/*
* 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.
*
*/
package org.jacorb.notification.filter;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.jacorb.config.*;
import org.slf4j.Logger;
import org.jacorb.notification.IContainer;
import org.jacorb.notification.conf.Attributes;
import org.jacorb.notification.filter.etcl.ETCLFilter;
import org.jacorb.notification.interfaces.Disposable;
import org.jacorb.notification.util.LogUtil;
import org.jacorb.util.ObjectUtil;
import org.omg.CORBA.Any;
import org.omg.CORBA.ORB;
import org.omg.CosNotifyFilter.InvalidGrammar;
import org.picocontainer.ComponentAdapter;
import org.picocontainer.MutablePicoContainer;
import org.picocontainer.defaults.ComponentAdapterFactory;
import org.picocontainer.defaults.ConstructorInjectionComponentAdapterFactory;
/**
* @author Alphonse Bendt
* @version $Id: DefaultFilterFactoryDelegate.java,v 1.7 2009-05-03 21:34:47 andre.spiegel Exp $
*/
public class DefaultFilterFactoryDelegate implements IFilterFactoryDelegate, Disposable
{
private final List availableFilters_ = new ArrayList();
private final MutablePicoContainer filterPico_;
private final ORB orb_;
private final Logger logger_;
private final IContainer container_;
private final ComponentAdapterFactory componentAdapterFactory_;
// //////////////////////////////////////
public DefaultFilterFactoryDelegate(IContainer container, Configuration config, ComponentAdapterFactory componentAdapterFactory)
{
componentAdapterFactory_ = componentAdapterFactory;
container_ = container;
MutablePicoContainer parent = container.getContainer();
filterPico_ = parent;
orb_ = (ORB) parent.getComponentInstanceOfType(ORB.class);
logger_ = LogUtil.getLogger(config, getClass().getName());
loadFilterPlugins(config);
}
public DefaultFilterFactoryDelegate(IContainer container, Configuration config)
{
this(container, config, new ConstructorInjectionComponentAdapterFactory());
}
public void dispose()
{
container_.destroy();
}
private void loadFilterPlugins(Configuration conf)
{
org.jacorb.config.Configuration config = (org.jacorb.config.Configuration)conf;
ComponentAdapter etclCA = componentAdapterFactory_.createComponentAdapter(ETCLFilter.CONSTRAINT_GRAMMAR, ETCLFilter.class, null);
// add default ETCL Filter
filterPico_.registerComponent(etclCA);
availableFilters_.add(ETCLFilter.CONSTRAINT_GRAMMAR);
Iterator i = config.getAttributeNamesWithPrefix(Attributes.FILTER_PLUGIN_PREFIX).iterator();
while (i.hasNext())
{
String key = (String) i.next();
String _clazzName = null;
try
{
String _grammar = key.substring(Attributes.FILTER_PLUGIN_PREFIX.length() + 1);
logger_.info("Loading Filterplugin for Grammar: " + _grammar);
_clazzName = conf.getAttribute(key);
Class _clazz = ObjectUtil.classForName(_clazzName);
ComponentAdapter customCA = componentAdapterFactory_.createComponentAdapter(_grammar, _clazz, null);
filterPico_.registerComponent(customCA);
availableFilters_.add(_grammar);
} catch (ConfigurationException e)
{
logger_.error("Unable to access attribute: " + key, e);
} catch (ClassNotFoundException e)
{
logger_.error("Property " + key + ": Unable to load FilterPlugin " + _clazzName + ". The FilterPlugin will not be available.", e);
}
}
}
private String getAvailableConstraintLanguages()
{
Iterator i = availableFilters_.iterator();
StringBuffer b = new StringBuffer((String) i.next());
while (i.hasNext())
{
b.append(", ");
b.append(i.next());
}
return b.toString();
}
public AbstractFilter create_filter_servant(String grammar) throws InvalidGrammar
{
AbstractFilter _filterServant = (AbstractFilter) filterPico_.getComponentInstance(grammar);
if (_filterServant == null)
{
logger_.error("unable to create FilterServant as grammar " + grammar + " is unknown");
throw new InvalidGrammar("Constraint Language '" + grammar
+ "' is not supported. Supported are: "
+ getAvailableConstraintLanguages());
}
return _filterServant;
}
public MappingFilterImpl create_mapping_filter_servant(Configuration config, String grammar,
Any any) throws InvalidGrammar
{
AbstractFilter _filter = create_filter_servant(grammar);
return new MappingFilterImpl(orb_, config, _filter, any);
}
}