Package 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.

Author:

jdcasey

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
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 Details

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 Details

getValue

public Object getValue(String expression)

Parameters:

expression - The 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.