/*
* JBoss, Home of Professional Open Source.
* Copyright 2007, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This 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 software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.deployers.spi.attachments;
import java.security.AccessController;
import org.jboss.util.builder.AbstractBuilder;
/**
* AttachmentsBuilder.
*
* @author <a href="adrian@jboss.org">Adrian Brock</a>
* @version $Revision: 1.1 $
*/
class AttachmentsBuilder
{
/** The default attachments builder */
private static String DEFAULT_FACTORY = "org.jboss.deployers.plugins.attachments.DefaultAttachmentsFactory";
/** The singleton */
private static AttachmentsFactory singleton;
/**
* Get the instance
*
* @return the instance
*/
static synchronized AttachmentsFactory getInstance()
{
if (singleton == null)
{
AbstractBuilder<AttachmentsFactory> builder = new AbstractBuilder<AttachmentsFactory>(AttachmentsFactory.class, DEFAULT_FACTORY);
singleton = AccessController.doPrivileged(builder);
}
return singleton;
}
}