@Override public <T> InputStream getTileStream (String basePath, TileSerializer<T> serializer, TileIndex tile) throws IOException { File tileFile = getTileFile(basePath, tile); if (tileFile.exists() && tileFile.isFile()) { return new FileInputStream(tileFile); } else { return null; } }
@Override public <T> void writeTiles (String basePath, TileSerializer<T> serializer, Iterable<TileData<T>> data) throws IOException { for (TileData<T> tile: data) { File tileFile = getTileFile(basePath, tile.getDefinition()); File parent = tileFile.getParentFile(); if (!parent.exists()) parent.mkdirs(); FileOutputStream fileStream = new FileOutputStream(tileFile); serializer.serialize(tile, fileStream); fileStream.close(); } }
@Override public <T> List<TileData<T>> readTiles (String basePath, TileSerializer<T> serializer, Iterable<TileIndex> tiles) throws IOException { List<TileData<T>> results = new LinkedList<TileData<T>>(); for (TileIndex tile: tiles) { File tileFile = getTileFile(basePath, tile); if (tileFile.exists() && tileFile.isFile()) { FileInputStream stream = new FileInputStream(tileFile); TileData<T> data = serializer.deserialize(tile, stream); results.add(data); stream.close(); } } return results; }
@Override public void removeTiles (String basePath, Iterable<TileIndex> tiles ) throws IOException { for (TileIndex tile: tiles) { // delete tile File tileFile = getTileFile(basePath, tile); tileFile.delete(); // if x directory is empty, delete it as well File xDir = getXDir(basePath, tile); if ( xDir.isDirectory() && xDir.list().length == 0 ) { xDir.delete(); } // if level directory is empty, delete it as well File levelDir = getLevelDir(basePath, tile); if ( levelDir.isDirectory() && levelDir.list().length == 0 ) { levelDir.delete(); } } }