org.apache.hadoop.hive.ql.optimizer.optiq
Class HiveOptiqUtil

java.lang.Object
  org.apache.hadoop.hive.ql.optimizer.optiq.HiveOptiqUtil

public class HiveOptiqUtil
extends Object

Generic utility functions needed for Optiq based Hive CBO.

Constructor Summary

HiveOptiqUtil()

Method Summary

static List<Integer>	getVirtualCols(List<org.eigenbase.rex.RexNode> exps) Get list of virtual columns from the given list of projections.
static void	todo(String s) Deprecated.
static List<Integer>	translateBitSetToProjIndx(BitSet projBitSet)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

HiveOptiqUtil

public HiveOptiqUtil()

Method Detail

getVirtualCols

public static List<Integer> getVirtualCols(List<org.eigenbase.rex.RexNode> exps)

Get list of virtual columns from the given list of projections.

Parameters:

exps - list of rex nodes representing projections

Returns:

List of Virtual Columns, will not be null.

translateBitSetToProjIndx

public static List<Integer> translateBitSetToProjIndx(BitSet projBitSet)

todo

@Deprecated
public static void todo(String s)

Deprecated.