Spring-Boot: Failure on running of a spring-boot restful program - java

I'm newbie to spring-boot. I have written a very simple restful project to do CRUD actions on an entity and I use jpa and sql server. When I run it, it fails and the error is related to the database and the driver.
I have read almost all of the question related to this error and none of them was the answer.
Here's all information:
application.properties:
spring.datasource.driverClassName=com.microsoft.sqlserver.jdbc.SQLServerDriver
spring.jpa.hibernate.dialect=org.hibernate.dialect.SQLServer2012Dialect
spring.datasource.url=jdbc:sqlserver://localhost:1433;databaseName=restful;integratedSecurity=true
spring.datasource.initialize=true
spring.jpa.database=SQL_SERVER
spring.jpa.show-sql=true
spring.jpa.hibernate.ddl-auto = create-drop
spring.datasource.tomcat.max-wait=20000
spring.datasource.tomcat.max-active=50
spring.datasource.tomcat.max-idle=20
spring.datasource.tomcat.min-idle=15
pom.xml:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.myweb</groupId>
<artifactId>restful-api</artifactId>
<version>1.0-SNAPSHOT</version>
<name>restful-api</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
</properties>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.3.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>2.0.3.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-logging/commons-logging -->
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.microsoft.sqlserver/mssql-jdbc -->
<dependency>
<groupId>com.microsoft.sqlserver</groupId>
<artifactId>mssql-jdbc</artifactId>
<version>6.2.2.jre8</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-data-jpa -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
<version>2.0.3.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.tomcat/tomcat-jdbc -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
<plugins>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.0.0</version>
</plugin>
<!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging -->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.7.0</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.20.1</version>
</plugin>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.2</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
UserDaoImp.java:
#Repository
#Transactional
public class UserDaoImp implements UserDao {
#Autowired
private JdbcTemplate jt;
#Override
public List<User> getUsers() {
String query = "select all from Users";
RowMapper<User> rm = new UserRowMapper();
return jt.query(query, rm);
}
#Override
public User getUser(long id) {
String query = "select * from Users where Users.ID=?";
RowMapper<User> rm = new UserRowMapper();
return jt.queryForObject(query, rm, id);
}
#Override
public User getUser(String name, String lastName) {
String query = "select * from Users where Users.Name=? and Users.LastName=?";
RowMapper<User> rm = new UserRowMapper();
return jt.queryForObject(query, rm, name, lastName);
}
#Override
public void addUser(User user) {
if (!doesUserExist(user)) {
String query = "insert into Users values(?,?,?);";
jt.update(query, user.getName(), user.getLastName(), user.getId());
}
}
#Override
public void deleteUser(User user) {
String query = "Delete from Users where Users.id=? And Users.Name=? And Users.LastName=?";
jt.update(query, user.getId(), user.getName(), user.getLastName());
}
#Override
public void updateUser(User user) {
if (doesUserExist(user)) {
String query = "Update Users set Name=?, LastName=? where Users.Id=?";
jt.update(query, user.getName(), user.getLastName(), user.getId());
}
}
#Override
public boolean doesUserExist(User user) {
String query = "select * from Users where Users.Id=? And Users.Name=? And Users.LastName=?";
RowMapper<User> rm = new UserRowMapper();
User u = jt.queryForObject(query, rm, user.getId(), user.getName(), user.getLastName());
if (u == null) {
return false;
} else {
return true;
}
}
}
ServiceImp.java:
#org.springframework.stereotype.Service
public class ServiceImp implements Service {
#Autowired
private UserDaoImp udi;
#Override
public List<User> getUsers() {
return udi.getUsers();
}
#Override
public User getUser(long id) {
return udi.getUser(id);
}
#Override
public void addUser(User user) {
udi.addUser(user);
}
#Override
public void deleteUser(User user) {
udi.deleteUser(user);
}
#Override
public void update(User user) {
udi.updateUser(user);
}
}
Exception:
Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaConfiguration': Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method 'dataSource' threw exception; nested exception is org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException: Failed to determine a suitable driver class
at the end it says:
Description:
Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.
Reason: Failed to determine a suitable driver class
Action:
Consider the following:
If you want an embedded database (H2, HSQL or Derby), please put it on the classpath.
If you have database settings to be loaded from a particular profile you may need to activate it (no profiles are currently active).
Note: One thing That i can't figure out is that i have registered dependency for sql server driver in pom.xml, but the library doesn't exist in External Library.
Regards


Try this :
1) Right click on Project.
2) Maven -> Update Project
3) Refresh the project again.
Or try with other dependency
<!-- https://mvnrepository.com/artifact/com.microsoft.sqlserver/sqljdbc4 -->
<dependency>
<groupId>com.microsoft.sqlserver</groupId>
<artifactId>sqljdbc4</artifactId>
<version>4.0</version>
<scope>test</scope>
</dependency>
`

Related

import org.neo4j cannot be resolved?

