jpel.language
Class BinaryExpression

java.lang.Object
  |
  +--jpel.language.AbstractExpression
        |
        +--jpel.language.AbstractNamedExpression
              |
              +--jpel.language.BinaryExpression

All Implemented Interfaces:

Expression, NamedExpression, java.io.Serializable

Direct Known Subclasses:

ExpressionAddition, ExpressionAnd, ExpressionAt, ExpressionCommand, ExpressionConcatenation, ExpressionCons, ExpressionDivide, ExpressionEquals, ExpressionGreater, ExpressionGreaterEquals, ExpressionLesser, ExpressionLesserEquals, ExpressionMax, ExpressionMin, ExpressionMultiply, ExpressionNotEquals, ExpressionOr, ExpressionPow, ExpressionRemainder, ExpressionSubtract

public abstract class BinaryExpression

extends AbstractNamedExpression

Representa operacoes que possuem dois operandos.

See Also:

Serialized Form

Constructor Summary

BinaryExpression(java.lang.String binaryOperator, jpel.language.ExpressionType type, jpel.language.Expression leftExpression, jpel.language.Expression rightExpression)

Method Summary

boolean	equivalent(jpel.language.Expression expression) Indica se uma expressão pode ser considerada equivalente à outra.
void	freeVariable(jpel.language.ExpressionList list) Guarda as variáveis livres da expressão em uma lista.
jpel.language.Expression	getLeftExpression()
jpel.language.Expression	getRightExpression()
void	setLeftExpression(jpel.language.Expression newLeftExpression)
void	setRightExpression(jpel.language.Expression newRightExpression)
java.lang.String	toString()

Methods inherited from class jpel.language.AbstractNamedExpression

getName, setName

Methods inherited from class jpel.language.AbstractExpression

createClone, getData, getData, getSource, getType, setData, setSource, setType

Methods inherited from class java.lang.Object

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

Methods inherited from interface jpel.language.Expression

createClone, eval, getData, getData, getSource, getType, rebuild, setData, setSource, setType

Constructor Detail

BinaryExpression

public BinaryExpression(java.lang.String binaryOperator,
                        jpel.language.ExpressionType type,
                        jpel.language.Expression leftExpression,
                        jpel.language.Expression rightExpression)

Method Detail

getLeftExpression

public jpel.language.Expression getLeftExpression()

setLeftExpression

public void setLeftExpression(jpel.language.Expression newLeftExpression)

setRightExpression

public void setRightExpression(jpel.language.Expression newRightExpression)

getRightExpression

public jpel.language.Expression getRightExpression()

freeVariable

public void freeVariable(jpel.language.ExpressionList list)

Description copied from interface: Expression

Guarda as variáveis livres da expressão em uma lista.

Parameters:

list - A lista onde as variáveis livres vão ser inseridas.

equivalent

public boolean equivalent(jpel.language.Expression expression)

Description copied from interface: Expression

Indica se uma expressão pode ser considerada equivalente à outra.

Specified by:

equivalent in interface Expression

Overrides:

equivalent in class AbstractExpression

Parameters:

expression - Expressão ao qual se deseja verificar a equivalência.

Returns:

true, caso as expressões possam ser consideradas equivalentes, false, caso contrário.

toString

public java.lang.String toString()

Overrides:

toString in class AbstractExpression