org.ops4j.util.property
Class FallbackPropertyResolver

java.lang.Object
  org.ops4j.util.property.FallbackPropertyResolver

All Implemented Interfaces:

PropertyResolver

Direct Known Subclasses:

DictionaryPropertyResolver, PropertiesPropertyResolver

public abstract class FallbackPropertyResolver
extends java.lang.Object
implements PropertyResolver

Resolves properties by first looking at itself and then to a falback resolver.

Since:

0.5.0, January 16, 2008

Author:

Alin Dreghiciu

Constructor Summary

FallbackPropertyResolver(PropertyResolver fallbackResolver)
Creates a property resolver with a fallback resolver.

Method Summary

protected abstract java.lang.String	findProperty(java.lang.String propertyName) Resolves a property by name.
java.lang.String	get(java.lang.String propertyName) Resolves a property based on its name by first calling the findProperty() and then fallback to falback resolver if property value is null.

Methods inherited from class java.lang.Object

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

Constructor Detail

FallbackPropertyResolver

public FallbackPropertyResolver(PropertyResolver fallbackResolver)

Creates a property resolver with a fallback resolver.

Parameters:

fallbackResolver - rersolver to use to resolve properties

Method Detail

get

public java.lang.String get(java.lang.String propertyName)

Resolves a property based on its name by first calling the findProperty() and then fallback to falback resolver if property value is null.

Specified by:

get in interface PropertyResolver

Parameters:

propertyName - property name to be resolved

Returns:

value of property or null if property is not set or is empty.

findProperty

protected abstract java.lang.String findProperty(java.lang.String propertyName)

Resolves a property by name.

Parameters:

propertyName - name of the property to be resolved.

Returns:

value of property