org.apache.pig.newplan.logical.expression
Class LogicalExpressionVisitor

java.lang.Object
  org.apache.pig.newplan.PlanVisitor
      org.apache.pig.newplan.logical.expression.LogicalExpressionVisitor

Direct Known Subclasses:

AllSameExpressionVisitor, ExpToPhyTranslationVisitor, ResetProjectionAttachedRelationalOpVisitor, ScalarVariableValidator.ProjectFinder, TypeCheckingExpVisitor

public abstract class LogicalExpressionVisitor
extends PlanVisitor

A visitor for expression plans.

Field Summary

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

currentWalker, DEFAULT_SCOPE, plan

Constructor Summary

protected

LogicalExpressionVisitor(OperatorPlan p, PlanWalker walker)

Method Summary

void	visit(AddExpression op)
void	visit(AndExpression op)
void	visit(BinCondExpression op)
void	visit(CastExpression op)
void	visit(ConstantExpression op)
void	visit(DereferenceExpression op)
void	visit(DivideExpression op)
void	visit(EqualExpression op)
void	visit(GreaterThanEqualExpression op)
void	visit(GreaterThanExpression op)
void	visit(IsNullExpression op)
void	visit(LessThanEqualExpression op)
void	visit(LessThanExpression op)
void	visit(MapLookupExpression op)
void	visit(ModExpression op)
void	visit(MultiplyExpression op)
void	visit(NegativeExpression op)
void	visit(NotEqualExpression op)
void	visit(NotExpression op)
void	visit(OrExpression op)
void	visit(ProjectExpression op)
void	visit(RegexExpression op)
void	visit(ScalarExpression op)
void	visit(SubtractExpression op)
void	visit(UserFuncExpression op)

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

LogicalExpressionVisitor

protected LogicalExpressionVisitor(OperatorPlan p,
                                   PlanWalker walker)
                            throws FrontendException

Throws:

FrontendException

Method Detail

visit

public void visit(AndExpression op)
           throws FrontendException

Throws:

FrontendException

visit

public void visit(OrExpression op)
           throws FrontendException

Throws:

FrontendException

visit

public void visit(EqualExpression op)
           throws FrontendException

Throws:

FrontendException

visit

public void visit(ProjectExpression op)
           throws FrontendException

Throws:

FrontendException

visit

public void visit(ConstantExpression op)
           throws FrontendException

Throws:

FrontendException

visit

public void visit(CastExpression op)
           throws FrontendException

Throws:

FrontendException

visit

public void visit(GreaterThanExpression op)
           throws FrontendException

Throws:

FrontendException

visit

public void visit(GreaterThanEqualExpression op)
           throws FrontendException

Throws:

FrontendException

visit

public void visit(LessThanExpression op)
           throws FrontendException

Throws:

FrontendException

visit

public void visit(LessThanEqualExpression op)
           throws FrontendException

Throws:

FrontendException

visit

public void visit(NotEqualExpression op)
           throws FrontendException

Throws:

FrontendException

visit

public void visit(NotExpression op)
           throws FrontendException

Throws:

FrontendException

visit

public void visit(IsNullExpression op)
           throws FrontendException

Throws:

FrontendException

visit

public void visit(NegativeExpression op)
           throws FrontendException

Throws:

FrontendException

visit

public void visit(AddExpression op)
           throws FrontendException

Throws:

FrontendException

visit

public void visit(SubtractExpression op)
           throws FrontendException

Throws:

FrontendException

visit

public void visit(MultiplyExpression op)
           throws FrontendException

Throws:

FrontendException

visit

public void visit(ModExpression op)
           throws FrontendException

Throws:

FrontendException

visit

public void visit(DivideExpression op)
           throws FrontendException

Throws:

FrontendException

visit

public void visit(MapLookupExpression op)
           throws FrontendException

Throws:

FrontendException

visit

public void visit(BinCondExpression op)
           throws FrontendException

Throws:

FrontendException

visit

public void visit(UserFuncExpression op)
           throws FrontendException

Throws:

FrontendException

visit

public void visit(DereferenceExpression op)
           throws FrontendException

Throws:

FrontendException

visit

public void visit(RegexExpression op)
           throws FrontendException

Throws:

FrontendException

visit

public void visit(ScalarExpression op)
           throws FrontendException

Throws:

FrontendException