added Javadoc comments for Spring Data JPA

src/main/java/org/springframework/samples/petclinic/repository/springdatajpa/JpaOwnerRepositoryImpl.java

+/*
+ * Copyright 2002-2013 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.samples.petclinic.repository.springdatajpa;
 
 import java.util.Collection;
@@ -12,7 +27,7 @@ import org.springframework.stereotype.Repository;
 import org.springframework.transaction.annotation.Transactional;
 
 /**
- * Using native JPA here because of this query:
+ * Using native JPA instead of Spring Data JPA here because of this query:
  * "SELECT owner FROM Owner owner left join fetch owner.pets WHERE owner.lastName LIKE :lastName"
  * See https://jira.springsource.org/browse/DATAJPA-292 for more details.
  *

src/main/java/org/springframework/samples/petclinic/repository/springdatajpa/SpringDataPetRepository.java

+/*
+ * Copyright 2002-2013 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.samples.petclinic.repository.springdatajpa;
 
 import java.util.List;
@@ -10,6 +25,7 @@ import org.springframework.samples.petclinic.model.PetType;
 import org.springframework.samples.petclinic.repository.PetRepository;
 
 /**
+ * Spring Data JPA specialization of the {@link PetRepository} interface
  *
  * @author Michael Isvy
  * @since 15.1.2013

src/main/java/org/springframework/samples/petclinic/repository/springdatajpa/SpringDataVetRepository.java

+/*
+ * Copyright 2002-2013 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.samples.petclinic.repository.springdatajpa;
 
 import org.springframework.data.repository.Repository;
@@ -5,6 +20,7 @@ import org.springframework.samples.petclinic.model.Vet;
 import org.springframework.samples.petclinic.repository.VetRepository;
 
 /**
+ * Spring Data JPA specialization of the {@link VetRepository} interface
  *
  * @author Michael Isvy
  * @since 15.1.2013

src/main/java/org/springframework/samples/petclinic/repository/springdatajpa/SpringDataVisitRepository.java

+/*
+ * Copyright 2002-2013 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.samples.petclinic.repository.springdatajpa;
 
 import org.springframework.data.repository.Repository;
 import org.springframework.samples.petclinic.model.Visit;
 import org.springframework.samples.petclinic.repository.VisitRepository;
-
+	
 /**
+ * Spring Data JPA specialization of the {@link VisitRepository} interface
  *
  * @author Michael Isvy
  * @since 15.1.2013