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Weld support for Java SE

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/**
 * JBoss, Home of Professional Open Source
 * Copyright 2009, Red Hat, Inc. and/or its affiliates, and individual
 * contributors by the @authors tag. See the copyright.txt in the
 * distribution for a full listing of individual contributors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jboss.weld.environment.se;

import javax.enterprise.context.ApplicationScoped;
import org.jboss.weld.bootstrap.api.Bootstrap;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

@ApplicationScoped
public class ShutdownManager
{
   
   private static Logger log = LoggerFactory.getLogger(ShutdownManager.class);

   private boolean hasShutdownBeenCalled = false;
   
   private Bootstrap bootstrap;
   
   /**
    * Shutdown Weld SE gracefully.
    */
   public void shutdown()
   {
      synchronized (this)
      {
         
         if (!hasShutdownBeenCalled)
         {
            hasShutdownBeenCalled = true;
            bootstrap.shutdown();
         }
         else
         {
            log.debug("Skipping spurious call to shutdown");
            log.trace("Spurious call to shutdown from: ",
                    Thread.currentThread().getStackTrace());
         }
      }
   }

   public void setBootstrap(Bootstrap bootstrap)
   {
      this.bootstrap = bootstrap;
   }

}