#131 - Added Spring Data Neo4j example.

Original pull requests: #129, #130.

neo4j/example/src/main/java/example/springdata/neo4j/domain/Actor.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.neo4j.domain;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import org.neo4j.ogm.annotation.GraphId;
+import org.neo4j.ogm.annotation.NodeEntity;
+import org.neo4j.ogm.annotation.Relationship;
+
+/**
+ * An Actor node entity.
+ *
+ * @author Luanne Misquitta
+ */
+@NodeEntity(label = "Actor")
+public class Actor {
+
+	@GraphId private Long id;
+	private String name;
+
+	@Relationship(type = "ACTED_IN")
+	private Set<Role> roles = new HashSet<>();
+
+	public Actor() {
+	}
+
+	public Actor(String name) {
+		this.name = name;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public Long getId() {
+		return id;
+	}
+
+	public Set<Role> getRoles() {
+		return roles;
+	}
+
+	public void actedIn(Movie movie, String roleName) {
+
+		Role role = new Role();
+		role.setRole(roleName);
+		role.setActor(this);
+		role.setMovie(movie);
+		roles.add(role);
+		movie.getRoles().add(role);
+	}
+}

neo4j/example/src/main/java/example/springdata/neo4j/domain/Movie.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.neo4j.domain;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import org.neo4j.ogm.annotation.GraphId;
+import org.neo4j.ogm.annotation.NodeEntity;
+import org.neo4j.ogm.annotation.Relationship;
+
+/**
+ * A Movie node entity.
+ *
+ * @author Luanne Misquitta
+ */
+@NodeEntity(label = "Movie")
+public class Movie {
+
+	@GraphId private Long id;
+	private String title;
+
+	@Relationship(type = "ACTED_IN", direction = "INCOMING")
+	private Set<Role> roles = new HashSet<>();
+
+	public Movie() {
+	}
+
+	public Movie(String title) {
+		this.title = title;
+	}
+
+	public String getTitle() {
+		return title;
+	}
+
+	public void setTitle(String title) {
+		this.title = title;
+	}
+
+	@Relationship(type = "ACTED_IN", direction = "INCOMING")
+	public Set<Role> getRoles() {
+		return roles;
+	}
+
+}

neo4j/example/src/main/java/example/springdata/neo4j/domain/Role.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.neo4j.domain;
+
+import org.neo4j.ogm.annotation.EndNode;
+import org.neo4j.ogm.annotation.GraphId;
+import org.neo4j.ogm.annotation.RelationshipEntity;
+import org.neo4j.ogm.annotation.StartNode;
+
+/**
+ * A Role relationship entity between an actor and movie.
+ * @author Luanne Misquitta
+ */
+@RelationshipEntity(type = "ACTED_IN")
+public class Role {
+
+	@GraphId 	private Long id;
+	@StartNode 	private Actor actor;
+	@EndNode 	private Movie movie;
+	private String role;
+
+	public Role() {
+	}
+
+	public Actor getActor() {
+		return actor;
+	}
+
+	public void setActor(Actor actor) {
+		this.actor = actor;
+	}
+
+	public Movie getMovie() {
+		return movie;
+	}
+
+	public void setMovie(Movie movie) {
+		this.movie = movie;
+	}
+
+	public String getRole() {
+		return role;
+	}
+
+	public void setRole(String role) {
+		this.role = role;
+	}
+}

neo4j/example/src/main/java/example/springdata/neo4j/repo/ActorRepository.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.neo4j.repo;
+
+import example.springdata.neo4j.domain.Actor;
+import org.springframework.data.neo4j.repository.GraphRepository;
+
+/**
+ * GraphRepository for Actors.
+ * @author Luanne Misquitta
+ */
+public interface ActorRepository extends GraphRepository<Actor> {
+
+}

neo4j/example/src/test/java/example/springdata/neo4j/ActorRepositoryIntegrationTest.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.neo4j;
+
+import static org.junit.Assert.*;
+
+import example.springdata.neo4j.domain.Actor;
+import example.springdata.neo4j.domain.Movie;
+import example.springdata.neo4j.domain.Role;
+import example.springdata.neo4j.repo.ActorRepository;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.annotation.DirtiesContext;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+/**
+ * Simple integration test demonstrating the use of the ActorRepository
+ * @author Luanne Misquitta
+ */
+@ContextConfiguration(classes = {ExampleConfig.class})
+@RunWith(SpringJUnit4ClassRunner.class)
+@DirtiesContext(classMode = DirtiesContext.ClassMode.AFTER_EACH_TEST_METHOD)
+public class ActorRepositoryIntegrationTest {
+
+	@Autowired ActorRepository actorRepository;
+
+	/**
+	 * @see DATAGRAPH-752
+	 * Test case to demonstrate saving node and relationship entities, and loading them via the repository.
+	 */
+	@Test
+	public void shouldBeAbleToSaveAndLoadActor() {
+
+		Actor daniel  = new Actor("Daniel Radcliffe");
+		Movie goblet = new Movie("Harry Potter and the Goblet of Fire");
+		daniel.actedIn(goblet,"Harry Potter");
+		actorRepository.save(daniel); //saves the actor and the movie
+
+
+		Actor actor = actorRepository.findOne(daniel.getId());
+		assertNotNull(actor);
+		assertEquals(daniel.getName(),actor.getName());
+		assertEquals(1,actor.getRoles().size());
+		Role role = actor.getRoles().iterator().next();
+		assertEquals("Harry Potter", role.getRole());
+	}
+
+}

neo4j/example/src/test/java/example/springdata/neo4j/ExampleConfig.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.neo4j;
+
+import org.neo4j.ogm.session.SessionFactory;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.neo4j.config.Neo4jConfiguration;
+import org.springframework.data.neo4j.repository.config.EnableNeo4jRepositories;
+import org.springframework.data.neo4j.server.InProcessServer;
+import org.springframework.data.neo4j.server.Neo4jServer;
+import org.springframework.transaction.annotation.EnableTransactionManagement;
+
+/**
+ * @author Luanne Misquitta
+ */
+@Configuration
+@EnableTransactionManagement
+@EnableNeo4jRepositories("example.springdata.neo4j.repo")
+public class ExampleConfig extends Neo4jConfiguration{
+
+	@Override
+	public Neo4jServer neo4jServer() {
+		return new InProcessServer();
+	}
+
+	@Override
+	public SessionFactory getSessionFactory() {
+		return new SessionFactory("example.springdata.neo4j.domain");
+	}
+}