I am very new to Neo4j and I'd like to get started with an embedded Neo4j in a Java Application. I try to run a HelloWorld Application as follows.
import org.neo4j.driver.AuthTokens;
import org.neo4j.driver.Driver;
import org.neo4j.driver.GraphDatabase;
import org.neo4j.driver.Session;
import org.neo4j.driver.Result;
import org.neo4j.driver.Transaction;
import org.neo4j.driver.TransactionWork;
import static org.neo4j.driver.Values.parameters;
public class HelloWorldExample implements AutoCloseable
{
private final Driver driver;
public HelloWorldExample( String uri, String user, String password )
{
driver = GraphDatabase.driver( uri, AuthTokens.basic( user, password ) );
}
#Override
public void close() throws Exception
{
driver.close();
}
public void printGreeting( final String message )
{
try ( Session session = driver.session() )
{
String greeting = session.writeTransaction( new TransactionWork<String>()
{
#Override
public String execute( Transaction tx )
{
Result result = tx.run( "CREATE (a:Greeting) " +
"SET a.message = $message " +
"RETURN a.message + ', from node ' + id(a)",
parameters( "message", message ) );
return result.single().get( 0 ).asString();
}
} );
System.out.println( greeting );
}
}
public static void main( String... args ) throws Exception
{
try ( HelloWorldExample greeter = new HelloWorldExample( "bolt://localhost:7687", "neo4j", "password" ) )
{
greeter.printGreeting( "hello, world" );
}
}
}
The Pom code is as follows.
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.neo4j.driver</groupId>
<artifactId>neo4j-java-driver</artifactId>
<version>4.0.1</version>
<name>neo4jtest</name>
<build>
<plugins>
<plugin>
<groupId>1</groupId>
<artifactId>2</artifactId>
<version>3.2</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
</plugins>
</build>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.neo4j</groupId>
<artifactId>neo4j-ogm-core</artifactId>
<version>3.1.2</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.neo4j</groupId>
<artifactId>neo4j-ogm-bolt-driver</artifactId>
<version>3.1.2</version>
<scope>runtime</scope>
</dependency>
</dependencies>
</dependencyManagement>
</project>
Unfortunately I cannot run the code it raises "Exception in thread "main" java.lang.Error: Unresolved compilation problem: at HelloWorldExample.main(HelloWorldExample.java:46)". Additionally, when hovering over the import lines I see "import org.neo4j cannot be resolved".
Can somebody provide information about this?

As documented, in order to use neo4j's Java driver, you need to specify the appropriate dependency:
<dependency>
<groupId>org.neo4j.driver</groupId>
<artifactId>neo4j-java-driver</artifactId>
<version>x.y.z</version>
</dependency>
The latest release version is 4.0.1.
[UPDATE]
Also, your pom.xml file has a lot of other issues. Try something like this instead:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.example</groupId>
<artifactId>helloworld</artifactId>
<version>1</version>
<name>neo4jtest</name>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<source>8</source>
<target>8</target>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>org.neo4j.driver</groupId>
<artifactId>neo4j-java-driver</artifactId>
<version>4.0.1</version>
</dependency>
</dependencies>
</project>
This example POM file uses some dummy groupId, artifactId, and version values for itself (near the top). You should replace them with your own values (not values belonging to neo4j).

"Exception in thread "mainHow to resolve this exception: " java.lang.NoClassDefFoundError: net/bytebuddy/NamingStrategy..."

