/*
 * CDE - Common Desktop Environment
 *
 * Copyright (c) 1993-2012, The Open Group. All rights reserved.
 *
 * These libraries and programs are free software; you can
 * redistribute them and/or modify them under the terms of the GNU
 * Lesser General Public License as published by the Free Software
 * Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 * These libraries and programs are distributed in the hope that
 * they will be useful, but WITHOUT ANY WARRANTY; without even the
 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE. See the GNU Lesser General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with these libraries and programs; if not, write
 * to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
 * Floor, Boston, MA 02110-1301 USA
 */
/*
 * $XConsortium: bucket_array.cc /main/3 1996/06/11 17:15:51 cde-hal $
 *
 * Copyright (c) 1993 HAL Computer Systems International, Ltd.
 * All rights reserved.  Unpublished -- rights reserved under
 * the Copyright Laws of the United States.  USE OF A COPYRIGHT
 * NOTICE IS PRECAUTIONARY ONLY AND DOES NOT IMPLY PUBLICATION
 * OR DISCLOSURE.
 * 
 * THIS SOFTWARE CONTAINS CONFIDENTIAL INFORMATION AND TRADE
 * SECRETS OF HAL COMPUTER SYSTEMS INTERNATIONAL, LTD.  USE,
 * DISCLOSURE, OR REPRODUCTION IS PROHIBITED WITHOUT THE
 * PRIOR EXPRESS WRITTEN PERMISSION OF HAL COMPUTER SYSTEMS
 * INTERNATIONAL, LTD.
 * 
 *                         RESTRICTED RIGHTS LEGEND
 * Use, duplication, or disclosure by the Government is subject
 * to the restrictions as set forth in subparagraph (c)(l)(ii)
 * of the Rights in Technical Data and Computer Software clause
 * at DFARS 252.227-7013.
 *
 *          HAL COMPUTER SYSTEMS INTERNATIONAL, LTD.
 *                  1315 Dell Avenue
 *                  Campbell, CA  95008
 * 
 */



#include "diskhash/bucket_array.h"

bucket_array::bucket_array(int bs, page_storage* k_store): 
v_key_store(k_store), v_cached_bucket_ptr(0)
{
//////////////////////////////////////
// physically add buckets to the store
//////////////////////////////////////
   if ( v_key_store -> pages() == 1 ) {
      v_buckets = 0;
      expandWith(bs);
   } else
      v_buckets = bs;
}

bucket_array::~bucket_array()
{
  delete v_cached_bucket_ptr;
}

Boolean bucket_array::expandWith(int extra_buckets)
{
   v_key_store -> add_page_frames(extra_buckets);

   for ( int i=v_buckets; i<v_buckets+extra_buckets; i++ ) {
      disk_bucket* x = new disk_bucket(i, v_key_store);
      delete x;
   }

   v_buckets += extra_buckets;

   return true;
}

disk_bucket& bucket_array::get_bucket(int i)
{
//MESSAGE(cerr, form("to get bucket %d", i));
  if ( v_cached_bucket_ptr == 0 || v_cached_bucket_ptr -> bnum() != i ) {

//if ( v_cached_bucket_ptr )
//MESSAGE(cerr, form("free bucket %d %d", 
//      v_cached_bucket_ptr -> bnum(), int(v_cached_bucket_ptr)));

     delete v_cached_bucket_ptr;
     v_cached_bucket_ptr = new disk_bucket(i, v_key_store);

//MESSAGE(cerr, form("new bucket %d %d", 
//int(v_cached_bucket_ptr), v_cached_bucket_ptr -> bnum()));

  }
  return *v_cached_bucket_ptr;
}
            
ostream& bucket_array::asciiOut(ostream& out, print_func_ptr_t)
{
   return out;
}

   
ostream& operator<<(ostream& out, bucket_array&)
{
   return out;
}
