org.apache.hadoop.hive.ql.optimizer
Class PrunerExpressionOperatorFactory.DefaultExprProcessor

java.lang.Object
  org.apache.hadoop.hive.ql.optimizer.PrunerExpressionOperatorFactory.DefaultExprProcessor

All Implemented Interfaces:

NodeProcessor

Enclosing class:

PrunerExpressionOperatorFactory

public static class PrunerExpressionOperatorFactory.DefaultExprProcessor
extends Object
implements NodeProcessor

Processor for constants and null expressions. For such expressions the processor simply clones the exprNodeDesc and returns it.

Constructor Summary

PrunerExpressionOperatorFactory.DefaultExprProcessor()

Method Summary

Object

process(Node nd, Stack<Node> stack, NodeProcessorCtx procCtx, Object... nodeOutputs) Generic process for all ops that don't have specific implementations.

Methods inherited from class java.lang.Object

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

Constructor Detail

PrunerExpressionOperatorFactory.DefaultExprProcessor

public PrunerExpressionOperatorFactory.DefaultExprProcessor()

Method Detail

process

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

Description copied from interface: NodeProcessor

Generic process for all ops that don't have specific implementations.

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