org.apache.hadoop.hive.ql.exec
Class ExprNodeNullEvaluator

java.lang.Object
  org.apache.hadoop.hive.ql.exec.ExprNodeEvaluator<ExprNodeNullDesc>
      org.apache.hadoop.hive.ql.exec.ExprNodeNullEvaluator

public class ExprNodeNullEvaluator
extends ExprNodeEvaluator<ExprNodeNullDesc>

ExprNodeNullEvaluator.

Constructor Summary

ExprNodeNullEvaluator(ExprNodeNullDesc expr)

Method Summary

ObjectInspector

initialize(ObjectInspector rowInspector) Initialize should be called once and only once.

Methods inherited from class org.apache.hadoop.hive.ql.exec.ExprNodeEvaluator

evaluate, getChildren, getExpr, getOutputOI, isDeterministic, isStateful

Methods inherited from class java.lang.Object

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

Constructor Detail

ExprNodeNullEvaluator

public ExprNodeNullEvaluator(ExprNodeNullDesc expr)

Method Detail

initialize

public ObjectInspector initialize(ObjectInspector rowInspector)
                           throws HiveException

Description copied from class: ExprNodeEvaluator

Initialize should be called once and only once. Return the ObjectInspector for the return value, given the rowInspector.

Specified by:

initialize in class ExprNodeEvaluator<ExprNodeNullDesc>

Throws:

HiveException