/*
JPC: An x86 PC Hardware Emulator for a pure Java Virtual Machine
Release Version 2.4
A project from the Physics Dept, The University of Oxford
Copyright (C) 2007-2010 The University of Oxford
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2 as published by
the Free Software Foundation.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Details (including contact information) can be found at:
jpc.sourceforge.net
or the developer website
sourceforge.net/projects/jpc/
Conceived and Developed by:
Rhys Newman, Ian Preston, Chris Dennis
End of licence header
*/
package org.jpc.debugger.util;
import java.util.*;
import java.util.ArrayList;
public class ObjectDatabase
{
private Map<Class, Object> table;
public ObjectDatabase()
{
table = new HashMap<Class, Object>();
}
public synchronized boolean addObject(Class cls, Object value)
{
if (value == null)
return false;
if (table.containsKey(cls))
return false;
table.put(cls, value);
return true;
}
public synchronized boolean addObject(Object value)
{
if (value == null)
return false;
Class cls = (Class) value.getClass();
return addObject(cls, value);
}
public synchronized Object getObject(Class cls)
{
return table.get(cls);
}
public synchronized Object removeObject(Object obj)
{
if (obj == null)
return null;
return removeObject(obj.getClass());
}
public synchronized Object removeObject(Class cls)
{
if (cls == null)
return null;
return table.remove(cls);
}
public synchronized List<Object> entries()
{
return new ArrayList<Object>(table.values());
}
}