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

java.lang.Object
  org.apache.pig.newplan.Operator
      org.apache.pig.newplan.logical.expression.LogicalExpression
          org.apache.pig.newplan.logical.expression.BinaryExpression

Direct Known Subclasses:

AddExpression, AndExpression, DivideExpression, EqualExpression, GreaterThanEqualExpression, GreaterThanExpression, LessThanEqualExpression, LessThanExpression, ModExpression, MultiplyExpression, NotEqualExpression, OrExpression, RegexExpression, SubtractExpression

public abstract class BinaryExpression
extends LogicalExpression

Superclass for all binary expressions

Field Summary

Fields inherited from class org.apache.pig.newplan.logical.expression.LogicalExpression

fieldSchema, uidOnlyFieldSchema

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

annotations, hashPrime, location, name, plan

Constructor Summary

BinaryExpression(String name, OperatorPlan plan, LogicalExpression lhs, LogicalExpression rhs)
Will add this operator to the plan and connect it to the left and right hand side operators.

Method Summary

LogicalExpression	getLhs() Get the left hand side of this binary expression.
LogicalExpression	getRhs() Get the right hand side of this binary expression.

Methods inherited from class org.apache.pig.newplan.logical.expression.LogicalExpression

deepCopy, getFieldSchema, getNextUid, getType, neverUseForRealSetFieldSchema, resetFieldSchema, resetNextUid, resetUid, toString

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

BinaryExpression

public BinaryExpression(String name,
                        OperatorPlan plan,
                        LogicalExpression lhs,
                        LogicalExpression rhs)

Will add this operator to the plan and connect it to the left and right hand side operators.

Parameters:

name - of the operator

plan - plan this operator is part of

lhs - expression on its left hand side

rhs - expression on its right hand side

Method Detail

getLhs

public LogicalExpression getLhs()
                         throws FrontendException

Get the left hand side of this binary expression.

Returns:

expression on the left hand side

Throws:

FrontendException

getRhs

public LogicalExpression getRhs()
                         throws FrontendException

Get the right hand side of this binary expression.

Returns:

expression on the right hand side

Throws:

FrontendException