org.codehaus.plexus.interpolation
Class PropertiesBasedValueSource

java.lang.Object
  org.codehaus.plexus.interpolation.AbstractValueSource
      org.codehaus.plexus.interpolation.PropertiesBasedValueSource

All Implemented Interfaces:

ValueSource

public class PropertiesBasedValueSource
extends AbstractValueSource

ValueSource implementation that wraps a Properties instance, and does a simple lookup of the entire expression string as the parameter for Properties.getProperty(String), returning the result as the resolved value.

Version:

$Id$

Author:

jdcasey

Constructor Summary

PropertiesBasedValueSource(Properties properties)
Wrap the specified Properties object for use as a value source.

Method Summary

Object

getValue(String expression)

Methods inherited from class org.codehaus.plexus.interpolation.AbstractValueSource

addFeedback, addFeedback, clearFeedback, getFeedback

Methods inherited from class java.lang.Object

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

Constructor Detail

PropertiesBasedValueSource

public PropertiesBasedValueSource(Properties properties)

Wrap the specified Properties object for use as a value source. Nulls are allowed.

Parameters:

properties - The properties instance to wrap.

Method Detail

getValue

public Object getValue(String expression)

Returns:

the result of Properties.getProperty(String), using the entire expression as the key to lookup. If the wrapped properties instance is null, simply return null.