org.apache.hadoop.hive.ql.parse
Class TezWalker

java.lang.Object
  org.apache.hadoop.hive.ql.lib.DefaultGraphWalker
      org.apache.hadoop.hive.ql.parse.TezWalker

All Implemented Interfaces:

GraphWalker

public class TezWalker
extends DefaultGraphWalker

Walks the operator tree in DFS fashion.

Field Summary

Fields inherited from class org.apache.hadoop.hive.ql.lib.DefaultGraphWalker

dispatcher, opStack, retMap, toWalk

Constructor Summary

TezWalker(Dispatcher disp)
constructor of the walker - the dispatcher is passed.

Method Summary

void	walk(Node nd) Walk the given operator.

Methods inherited from class org.apache.hadoop.hive.ql.lib.DefaultGraphWalker

dispatch, dispatchAndReturn, getDispatchedList, getToWalk, startWalking

Methods inherited from class java.lang.Object

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

Constructor Detail

TezWalker

public TezWalker(Dispatcher disp)

constructor of the walker - the dispatcher is passed.

Parameters:

disp - the dispatcher to be called for each node visited

Method Detail

walk

public void walk(Node nd)
          throws SemanticException

Walk the given operator.

Overrides:

walk in class DefaultGraphWalker

Parameters:

nd - operator being walked

Throws:

SemanticException