org.apache.pig.newplan.logical.relational

Class LOSort

java.lang.Object

org.apache.pig.newplan.Operator

org.apache.pig.newplan.logical.relational.LogicalRelationalOperator

org.apache.pig.newplan.logical.relational.LOSort

public class LOSort
extends LogicalRelationalOperator

Field Summary

Fields inherited from class org.apache.pig.newplan.logical.relational.LogicalRelationalOperator

alias, lineNum, mCustomPartitioner, mPinnedOptions, requestedParallelism, schema

Fields inherited from class org.apache.pig.newplan.Operator

annotations, hashPrime, location, name, plan

Constructor Summary

Constructors

Constructor and Description
LOSort(OperatorPlan plan)
LOSort(OperatorPlan plan, List<LogicalExpressionPlan> sortColPlans, List<Boolean> ascCols, FuncSpec sortFunc)

Method Summary

Methods

Modifier and Type	Method and Description
void	accept(PlanVisitor v) Accept a visitor at this node in the graph.
static LOSort	createCopy(LOSort sort)
List<Boolean>	getAscendingCols()
Operator	getInput(LogicalPlan plan)
long	getLimit()
LogicalSchema	getSchema() Get the schema for the output of this relational operator.
List<LogicalExpressionPlan>	getSortColPlans()
SortInfo	getSortInfo()
FuncSpec	getUserFunc()
boolean	isEqual(Operator other) This is like a shallow equals comparison.
boolean	isLimited()
boolean	isStar()
void	setAscendingCols(List<Boolean> ascCols)
void	setLimit(long l)
void	setSortColPlans(List<LogicalExpressionPlan> sortPlans)
void	setStar(boolean b)
void	setUserFunc(FuncSpec func)

Methods inherited from class org.apache.pig.newplan.logical.relational.LogicalRelationalOperator

checkEquality, fixDuplicateUids, getAlias, getCustomPartitioner, getLineNumber, getRequestedParallelism, isPinnedOption, neverUseForRealSetSchema, pinOption, resetSchema, resetUid, setAlias, setCustomPartitioner, setRequestedParallelism, setSchema, toString

Methods inherited from class org.apache.pig.newplan.Operator

annotate, getAnnotation, getLocation, getName, getPlan, removeAnnotation, setLocation, setPlan

Methods inherited from class java.lang.Object

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

Constructor Detail

LOSort

public LOSort(OperatorPlan plan)

LOSort

public LOSort(OperatorPlan plan,
      List<LogicalExpressionPlan> sortColPlans,
      List<Boolean> ascCols,
      FuncSpec sortFunc)

Method Detail

getSortColPlans

public List<LogicalExpressionPlan> getSortColPlans()

setSortColPlans

public void setSortColPlans(List<LogicalExpressionPlan> sortPlans)

getAscendingCols

public List<Boolean> getAscendingCols()

setAscendingCols

public void setAscendingCols(List<Boolean> ascCols)

getUserFunc

public FuncSpec getUserFunc()

setUserFunc

public void setUserFunc(FuncSpec func)

isStar

public boolean isStar()

setStar

public void setStar(boolean b)

setLimit

public void setLimit(long l)

getLimit

public long getLimit()

isLimited

public boolean isLimited()

getSchema

public LogicalSchema getSchema()
                        throws FrontendException

Description copied from class: LogicalRelationalOperator

Get the schema for the output of this relational operator. This does not merely return the schema variable. If schema is not yet set, this will attempt to construct it. Therefore it is abstract since each operator will need to construct its schema differently.

Specified by:

getSchema in class LogicalRelationalOperator

Returns:

the schema

Throws:

FrontendException

accept

public void accept(PlanVisitor v)
            throws FrontendException

Description copied from class: Operator

Accept a visitor at this node in the graph.

Specified by:

accept in class Operator

Parameters:

v - Visitor to accept.

Throws:

FrontendException

getSortInfo

public SortInfo getSortInfo()
                     throws FrontendException

Throws:

FrontendException

isEqual

public boolean isEqual(Operator other)
                throws FrontendException

Description copied from class: Operator

This is like a shallow equals comparison. It returns true if two operators have equivalent properties even if they are different objects. Here properties mean equivalent plan and equivalent name.

Specified by:

isEqual in class Operator

Returns:

true if two object have equivalent properties, else false

Throws:

FrontendException

getInput

public Operator getInput(LogicalPlan plan)

createCopy

public static LOSort createCopy(LOSort sort)
                         throws FrontendException

Throws:

FrontendException