com.oreilly.springdata.rest.client.ProductsClient.java Source code

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Here is the source code for com.oreilly.springdata.rest.client.ProductsClient.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 com.oreilly.springdata.rest.client;

import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.hateoas.Link;
import org.springframework.hateoas.Resource;
import org.springframework.hateoas.ResourceSupport;
import org.springframework.hateoas.Resources;
import org.springframework.web.client.RestOperations;

/**
 * Sample client to access {@link Products} exposed by the REST exporter.
 * 
 * @author Oliver Gierke
 */
class ProductsClient {

    /**
     * A sample DTO to have a {@link Resource} object typed to {@link com.oreilly.springdata.rest.core.Product}.
     * 
     * @author Oliver Gierke
     */
    static class Product extends Resource<com.oreilly.springdata.rest.core.Product> {

    }

    /**
     * A DTO for a paged collection resource of {@link Product}s.
     * 
     * @author Oliver Gierke
     */
    static class Products extends Resources<Product> {

    }

    public static void main(String[] args) {

        // Bootstrap RestOperations instance using Spring
        ConfigurableApplicationContext context = new AnnotationConfigApplicationContext(ClientConfiguration.class);
        context.registerShutdownHook();
        RestOperations operations = context.getBean(RestOperations.class);

        // Access root resource
        ResourceSupport root = operations.getForObject(ClientConfiguration.BASE_URL, Resource.class);
        Link productLink = root.getLink(ClientConfiguration.PRODUCTS_REL);

        // Follow link to access products
        Products products = operations.getForObject(productLink.getHref(), Products.class);
        System.out.println(products.getContent().iterator().next());
    }
}