com.oasisdigital.sdre.RestbucksWebApplicationInitializer.java Source code

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Here is the source code for com.oasisdigital.sdre.RestbucksWebApplicationInitializer.java

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/*
 * Copyright 2012-2013 the original author or authors.
 *
 * 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 com.oasisdigital.sdre;

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.ComponentScan.Filter;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.data.rest.webmvc.config.RepositoryRestMvcConfiguration;
import org.springframework.hateoas.config.EnableHypermediaSupport;
import org.springframework.http.MediaType;
import org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter;
import org.springframework.stereotype.Service;
import org.springframework.web.WebApplicationInitializer;
import org.springframework.web.servlet.config.annotation.ContentNegotiationConfigurer;
import org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;

/**
 * Servlet 3.0 {@link WebApplicationInitializer} using Spring 3.2 convenient base class
 * {@link AbstractAnnotationConfigDispatcherServletInitializer}. It essentially sets up a root application context from
 * {@link ApplicationConfig}, and a dispatcher servlet application context from {@link RepositoryRestMvcConfiguration}
 * (enabling Spring Data REST) and {@link WebConfiguration} for general Spring MVC customizations.
 * 
 * @author Oliver Gierke
 */
public class RestbucksWebApplicationInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {

    /* 
     * (non-Javadoc)
     * @see org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer#getRootConfigClasses()
     */
    @Override
    protected Class<?>[] getRootConfigClasses() {
        return new Class<?>[] { ApplicationConfig.class };
    }

    /* 
     * (non-Javadoc)
     * @see org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer#getServletConfigClasses()
     */
    @Override
    protected Class<?>[] getServletConfigClasses() {
        return new Class<?>[] { WebConfiguration.class };
    }

    /* 
     * (non-Javadoc)
     * @see org.springframework.web.servlet.support.AbstractDispatcherServletInitializer#getServletMappings()
     */
    @Override
    protected String[] getServletMappings() {
        return new String[] { "/" };
    }

    /* 
     * (non-Javadoc)
     * @see org.springframework.web.servlet.support.AbstractDispatcherServletInitializer#getServletFilters()
     */
    @Override
    protected javax.servlet.Filter[] getServletFilters() {
        return new javax.servlet.Filter[] { new OpenEntityManagerInViewFilter() };
    }

    /**
     * Web layer configuration enabling Spring MVC, Spring Hateoas hypermedia support.
     * 
     * @author Oliver Gierke
     */
    @Configuration
    @EnableHypermediaSupport
    @Import(RepositoryRestMvcConfiguration.class)
    @ComponentScan(excludeFilters = @Filter({ Service.class, Configuration.class }))
    public static class WebConfiguration extends DelegatingWebMvcConfiguration {

        /*
         * (non-Javadoc)
         * @see org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport#configureContentNegotiation(org.springframework.web.servlet.config.annotation.ContentNegotiationConfigurer)
         */
        @Override
        public void configureContentNegotiation(ContentNegotiationConfigurer configurer) {
            configurer.defaultContentType(MediaType.APPLICATION_JSON);
        }
    }
}