DATAJPA-274 - Introduce JPA Metamodel based MappingContext implementation.

Implemented rudimentary MappingContext to expose a JpaPersistentEntity through RepositoryFactoryInformation.

src/test/java/org/springframework/data/jpa/mapping/JpaMetamodelMappingContextIntegrationTests.java

@@ -0,0 +1,87 @@
+/*
+ * 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.springframework.data.jpa.mapping;
+
+import static org.hamcrest.CoreMatchers.*;
+import static org.junit.Assert.*;
+
+import javax.persistence.EntityManager;
+import javax.persistence.PersistenceContext;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.data.jpa.domain.sample.User;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+/**
+ * Integration tests for {@link JpaMetamodelMappingContext}.
+ * 
+ * @author Oliver Gierke
+ * @since 1.3
+ */
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration("classpath:infrastructure.xml")
+public class JpaMetamodelMappingContextIntegrationTests {
+
+	JpaMetamodelMappingContext context;
+
+	@PersistenceContext
+	EntityManager em;
+
+	@Before
+	public void setUp() {
+		context = new JpaMetamodelMappingContext(em.getMetamodel());
+	}
+
+	@Test
+	public void setsUpMappingContextCorrectly() {
+
+		JpaPersistentEntityImpl<?> entity = context.getPersistentEntity(User.class);
+		assertThat(entity, is(notNullValue()));
+	}
+
+	@Test
+	public void detectsIdProperty() {
+
+		JpaPersistentEntityImpl<?> entity = context.getPersistentEntity(User.class);
+		assertThat(entity.getIdProperty(), is(notNullValue()));
+	}
+
+	@Test
+	public void detectsAssociation() {
+
+		JpaPersistentEntityImpl<?> entity = context.getPersistentEntity(User.class);
+		assertThat(entity, is(notNullValue()));
+
+		JpaPersistentProperty property = entity.getPersistentProperty("manager");
+		assertThat(property.isAssociation(), is(true));
+	}
+
+	@Test
+	public void detectsPropertyIsEntity() {
+
+		JpaPersistentEntityImpl<?> entity = context.getPersistentEntity(User.class);
+		assertThat(entity, is(notNullValue()));
+
+		JpaPersistentProperty property = entity.getPersistentProperty("manager");
+		assertThat(property.isEntity(), is(true));
+
+		property = entity.getPersistentProperty("lastname");
+		assertThat(property.isEntity(), is(false));
+	}
+}

src/test/java/org/springframework/data/jpa/repository/support/JpaRepositoryFactoryBeanUnitTests.java

@@ -24,6 +24,7 @@ import java.util.HashMap;
 import java.util.Map;
 
 import javax.persistence.EntityManager;
+import javax.persistence.metamodel.Metamodel;
 
 import org.junit.Before;
 import org.junit.Test;
@@ -60,6 +61,8 @@ public class JpaRepositoryFactoryBeanUnitTests {
 	PersistenceExceptionTranslator translator;
 	@Mock
 	Repository<?, ?> repository;
+	@Mock
+	Metamodel metamodel;
 
 	@Before
 	@SuppressWarnings("unchecked")
@@ -70,6 +73,7 @@ public class JpaRepositoryFactoryBeanUnitTests {
 		when(beanFactory.getBeansOfType(eq(PersistenceExceptionTranslator.class), anyBoolean(), anyBoolean())).thenReturn(
 				beans);
 		when(factory.getRepository(any(Class.class), any(Object.class))).thenReturn(repository);
+		when(entityManager.getMetamodel()).thenReturn(metamodel);
 
 		// Setup standard factory configuration
 		factoryBean = new DummyJpaRepositoryFactoryBean<SimpleSampleRepository, User, Integer>();