Java PagesIndex.sort示例

示例#1

文件： WindowOperator.java 项目： jessica0530/presto

 private void sortPagesIndexIfNecessary() {
   if (pagesIndex.getPositionCount() > 1 && !orderChannels.isEmpty()) {
     int startPosition = 0;
     while (startPosition < pagesIndex.getPositionCount()) {
       int endPosition = findGroupEnd(pagesIndex, preSortedPartitionHashStrategy, startPosition);
       pagesIndex.sort(orderChannels, ordering, startPosition, endPosition);
       startPosition = endPosition;
     }
   }
 }