public PrunedPartitionList getPrunedPartitions(String alias, TableScanOperator ts)
      throws SemanticException {
    PrunedPartitionList partsList = opToPartList.get(ts);
    if (partsList == null) {
      partsList = PartitionPruner.prune(ts, this, alias);
      opToPartList.put(ts, partsList);
    }
    return partsList;
  }
Gets the associated lineage information.

@return LineageInfo
ql/src/java/org/apache/hadoop/hive/ql/parse/ParseContext.java