org.databene.script.expression

Class FallbackExpression<E>

java.lang.Object

org.databene.script.expression.CompositeExpression<E,E>

org.databene.script.expression.FallbackExpression<E>

All Implemented Interfaces:

Expression<E>, WrapperExpression<E>

public class FallbackExpression<E>
extends CompositeExpression<E,E>

Expression which evaluates a list of expressions and returns the first result which is not null.

Created: 16.06.2010 07:39:20

Since:

0.5.3

Author:

Volker Bergmann

Field Summary

Fields inherited from class org.databene.script.expression.CompositeExpression

symbol, terms

Constructor Summary

Constructors

Constructor and Description
FallbackExpression(Expression<E>... terms)

Method Summary

Methods

Modifier and Type	Method and Description
E	evaluate(org.databene.commons.Context context)

Methods inherited from class org.databene.script.expression.CompositeExpression

addTerm, getSourceExpressions, getTerms, isConstant, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

FallbackExpression

public FallbackExpression(Expression<E>... terms)

Method Detail

evaluate

public E evaluate(org.databene.commons.Context context)