I'm trying to connect a local database to my application using hibernate. I'm getting the following error:
Jul 02, 2019 9:20:08 PM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {[WORKING]}
Exception in thread "main" java.lang.NoClassDefFoundError: net/bytebuddy/NamingStrategy$SuffixingRandom$BaseNameResolver
at org.hibernate.orm.core#5.4.3.Final/org.hibernate.cfg.Environment.buildBytecodeProvider(Environment.java:345)
at org.hibernate.orm.core#5.4.3.Final/org.hibernate.cfg.Environment.buildBytecodeProvider(Environment.java:337)
at org.hibernate.orm.core#5.4.3.Final/org.hibernate.cfg.Environment.<clinit>(Environment.java:230)
at org.hibernate.orm.core#5.4.3.Final/org.hibernate.boot.registry.StandardServiceRegistryBuilder.<init>(StandardServiceRegistryBuilder.java:78)
at org.hibernate.orm.core#5.4.3.Final/org.hibernate.boot.registry.StandardServiceRegistryBuilder.<init>(StandardServiceRegistryBuilder.java:67)
at org.hibernate.orm.core#5.4.3.Final/org.hibernate.boot.registry.StandardServiceRegistryBuilder.<init>(StandardServiceRegistryBuilder.java:58)
at ProjectDBTest/ProjectDBTest2.HibernateUtil.getSessionFactory(HibernateUtil.java:28)
at ProjectDBTest/ProjectDBTest2.App.main(App.java:28)
Caused by: java.lang.ClassNotFoundException: net.bytebuddy.NamingStrategy$SuffixingRandom$BaseNameResolver
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:583)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
... 8 more
Any help on how to resolve this would be greatly appreciated.
Initially, I was getting 'java.lang.NoClassDefFoundError: java/sql/SQLException' exception and so I added 'requires java.sql' after seeing this as a suggested solution elsewhere on Stack Overflow, but now a the exception described above arises. I'm not sure where I'm gone wrong in my code or what is missing.
Here is my module-info.java file:
module ProjectDBTest {
requires java.persistence;
//requires lombok;
requires javafx.graphics;
requires org.hibernate.orm.core;
requires java.naming;
requires java.sql;
exports ProjectDBTest2.DB;
}
main class:
package ProjectDBTest2;
import ProjectDBTest2.DB.Vocabulary;
import org.hibernate.Session;
import org.hibernate.Transaction;
import java.util.List;
/**
* Hello world!
*
*/
public class App
{
public static void main( String[] args )
{
Vocabulary word1 = new Vocabulary();
word1.setUnitID(1);
word1.setWord("test");
word1.setVocabClass("noun");
word1.setVocabDefinition("this is a test");
word1.setVocabID(7);
System.out.println(word1.getUnitID());
Transaction transaction = null;
try (Session session = HibernateUtil.getSessionFactory().openSession()) {
transaction = session.beginTransaction();
session.save(word1);
transaction.commit();
} catch (Exception e) {
if (transaction != null) {
transaction.rollback();
}
e.printStackTrace();
}
try (Session session = HibernateUtil.getSessionFactory().openSession()) {
List< Vocabulary > students = session.createQuery("from Vocabulary ", Vocabulary.class).list();
students.forEach(s -> System.out.println(s.getWord()));
} catch (Exception e) {
if (transaction != null) {
transaction.rollback();
}
e.printStackTrace();
}
}
}
Hibernate util file:
package ProjectDBTest2;
import org.hibernate.SessionFactory;
import org.hibernate.boot.Metadata;
import org.hibernate.boot.MetadataSources;
import org.hibernate.boot.registry.StandardServiceRegistry;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
public class HibernateUtil {
private static StandardServiceRegistry registry;
private static SessionFactory sessionFactory;
public static SessionFactory getSessionFactory() {
if (sessionFactory == null) {
try {
// Create registry
registry = new StandardServiceRegistryBuilder().configure().build();
// Create MetadataSources
MetadataSources sources = new MetadataSources(registry);
// Create Metadata
Metadata metadata = sources.getMetadataBuilder().build();
// Create SessionFactory
sessionFactory = metadata.getSessionFactoryBuilder().build();
} catch (Exception e) {
e.printStackTrace();
if (registry != null) {
StandardServiceRegistryBuilder.destroy(registry);
}
}
}
return sessionFactory;
}
public static void shutdown() {
if (registry != null) {
StandardServiceRegistryBuilder.destroy(registry);
}
}
}
Persistence data class:
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
//#Data
#Entity
#Table(name = "vocabulary")
public class Vocabulary {
#Id
#Column(name = "V_ID")
private int vocabID;
#Column(name = "V_WORD")
private String word;
#Column(name = "V_CLASS")
private String vocabClass;
#Column(name = "V_DEFINITION")
private String vocabDefinition;
#Column(name = "U_ID")
private int unitID;
public int getVocabID() {
return vocabID;
}
public void setVocabID(int vocabID) {
this.vocabID = vocabID;
}
public String getWord() {
return word;
}
public void setWord(String word) {
this.word = word;
}
public String getVocabClass() {
return vocabClass;
}
public void setVocabClass(String vocabClass) {
this.vocabClass = vocabClass;
}
public String getVocabDefinition() {
return vocabDefinition;
}
public void setVocabDefinition(String vocabDefinition) {
this.vocabDefinition = vocabDefinition;
}
public int getUnitID() {
return unitID;
}
public void setUnitID(int unitID) {
this.unitID = unitID;
}
}
pom.xml:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>ProjectDBTest2</groupId>
<artifactId>ProjectDBTest2.0</artifactId>
<version>1.0-SNAPSHOT</version>
<name>ProjectDBTest2.0</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>11</maven.compiler.source>
<maven.compiler.target>11</maven.compiler.target>
</properties>
<dependencies>
<!-- https://mvnrepository.com/artifact/net.bytebuddy/byte-buddy -->
<dependency>
<groupId>net.bytebuddy</groupId>
<artifactId>byte-buddy</artifactId>
<version>1.9.13</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.16</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.4.3.Final</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.projectlombok/lombok-->
<!--
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.8</version>
<scope>provided</scope>
</dependency> -->
<dependency>
<groupId>org.mapstruct</groupId>
<artifactId>mapstruct-processor</artifactId>
<version>1.3.0.Final</version>
</dependency>
<dependency>
<groupId>org.openjfx</groupId>
<artifactId>javafx-graphics</artifactId>
<version>13-ea+9</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.openjfx/javafx -->
<dependency>
<groupId>org.openjfx</groupId>
<artifactId>javafx</artifactId>
<version>13-ea+9</version>
<type>pom</type>
</dependency>
<!-- https://mvnrepository.com/artifact/org.openjfx/javafx-base -->
<dependency>
<groupId>org.openjfx</groupId>
<artifactId>javafx-base</artifactId>
<version>13-ea+9</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.openjfx/javafx-controls -->
<dependency>
<groupId>org.openjfx</groupId>
<artifactId>javafx-controls</artifactId>
<version>13-ea+9</version>
</dependency>
</dependencies>
<build>
<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
<plugins>
<!-- clean lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle -->
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.1.0</version>
</plugin>
<!-- default lifecycle, jar packaging: see https://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging -->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.22.1</version>
</plugin>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.2</version>
</plugin>
<!-- site lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#site_Lifecycle -->
<plugin>
<artifactId>maven-site-plugin</artifactId>
<version>3.7.1</version>
</plugin>
<plugin>
<artifactId>maven-project-info-reports-plugin</artifactId>
<version>3.0.0</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
I'm using intelliJ ultimate 2019.1 and language level is set to 11.

I finally managed to solve the issue by updating my module-info.java file to include:
module AlienDB {
requires static lombok;
requires java.persistence;
requires org.hibernate.orm.core;
requires java.naming;
requires java.sql;
requires com.sun.xml.bind;
requires net.bytebuddy;
opens Aliens to org.hibernate.orm.core;
exports Aliens;
}
Previously I was adding java.xml.bind which was causing further issues.

