/*
* Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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package com.sun.corba.se.impl.orbutil ;
/**
* A convenience class for retrieving the string value of a system
* property as a privileged action. This class is directly copied
* from sun.security.action.GetPropertyAction in order to avoid
* depending on the sun.security.action package.
*
* <p>An instance of this class can be used as the argument of
* <code>AccessController.doPrivileged</code>.
*
* <p>The following code retrieves the value of the system
* property named <code>"prop"</code> as a privileged action: <p>
*
* <pre>
* String s = (String) java.security.AccessController.doPrivileged(
* new GetPropertyAction("prop"));
* </pre>
*
* @author Roland Schemers
* @author Ken Cavanaugh
* @see java.security.PrivilegedAction
* @see java.security.AccessController
*/
public class GetPropertyAction implements java.security.PrivilegedAction {
private String theProp;
private String defaultVal;
/**
* Constructor that takes the name of the system property whose
* string value needs to be determined.
*
* @param theProp the name of the system property.
*/
public GetPropertyAction(String theProp) {
this.theProp = theProp;
}
/**
* Constructor that takes the name of the system property and the default
* value of that property.
*
* @param theProp the name of the system property.
* @param defaulVal the default value.
*/
public GetPropertyAction(String theProp, String defaultVal) {
this.theProp = theProp;
this.defaultVal = defaultVal;
}
/**
* Determines the string value of the system property whose
* name was specified in the constructor.
*
* @return the string value of the system property,
* or the default value if there is no property with that key.
*/
public Object run() {
String value = System.getProperty(theProp);
return (value == null) ? defaultVal : value;
}
}