ObjectStore.java

/*
 * JBoss, Home of Professional Open Source
 * Copyright 2010, Red Hat Middleware LLC, 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.arquillian.impl.core;

import java.util.concurrent.ConcurrentHashMap;

/**
 * ObjectStore
 *
 * @author <a href="mailto:aslak@redhat.com">Aslak Knutsen</a>
 * @version $Revision: $
 */
public class ObjectStore
{
   private ConcurrentHashMap<Class<?>, Object> store;
   
   public ObjectStore()
   {
      store = new ConcurrentHashMap<Class<?>, Object>();
   }
   
   public <T> ObjectStore add(Class<T> type, T instance)
   {
      Validate.notNull(type, "Type must be specified");
      Validate.notNull(instance, "Instance must be specified");
      
      store.put(type, instance);
      return this;
   }
   
   public <T> T get(Class<T> type)
   {
      Validate.notNull(type, "Type must be specified");
      
      return type.cast(store.get(type));
   }
   
   public ObjectStore clear()
   {
      store.clear();
      return this;
   }
}