Null Autowired Spring Bean (Cassandra Repository) in Service

I am getting a NullPointerException on an autowired bean in a service class. The class I'm trying to autowire is a Cassandra Repository.
My main class Application.java
#SpringBootApplication
#EnableAutoConfiguration
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
My Cassandra configuration CassandraConfig.java
#Configuration
#EnableCassandraRepositories(basePackages = "com.myretail")
public class CassandraConfig extends AbstractCassandraConfiguration {
#Override
protected String getKeyspaceName() {
return "myretail";
}
#Bean
public CassandraClusterFactoryBean cluster() {
CassandraClusterFactoryBean cluster =
new CassandraClusterFactoryBean();
cluster.setContactPoints("127.0.0.1");
cluster.setPort(9042);
return cluster;
}
#Bean
public CassandraMappingContext cassandraMapping()
throws ClassNotFoundException {
return new BasicCassandraMappingContext();
}
#Bean
public ProductService productService() {
return new ProductService();
}
}
My repository (dao) ProductPriceRepository.java
public interface ProductPriceRepository extends CassandraRepository<ProductPrice> {
#Query("select * from productprice where productId = ?0")
ProductPrice findByProductId(String productId);
}
My service class ProductService.java
#Path("/product")
#Component
public class ProductService {
#Autowired
ProductPriceRepository productPriceRepository;
#GET
#Path("/{id}")
#Produces(MediaType.APPLICATION_JSON)
public Product getTargetProduct(#PathParam("id") String productId) {
String urlString = "https://api.vendor.com/products/v3/" + productId + "?fields=descriptions&id_type=TCIN&key=43cJWpLjH8Z8oR18KdrZDBKAgLLQKJjz";
JSONObject json = null;
try {
json = new JSONObject(JsonReader.getExternalJsonResponse(urlString));
} catch (JSONException e) {
e.printStackTrace();
}
Product product = new Product();
product.setId(productId);
try {
JSONObject productCompositeResponse = json.getJSONObject("product_composite_response");
JSONArray items = productCompositeResponse.getJSONArray("items");
JSONObject item = items.getJSONObject(0);
JSONObject onlineDescription = item.getJSONObject("online_description");
product.setName(onlineDescription.getString("value"));
} catch (JSONException e) {
e.printStackTrace();
}
ProductPrice productPrice = productPriceRepository.findByProductId(productId);
product.setProductPrice(productPrice);
return product;
}
}
My pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.myretail</groupId>
<artifactId>MyRetail</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>MyRetail</name>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<dependency>
<groupId>com.datastax.cassandra</groupId>
<artifactId>cassandra-driver-core</artifactId>
<version>2.1.5</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-cassandra</artifactId>
<version>1.4.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.cassandraunit</groupId>
<artifactId>cassandra-unit-spring</artifactId>
<version>2.1.9.2</version>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.cassandraunit</groupId>
<artifactId>cassandra-unit</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.cassandraunit</groupId>
<artifactId>cassandra-unit-shaded</artifactId>
<version>2.1.9.2</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.hectorclient</groupId>
<artifactId>hector-core</artifactId>
<version>2.0-0</version>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-servlet</artifactId>
<version>1.18.3</version>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-json</artifactId>
<version>1.18.3</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.3.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-autoconfigure</artifactId>
<version>1.3.6.RELEASE</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.2</version>
<configuration>
<url>http://localhost:8080/manager/text</url>
<server>my-tomcat</server>
<path>/myRetail</path>
</configuration>
</plugin>
</plugins>
</build>
</project>
It is my understanding that the annotations should pick up the repository and create the bean based off of the #EnableCassandraRepositories annotation. The #Autowired ProductPriceRepository in ProductService.java is always null though when I run this on tomcat. HOWEVER, if I run a junit test against the service call, the bean is properly created, the object is not null, and the tests pass (via #ContextConfiguration annotation).
I've looked at a couple different patterns that I thought might help, but none of them have worked. I can't create an implementation of my interface because Cassandra handles that internally and I'm forced to implement the Cassandra methods.
I feel like something is just slightly off with the annotations somewhere. Any ideas?

The problem is with your pom.xml
For spring-boot Cassandra application, you have to include below dependencies and parent pom in pom.xml
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.3.5.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-cassandra</artifactId>
</dependency>
</dependencies>

neo4j in JEE (JBoss) environment:

