DATAJPA-775 - Improvements to Spring Data @Version detection.

Moved the detection of an invalidly used @Version to the verification phase of the JpaPersistentEntity so that the MappingContext doesn't even bootstrap if a misconfiguration is detected.

The previous approach would've detected the invalid stage at access time which might actually occur too late.

Original pull request: #153.

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

@@ -0,0 +1,49 @@
+/*
+ * Copyright 2015 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.mockito.Mockito.*;
+
+import java.util.Collections;
+
+import javax.persistence.metamodel.Metamodel;
+
+import org.junit.Test;
+import org.springframework.data.annotation.Version;
+
+/**
+ * Unit tests for {@link JpaMetamodelMappingContext}.
+ * 
+ * @author Oliver Gierke
+ */
+public class JpaMetamodelMappingContextUnitTests {
+
+	/**
+	 * @see DATAJPA-775
+	 */
+	@Test
+	public void jpaPersistentEntityRejectsSprignDataAtVersionAnnotation() {
+
+		Metamodel metamodel = mock(Metamodel.class);
+
+		JpaMetamodelMappingContext context = new JpaMetamodelMappingContext(Collections.singleton(metamodel));
+		context.getPersistentEntity(Sample.class);
+	}
+
+	static class Sample {
+		@Version Long version;
+	}
+}

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

@@ -158,15 +158,6 @@ public class JpaPersistentPropertyImplUnitTests {
 		assertThat(getProperty(JpaVersioned.class, "version").isVersionProperty(), is(true));
 	}
 
-	/**
-	 * @see DATAJPA-605
-	 * @see DATAJPA-775
-	 */
-	@Test(expected = IllegalArgumentException.class)
-	public void detectsSpringDataVersionAnnotation() {
-		getProperty(SpringDataVersioned.class, "version");
-	}
-
 	/**
 	 * @see DATAJPA-664
 	 */