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spring-projects#131 - Added Spring Data Neo4j example.
Original pull requests: spring-projects#129, spring-projects#130.
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‎README.md‎

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@@ -39,6 +39,10 @@ We have separate folders for the samples of individual modules:
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* `example` - Example how to use basic text search, geo-spatial search and facets.
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## Spring Data Neo4j
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* `example` - Example to show basic node and relationship entities and repository usage.
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## Spring Data web support
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* `web` - Example for Spring Data web integration (binding `Pageable` instances to Spring MVC controller methods, using interfaces to bind Spring MVCrequest payloads).

‎neo4j/example/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<artifactId>spring-data-neo4j-example</artifactId>
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<name>Spring Data Neo4j - Example</name>
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<properties>
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<spring-data-neo4j.version>4.0.0.BUILD-SNAPSHOT</spring-data-neo4j.version>
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<neo4j-ogm.version>1.1.2-SNAPSHOT</neo4j-ogm.version>
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<neo4j.version>2.2.4</neo4j.version>
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</properties>
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<parent>
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<groupId>org.springframework.data.examples</groupId>
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<artifactId>spring-data-neo4j-examples</artifactId>
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<version>1.0.0.BUILD-SNAPSHOT</version>
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<relativePath>../pom.xml</relativePath>
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</parent>
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<dependencies>
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<dependency>
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<groupId>org.springframework.data</groupId>
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<artifactId>spring-data-neo4j</artifactId>
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<version>${spring-data-neo4j.version}</version>
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</dependency>
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<dependency>
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<groupId>org.springframework.data</groupId>
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<artifactId>spring-data-neo4j</artifactId>
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<version>${spring-data-neo4j.version}</version>
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<type>test-jar</type>
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</dependency>
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<dependency>
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<groupId>org.neo4j</groupId>
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<artifactId>neo4j-ogm</artifactId>
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<version>${neo4j-ogm.version}</version>
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<type>test-jar</type>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.neo4j.app</groupId>
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<artifactId>neo4j-server</artifactId>
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<version>${neo4j.version}</version>
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</dependency>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>4.12</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.neo4j.test</groupId>
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<artifactId>neo4j-harness</artifactId>
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<version>${neo4j.version}</version>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<repositories>
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<repository>
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<id>spring-libs-snapshot</id>
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<name>Spring</name>
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<url>http://repo.spring.io/libs-snapshot</url>
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</repository>
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</repositories>
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</project>

‎neo4j/example/src/main/java/example/springdata/neo4j/domain/Actor.java‎

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/*
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* Copyright 2015 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package example.springdata.neo4j.domain;
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import java.util.HashSet;
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import java.util.Set;
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import org.neo4j.ogm.annotation.GraphId;
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import org.neo4j.ogm.annotation.NodeEntity;
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import org.neo4j.ogm.annotation.Relationship;
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/**
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* An Actor node entity.
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*
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* @author Luanne Misquitta
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*/
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@NodeEntity(label = "Actor")
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public class Actor {
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@GraphId private Long id;
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private String name;
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@Relationship(type = "ACTED_IN")
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private Set<Role> roles = new HashSet<>();
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public Actor() {
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}
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public Actor(String name) {
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this.name = name;
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}
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public String getName() {
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return name;
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}
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public Long getId() {
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return id;
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}
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public Set<Role> getRoles() {
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return roles;
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}
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public void actedIn(Movie movie, String roleName) {
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Role role = new Role();
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role.setRole(roleName);
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role.setActor(this);
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role.setMovie(movie);
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roles.add(role);
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movie.getRoles().add(role);
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}
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}

