelect(d->findILS)) {
1556 return sqlite3_column_int64(d->findILS, 0);
1559 int NavDataCache::findAirway(int network, const string& aName)
1561 d->reset(d->findAirway);
1562 sqlite3_bind_int(d->findAirway, 1, network);
1563 sqlite_bind_stdstring(d->findAirway, 2, aName);
1564 if (d->execSelect(d->findAirway)) {
1566 return sqlite3_column_int(d->findAirway, 0);
1569 d->reset(d->insertAirway);
1570 sqlite_bind_stdstring(d->insertAirway, 1, aName);
1571 sqlite3_bind_int(d->insertAirway, 2, network);
1572 return d->execInsert(d->insertAirway);
1575 void NavDataCache::insertEdge(int network, int airwayID, PositionedID from, PositionedID to)
1577 // assume all edges are bidirectional for the moment
1578 for (int i=0; i<2; ++i) {
1579 d->reset(d->insertAirwayEdge);
1580 sqlite3_bind_int(d->insertAirwayEdge, 1, network);
1581 sqlite3_bind_int(d->insertAirwayEdge, 2, airwayID);
1582 sqlite3_bind_int64(d->insertAirwayEdge, 3, from);
1583 sqlite3_bind_int64(d->insertAirwayEdge, 4, to);
1584 d->execInsert(d->insertAirwayEdge);
1586 std::swap(from, to);
1590 bool NavDataCache::isInAirwayNetwork(int network, PositionedID pos)
1592 d->reset(d->isPosInAirway);
1593 sqlite3_bind_int(d->isPosInAirway, 1, network);
1594 sqlite3_bind_int64(d->isPosInAirway, 2, pos);
1595 bool ok = d->execSelect(d->isPosInAirway);
1599 AirwayEdgeVec NavDataCache::airwayEdgesFrom(int network, PositionedID pos)
1601 d->reset(d->airwayEdgesFrom);
1602 sqlite3_bind_int(d->airwayEdgesFrom, 1, network);
1603 sqlite3_bind_int64(d->airwayEdgesFrom, 2, pos);
1605 AirwayEdgeVec result;
1606 while (d->stepSelect(d->airwayEdgesFrom)) {
1607 result.push_back(AirwayEdge(
1608 sqlite3_column_int(d->airwayEdgesFrom, 0),
1609 sqlite3_column_int64(d->airwayEdgesFrom, 1)
1615 } // of namespace flightgear