darks.grid.spring.GridSpringContext.java Source code

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Here is the source code for darks.grid.spring.GridSpringContext.java

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/**
 * 
 * Copyright 2015 The Darks Grid Project (Liu lihua)
 *
 * 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 darks.grid.spring;

import javax.servlet.ServletContext;

import org.springframework.context.ApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;

public class GridSpringContext {

    private static ApplicationContext context;

    public static ApplicationContext getContext() {
        return context;
    }

    public static void setContext(ApplicationContext context) {
        GridSpringContext.context = context;
    }

    public static boolean loadContext(ServletContext ctx) {
        context = WebApplicationContextUtils.getWebApplicationContext(ctx);
        return context != null;
    }

    @SuppressWarnings("unchecked")
    public static <T> T getBean(String name) {
        if (context == null)
            return null;
        return (T) context.getBean(name);
    }

    public static <T> T getBean(String name, Class<T> requiredType) {
        if (context == null)
            return null;
        return (T) context.getBean(name, requiredType);
    }

    public static <T> T getBean(Class<T> requiredType) {
        if (context == null)
            return null;
        return (T) context.getBean(requiredType);
    }

    public static boolean containsBean(String name) {
        if (context == null)
            return false;
        return context.containsBean(name);
    }
}