/*
 * ============================================================================
 * GNU Lesser General Public License
 * ============================================================================
 *
 * Beanlet - JSE Application Container.
 * Copyright (C) 2006  Leon van Zantvoort
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307, USA.
 * 
 * Leon van Zantvoort
 * 243 Acalanes Drive #11
 * Sunnyvale, CA 94086
 * USA
 *
 * zantvoort@users.sourceforge.net
 * http://beanlet.org
 */
package org.beanlet.impl;

import org.jargo.ComponentContext;
import org.beanlet.Inject;
import org.beanlet.Remove;
import org.jargo.InvocationInterceptor;
import org.jargo.InvocationContext;

/**
 * @author Leon van Zantvoort
 */
public final class RemoveInvocationInterceptor implements 
        InvocationInterceptor {
    
    private ComponentContext jctx;
    
    private final boolean retainIfException;
    
    public RemoveInvocationInterceptor(Remove remove) {
        retainIfException = remove.retainIfException();
    }
    
    @Inject public void setComponentContext(ComponentContext jctx) {
        this.jctx = jctx;
    }

    public boolean isLifecycleInterceptor() {
        return false;
    }

    public Object intercept(InvocationContext ctx) throws Exception {
        boolean remove = !retainIfException;
        try {
            Object result = ctx.proceed();
            remove = true;
            return result; 
        } finally {
            if (remove) {
                jctx.reference().invalidate();
            }
        }
    }
}