package org.jacorb.notification;
/*
* JacORB - a free Java ORB
*
* Copyright (C) 1999-2004 Gerald Brose
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.slf4j.Logger;
import org.jacorb.notification.util.LogUtil;
import org.omg.CosNotifyFilter.Filter;
import org.omg.CosNotifyFilter.FilterAdminOperations;
import org.omg.CosNotifyFilter.FilterNotFound;
import edu.emory.mathcs.backport.java.util.concurrent.atomic.AtomicInteger;
/**
* @author Alphonse Bendt
* @version $Id: FilterManager.java,v 1.18 2009-05-03 21:34:46 andre.spiegel Exp $
*/
public class FilterManager implements FilterAdminOperations
{
public static final FilterManager EMPTY_FILTER_MANAGER = new FilterManager(Collections.EMPTY_MAP);
private static final Integer[] INTEGER_ARRAY_TEMPLATE = new Integer[0];
////////////////////////////////////////
private final Map filters_;
private final Object filtersLock_ = new Object();
private boolean filtersModified_;
private final List filterList_ = new ArrayList();
private final List filtersReadOnlyView_ = Collections.unmodifiableList(filterList_);
private final AtomicInteger filterIdPool_ = new AtomicInteger(0);
private final Logger logger_;
////////////////////////////////////////
protected FilterManager(Map filters)
{
filters_ = filters;
filtersModified_ = true;
logger_ = LogUtil.getLogger(getClass().getName());
}
public FilterManager()
{
this(new HashMap());
}
////////////////////////////////////////
private Integer newFilterID()
{
return new Integer(filterIdPool_.incrementAndGet());
}
public int add_filter(Filter filter)
{
Integer _key = newFilterID();
if (logger_.isInfoEnabled())
{
try
{
if (!((org.omg.CORBA.portable.ObjectImpl) filter)._is_local())
{
logger_.info("filter is not local!");
}
} catch (Exception e)
{
// ignored
}
}
synchronized (filtersLock_)
{
filters_.put(_key, filter);
filtersModified_ = true;
}
return _key.intValue();
}
public void remove_filter(int filterId) throws FilterNotFound
{
Integer _key = new Integer(filterId);
synchronized (filtersLock_)
{
if (filters_.containsKey(_key))
{
filters_.remove(_key);
filtersModified_ = true;
}
else
{
throwFilterNotFound(_key);
}
}
}
public Filter get_filter(int filterId) throws FilterNotFound
{
Integer _key = new Integer(filterId);
final Filter _filter;
synchronized (filtersLock_)
{
_filter = (Filter) filters_.get(_key);
}
if (_filter == null)
{
throwFilterNotFound(_key);
}
return _filter;
}
private void throwFilterNotFound(Integer filterId) throws FilterNotFound
{
throw new FilterNotFound("Filter with ID=" + filterId + " does not exist");
}
public int[] get_all_filters()
{
final Integer[] _keys;
synchronized (filtersLock_)
{
_keys = (Integer[]) filters_.keySet().toArray(INTEGER_ARRAY_TEMPLATE);
}
final int[] _intKeys = new int[_keys.length];
for (int x = 0; x < _keys.length; ++x)
{
_intKeys[x] = _keys[x].intValue();
}
return _intKeys;
}
public void remove_all_filters()
{
synchronized (filtersLock_)
{
filters_.clear();
filtersModified_ = true;
}
}
public List getFilters()
{
synchronized (filtersLock_)
{
if (filtersModified_)
{
filterList_.clear();
filterList_.addAll(filters_.values());
filtersModified_ = false;
}
}
return filtersReadOnlyView_;
}
}