org.apache.pig

Class Expression

java.lang.Object

org.apache.pig.Expression

Direct Known Subclasses:

Expression.BetweenExpression, Expression.BinaryExpression, Expression.Column, Expression.Const, Expression.InExpression, Expression.UnaryExpression

@InterfaceAudience.Public
 @InterfaceStability.Evolving
public abstract class Expression
extends java.lang.Object

A class to communicate Filter expressions to LoadFuncs.

Since:

Pig 0.7

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Expression.BetweenExpression
static class	Expression.BinaryExpression
static class	Expression.Column
static class	Expression.Const
static class	Expression.InExpression
static class	Expression.OpType
static class	Expression.UnaryExpression

Field Summary

Fields

Modifier and Type	Field and Description
protected byte	dataType
protected Expression.OpType	opType

Constructor Summary

Constructors

Constructor and Description
Expression()

Method Summary

Modifier and Type	Method and Description
byte	getDataType()
Expression.OpType	getOpType()

Methods inherited from class java.lang.Object

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

Field Detail

opType

protected Expression.OpType opType

dataType

protected byte dataType

Constructor Detail

Expression

public Expression()

Method Detail

getOpType

public Expression.OpType getOpType()

Returns:

the opType

getDataType

public byte getDataType()