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/*******************************************************************************
* Copyright 2012 Internet2
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
******************************************************************************/
/**
* @author mchyzer
* $Id: ContextContainer.java,v 1.2 2009-10-11 22:04:18 mchyzer Exp $
*/
package edu.internet2.middleware.grouper.grouperUi.beans;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
import javax.servlet.ServletContext;
import edu.emory.mathcs.backport.java.util.Collections;
import edu.internet2.middleware.grouper.cache.GrouperCache;
import edu.internet2.middleware.grouper.ui.GrouperUiFilter;
import edu.internet2.middleware.subject.Source;
import edu.internet2.middleware.subject.provider.SourceManager;
/**
* container for global things in the context attribute
*/
public class ContextContainer {
/** singleton */
private static ContextContainer instance = new ContextContainer();
/**
* return the isntance
* @return the instance
*/
public static ContextContainer instance() {
return instance;
}
/**
* store to session scope
*/
public void storeToContext() {
ServletContext servletContext = GrouperUiFilter.retrieveHttpServlet().getServletContext();
if (servletContext.getAttribute("contextContainer") != instance) {
servletContext.setAttribute("contextContainer", instance);
}
}
/** cache of sources */
private static GrouperCache> sourcesCache = new GrouperCache>(
ContextContainer.class.getName() + ".sources", 100, false, 120, 120, false);
/**
* available sourceIds for the upload form
* @return the source ids
*/
public List getSources() {
try {
List sources = sourcesCache.get(Boolean.TRUE);
if (sources == null) {
sources = new ArrayList(SourceManager.getInstance().getSources());
//lets sort them by id
Collections.sort(sources, new Comparator() {
public int compare(Object o1, Object o2) {
return ((Source)o1).getId().compareTo(((Source)o2).getId());
}
});
sourcesCache.put(Boolean.TRUE, sources);
}
return sources;
} catch (Exception e) {
//TODO take out this try/catch when upgrading to grouper 1.5 and the new source api
throw new RuntimeException(e);
}
}
}
