/***************************************************************************
* Copyright (C) by Fabrizio Montesi *
* *
* This program 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 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 Library General Public *
* License along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
* *
* For details about the authors of this software, see the AUTHORS file. *
***************************************************************************/
package jolie.process;
import jolie.ExecutionThread;
import jolie.runtime.HandlerInstallationReason;
public class CurrentHandlerProcess implements Process
{
private CurrentHandlerProcess(){}
private static class LazyHolder {
private LazyHolder() {}
static final CurrentHandlerProcess instance = new CurrentHandlerProcess();
}
static public CurrentHandlerProcess getInstance()
{
return CurrentHandlerProcess.LazyHolder.instance;
}
public Process clone( TransformationReason reason )
{
Process ret = getInstance();
if ( reason instanceof HandlerInstallationReason ) {
HandlerInstallationReason r = (HandlerInstallationReason)reason;
if ( r.handlerId() == null )
ret = ExecutionThread.currentThread().getCurrentScopeCompensation();
else
ret = ExecutionThread.currentThread().getFaultHandler( r.handlerId(), false );
if ( ret == null )
ret = NullProcess.getInstance();
}
return ret;
}
public void run()
{
// We should never execute this process node.
assert( false );
}
public boolean isKillable()
{
// TODO: check this
return true;
}
}