WebRuntimeSpringConfiguration.java

/*
 * Copyright 2004-2005 Graeme Rocher
 *
 * 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.grails.web.servlet.context.support;

import javax.servlet.ServletContext;

import grails.web.servlet.context.GrailsWebApplicationContext;
import grails.core.GrailsApplication;
import org.grails.spring.DefaultRuntimeSpringConfiguration;
import org.springframework.beans.factory.support.DefaultListableBeanFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericApplicationContext;
import org.springframework.util.Assert;
import org.springframework.web.context.ConfigurableWebApplicationContext;
import org.springframework.web.context.ServletContextAware;

/**
 * Subclasses DefaultRuntimeSpringConfiguration to provide construction of WebApplicationContext instances.
 *
 * @author Graeme Rocher
 * @since 1.0
 */
public class WebRuntimeSpringConfiguration extends DefaultRuntimeSpringConfiguration implements ServletContextAware {


    private GrailsApplication grailsApplication;

    public WebRuntimeSpringConfiguration(ApplicationContext parent) {
        super(parent);
    }

    public WebRuntimeSpringConfiguration(ApplicationContext parent, ClassLoader cl) {
        super(parent, cl);
    }

    public WebRuntimeSpringConfiguration(ApplicationContext parent, ClassLoader cl, GrailsApplication grailsApplication) {
        super(parent, cl);
        this.grailsApplication = grailsApplication;
    }

    public WebRuntimeSpringConfiguration(ApplicationContext parent, GrailsApplication grailsApplication) {
        super(parent);
        this.grailsApplication = grailsApplication;
    }

    @Override
    protected GenericApplicationContext createApplicationContext(ApplicationContext parentCtx) {
        if (parentCtx != null && beanFactory != null) {
            Assert.isInstanceOf(DefaultListableBeanFactory.class, beanFactory,
                "ListableBeanFactory set must be a subclass of DefaultListableBeanFactory");

            GrailsWebApplicationContext ctx = new GrailsWebApplicationContext((DefaultListableBeanFactory) beanFactory, grailsApplication);
            ctx.setParent(parentCtx);
            return ctx;
        }

        if (beanFactory != null) {
            Assert.isInstanceOf(DefaultListableBeanFactory.class, beanFactory,
                "ListableBeanFactory set must be a subclass of DefaultListableBeanFactory");

            return new GrailsWebApplicationContext((DefaultListableBeanFactory) beanFactory, grailsApplication);
        }

        if (parentCtx != null) {
            GrailsWebApplicationContext ctx = new GrailsWebApplicationContext(grailsApplication);
            ctx.setParent(parentCtx);
            return ctx;
        }

        return new GrailsWebApplicationContext();
    }

    public void setServletContext(ServletContext servletContext) {
        initialiseApplicationContext();

        if (context instanceof ConfigurableWebApplicationContext) {
            ((ConfigurableWebApplicationContext)context).setServletContext(servletContext);
        }
    }
}