‎neo4j/example/src/main/java/example/springdata/neo4j/domain/Movie.java‎

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/*
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* Copyright 2015 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package example.springdata.neo4j.domain;
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import java.util.HashSet;
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import java.util.Set;
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import org.neo4j.ogm.annotation.GraphId;
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import org.neo4j.ogm.annotation.NodeEntity;
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import org.neo4j.ogm.annotation.Relationship;
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/**
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* A Movie node entity.
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*
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* @author Luanne Misquitta
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*/
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@NodeEntity(label = "Movie")
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public class Movie {
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@GraphId private Long id;
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private String title;
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@Relationship(type = "ACTED_IN", direction = "INCOMING")
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private Set<Role> roles = new HashSet<>();
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public Movie() {
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}
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public Movie(String title) {
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this.title = title;
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}
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public String getTitle() {
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return title;
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}
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public void setTitle(String title) {
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this.title = title;
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}
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@Relationship(type = "ACTED_IN", direction = "INCOMING")
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public Set<Role> getRoles() {
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return roles;
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}
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}

‎neo4j/example/src/main/java/example/springdata/neo4j/domain/Role.java‎

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/*
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* Copyright 2015 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package example.springdata.neo4j.domain;
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import org.neo4j.ogm.annotation.EndNode;
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import org.neo4j.ogm.annotation.GraphId;
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import org.neo4j.ogm.annotation.RelationshipEntity;
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import org.neo4j.ogm.annotation.StartNode;
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/**
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* A Role relationship entity between an actor and movie.
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* @author Luanne Misquitta
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*/
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@RelationshipEntity(type = "ACTED_IN")
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public class Role {
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@GraphId private Long id;
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@StartNode private Actor actor;
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@EndNode private Movie movie;
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private String role;
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public Role() {
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}
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public Actor getActor() {
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return actor;
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}
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public void setActor(Actor actor) {
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this.actor = actor;
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}
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public Movie getMovie() {
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return movie;
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}
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public void setMovie(Movie movie) {
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this.movie = movie;
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}
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public String getRole() {
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return role;
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}
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public void setRole(String role) {
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this.role = role;
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}
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}

‎neo4j/example/src/main/java/example/springdata/neo4j/repo/ActorRepository.java‎

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/*
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* Copyright 2015 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package example.springdata.neo4j.repo;
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import example.springdata.neo4j.domain.Actor;
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import org.springframework.data.neo4j.repository.GraphRepository;
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/**
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* GraphRepository for Actors.
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* @author Luanne Misquitta
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*/
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public interface ActorRepository extends GraphRepository<Actor> {
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}

‎neo4j/example/src/test/java/example/springdata/neo4j/ActorRepositoryIntegrationTest.java‎

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/*
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* Copyright 2015 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package example.springdata.neo4j;
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import static org.junit.Assert.*;
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import example.springdata.neo4j.domain.Actor;
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import example.springdata.neo4j.domain.Movie;
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import example.springdata.neo4j.domain.Role;
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import example.springdata.neo4j.repo.ActorRepository;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.test.annotation.DirtiesContext;
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import org.springframework.test.context.ContextConfiguration;
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import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
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/**
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* Simple integration test demonstrating the use of the ActorRepository
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* @author Luanne Misquitta
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*/
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@ContextConfiguration(classes = {ExampleConfig.class})
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@RunWith(SpringJUnit4ClassRunner.class)
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@DirtiesContext(classMode = DirtiesContext.ClassMode.AFTER_EACH_TEST_METHOD)
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public class ActorRepositoryIntegrationTest {
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@Autowired ActorRepository actorRepository;
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/**
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* @see DATAGRAPH-752
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* Test case to demonstrate saving node and relationship entities, and loading them via the repository.
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*/
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@Test
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public void shouldBeAbleToSaveAndLoadActor() {
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Actor daniel = new Actor("Daniel Radcliffe");
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Movie goblet = new Movie("Harry Potter and the Goblet of Fire");
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daniel.actedIn(goblet,"Harry Potter");
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actorRepository.save(daniel); //saves the actor and the movie
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Actor actor = actorRepository.findOne(daniel.getId());
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assertNotNull(actor);
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assertEquals(daniel.getName(),actor.getName());
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assertEquals(1,actor.getRoles().size());
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Role role = actor.getRoles().iterator().next();
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assertEquals("Harry Potter", role.getRole());
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}
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}

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