org.apache.hadoop.hive.ql.ppd
Class ExprWalkerProcFactory.ColumnExprProcessor

java.lang.Object
  org.apache.hadoop.hive.ql.ppd.ExprWalkerProcFactory.ColumnExprProcessor

All Implemented Interfaces:

NodeProcessor

Enclosing class:

ExprWalkerProcFactory

public static class ExprWalkerProcFactory.ColumnExprProcessor
extends Object
implements NodeProcessor

ColumnExprProcessor.

Constructor Summary

ExprWalkerProcFactory.ColumnExprProcessor()

Method Summary

Object

process(Node nd, Stack<Node> stack, NodeProcessorCtx procCtx, Object... nodeOutputs) Converts the reference from child row resolver to current row resolver.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExprWalkerProcFactory.ColumnExprProcessor

public ExprWalkerProcFactory.ColumnExprProcessor()

Method Detail

process

public Object process(Node nd,
                      Stack<Node> stack,
                      NodeProcessorCtx procCtx,
                      Object... nodeOutputs)
               throws SemanticException

Converts the reference from child row resolver to current row resolver.

Specified by:

process in interface NodeProcessor

Parameters:

nd - operator to process

procCtx - operator processor context

nodeOutputs - A variable argument list of outputs from other nodes in the walk

Returns:

Object to be returned by the process call

Throws:

SemanticException