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 java.lang.Object
implements Value<T>

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

Field Summary

Fields

Modifier and Type	Field and Description
private Value<? extends T>	defaultValue
private Value<T>	value

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
T	getValue() Get the actual value.

Methods inherited from class java.lang.Object

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

Field Detail

value

private final Value<T> value

defaultValue

private final Value<? extends T> defaultValue

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 java.lang.IllegalStateException

Get the actual value.

Specified by:

getValue in interface Value<T>

Returns:

the actual value

Throws:

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