private static function handle_geocache_replace($c)
{
# Check if any relevant geocache attributes have changed.
# We will pick up "our" copy of the cache from zero-zoom level.
try {
$cache = OkapiServiceRunner::call("services/caches/geocache", new OkapiInternalRequest(new OkapiInternalConsumer(), null, array('cache_code' => $c['object_key']['code'], 'fields' => 'internal_id|code|name|location|type|status|rating|recommendations|founds|trackables_count')));
} catch (InvalidParam $e) {
# Unprobable, but possible. Ignore changelog entry.
return;
}
# Fetch our copy of the cache.
$ours = mysql_fetch_row(Db::query("\n select cache_id, z21x, z21y, status, type, rating, flags, name_crc\n from okapi_tile_caches\n where\n z=0\n and cache_id = '" . mysql_real_escape_string($cache['internal_id']) . "'\n "));
# Caches near the poles caused our computations to break here. We will
# ignore such caches!
list($lat, $lon) = explode("|", $cache['location']);
if (floatval($lat) >= 89.98999999999999 || floatval($lat) <= -89.98999999999999) {
if ($ours) {
self::remove_geocache_from_cached_tiles($ours[0]);
}
return;
}
# Compute the new row for okapi_tile_caches. Compare with the old one.
$theirs = TileTree::generate_short_row($cache);
if (!$ours) {
# Aaah, a new geocache! How nice... ;)
self::add_geocache_to_cached_tiles($theirs);
} elseif ($ours[1] != $theirs[1] || $ours[2] != $theirs[2]) {
# Location changed.
self::remove_geocache_from_cached_tiles($ours[0]);
self::add_geocache_to_cached_tiles($theirs);
} elseif ($ours != $theirs) {
self::update_geocache_attributes_in_cached_tiles($theirs);
} else {
# No need to update anything. This is very common (i.e. when the
# cache was simply found, not actually changed). Replicate module generates
# many updates which do not influence our cache.
}
}
