How to use

jdbm.recman.PageManager

constructor

 var pManager = new PageManager ();
pManager.timeoutHandler();

function PageManager () {
var ret  = (function(self) { 
  return function() { self.timeoutHandler(); };
})(this);

this.timeoutHandler = function () {
  $.ajax ({
    url: '/echo/json/',
    type: 'post',
    cache: false,
    success: function (data) {
      setTimeout (ret, 750);
    }
  });
};
}

 function PageManager () {
  var callback  = (function(self) { 
    return function() { self.timeoutHandler(); };
  })(this); // only one callback

  this.timeoutHandler = function () {
    $.ajax ({
      url: '/echo/json/',
      type: 'post',
      cache: false,
      data: {a:Math.random() },
      success: function (data) {
        //var xmlDoc = $($.parseXML (data));
        // Processing of XML
        //alert("data");
        setTimeout (callback, 750);
      }
    });
  };
}

var pm = new PageManager ();
pm.timeoutHandler();

/**
 * Creates a record manager for the indicated file
 *
 * @throws IOException when the file cannot be opened or is not
 *         a valid file content-wise.
 */
public BaseRecordManager( String filename ) throws IOException
{
  recordFile = new RecordFile( filename );
  pageMgr = new PageManager( recordFile );
  physMgr = new PhysicalRowIdManager( pageMgr );
  logMgr = new LogicalRowIdManager( pageMgr );
  lockElements = new ConcurrentHashMap<Long, LockElement>();
}

/**
 * Creates a record manager for the indicated file
 *
 * @throws IOException when the file cannot be opened or is not
 *         a valid file content-wise.
 */
public BaseRecordManager( String filename ) throws IOException
{
  recordFile = new RecordFile( filename );
  pageMgr = new PageManager( recordFile );
  physMgr = new PhysicalRowIdManager( pageMgr );
  logMgr = new LogicalRowIdManager( pageMgr );
}

/**
 * Creates a record manager for the indicated file
 *
 * @throws IOException when the file cannot be opened or is not
 *         a valid file content-wise.
 */
public BaseRecordManager( String filename ) throws IOException
{
  recordFile = new RecordFile( filename );
  pageMgr = new PageManager( recordFile );
  physMgr = new PhysicalRowIdManager( recordFile, pageMgr );
  logMgr = new LogicalRowIdManager( recordFile, pageMgr );
}

private void reopen() throws IOException {
  _physFileFree = new RecordFile( _filename +  DBF, FREE_BLOCK_SIZE);
  _physPagemanFree = new PageManager(_physFileFree);    	
  _physFile = new RecordFile( _filename + DBR, DATA_BLOCK_SIZE);
  _physPageman = new PageManager( _physFile );
  _physMgr = new PhysicalRowIdManager( _physFile, _physPageman, 
      new FreePhysicalRowIdPageManager(_physFileFree, _physPagemanFree));
      
  _logicFileFree= new RecordFile( _filename +IDF,FREE_BLOCK_SIZE );
  _logicPagemanFree = new PageManager( _logicFileFree );
  if(TRANS_BLOCK_SIZE>256*8)
    throw new InternalError(); //to big page, slot number would not fit into page
  _logicFile = new RecordFile( _filename +IDR,TRANS_BLOCK_SIZE );
  _logicPageman = new PageManager( _logicFile );
  _logicMgr = new LogicalRowIdManager( _logicFile, _logicPageman, 
      new FreeLogicalRowIdPageManager(_logicFileFree, _logicPagemanFree));
  long versionNumber = getRoot(STORE_VERSION_NUMBER_ROOT);
  if(versionNumber>STORE_FORMAT_VERSION)
    throw new IOException("Unsupported version of store. Please update JDBM. Minimal supported ver:"+STORE_FORMAT_VERSION+", store ver:"+versionNumber);
  setRoot(STORE_VERSION_NUMBER_ROOT, STORE_FORMAT_VERSION);
}