org.apache.hadoop.hive.ql.exec

Class FilterOperator

java.lang.Object

org.apache.hadoop.hive.ql.exec.Operator<FilterDesc>

org.apache.hadoop.hive.ql.exec.FilterOperator

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, Node

public class FilterOperator
extends Operator<FilterDesc>
implements java.io.Serializable

Filter operator implementation.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	FilterOperator.Counter Counter.

Nested classes/interfaces inherited from class org.apache.hadoop.hive.ql.exec.Operator

Operator.OperatorFunc, Operator.ProgressCounter, Operator.State

Field Summary

Fields inherited from class org.apache.hadoop.hive.ql.exec.Operator

alias, beginTime, childOperators, childOperatorsArray, childOperatorsTag, colExprMap, conf, counterNames, counterNameToEnum, counters, done, fatalErrorCntr, groupKeyObject, id, inputObjInspectors, inputRows, isLogInfoEnabled, LOG, numInputRowsCntr, numOutputRowsCntr, operatorId, out, outputObjInspector, outputRows, parentOperators, reporter, state, statsMap, timeTakenCntr, totalTime

Constructor Summary

Constructors

Constructor and Description
FilterOperator()

Method Summary

Modifier and Type	Method and Description
boolean	columnNamesRowResolvedCanBeObtained()
java.lang.String	getName() Implements the getName function for the Node Interface.
static java.lang.String	getOperatorName()
OperatorType	getType() Return the type of the specific operator among the types in OperatorType.
protected void	initializeOp(Configuration hconf) Operator specific initialization.
void	processOp(java.lang.Object row, int tag) Process the row.
boolean	supportAutomaticSortMergeJoin() Whether this operator supports automatic sort merge join.
boolean	supportSkewJoinOptimization()
boolean	supportUnionRemoveOptimization()

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

acceptLimitPushdown, allInitializedParentsAreClosed, areAllParentsInitialized, assignCounterNameToEnum, augmentPlan, checkFatalErrors, cleanUpInputFileChanged, cleanUpInputFileChangedOp, clone, close, closeOp, dump, dump, endGroup, fatalErrorMessage, flush, forward, getAdditionalCounters, getChildOperators, getChildren, getColumnExprMap, getConf, getConfiguration, getCounterNames, getCounterNameToEnum, getCounters, getDone, getExecContext, getGroupKeyObject, getIdentifier, getInputObjInspectors, getNextCntr, getNumChild, getNumParent, getOperatorId, getParentOperators, getSchema, getStats, getWrappedCounterName, incrCounter, initEvaluators, initEvaluators, initEvaluatorsAndReturnStruct, initialize, initialize, initializeChildren, initializeCounters, initializeLocalWork, initOperatorId, isUseBucketizedHiveInputFormat, jobClose, jobCloseOp, logStats, opAllowedAfterMapJoin, opAllowedBeforeMapJoin, opAllowedBeforeSortMergeJoin, opAllowedConvertMapJoin, passExecContext, preorderMap, process, processGroup, removeChild, removeChildAndAdoptItsChildren, removeChildren, removeParent, replaceChild, replaceParent, reset, resetId, resetLastEnumUsed, resetStats, setAlias, setChildOperators, setColumnExprMap, setConf, setCounterNames, setCounterNameToEnum, setDone, setExecContext, setGroupKeyObject, setId, setInputObjInspectors, setOperatorId, setOutputCollector, setParentOperators, setReporter, setSchema, setUseBucketizedHiveInputFormat, startGroup, toString, toString, updateCounters

Methods inherited from class java.lang.Object

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

Constructor Detail

FilterOperator

public FilterOperator()

Method Detail

initializeOp

protected void initializeOp(Configuration hconf)
                     throws HiveException

Description copied from class: Operator

Operator specific initialization.

Overrides:

initializeOp in class Operator<FilterDesc>

Throws:

HiveException

processOp

public void processOp(java.lang.Object row,
                      int tag)
               throws HiveException

Description copied from class: Operator

Process the row.

Specified by:

processOp in class Operator<FilterDesc>

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

getName

public java.lang.String getName()

Description copied from class: Operator

Implements the getName function for the Node Interface.

Specified by:

getName in interface Node

Overrides:

getName in class Operator<FilterDesc>

Returns:

the name of the operator

getOperatorName

public static java.lang.String getOperatorName()

getType

public OperatorType getType()

Description copied from class: Operator

Return the type of the specific operator among the types in OperatorType.

Specified by:

getType in class Operator<FilterDesc>

Returns:

OperatorType.*

supportSkewJoinOptimization

public boolean supportSkewJoinOptimization()

Overrides:

supportSkewJoinOptimization in class Operator<FilterDesc>

columnNamesRowResolvedCanBeObtained

public boolean columnNamesRowResolvedCanBeObtained()

Overrides:

columnNamesRowResolvedCanBeObtained in class Operator<FilterDesc>

supportAutomaticSortMergeJoin

public boolean supportAutomaticSortMergeJoin()

Description copied from class: Operator

Whether this operator supports automatic sort merge join. The stack is traversed, and this method is invoked for all the operators.

Overrides:

supportAutomaticSortMergeJoin in class Operator<FilterDesc>

Returns:

TRUE if yes, FALSE otherwise.

supportUnionRemoveOptimization

public boolean supportUnionRemoveOptimization()

Overrides:

supportUnionRemoveOptimization in class Operator<FilterDesc>