org.springsource.restbucks.RestbucksWebApplicationInitializer.java Source code

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Here is the source code for org.springsource.restbucks.RestbucksWebApplicationInitializer.java

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/*
 * Copyright 2012 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 org.springsource.restbucks;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
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.repository.support.DomainClassConverter;
import org.springframework.data.repository.support.Repositories;
import org.springframework.data.rest.webmvc.config.RepositoryRestMvcConfiguration;
import org.springframework.format.support.FormattingConversionService;
import org.springframework.hateoas.EntityLinks;
import org.springframework.hateoas.config.EnableEntityLinks;
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.WebMvcConfigurationSupport;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
import org.springsource.restbucks.support.RepositoryLinkMetadataFactory;
import org.springsource.restbucks.support.RestResourceEntityLinks;

/**
 * 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 {@link EntityLinks}.
     *
     * @author Oliver Gierke
     */
    @Configuration
    @Import(RepositoryRestMvcConfiguration.class)
    //@EnableWebMvc
    @EnableEntityLinks
    @ComponentScan(excludeFilters = @Filter({ Service.class, Configuration.class }))
    public static class WebConfiguration extends WebMvcConfigurationSupport {

        @Autowired
        Repositories repositories;

        @Bean
        public DomainClassConverter<FormattingConversionService> domainClassConverter() {
            return new DomainClassConverter<>(mvcConversionService());
        }

        /**
         * Registers a custom {@link EntityLinks} instance for all the types managed by Spring Data REST.
         *
         * @return
         */
        @Bean
        public RestResourceEntityLinks restResourceEntityLinks() throws Exception {
            RepositoryLinkMetadataFactory factory = new RepositoryLinkMetadataFactory(repositories);
            return new RestResourceEntityLinks(factory, "http://localhost");
        }

        /*
         * (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);
        }

    }

}