コード例 #1
0
ファイル: DiskData.java プロジェクト: LukasK/basex
 @Override
 public void startUpdate(final MainOptions opts) throws IOException {
   if (!table.lock(true)) throw new BaseXException(Text.DB_PINNED_X, meta.name);
   if (opts.get(MainOptions.AUTOFLUSH)) {
     final IOFile uf = meta.updateFile();
     if (uf.exists()) throw new BaseXException(Text.DB_UPDATED_X, meta.name);
     if (!uf.touch()) throw Util.notExpected("%: could not create lock file.", meta.name);
   }
 }
コード例 #2
0
  /**
   * Checks if the table of the specified database is locked.
   *
   * @param db name of database
   * @param ctx database context
   * @return result of check
   */
  public static boolean locked(final String db, final Context ctx) {
    final IOFile table = MetaData.file(ctx.globalopts.dbpath(db), DATATBL);
    if (!table.exists()) return false;

    try (final RandomAccessFile file = new RandomAccessFile(table.file(), "rw")) {
      return file.getChannel().tryLock() == null;
    } catch (final ClosedChannelException ex) {
      return false;
    } catch (final OverlappingFileLockException | IOException ex) {
      return true;
    }
  }
コード例 #3
0
ファイル: DiskData.java プロジェクト: LukasK/basex
  @Override
  public synchronized void finishUpdate(final MainOptions opts) {
    // remove updating file
    final boolean auto = opts.get(MainOptions.AUTOFLUSH);
    if (auto) {
      final IOFile uf = meta.updateFile();
      if (!uf.exists()) throw Util.notExpected("%: lock file does not exist.", meta.name);
      if (!uf.delete()) throw Util.notExpected("%: could not delete lock file.", meta.name);
    }

    // db:optimize(..., true) will close the database before this function is called
    if (!closed) {
      flush(auto);
      if (!table.lock(false)) throw Util.notExpected("Database '%': could not unlock.", meta.name);
    }
  }