I have built a RESTful web service for Wildfly using Neo4j OGM, but when I access it I get a NullPointerException.
It seems that a Map that should be populated with my model classes has not been initialized by the time it is accessed. Why is this happening?
Upfront I have to say that this module, salessupport-ui, is currently implemented as a fat client using javafx and it works fine connecting to the neo4j community edition 2.2.4, reading, writing, no problem.
What I would like to do now and this is where I face problems, I want to use wildfly as a server which itself connects to neo4j, thus that the javafx client application sends requests only to the wildfly server.
The protocol which I decided to use is REST, the implementation which is already kind-of provided on wildfly is resteasy.
Below are 1) the exception and some debugging info, 2) details about my context, project structure and the code for my classes.
1. Problem
Here are the exception and my findings when debugging.
Exception
Now when I call this REST service by entering http://localhost:8080/salessupport-restsvc/rest/address/list in the browser, the following exception is raised:
00:07:38,458 ERROR [io.undertow.request] (default task-5) UT005023: Exception handling request to /salessupport-restsvc/rest/address/list: org.jboss.resteasy.spi.UnhandledException: java.lang.NullPointerException
at org.jboss.resteasy.core.ExceptionHandler.handleApplicationException(ExceptionHandler.java:76)
at org.jboss.resteasy.core.ExceptionHandler.handleException(ExceptionHandler.java:212)
at org.jboss.resteasy.core.SynchronousDispatcher.writeException(SynchronousDispatcher.java:149)
at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:372)
at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:179)
at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:220)
at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56)
at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:86)
at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)
at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:58)
at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:72)
at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)
at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:282)
at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:261)
at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:80)
at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:172)
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:199)
at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:774)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
at org.neo4j.ogm.metadata.MetaData.entityType(MetaData.java:231)
at org.neo4j.ogm.session.Neo4jSession.entityType(Neo4jSession.java:451)
at org.neo4j.ogm.session.delegates.LoadByTypeDelegate.loadAll(LoadByTypeDelegate.java:55)
at org.neo4j.ogm.session.delegates.LoadByTypeDelegate.loadAll(LoadByTypeDelegate.java:94)
at org.neo4j.ogm.session.Neo4jSession.loadAll(Neo4jSession.java:114)
at groupid.salessupport.db.core.ApplicationContext$GraphRepositoryImpl.findAll(ApplicationContext.java:74)
at groupid.salessupport.restsvc.impl.SimpleRestGraphRepositoryImpl.findAll(SimpleRestGraphRepositoryImpl.java:29)
at groupid.salessupport.restsvc.impl.AddressRestImpl$Proxy$_$$_WeldClientProxy.findAll(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:137)
at org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:296)
at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:250)
at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:237)
at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:356)
... 32 more
Debugging info
By debugging I can see that it goes, as expected, to my first breakpoint in class SimpleRestGraphRepositoryImpl, method findAll() calling repository.findAll();
2nd also expected, it goes to the inner GraphRepositoryImpl class to method findAll(...) and line context.getSession().loadAll(clazz); which creates a Session.
A few steps later it tries in org.neo4j.ogm.metadata.MetaData class in method _classInfo(String,String,String) to call domainInfo.getClassInfosWithAnnotation(nodeEntityAnnotation); where nodeEntityAnnotation="org.neo4j.ogm.annotation.NodeEntity".
In the DomainInfo class method getClassInfosWithAnnotation which is then invoked the map annotationNameToClassInfo is empty. I expect it to be filled with my models, which obviously happens in the javafx environment, but not in the JavaEE env.
here is that method
public List<ClassInfo> getClassInfosWithAnnotation(String annotation) {
return annotationNameToClassInfo.get(annotation);
}
For checking, if the REST mechanism works as is I put a class next to the AddressRestImpl>
#Path("dummy")
public class DummyImpl {
#GET
#Path("list")
#Produces(MediaType.APPLICATION_JSON)
public List<Amount> getAll() {
return Arrays.asList(new Amount());
}
}
Calling this in the browser by navigating to http://localhost:8080/salessupport-restsvc/rest/dummy/list results in the expected: [{"amount":null,"currency":null}]
I have plenty of simple stuff to improve here, I have tried quite a lot of approaches, also on Tomcat 8 the same exception happens, but there the Rest approach did not work even in the dummy case so I switched to wildfly.
Did I find a bug here or is there something simply I have missed in my setup?
2) Project and Code Details
Here is information about my environment, project structure and the code I run when I have this problem.
Environment
My environment is as follows:
I have Neo4J community edition 2.2.4.
I downloaded wildfly-9.0.1.Final and, except for a management port which conflicted with my NVidia Driver Software I left everything untouched.
Project Structure
I have a maven multimodule application which consists of the following modules:
<modules>
<module>salessupport-ui</module>
<module>salessupport-intf</module>
<module>salessupport-db</module>
<module>salessupport-restsvc</module>
</modules>
The dependencies are as follows:
salessupport-intf <-- salessupport-db
^
|-- salessupport-ui
|-- salessupport-restsvc
Dependencies
Let me explain the dependencies:
salessupport parent has a dependency management definition like this:
<dependencyManagement>
<dependencies>
...
<dependency>
<groupId>org.neo4j</groupId>
<artifactId>neo4j-ogm</artifactId>
<version>1.1.2</version>
<exclusions>
<exclusion>
<groupId>org.neo4j.app</groupId>
<artifactId>neo4j-server</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
</dependencyManagement>
salessupport-intf uses the following dependencies:
<dependencies>
<dependency>
<groupId>org.neo4j</groupId>
<artifactId>neo4j-ogm</artifactId>
</dependency>
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>1.0.0.GA</version>
</dependency>
<dependency>
<groupId>javax.ws.rs</groupId>
<artifactId>jsr311-api</artifactId>
<version>1.1.1</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.12</version>
