org.jboss.msc.value
Class DefaultValue<T>

java.lang.Object
  org.jboss.msc.value.DefaultValue<T>

Type Parameters:

T - the value type

All Implemented Interfaces:

Value<T>

public final class DefaultValue<T>
extends Object
implements Value<T>

A defaulted value. If the delegate value returns null, a default value will be returned in its place.

Constructor Summary

DefaultValue(Value<T> value, Value<? extends T> defaultValue)
Construct a new instance.

Method Summary

T	getValue() Get the actual value.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultValue

public DefaultValue(Value<T> value,
                    Value<? extends T> defaultValue)

Construct a new instance.

Parameters:

value - the delegate value

defaultValue - the value to use if the delegate value returns null

Method Detail

getValue

public T getValue()
           throws IllegalStateException

Get the actual value.

Specified by:

getValue in interface Value<T>

Returns:

the actual value

Throws:

IllegalStateException - if the value is time-sensitive and the current state does not allow retrieval.