com.reactive.hzdfs.SpringContext.java Source code

Introduction

Here is the source code for com.reactive.hzdfs.SpringContext.java

Source

/* ============================================================================
*
* FILE: SpringContext.java
*
The MIT License (MIT)
    
Copyright (c) 2016 Sutanu Dalui
    
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
    
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
    
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*
* ============================================================================
*/
package com.reactive.hzdfs;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

/**
 * A helper class for gaining access to the spring context, in non spring managed classes.
 * Particularly, we are using this utility in the JAX-RS service classes to invoke core functionalities.
 */
public final class SpringContext implements ApplicationContextAware {

    protected static ApplicationContext springContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        springContext = applicationContext;
    }

    /**
     * 
     * @param type
     * @return
     */
    public static <T> T getBean(Class<T> type) {
        if (springContext == null)
            throw new IllegalStateException("Context not formed");
        return springContext.getBean(type);
    }

    /**
     * 
     * @return
     */
    public static ApplicationContext getContext() {
        if (springContext == null)
            throw new IllegalStateException("Context not formed");
        return springContext;

    }
}