</dependency>
</dependencies>
salessupport-restsvc pom.xml is
<?xml version="1.0"?>
<project
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>groupid</groupId>
<artifactId>salessupport</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>salessupport-restsvc</artifactId>
<name>salessupport-restsvc</name>
<url>http://maven.apache.org</url>
<properties>
<jersey.version>1.19</jersey.version>
<resteasy.version>3.0.11.Final</resteasy.version>
</properties>
<dependencies>
<dependency>
<groupId>groupid</groupId>
<artifactId>salessupport-intf</artifactId>
</dependency>
<dependency>
<groupId>groupid</groupId>
<artifactId>salessupport-db</artifactId>
</dependency>
<dependency>
<groupId>javax.enterprise</groupId>
<artifactId>cdi-api</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-jaxrs</artifactId>
<version>${resteasy.version}</version>
<scope>provided</scope>
<exclusions>
<exclusion>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>jaxrs-api</artifactId>
<version>${resteasy.version}</version>
</dependency>
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-multipart-provider</artifactId>
<version>${resteasy.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
</dependency>
</dependencies>
<packaging>war</packaging>
<build>
<finalName>${project.artifactId}</finalName>
<plugins>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>${version.war.plugin}</version>
<configuration>
<!-- webXml>src\main\webapp\WEB-INF\web.xml</webXml -->
<failOnMissingWebXml>false</failOnMissingWebXml>
<packagingExcludes>
org.neo4j.server.rest.discovery,
org.neo4j.server.rest.web
</packagingExcludes>
</configuration>
</plugin>
</plugins>
</build>
</project>
Code
Here are the relevant classes.
GraphRepository interface
I defined my custom GraphRepository interface:
public interface GraphRepository<S> {
Iterable<S> findAll(Iterable<Long> nodeIds);
Iterable<S> findAll();
void delete(S arg0);
S save(S arg0);
}
Model Classes
There are some model classes, e.g.:
package groupid.salessupport.db.model;
import java.text.DecimalFormat;
import org.neo4j.ogm.annotation.GraphId;
import org.neo4j.ogm.annotation.NodeEntity;
#NodeEntity(label="Amount")
public class Amount {
#GraphId Long id;
private Double amount;
private Currency currency;
public Currency getCurrency() {
return currency;
}
public void setCurrency(Currency currency) {
this.currency = currency;
}
public Double getAmount() {
return amount;
}
public void setAmount(Double amount) {
this.amount = amount;
}
#Override
public String toString() {
return new DecimalFormat().format(amount)+" "+currency;
}
}
and
#NodeEntity(label="Currency")
public class Currency extends BaseObject {
#Override
public String toString() {
return getName();
}
}
Generic Simple Rest Graph Repository interface
public interface ISimpleRestGraphRepository<T> {
#DELETE
#Path("delete")
#Consumes(MediaType.APPLICATION_JSON)
public void delete(T arg0);
#PUT
#Path("save")
#Consumes(MediaType.APPLICATION_JSON)
#Produces(MediaType.APPLICATION_JSON)
public T save(T arg0);
#GET
#Path("list")
#Produces(MediaType.APPLICATION_JSON)
public Iterable<T> findAll();
#POST
#Path("listbyids")
#Consumes(MediaType.APPLICATION_JSON)
#Produces(MediaType.APPLICATION_JSON)
public Iterable<T> findAll(Iterable<Long> arg0);
}
REST Interface Definition for Amount
#Path("amount")
public interface AmountRest extends ISimpleRestGraphRepository<Amount> {
}
REST Activator
#ApplicationPath("/rest")
public class JaxRsActivator extends Application {
}
Generic implementation of my REST Service
#RequestScoped
public class SimpleRestGraphRepositoryImpl<T> implements ISimpleRestGraphRepository<T> {
private final GraphRepository<T> repository;
public SimpleRestGraphRepositoryImpl(GraphRepository<T> repository) {
this.repository = repository;
}
#Override
public void delete(T arg0) {
repository.delete(arg0);
}
#Override
public T save(T arg0) {
return repository.save(arg0);
}
#Override
public Iterable<T> findAll() {
return repository.findAll();
}
#Override
public Iterable<T> findAll(Iterable<Long> arg0) {
return repository.findAll(arg0);
}
}
... and the specific Implementation for Address:
public class AmountRestImpl extends SimpleRestGraphRepositoryImpl<Amount> implements AmountRest {
public AmountRestImpl() {
super(NeoRepositories.getInstance().getAmountRepository());
}
}
DB Connection
in salessupport-db we connect to the database with some code:
public class ApplicationContext {
private SessionFactory sessionFactory;
private Session openSession;
public ApplicationContext() {
}
public SessionFactory getSessionFactory() {
if (sessionFactory == null) {
sessionFactory = new SessionFactory("groupid.salessupport.db.model");
}
return sessionFactory;
}
public Session getSession() {
if (openSession == null) {
openSession = getSessionFactory().openSession("http://localhost:7474",
"username", "password"); // it is not really like this
}
return openSession;
}
public <S,G extends GraphRepository<S>> GraphRepository<S> getGraphRepository(Class<S> clazz) {
return new GraphRepositoryImpl<S>(this, clazz);
}
public static class GraphRepositoryImpl<S> implements GraphRepository<S> {
private ApplicationContext context;
private Class<S> clazz;
public GraphRepositoryImpl(ApplicationContext context, Class<S> clazz) {
this.context = context;
this.clazz = clazz;
}
#Override
public Iterable<S> findAll(Iterable<Long> nodeIds) {
List<Long> listNodeIds;
if (nodeIds instanceof List) {
listNodeIds = (List<Long>) nodeIds;
} else {
listNodeIds = new LinkedList<>();
for (Long l : nodeIds) {
listNodeIds.add(l);
}
}
return context.getSession().loadAll(clazz,listNodeIds);
}
#Override
public Iterable<S> findAll() {
return context.getSession().loadAll(clazz);
}
#Override
public void delete(S arg0) {
Session session = context.getSession();
Transaction transaction = session.beginTransaction();
context.getSession().delete(arg0);
transaction.commit();
transaction.close();
}
#Override
public S save(S arg0) {
Session session = context.getSession();
Transaction transaction = session.beginTransaction();
session.save(arg0);
transaction.commit();
transaction.close();
return arg0;
}
}
}
Usage
Implementors acquire an instance of this GraphRepository quick and dirty with a "singleton":
public class NeoRepositories {
private ApplicationContext context;
private static final NeoRepositories INSTANCE = new NeoRepositories();
private NeoRepositories() {
context = new ApplicationContext();
}
public GraphRepository<Person> getPersonRepository() {
return context.getGraphRepository(Person.class);
}
public static NeoRepositories getInstance() {
return INSTANCE;
}
public GraphRepository<Amount> getAmountRepository() {
return context.getGraphRepository(Amount.class);
}
...
}
P.S.: It is my first question on stackoverflow, I hope I wrote as little and as much as necessary to convey the problem ...

