nh.examples.springintegration.order.client.ClientContext.java Source code

Introduction

Here is the source code for nh.examples.springintegration.order.client.ClientContext.java

Source

/**********************************************************************
 * Copyright (c) 2010 Nils Hartmann and others
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Nils Hartmann initial implementation
 **********************************************************************/
package nh.examples.springintegration.order.client;

import static com.google.common.base.Preconditions.checkNotNull;

import org.springframework.context.ApplicationContext;

/**
 * @author Nils Hartmann (nils@nilshartmann.net)
 * 
 */
public class ClientContext {

    private static ClientContext _instance;

    static void createInstance(ApplicationContext applicationContext) {
        if (_instance != null) {
            throw new IllegalStateException("clientcontext already initialized");
        }
        _instance = new ClientContext(applicationContext);
    }

    private final ApplicationContext _applicationContext;

    private ClientContext(ApplicationContext applicationContext) {
        _applicationContext = checkNotNull(applicationContext);
    }

    public static <T> T getBean(Class<T> type) {
        checkNotNull(type);
        return _instance._applicationContext.getBean(type);
    }

}