How to use

isOpen

method

in

org.tmatesoft.sqljet.core.table.SqlJetDb

  /**
   * {@inheritDoc}
   * @see net.sf.hajdbc.pool.PoolProvider#isValid(java.lang.Object)
   */
  @Override
  public boolean isValid(SqlJetDb database)
  {
    return database.isOpen();
  }
}

public Object runWithLock(SqlJetDb db) throws SqlJetException {
  if (temporaryDb == null || !temporaryDb.isOpen()) {
    closeTemporaryDatabase();
    final File tmpDbFile = getTemporaryDatabaseFile(inMemory);
    if (tmpDbFile != null) {
      temporaryDb = SqlJetDb.open(tmpDbFile, true);
    }
  }
  return temporaryDb;
}