控制data pool中的游标

IDatapool dp = (IDatapool) this.getDatapool();
  IDatapoolIterator dpIter = this.dpFactory().open(dp, null);
  dpIter.dpInitialize(dp);
  String str = new String("");
  
  for(int i=0;i<=149;i++)//while ( !dpIter.dpDone() )
  { 
   dpIter.dpCurrent();
   if(i>=140)
   {
    str = dpIter.dpString(0); 
    System.out.println(str);        
   }
   dpIter.dpNext();   
  }