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We're now able to use Spring Data there

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see: https://jira.springsource.org/browse/DATAJPA-292
This commit is contained in:
Mic 2013-04-18 10:10:16 +08:00
parent 16e3e4be6d
commit 993257f5a8
5 changed files with 42 additions and 97 deletions
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70
src/main/java/org/springframework/samples/petclinic/repository/springdatajpa/JpaOwnerRepositoryImpl.java
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@ -1,70 +0,0 @@
/*
* 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;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;
import org.springframework.samples.petclinic.model.Owner;
import org.springframework.samples.petclinic.repository.OwnerRepository;
import org.springframework.stereotype.Repository;
/**
* 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.
* This issue has been fixed already in the latest Spring Data JPA Snapshot. So we will wait for the next version of Spring
* Data JPA to be available and update the Spring Petclinic application consequently.
*
* @author Michael Isvy
*/
@Repository
public class JpaOwnerRepositoryImpl implements OwnerRepository {
@PersistenceContext
private EntityManager em;
@Override
@SuppressWarnings("unchecked")
public Collection<Owner> findByLastName(String lastName) {
// using 'join fetch' because a single query should load both owners and pets
// using 'left join fetch' because it might happen that an owner does not have pets yet
Query query = this.em.createQuery("SELECT DISTINCT owner FROM Owner owner left join fetch owner.pets WHERE owner.lastName LIKE :lastName");
query.setParameter("lastName", lastName + "%");
return query.getResultList();
}
@Override
public Owner findById(int id) {
// using 'join fetch' because a single query should load both owners and pets
// using 'left join fetch' because it might happen that an owner does not have pets yet
Query query = this.em.createQuery("SELECT owner FROM Owner owner left join fetch owner.pets WHERE owner.id =:id");
query.setParameter("id", id);
return (Owner) query.getSingleResult();
}
@Override
public void save(Owner owner) {
this.em.merge(owner);
}
}

41
src/main/java/org/springframework/samples/petclinic/repository/springdatajpa/SpringDataOwnerRepository.java Normal file
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/*
* 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;
import org.springframework.data.jpa.repository.Query;
import org.springframework.data.repository.Repository;
import org.springframework.data.repository.query.Param;
import org.springframework.samples.petclinic.model.Owner;
import org.springframework.samples.petclinic.repository.OwnerRepository;
/**
* Spring Data JPA specialization of the {@link OwnerRepository} interface
*
* @author Michael Isvy
* @since 15.1.2013
*/
public interface SpringDataOwnerRepository extends OwnerRepository, Repository<Owner, Integer> {
@Override
@Query("SELECT DISTINCT owner FROM Owner owner left join fetch owner.pets WHERE owner.lastName LIKE :lastName%")
public Collection<Owner> findByLastName(@Param("lastName") String lastName);
@Override
@Query("SELECT owner FROM Owner owner left join fetch owner.pets WHERE owner.id =:id")
public Owner findById(@Param("id") int id);
}