예제 #1
0
  private Integer seekToSubColumn(
      CFMetaData metadata,
      FileDataInput file,
      ByteBuffer sblockId,
      List<IndexHelper.IndexInfo> indexList)
      throws IOException {
    file.readInt(); // column count

    /* get the various column ranges we have to read */
    AbstractType comparator = metadata.comparator;

    int index = IndexHelper.indexFor(sblockId, indexList, comparator, false);
    if (index == indexList.size()) return null;

    IndexHelper.IndexInfo indexInfo = indexList.get(index);
    if (comparator.compare(sblockId, indexInfo.firstName) < 0) return null;

    FileMark mark = file.mark();

    FileUtils.skipBytesFully(file, indexInfo.offset);

    while (file.bytesPastMark(mark) < indexInfo.offset + indexInfo.width) {
      Integer dataLength = isSubBlockFound(metadata, file, sblockId);

      if (dataLength == null) return null;

      if (dataLength < 0) continue;

      return dataLength;
    }

    return null;
  }
예제 #2
0
 IndexedBlockFetcher(RowIndexEntry indexEntry) {
   basePosition = indexEntry.position;
   curRangeIndex = IndexHelper.indexFor(startColumn, indexes, comparator, reversed);
 }
예제 #3
0
 IndexedBlockFetcher() throws IOException {
   file.readInt(); // column count
   basePosition = file.getFilePointer();
   curRangeIndex = IndexHelper.indexFor(startColumn, indexes, comparator, reversed);
 }