private P byteArrayToPage(byte[] array){
  try {
    ByteArrayInputStream bais=new ByteArrayInputStream(array);
    ObjectInputStream ois=new ObjectInputStream(bais);
    int type=ois.readInt();
    if (type == EMPTY_PAGE) {
      return null;
    }
 else     if (type == FILLED_PAGE) {
      P page;
      try {
        page=pageclass.newInstance();
        page.readExternal(ois);
      }
 catch (      InstantiationException|IllegalAccessException|ClassNotFoundException e) {
        throw new AbortException("Error instanciating an index page",e);
      }
      return page;
    }
 else {
      throw new IllegalArgumentException("Unknown type: " + type);
    }
  }
 catch (  IOException e) {
    throw new AbortException("IO Error in page file",e);
  }
}

private P byteArrayToPage ( byte [ ] array ) { try { ByteArrayInputStream bais = new ByteArrayInputStream ( array ) ; ObjectInputStream ois = new ObjectInputStream ( bais ) ; int type = ois . readInt ( ) ; if ( type == EMPTY_PAGE ) { return null ; } else if ( type == FILLED_PAGE ) { P page ; try { page = pageclass . newInstance ( ) ; page . readExternal ( ois ) ; } catch ( InstantiationException | IllegalAccessException | ClassNotFoundException e ) { throw new AbortException ( "Error instanciating an index page" , e ) ; } return page ; } else { throw new IllegalArgumentException ( "Unknown type: " + type ) ; } } catch ( IOException e ) { throw new AbortException ( "IO Error in page file" , e ) ; } }
reconstruct a serialized object from the specified byte array .
