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//
// ========================================================================
// Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.annotations;
import java.util.concurrent.ConcurrentHashMap;
import org.eclipse.jetty.annotations.AnnotationParser.AbstractHandler;
import org.eclipse.jetty.annotations.AnnotationParser.ClassInfo;
import org.eclipse.jetty.util.ConcurrentHashSet;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
/**
* ClassInheritanceHandler
*
* As asm scans for classes, remember the type hierarchy.
*/
public class ClassInheritanceHandler extends AbstractHandler
{
private static final Logger LOG = Log.getLogger(ClassInheritanceHandler.class);
ConcurrentHashMap<String, ConcurrentHashSet<String>> _inheritanceMap;
public ClassInheritanceHandler(ConcurrentHashMap<String, ConcurrentHashSet<String>> map)
{
_inheritanceMap = map;
}
public void handle(ClassInfo classInfo)
{
try
{
for (int i=0; classInfo.getInterfaces() != null && i < classInfo.getInterfaces().length;i++)
{
addToInheritanceMap(classInfo.getInterfaces()[i], classInfo.getClassName());
//_inheritanceMap.add (classInfo.getInterfaces()[i], classInfo.getClassName());
}
//To save memory, we don't record classes that only extend Object, as that can be assumed
if (!"java.lang.Object".equals(classInfo.getSuperName()))
{
addToInheritanceMap(classInfo.getSuperName(), classInfo.getClassName());
//_inheritanceMap.add(classInfo.getSuperName(), classInfo.getClassName());
}
}
catch (Exception e)
{
LOG.warn(e);
}
}
private void addToInheritanceMap (String interfaceOrSuperClassName, String implementingOrExtendingClassName)
{
//As it is likely that the interfaceOrSuperClassName is already in the map, try getting it first
ConcurrentHashSet<String> implementingClasses = _inheritanceMap.get(interfaceOrSuperClassName);
//If it isn't in the map, then add it in, but test to make sure that someone else didn't get in
//first and add it
if (implementingClasses == null)
{
implementingClasses = new ConcurrentHashSet<String>();
ConcurrentHashSet<String> tmp = _inheritanceMap.putIfAbsent(interfaceOrSuperClassName, implementingClasses);
if (tmp != null)
implementingClasses = tmp;
}
implementingClasses.add(implementingOrExtendingClassName);
}
}
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