DATACMNS-475 - Added configuration class to auto-register GeoModule.

Added a JavaConfig class to declare a Spring bean for the newly introduced GeoModule. 

@EnableSpringDataWebSupport automatically registers this config class in case Jackson is on the classpath. This comes in handy in combination with Spring Boot which auto-registers all global Module beans with all global ObjectMappers.

src/main/java/org/springframework/data/web/config/EnableSpringDataWebSupport.java

@@ -20,6 +20,8 @@ import java.lang.annotation.Inherited;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
+import java.util.ArrayList;
+import java.util.List;
 
 import org.springframework.context.annotation.Import;
 import org.springframework.context.annotation.ImportSelector;
@@ -80,6 +82,7 @@ public @interface EnableSpringDataWebSupport {
 
 		// Don't make final to allow test cases faking this to false
 		private static boolean HATEOAS_PRESENT = ClassUtils.isPresent("org.springframework.hateoas.Link", null);
+		private static boolean JACKSON_PRESENT = ClassUtils.isPresent("com.fasterxml.jackson.databind.ObjectMapper", null);
 
 		/* 
 		 * (non-Javadoc)
@@ -87,8 +90,17 @@ public @interface EnableSpringDataWebSupport {
 		 */
 		@Override
 		public String[] selectImports(AnnotationMetadata importingClassMetadata) {
-			return new String[] { HATEOAS_PRESENT ? HateoasAwareSpringDataWebConfiguration.class.getName()
-					: SpringDataWebConfiguration.class.getName() };
+
+			List<String> imports = new ArrayList<String>();
+
+			imports.add(HATEOAS_PRESENT ? HateoasAwareSpringDataWebConfiguration.class.getName()
+					: SpringDataWebConfiguration.class.getName());
+
+			if (JACKSON_PRESENT) {
+				imports.add(SpringDataJacksonConfiguration.class.getName());
+			}
+
+			return imports.toArray(new String[imports.size()]);
 		}
 	}
 }

src/main/java/org/springframework/data/web/config/SpringDataJacksonConfiguration.java

@@ -0,0 +1,34 @@
+/*
+ * Copyright 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.data.web.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.geo.GeoModule;
+
+/**
+ * JavaConfig class to export Jackson specific configuration.
+ * 
+ * @author Oliver Gierke
+ */
+@Configuration
+public class SpringDataJacksonConfiguration {
+
+	@Bean
+	public GeoModule jacksonGeoModule() {
+		return new GeoModule();
+	}
+}