protected boolean loadTile(Tile tile, java.net.URL url) {
if (WWIO.isFileOutOfDate(url, this.placeNameServiceSet.getExpiryTime())) {
// The file has expired. Delete it then request download of newer.
this.getDataFileStore().removeFile(url);
String message = Logging.getMessage("generic.DataFileExpired", url);
Logging.logger().fine(message);
return false;
}
PlaceNameChunk tileData;
synchronized (this.fileLock) {
tileData = readTileData(tile, url);
}
if (tileData == null) {
// Assume that something's wrong with the file and delete it.
this.getDataFileStore().removeFile(url);
tile.getPlaceNameService()
.markResourceAbsent(tile.getPlaceNameService().getTileNumber(tile.row, tile.column));
String message = Logging.getMessage("generic.DeletedCorruptDataFile", url);
Logging.logger().fine(message);
return false;
}
tile.setDataChunk(tileData);
WorldWind.getMemoryCache(Tile.class.getName()).add(tile.getFileCachePath(), tile);
return true;
}
public List<Tile> getTiles() {
if (tileKeys.isEmpty()) {
Tile[] tiles = buildTiles(this.placeNameService, this);
// load tileKeys
for (Tile t : tiles) {
tileKeys.add(t.getFileCachePath());
WorldWind.getMemoryCache(Tile.class.getName()).add(t.getFileCachePath(), t);
}
return Arrays.asList(tiles);
} else {
List<Tile> dataTiles = new ArrayList<Tile>();
for (String s : tileKeys) {
Tile t = (Tile) WorldWind.getMemoryCache(Tile.class.getName()).getObject(s);
if (t != null) {
dataTiles.add(t);
}
}
return dataTiles;
}
}
protected boolean isTileInMemoryWithData() {
Tile t =
(Tile) WorldWind.getMemoryCache(Tile.class.getName()).getObject(this.getFileCachePath());
return !(t == null || t.getDataChunk() == null);
}