PreDestroyer.java

/**
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.guiceyfruit.support;

import com.google.common.collect.Lists;
import java.util.List;
import org.guiceyfruit.support.internal.CloseErrorsImpl;

/**
 * A class which is stored in a scope which is then used to close any objects in the same scope
 * which have a shut down hook associated with them (such as @PreDestroy from JSR 250)
 *
 * @version $Revision: 1.1 $
 */
public class PreDestroyer {
  List<CloseTask> closeTasks = Lists.newArrayList();

  public void addCloseTask(CloseTask closer) {
    closeTasks.add(closer);
  }

  public void close() throws CloseFailedException {
    CloseErrors errors = new CloseErrorsImpl(this);
    for (CloseTask task : closeTasks) {
      try {
        task.perform();
      }
      catch (Exception e) {
        errors.closeError(this, task.getSource(), e);
      }
    }
    errors.throwIfNecessary();
  }
}