com.sun.jdo.spi.persistence.utility.MergedBundle Maven / Gradle / Ivy
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/*
* MappingContext.java
*
* Created on January 28, 2002, 6:30 PM
*/
package com.sun.jdo.spi.persistence.utility;
import java.util.*;
/** Special resource bundle which delegates to two others.
* Ideally could just set the parent on the first, but this is protected,
* so it might not work. It's still unclear whether that approach would work
* in this subclass because it may break the localization fall through
* mechanism if used.
* Note: This code is copied from NbBundle in the openide sources with
* the following modifications:
* - reformatting
* - making variables final
* - renaming variables and some params
* - removing locale code
* - creating the merged set of keys using jdk classes and not nb utils
*
* @author Rochelle Raccah
* @version %I%
*/
public class MergedBundle extends ResourceBundle
{
private final ResourceBundle _mainBundle, _parentBundle;
public MergedBundle (ResourceBundle mainBundle,
ResourceBundle parentBundle)
{
_mainBundle = mainBundle;
_parentBundle = parentBundle;
}
public Enumeration getKeys () { return mergeKeys(); }
private Enumeration mergeKeys ()
{
Set noDuplicatesMerge =
new HashSet(getCollection(_mainBundle.getKeys()));
noDuplicatesMerge.addAll(getCollection(_parentBundle.getKeys()));
return Collections.enumeration(noDuplicatesMerge);
}
private Collection getCollection (Enumeration enumeration)
{
List returnList = new ArrayList();
if (enumeration != null)
{
while (enumeration.hasMoreElements())
returnList.add(enumeration.nextElement());
}
return returnList;
}
protected Object handleGetObject (String key)
throws MissingResourceException
{
try
{
return _mainBundle.getObject(key);
}
catch (MissingResourceException mre) // try the other bundle
{
return _parentBundle.getObject(key);
}
}
}