org.apache.pig.newplan.logical.visitor
Class LineageFindRelVisitor

java.lang.Object
  org.apache.pig.newplan.PlanVisitor
      org.apache.pig.newplan.logical.relational.LogicalRelationalNodesVisitor
          org.apache.pig.newplan.logical.visitor.LineageFindRelVisitor

public class LineageFindRelVisitor
extends LogicalRelationalNodesVisitor

Create mapping between uid and Load FuncSpec when the LogicalExpression associated with it is known to hold an unmodified element of data returned by the load function. This information is used to find the LoadCaster to be used to cast bytearrays into other other types.

Field Summary

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

currentWalker, DEFAULT_SCOPE, plan

Constructor Summary

LineageFindRelVisitor(OperatorPlan plan)

Method Summary

Map<Long,FuncSpec>	getUid2LoadFuncMap()
void	visit(LOCogroup group)
void	visit(LOCross relOp)
void	visit(LODistinct relOp)
void	visit(LOFilter filter)
void	visit(LOForEach fe)
void	visit(LOGenerate gen)
void	visit(LOInnerLoad innerLoad)
void	visit(LOJoin join)
void	visit(LOLimit loLimit)
void	visit(LOLoad load)
void	visit(LORank rank)
void	visit(LOSort sort)
void	visit(LOSplit relOp)
void	visit(LOSplitOutput split)
void	visit(LOStore relOp)
void	visit(LOStream stream)
void	visit(LOUnion relOp)

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

visit, visit

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

getPlan, popWalker, pushWalker, visit

Methods inherited from class java.lang.Object

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

Constructor Detail

LineageFindRelVisitor

public LineageFindRelVisitor(OperatorPlan plan)
                      throws FrontendException

Throws:

FrontendException

Method Detail

getUid2LoadFuncMap

public Map<Long,FuncSpec> getUid2LoadFuncMap()

visit

public void visit(LOLoad load)
           throws FrontendException

Overrides:

visit in class LogicalRelationalNodesVisitor

Throws:

FrontendException

visit

public void visit(LOStream stream)
           throws FrontendException

Overrides:

visit in class LogicalRelationalNodesVisitor

Throws:

FrontendException

visit

public void visit(LOInnerLoad innerLoad)
           throws FrontendException

Overrides:

visit in class LogicalRelationalNodesVisitor

Throws:

FrontendException

visit

public void visit(LOFilter filter)
           throws FrontendException

Overrides:

visit in class LogicalRelationalNodesVisitor

Throws:

FrontendException

visit

public void visit(LOCogroup group)
           throws FrontendException

Overrides:

visit in class LogicalRelationalNodesVisitor

Throws:

FrontendException

visit

public void visit(LOJoin join)
           throws FrontendException

Overrides:

visit in class LogicalRelationalNodesVisitor

Throws:

FrontendException

visit

public void visit(LOForEach fe)
           throws FrontendException

Overrides:

visit in class LogicalRelationalNodesVisitor

Throws:

FrontendException

visit

public void visit(LOGenerate gen)
           throws FrontendException

Overrides:

visit in class LogicalRelationalNodesVisitor

Throws:

FrontendException

visit

public void visit(LOSort sort)
           throws FrontendException

Overrides:

visit in class LogicalRelationalNodesVisitor

Throws:

FrontendException

visit

public void visit(LORank rank)
           throws FrontendException

Overrides:

visit in class LogicalRelationalNodesVisitor

Throws:

FrontendException

visit

public void visit(LODistinct relOp)
           throws FrontendException

Overrides:

visit in class LogicalRelationalNodesVisitor

Throws:

FrontendException

visit

public void visit(LOLimit loLimit)
           throws FrontendException

Overrides:

visit in class LogicalRelationalNodesVisitor

Throws:

FrontendException

visit

public void visit(LOSplit relOp)
           throws FrontendException

Overrides:

visit in class LogicalRelationalNodesVisitor

Throws:

FrontendException

visit

public void visit(LOStore relOp)
           throws FrontendException

Overrides:

visit in class LogicalRelationalNodesVisitor

Throws:

FrontendException

visit

public void visit(LOCross relOp)
           throws FrontendException

Overrides:

visit in class LogicalRelationalNodesVisitor

Throws:

FrontendException

visit

public void visit(LOUnion relOp)
           throws FrontendException

Overrides:

visit in class LogicalRelationalNodesVisitor

Throws:

FrontendException

visit

public void visit(LOSplitOutput split)
           throws FrontendException

Overrides:

visit in class LogicalRelationalNodesVisitor

Throws:

FrontendException