Is this #NodeEntity from Spring Data Neo4j? If yes, Spring must be setup correctly, which I cannot find here.

In https://github.com/neo4j/neo4j-ogm/issues/48 there has been an update, which has been implemented with neo4j-ogm version >2 .
I made the whole sourcecode available on https://github.com/mkirchmann/hello-neo4j-ogm , No guarantee that everything is working or all is correct, at least listing the whole nodes for one type should be possible. And don't forget to set up ogm.properties correctly.
The key for the solution is the vfs driver for neo4j-ogm, which can be found in https://github.com/mkirchmann/neo4j-ogm-resourceresolver-vfs (it has been forked from ctpconsulting, use version 2.1.1 and mvn install in order to make it available in your local maven repository)
pom.xml
The following pom.xml is setting up the necessary (maybe more, not sure), so that a Rest call can be made successfully.
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>de.neuenberger</groupId>
<artifactId>hello-neo4j-ogm</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>HelloNeo4jOgmOnWildFly</name>
<description>Very Simple configuration to use neo4j ogm on WildFly application server</description>
<packaging>war</packaging>
<properties>
<neo4jogmversion>2.1.1</neo4jogmversion>
<resteasy.version>3.1.1.Final</resteasy.version>
<version.war.plugin>3.0.0</version.war.plugin>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-jaxrs</artifactId>
<version>${resteasy.version}</version>
<scope>provided</scope>
<exclusions>
<exclusion>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-multipart-provider</artifactId>
<version>${resteasy.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.ctp.neo4j</groupId>
<artifactId>neo4j-ogm-resourceresolver-vfs</artifactId>
<version>2.1.1</version>
</dependency>
<dependency>
<groupId>javax.el</groupId>
<artifactId>javax.el-api</artifactId>
<version>2.2.4</version>
</dependency>
<dependency>
<groupId>org.neo4j</groupId>
<artifactId>neo4j-ogm-core</artifactId>
<version>${neo4jogmversion}</version>
</dependency>
<dependency>
<groupId>org.neo4j</groupId>
<artifactId>neo4j-ogm-http-driver</artifactId>
<version>${neo4jogmversion}</version>
</dependency>
<dependency>
<groupId>javax.enterprise</groupId>
<artifactId>cdi-api</artifactId>
<version>1.2</version>
</dependency>
</dependencies>
<build>
<finalName>${project.artifactId}</finalName>
<plugins>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>${version.war.plugin}</version>
<configuration>
<!-- webXml>src\main\webapp\WEB-INF\web.xml</webXml -->
<failOnMissingWebXml>false</failOnMissingWebXml>
<packagingExcludes>
org.neo4j.server.rest.discovery,
org.neo4j.server.rest.web
</packagingExcludes>
<archive>
<manifest>
<addClasspath>true</addClasspath>
</manifest>
</archive>
</configuration>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-releases</id>
<name>Spring Releases</name>
<url>https://repo.spring.io/libs-release</url>
</repository>
<repository>
<id>neo4j</id>
<name>Neo4j</name>
<url>http://m2.neo4j.org/</url>
</repository>
</repositories>
</project>
Thanks for everyones contribution and support!

