com.bea.p13n.expression.operator
Class If

java.lang.Object
  |
  +--com.bea.p13n.expression.internal.ComplexExpressionImpl
        |
        +--com.bea.p13n.expression.operator.Operator
              |
              +--com.bea.p13n.expression.operator.If

public final class If

extends Operator

Implementation of the If operator. The If operator consists of three parts, the condition, the true action and the false action. If the condition evaluates to true the true action is evaluated otherwise the false condition is evaluated.
Input 1: A Boolean object or Expression returning a Boolean object.
Input 2: An Expression
Input 3 (optional): An Expression.
Returns: The result of evaluating the true or false expression.

See Also:

Serialized Form

Constructor Summary

If()
Constructs an empty operator and operands can be added later by calling addSubExpression() on this.

If(java.lang.Object logical, java.lang.Object trueEx, java.lang.Object falseEx)
Constructs this operator for the given operands.

Method Summary

java.lang.Object	getFalseExpression()
java.lang.Object	getLogicalExpression()
java.lang.Class[]	getParameterSignature()
java.lang.Object	getTrueExpression()

Methods inherited from class com.bea.p13n.expression.operator.Operator

leftHandSide, operand, rightHandSide

Methods inherited from class com.bea.p13n.expression.internal.ComplexExpressionImpl

addListener, addSubExpression, clearCache, clone, createProxyExpression, equals, getCachedValue, getParent, getSource, getSubExpression, getSubExpressionCount, getUserData, hashCode, isCached, isCacheEnabled, isEqualitySubExpression, notifyListeners, removeAllSubExpressions, removeListener, removeSubExpression, removeSubExpression, setCachedValue, setCacheEnabled, setParent, setSource, setSubExpression, setUserData, toString, write

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

If

public If()

Constructs an empty operator and operands can be added later by calling addSubExpression() on this.

If

public If(java.lang.Object logical,
          java.lang.Object trueEx,
          java.lang.Object falseEx)

Constructs this operator for the given operands.

Parameters:

logical - A Boolean object or expression returning a Boolean object.

trueEx - An expression that is executed if logical returns Boolean true object.

falseEx - An expression that is executed if logical returns Boolean false object.

Method Detail

getLogicalExpression

public java.lang.Object getLogicalExpression()

getTrueExpression

public java.lang.Object getTrueExpression()

getFalseExpression

public java.lang.Object getFalseExpression()

getParameterSignature

public java.lang.Class[] getParameterSignature()

Overrides:

getParameterSignature in class com.bea.p13n.expression.internal.ComplexExpressionImpl