org.teiid.language
Class Comparison

java.lang.Object
  org.teiid.language.BaseLanguageObject
      org.teiid.language.Condition
          org.teiid.language.Comparison

All Implemented Interfaces:

Expression, LanguageObject, Predicate

public class Comparison
extends Condition
implements Predicate

Represents a comparison between two expressions connected with one of the following operators: =, <>, <, <=, >, >=.

Nested Class Summary

static class

Comparison.Operator

Constructor Summary

Comparison(Expression left, Expression right, Comparison.Operator operator)

Method Summary

void	acceptVisitor(LanguageObjectVisitor visitor)
Expression	getLeftExpression() Get left expression.
Comparison.Operator	getOperator() Get the operator
Expression	getRightExpression() Get right expression.
void	setLeftExpression(Expression expression) Set left expression of criteria
void	setOperator(Comparison.Operator operator) Set the operator
void	setRightExpression(Expression expression) Set right expression of criteria

Methods inherited from class org.teiid.language.Condition

getType

Methods inherited from class org.teiid.language.BaseLanguageObject

toString

Methods inherited from class java.lang.Object

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

Constructor Detail

Comparison

public Comparison(Expression left,
                  Expression right,
                  Comparison.Operator operator)

Method Detail

getLeftExpression

public Expression getLeftExpression()

Get left expression.

Returns:

Left expression

getRightExpression

public Expression getRightExpression()

Get right expression.

Returns:

Right expression

getOperator

public Comparison.Operator getOperator()

Get the operator

Returns:

Operator constant

See Also:

Comparison.Operator

setLeftExpression

public void setLeftExpression(Expression expression)

Set left expression of criteria

setRightExpression

public void setRightExpression(Expression expression)

Set right expression of criteria

setOperator

public void setOperator(Comparison.Operator operator)

Set the operator

See Also:

Comparison.Operator

acceptVisitor

public void acceptVisitor(LanguageObjectVisitor visitor)

Specified by:

acceptVisitor in interface LanguageObject