/**

   * This method is for use with UI Table addRows buttons that require the

   * addition of multiple rows; given a RowIterator (such as a VO) and the

   * number of rows the caller needs to add, this method figures out where

   * the caller should start adding rows in order to comply with the BLAF

   * standard that newly added rows should go into the bottom of the current

   * table range (which is the same as the RowIterator range if things are

   * set up properly), pushing rows into the next range if necessary

   *

   * Returns: range-based (not absolute) index within the current range

   */

  public static int getStartIndexForMultiInsert(RowIterator rowIt, int numRowsToAdd)

  {

    int numRowsInRange = rowIt.getRowCountInRange();

    int rangeSize = rowIt.getRangeSize();

    int firstIndexAtWhichToAdd = 0;

    int numOpenSlotsInRange = (rangeSize - numRowsInRange);

    if (rowIt.getRangeSize() < rangeSize)

    {

      rowIt.setRangeSize(rangeSize);

    }

    if (numOpenSlotsInRange < numRowsToAdd)

    {

      firstIndexAtWhichToAdd = rangeSize - numRowsToAdd;

    }

    else

    {

      firstIndexAtWhichToAdd = numRowsInRange;

    }

    return firstIndexAtWhichToAdd;

  }

调用:

 int indexForRowInserts = getStartIndexForMultiInsert(vo, 1);

  vo.insertRowAtRangeIndex(indexForRowInserts,row);