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

java.lang.Object
  extended by org.apache.hadoop.hive.ql.exec.Operator<forwardDesc>
      extended by org.apache.hadoop.hive.ql.exec.ForwardOperator
All Implemented Interfaces:
Serializable, Node

public class ForwardOperator
extends Operator<forwardDesc>
implements Serializable

Forward Operator Just forwards. Doesn't do anything itself.

See Also:
Serialized Form

Nested Class Summary
 
Nested classes/interfaces inherited from class org.apache.hadoop.hive.ql.exec.Operator
Operator.OperatorFunc, Operator.State
 
Field Summary
 
Fields inherited from class org.apache.hadoop.hive.ql.exec.Operator
alias, childOperators, childOperatorsArray, childOperatorsTag, colExprMap, conf, done, id, inputObjInspectors, LOG, out, outputObjInspector, parentOperators, reporter, state, statsMap
 
Constructor Summary
ForwardOperator()
           
 
Method Summary
 void process(Object row, int tag)
          Process the row.
 
Methods inherited from class org.apache.hadoop.hive.ql.exec.Operator
areAllParentsInitialized, close, closeOp, dump, endGroup, forward, getChildOperators, getChildren, getColumnExprMap, getConf, getDone, getIdentifier, getName, getParentOperators, getSchema, getStats, initEvaluators, initEvaluatorsAndReturnStruct, initialize, initializeChildren, initializeOp, jobClose, logStats, preorderMap, removeChild, replaceChild, replaceParent, resetStats, setAlias, setChildOperators, setColumnExprMap, setConf, setDone, setId, setOutputCollector, setParentOperators, setReporter, setSchema, startGroup
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

ForwardOperator

public ForwardOperator()
Method Detail

process

public void process(Object row,
                    int tag)
             throws HiveException
Description copied from class: Operator
Process the row.

Specified by:
process in class Operator<forwardDesc>
Parameters:
row - The object representing the row.
tag - The tag of the row usually means which parent this row comes from. Rows with the same tag should have exactly the same rowInspector all the time.
Throws:
HiveException


Copyright © 2009 The Apache Software Foundation