#73 - Added example how to customize all Spring Data repositories.

jpa/example/src/main/java/example/springdata/jpa/customall/BaseRepository.java

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+/*
+ * 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 example.springdata.jpa.customall;
+
+import org.springframework.data.repository.CrudRepository;
+import org.springframework.data.repository.NoRepositoryBean;
+
+/**
+ * A base repository interface declaring a custom method shared amongst all repositories.
+ * 
+ * @author Oliver Gierke
+ * @see ExtendedJpaRepository
+ * @soundtrack Tim Neuhaus - As life found you (The Cabinet)
+ */
+@NoRepositoryBean
+interface BaseRepository<T> extends CrudRepository<T, Long> {
+
+	long customMethod();
+}

jpa/example/src/main/java/example/springdata/jpa/customall/CustomRepositoryConfig.java

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+/*
+ * 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 example.springdata.jpa.customall;
+
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
+
+/**
+ * Sample configuration to bootstrap Spring Data JPA through JavaConfig. Note how Spring Data JPA is configured with a
+ * custom repository base class. This causes all repository interfaces being found for this configuration to use the
+ * configured class as base repository.
+ * 
+ * @author Oliver Gierke
+ * @soundtrack Tim Neuhaus - As life found you (The Cabinet)
+ */
+@Configuration
+@EnableAutoConfiguration
+@EnableJpaRepositories(repositoryBaseClass = ExtendedJpaRepository.class)
+class CustomRepositoryConfig {}

jpa/example/src/main/java/example/springdata/jpa/customall/ExtendedJpaRepository.java

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+/*
+ * 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 example.springdata.jpa.customall;
+
+import javax.persistence.EntityManager;
+
+import org.springframework.data.jpa.repository.support.JpaEntityInformation;
+import org.springframework.data.jpa.repository.support.SimpleJpaRepository;
+
+/**
+ * @author Oliver Gierke
+ * @soundtrack Elen - Nobody Else (Elen)
+ */
+class ExtendedJpaRepository<T> extends SimpleJpaRepository<T, Long> implements BaseRepository<T> {
+
+	/**
+	 * Creates a new {@link ExtendedJpaRepository} for the given {@link JpaEntityInformation} and {@link EntityManager}.
+	 * 
+	 * @param entityInformation must not be {@literal null}.
+	 * @param entityManager must not be {@literal null}.
+	 */
+	public ExtendedJpaRepository(JpaEntityInformation<T, ?> entityInformation, EntityManager entityManager) {
+		super(entityInformation, entityManager);
+	}
+
+	/* 
+	 * (non-Javadoc)
+	 * @see example.springdata.jpa.customall.BaseRepository#customMethod()
+	 */
+	@Override
+	public long customMethod() {
+		return 0;
+	}
+}

jpa/example/src/main/java/example/springdata/jpa/customall/User.java

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+/*
+ * 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 example.springdata.jpa.customall;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+
+/**
+ * Sample user class.
+ * 
+ * @author Oliver Gierke
+ * @soundtrack Tim Neuhaus - As life found you (The Cabinet)
+ */
+@Entity
+public class User {
+
+	private @Id @GeneratedValue Long id;
+}

jpa/example/src/main/java/example/springdata/jpa/customall/UserRepository.java

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+/*
+ * 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 example.springdata.jpa.customall;
+
+/**
+ * Repository interface for {@link User} instances.
+ * 
+ * @author Oliver Gierke
+ * @soundtrack Tim Neuhaus - As life found you (The Cabinet)
+ */
+public interface UserRepository extends BaseRepository<User> {}

jpa/example/src/test/java/example/springdata/jpa/customall/UserRepositoryCustomizationTests.java

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+/*
+ * 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 example.springdata.jpa.customall;
+
+import static org.hamcrest.CoreMatchers.*;
+import static org.junit.Assert.*;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.transaction.annotation.Transactional;
+
+/**
+ * Intergration test showing the usage of a custom method implemented for all repositories
+ * 
+ * @author Oliver Gierke
+ * @soundtrack Elen - It's you (Elen)
+ */
+@RunWith(SpringJUnit4ClassRunner.class)
+@Transactional
+@ContextConfiguration(classes = CustomRepositoryConfig.class)
+public class UserRepositoryCustomizationTests {
+
+	@Autowired UserRepository repository;
+
+	@Test
+	public void invokesCustomMethod() {
+		assertThat(repository.customMethod(), is(0L));
+	}
+}