Add auto-configuration for @EnableHypermediaSupport

If Spring HATEOAS is on the class path, then @EnableHypermediaSupport
will be auto-configured with HAL support.

spring-boot-autoconfigure/pom.xml

@@ -136,6 +136,11 @@
 			<artifactId>spring-data-redis</artifactId>
 			<optional>true</optional>
 		</dependency>
+		<dependency>
+			<groupId>org.springframework.hateoas</groupId>
+			<artifactId>spring-hateoas</artifactId>
+			<optional>true</optional>
+		</dependency>
 		<dependency>
 			<groupId>com.lambdaworks</groupId>
 			<artifactId>lettuce</artifactId>
@@ -229,5 +234,10 @@
 			<artifactId>slf4j-jdk14</artifactId>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.springframework.plugin</groupId>
+			<artifactId>spring-plugin-core</artifactId>
+			<scope>test</scope>
+		</dependency>
 	</dependencies>
 </project>

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/hateoas/HypermediaAutoConfiguration.java

+/*
+ * Copyright 2012-2014 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.springframework.boot.autoconfigure.hateoas;
+
+import org.springframework.boot.autoconfigure.AutoConfigureAfter;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
+import org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.hateoas.Resource;
+import org.springframework.hateoas.config.EnableHypermediaSupport;
+import org.springframework.hateoas.config.EnableHypermediaSupport.HypermediaType;
+
+/**
+ * {@link EnableAutoConfiguration Auto-configuration} for Spring HATEOAS's
+ * {@link EnableHypermediaSupport}.
+ *
+ * @author Roy Clarkson
+ */
+@Configuration
+@ConditionalOnClass(Resource.class)
+@AutoConfigureAfter(WebMvcAutoConfiguration.class)
+public class HypermediaAutoConfiguration {
+
+	@Configuration
+	@EnableHypermediaSupport(type = HypermediaType.HAL)
+	@ConditionalOnWebApplication
+	protected static class HypermediaConfiguration {
+
+	}
+
+}

spring-boot-autoconfigure/src/main/resources/META-INF/spring.factories

@@ -11,6 +11,7 @@ org.springframework.boot.autoconfigure.PropertyPlaceholderAutoConfiguration,\
 org.springframework.boot.autoconfigure.batch.BatchAutoConfiguration,\
 org.springframework.boot.autoconfigure.data.JpaRepositoriesAutoConfiguration,\
 org.springframework.boot.autoconfigure.data.MongoRepositoriesAutoConfiguration,\
+org.springframework.boot.autoconfigure.hateoas.HypermediaAutoConfiguration,\
 org.springframework.boot.autoconfigure.redis.RedisAutoConfiguration,\
 org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration,\
 org.springframework.boot.autoconfigure.jdbc.DataSourceTransactionManagerAutoConfiguration,\

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/hateoas/HypermediaAutoConfigurationTests.java

+/*
+ * Copyright 2012-2014 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.springframework.boot.autoconfigure.hateoas;
+
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.After;
+import org.junit.Test;
+import org.springframework.hateoas.LinkDiscoverer;
+import org.springframework.hateoas.LinkDiscoverers;
+import org.springframework.hateoas.MediaTypes;
+import org.springframework.hateoas.hal.HalLinkDiscoverer;
+import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
+
+/**
+ * Tests for {@link HypermediaAutoConfiguration}.
+ *
+ * @author Roy Clarkson
+ */
+public class HypermediaAutoConfigurationTests {
+
+	private AnnotationConfigWebApplicationContext context;
+
+	@After
+	public void close() {
+		if (this.context != null) {
+			this.context.close();
+		}
+	}
+
+	@Test
+	public void linkDiscoverersCreated() throws Exception {
+		this.context = new AnnotationConfigWebApplicationContext();
+		this.context.register(HypermediaAutoConfiguration.class);
+		this.context.refresh();
+		LinkDiscoverers discoverers = this.context.getBean(LinkDiscoverers.class);
+		assertNotNull(discoverers);
+		LinkDiscoverer discoverer = discoverers.getLinkDiscovererFor(MediaTypes.HAL_JSON);
+		assertTrue(HalLinkDiscoverer.class.isInstance(discoverer));
+	}
+
+}

spring-boot-dependencies/pom.xml

@@ -88,6 +88,7 @@
 		<spring-data-redis.version>1.1.1.RELEASE</spring-data-redis.version>
 		<spring-data-rest.version>2.0.2.RELEASE</spring-data-rest.version>
 		<spring-hateoas.version>0.9.0.RELEASE</spring-hateoas.version>
+		<spring-plugin.version>1.0.0.RELEASE</spring-plugin.version>
 		<spring-rabbit.version>1.2.2.RELEASE</spring-rabbit.version>
 		<spring-mobile.version>1.1.1.RELEASE</spring-mobile.version>
 		<spring-security.version>3.2.3.RELEASE</spring-security.version>
@@ -542,6 +543,11 @@
 				<artifactId>spring-hateoas</artifactId>
 				<version>${spring-hateoas.version}</version>
 			</dependency>
+			<dependency>
+				<groupId>org.springframework.plugin</groupId>
+				<artifactId>spring-plugin-core</artifactId>
+				<version>${spring-plugin.version}</version>
+			</dependency>
 			<dependency>
 				<groupId>org.springframework.data</groupId>
 				<artifactId>spring-data-rest-webmvc</artifactId>