#47, #60 - Added RelProvider implementation pluralizing using the Evo Inflector algorithm.

See http://www.csse.monash.edu.au/~damian/papers/HTML/Plurals.html for details of the algorithm.

Author: odrotbohm

pom.xml

@@ -66,6 +66,7 @@
 		<jsonpath.version>0.8.1</jsonpath.version>
 		<minidevjson.version>1.1.1</minidevjson.version>
 		<slf4j.version>1.7.2</slf4j.version>
+		<evo.version>1.0.1</evo.version>
 		<bundlor.failOnWarnings>true</bundlor.failOnWarnings>
 	</properties>
 
@@ -150,6 +151,13 @@
 			<version>${jsonpath.version}</version>
 			<optional>true</optional>
 		</dependency>
+		
+		<dependency>
+			<groupId>org.atteo</groupId>
+			<artifactId>evo-inflector</artifactId>
+			<version>${evo.version}</version>
+			<optional>true</optional>
+		</dependency>
 
 		<dependency>
 			<groupId>org.slf4j</groupId>

src/main/java/org/springframework/hateoas/config/HypermediaSupportBeanDefinitionRegistrar.java

@@ -41,6 +41,7 @@
 import org.springframework.hateoas.core.DefaultLinkDiscoverer;
 import org.springframework.hateoas.core.DefaultRelProvider;
 import org.springframework.hateoas.core.DelegatingRelProvider;
+import org.springframework.hateoas.core.EvoInflectorRelProvider;
 import org.springframework.hateoas.hal.HalLinkDiscoverer;
 import org.springframework.hateoas.hal.Jackson1HalModule;
 import org.springframework.hateoas.hal.Jackson2HalModule;
@@ -71,6 +72,7 @@ class HypermediaSupportBeanDefinitionRegistrar implements ImportBeanDefinitionRe
 	private static final boolean JACKSON2_PRESENT = ClassUtils.isPresent("com.fasterxml.jackson.databind.ObjectMapper",
 			null);
 	private static final boolean JSONPATH_PRESENT = ClassUtils.isPresent("com.jayway.jsonpath.JsonPath", null);
+	private static final boolean EVO_PRESENT = ClassUtils.isPresent("org.atteo.evo.inflector.English", null);
 
 	private final ImportBeanDefinitionRegistrar linkBuilderBeanDefinitionRegistrar = new LinkBuilderBeanDefinitionRegistrar();
 
@@ -114,7 +116,8 @@ public void registerBeanDefinitions(AnnotationMetadata importingClassMetadata, B
 	 */
 	private static void registerRelProviderPluginRegistryAndDelegate(BeanDefinitionRegistry registry) {
 
-		RootBeanDefinition defaultRelProviderBeanDefinition = new RootBeanDefinition(DefaultRelProvider.class);
+		Class<?> defaultRelProviderType = EVO_PRESENT ? EvoInflectorRelProvider.class : DefaultRelProvider.class;
+		RootBeanDefinition defaultRelProviderBeanDefinition = new RootBeanDefinition(defaultRelProviderType);
 		registry.registerBeanDefinition("defaultRelProvider", defaultRelProviderBeanDefinition);
 
 		RootBeanDefinition annotationRelProviderBeanDefinition = new RootBeanDefinition(AnnotationRelProvider.class);

src/main/java/org/springframework/hateoas/core/EvoInflectorRelProvider.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright 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 org.springframework.hateoas.core;
+
+import org.atteo.evo.inflector.English;
+import org.springframework.hateoas.RelProvider;
+
+/**
+ * {@link RelProvider} implementation using the Evo Inflector implementation of an algorithmic approach to English
+ * plurals.
+ * 
+ * @see http://www.csse.monash.edu.au/~damian/papers/HTML/Plurals.html
+ * @author Oliver Gierke
+ */
+public class EvoInflectorRelProvider extends DefaultRelProvider {
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.hateoas.core.DefaultRelProvider#getCollectionResourceRelFor(java.lang.Class)
+	 */
+	@Override
+	public String getCollectionResourceRelFor(Class<?> type) {
+		return English.plural(getSingleResourceRelFor(type));
+	}
+}

src/test/java/org/springframework/hateoas/core/EvoInflectorRelProviderUnitTest.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright 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 org.springframework.hateoas.core;
+
+import static org.hamcrest.CoreMatchers.*;
+import static org.junit.Assert.*;
+
+import org.junit.Test;
+import org.springframework.hateoas.RelProvider;
+
+/**
+ * Unit tests for {@link EvoInflectorRelProvider}.
+ * 
+ * @author Oliver Gierke
+ */
+public class EvoInflectorRelProviderUnitTest {
+
+	RelProvider provider = new EvoInflectorRelProvider();
+
+	@Test
+	public void buildsCollectionRelCorrectly() {
+		assertRels(City.class, "city", "cities");
+		assertRels(Person.class, "person", "persons");
+	}
+
+	private void assertRels(Class<?> type, String singleRel, String collectionRel) {
+		assertThat(provider.getSingleResourceRelFor(type), is(singleRel));
+		assertThat(provider.getCollectionResourceRelFor(type), is(collectionRel));
+	}
+
+	static class Person {
+
+	}
+
+	static class City {
+
+	}
+}

template.mf

@@ -10,5 +10,6 @@ Import-Template:
  javax.xml.bind.*;version="0",
  net.minidev.json.*;version="${minidevjson.version:[=.=.=,+1.0.0)}";resolution:=optional,
  org.aopalliance.*;version="[1.0.0,2.0.0)";resolution:=optional,
+ org.atteo.evo.inflector.*;version="${evo.version:[=.=.=,+1.0.0)}";resolution:=optional,
  org.springframework.*;version="${spring.version:[=.=.=,+1.0.0)}";resolution:=optional,
  org.codehaus.jackson.*;version="${jackson1.version:[=.=.=,+1.0.0)}";resolution:=optional