NodeEntity attributes are NULL after transaction closed when using AspectJ

I've got a strange problem when using AspectJ, Neo4j NodeEntities and transactions.
I'm developing a spring application and using spring-data-neo4j with aspectj weaving. The problem is, that my fetched entities are empty outside of the transaction. Without AspectJ everything works as expected.
Here is a full test-case with maven:
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.test</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.2.4.RELEASE</version>
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.8</java.version>
<neo4j.version>2.1.7</neo4j.version>
<spring-data-commons.version>1.10.0.RELEASE</spring-data-commons.version>
<spring-data-neo4j.version>3.3.0.RELEASE</spring-data-neo4j.version>
</properties>
<dependencies>
<!-- spring dependencies -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-commons</artifactId>
<version>${spring-data-commons.version}</version>
</dependency>
<!-- spring + neo4j dependencies -->
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-neo4j</artifactId>
<version>${spring-data-neo4j.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-neo4j-tx</artifactId>
<version>${spring-data-neo4j.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-neo4j-aspects</artifactId>
<version>${spring-data-neo4j.version}</version>
</dependency>
<!-- for aspectj -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
</dependency>
<dependency>
<groupId>javax.persistence</groupId>
<artifactId>persistence-api</artifactId>
<version>1.0</version>
<optional>true</optional>
<scope>provided</scope>
</dependency>
<!-- for testing -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.neo4j</groupId>
<artifactId>neo4j-kernel</artifactId>
<version>${neo4j.version}</version>
<type>test-jar</type>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<profiles>
<profile>
<id>aspects</id>
<build>
<plugins>
<!-- disable default compiler -->
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<executions>
<execution>
<id>default-compile</id>
<phase>none</phase>
</execution>
</executions>
</plugin>
<!-- enable aspectj compiler -->
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>aspectj-maven-plugin</artifactId>
<version>1.7</version>
<dependencies>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>1.8.5</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjtools</artifactId>
<version>1.8.5</version>
</dependency>
</dependencies>
<executions>
<execution>
<goals>
<goal>compile</goal>
<goal>test-compile</goal>
</goals>
</execution>
</executions>
<configuration>
<outxml>true</outxml>
<aspectLibraries>
<aspectLibrary>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
</aspectLibrary>
<aspectLibrary>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-neo4j-aspects</artifactId>
</aspectLibrary>
</aspectLibraries>
<complianceLevel>${java.version}</complianceLevel>
<source>${java.version}</source>
<target>${java.version}</target>
</configuration>
</plugin>
</plugins>
</build>
</profile>
</profiles>
<repositories>
<repository>
<id>spring-libs-milestone</id>
<name>Spring Milestone</name>
<url>https://repo.spring.io/libs-milestone</url>
</repository>
</repositories>
</project>
demo/DemoNode.java
package demo;
import org.springframework.data.neo4j.annotation.GraphId;
import org.springframework.data.neo4j.annotation.Indexed;
import org.springframework.data.neo4j.annotation.NodeEntity;
#NodeEntity
public class DemoNode {
#GraphId
private Long id;
#Indexed(unique = true)
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
demo/DemoRepository.java
package demo;
import org.springframework.data.neo4j.repository.GraphRepository;
public interface DemoRepository extends GraphRepository<DemoNode> {
public DemoNode findByName(String name);
}
demo/DemoApplicationTests.java
package demo;
import static org.junit.Assert.assertEquals;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.neo4j.graphdb.GraphDatabaseService;
import org.neo4j.graphdb.Transaction;
import org.neo4j.test.TestGraphDatabaseFactory;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.support.AnnotationConfigContextLoader;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.neo4j.aspects.config.Neo4jAspectConfiguration;
import org.springframework.data.neo4j.config.EnableNeo4jRepositories;
import org.springframework.data.neo4j.support.node.Neo4jHelper;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.transaction.annotation.EnableTransactionManagement;
#RunWith(SpringJUnit4ClassRunner.class)
#ContextConfiguration(loader = AnnotationConfigContextLoader.class)
public class DemoApplicationTests {
#Configuration
#ComponentScan("demo")
#EnableTransactionManagement
#EnableNeo4jRepositories(basePackages = "demo")
public static class DemoConfiguration extends Neo4jAspectConfiguration {
public DemoConfiguration() {
setBasePackage("demo");
}
#Bean(destroyMethod = "shutdown")
public GraphDatabaseService graphDatabaseService() {
return new TestGraphDatabaseFactory().newImpermanentDatabase();
}
}
#Autowired
private GraphDatabaseService graphDbService;
#Autowired
private DemoRepository demoRepo;
#Before
public void resetDb() {
Neo4jHelper.cleanDb(graphDbService);
}
// NOT successful
#Test
public void testNeo4jTransaction() {
DemoNode node;
final String name = "demo";
try (Transaction tx = graphDbService.beginTx()) {
node = new DemoNode();
node.setName(name);
node = demoRepo.save(node);
tx.success();
}
assertEquals(name, node.getName());
try (Transaction tx = graphDbService.beginTx()) {
node = demoRepo.findByName(name);
tx.success();
}
assertEquals(name, node.getName()); // expected:<demo> but was:<null>
}
// successful
#Test
public void testNeo4jWithGetTransaction() {
DemoNode node;
final String name = "demo";
try (Transaction tx = graphDbService.beginTx()) {
node = new DemoNode();
node.setName(name);
node = demoRepo.save(node);
tx.success();
}
assertEquals(name, node.getName());
try (Transaction tx = graphDbService.beginTx()) {
node = demoRepo.findByName(name);
tx.success();
}
try (Transaction tx = graphDbService.beginTx()) {
assertEquals(name, node.getName());
}
}
}
When you test this with mvn test everything is fine. But when using aspectj (mvn test -Paspects) it will fail:
DemoApplicationTests.testNeo4jNativeTransaction:64 expected:<demo> but was:<null>
What I found out when debugging this: Inside the transaction with AspectJ I could retrieve the name with the getter. BUT: All properties are always null. So my guess is: AspectJ weaving stores the values somewhere else and overrides the setter/getter for this. The new getter requires an active transaction, so outside of the transaction it will not work/will use the default getter that doesn't work with the null properties.
When I'm increasing the debug level I could see some message regarding this:
DEBUG o.s.d.n.f.DetachedEntityState - Outside of transaction, GET value from field class java.lang.String name rel: false idx: true
Am I doing something wrong? Do I need to create a clone and return this? Imho this would be an ugly way ...
Thanks in advance! I'm already searched and tried multiple hours but couldn't find any solution and any other problems here on stackoverflow or somewhere else in the internet. Maybe it's a bug ... maybe expected behaviour or maybe I'm doing some wrong ... I don't know.
UPDATE
I added a second test that works. It has a transaction around the getter. So when the getter is called in a transaction everything is fine. But I think this is a curious behaviour. Outside of the transaction the entity should be detached, but usable.

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