I am trying to save an entity using Hibernate and Jersey.
The JSON that I try to send is:
{
"firstname":"Jon",
"middlename":"J",
"lastname":"Smith",
"dob":"10-10-1990",
"gender":"male"
}
When I send it with Postman, I get Status: 200 OK but the record is not saved in the database.
The database that I am using is Neo4j.
Here is my PersonDAO class:
package com.Neo4jRestAPI;
import java.util.List;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.EntityTransaction;
import javax.persistence.Persistence;
import org.hibernate.HibernateException;
import com.google.gson.Gson;
public class PersonDAO {
public void addPerson(Person person){
try {
EntityManagerFactory emf = Persistence.createEntityManagerFactory("persistence");
EntityManager em = emf.createEntityManager();
EntityTransaction tx = em.getTransaction();
tx.begin();
Person p = new Person();
p.setFirstname(person.getFirstname());
p.setMiddlename(person.getMiddlename());
p.setLastname(person.getLastname());
p.setDob(person.getDob());
p.setGender(person.getGender());
em.persist(p);
em.flush();
tx.commit();
em.clear();
em.close();
emf.close();
}
catch ( Exception e ) {
e.printStackTrace();
}
}
}
This is how I try to send the data:
@POST
@Path("/person")
@Consumes("application/json")
public Response addPerson(Person person){
person.setFirstname(person.getFirstname());
person.setMiddlename(person.getMiddlename());
person.setLastname(person.getLastname());
person.setDob(person.getDob());
person.setGender(person.getGender());
PersonDAO dao = new PersonDAO();
dao.addPerson(person);
return Response.ok().build();
}
Does anyone know what I am doing wrong here?
EDIT
I was able to save an entity using native query but that way, the id is not automatically generated. I am still unable to save an entity with the way described above
When I remove the @GeneratedValue and specify the id in the JSON, then I am able to save the entity, so I assume the problem is there. I have tried several strategies but none of them worked.
This is how I try to auto-generate the id:
@Entity
@Table(name="Person")
public class Person {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "id")
private Long id;
Also, when I print the method getId(), I get the auto-incremented value.
Here is the Cypher query that has been executed:
"{"statements":[{"statement":"CREATE (n:ENTITY:Person {props}) RETURN n","parameters":{"props":{"firstname":"Jon","gender":"male","dob":"10-10-1990","middlename":"J","id":99,"lastname":"Smith"}},"includeStats":false,"resultDataContents":["graph"]}]}"
I am also getting a transaction rollback error but it does not say why it has been rolled back:
"Neo.ClientError.Transaction.TransactionNotFound","message":"Unrecognized transaction id. Transaction may have timed out and been rolled back
Here is my persistence.xml file
<?xml version="1.0"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0">
<persistence-unit name="persistence">
<provider>org.hibernate.ogm.jpa.HibernateOgmPersistence</provider>
<properties>
<property name="hibernate.ogm.datastore.provider" value="neo4j_http"/>
<property name="hibernate.ogm.neo4j.database_path" value="C://path//to//database"/>
<property name="hibernate.ogm.datastore.host" value="localhost:7474"/>
<property name="hibernate.ogm.datastore.username" value="neo4j"/>
<property name="hibernate.ogm.datastore.password" value="root"/>
</properties>
</persistence-unit>
</persistence>
EDIT
This is the stack trace that I am getting:
log4j:WARN No appenders could be found for logger (org.jboss.logging).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
When I use log4j and add BasicConfiguratior.configure(), I get the following (it is quite big to post the whole log here, so I just posted a part of it where the error is thrown):
2342 [http-nio-8080-exec-4] DEBUG org.apache.http.wire - >> "{"statements":[{"statement":"CREATE (n:ENTITY:Person {props}) RETURN n","parameters":{"props":{"firstname":"Anna","gender":"female","dob":"10-10-1990","middlename":"J","id":57,"lastname":"Smith"}},"includeStats":false,"resultDataContents":["graph"]}]}"
2345 [http-nio-8080-exec-4] DEBUG org.apache.http.wire - << "HTTP/1.1 200 OK[\r][\n]"
2345 [http-nio-8080-exec-4] DEBUG org.apache.http.wire - << "Date: Tue, 03 Oct 2017 09:01:10 GMT[\r][\n]"
2345 [http-nio-8080-exec-4] DEBUG org.apache.http.wire - << "Content-Type: application/json[\r][\n]"
2345 [http-nio-8080-exec-4] DEBUG org.apache.http.wire - << "Access-Control-Allow-Origin: *[\r][\n]"
2345 [http-nio-8080-exec-4] DEBUG org.apache.http.wire - << "Content-Length: 372[\r][\n]"
2345 [http-nio-8080-exec-4] DEBUG org.apache.http.wire - << "Server: Jetty(9.2.z-SNAPSHOT)[\r][\n]"
2345 [http-nio-8080-exec-4] DEBUG org.apache.http.wire - << "[\r][\n]"
2345 [http-nio-8080-exec-4] DEBUG org.apache.http.impl.conn.DefaultClientConnection - Receiving response: HTTP/1.1 200 OK
2345 [http-nio-8080-exec-4] DEBUG org.apache.http.headers - << HTTP/1.1 200 OK
2345 [http-nio-8080-exec-4] DEBUG org.apache.http.headers - << Date: Tue, 03 Oct 2017 09:01:10 GMT
2345 [http-nio-8080-exec-4] DEBUG org.apache.http.headers - << Content-Type: application/json
2345 [http-nio-8080-exec-4] DEBUG org.apache.http.headers - << Access-Control-Allow-Origin: *
2345 [http-nio-8080-exec-4] DEBUG org.apache.http.headers - << Content-Length: 372
2345 [http-nio-8080-exec-4] DEBUG org.apache.http.headers - << Server: Jetty(9.2.z-SNAPSHOT)
2345 [http-nio-8080-exec-4] DEBUG org.apache.http.impl.client.DefaultHttpClient - Connection can be kept alive indefinitely
2346 [http-nio-8080-exec-4] DEBUG org.apache.http.wire - << "{"commit":"http://localhost:7474/db/data/transaction/53/commit","results":[{"columns":["n"],"data":[{"graph":{"nodes":[{"id":"10","labels":["ENTITY","Person"],"properties":{"firstname":"Anna","gender":"female","dob":"10-10-1990","middlename":"J","id":57,"lastname":"Smith"}}],"relationships":[]}}]}],"transaction":{"expires":"Tue, 03 Oct 2017 09:02:10 +0000"},"errors":[]}"
2346 [http-nio-8080-exec-4] DEBUG org.apache.http.impl.conn.PoolingClientConnectionManager - Connection [id: 1][route: {}->http://localhost:7474] can be kept alive indefinitely
2346 [http-nio-8080-exec-4] DEBUG org.apache.http.impl.conn.PoolingClientConnectionManager - Connection released: [id: 1][route: {}->http://localhost:7474][total kept alive: 1; route allocated: 2 of 10; total allocated: 2 of 10]
2350 [http-nio-8080-exec-4] DEBUG org.hibernate.engine.transaction.internal.TransactionImpl - committing
2350 [http-nio-8080-exec-4] DEBUG org.hibernate.event.internal.AbstractFlushingEventListener - Processing flush-time cascades
2350 [http-nio-8080-exec-4] DEBUG org.hibernate.event.internal.AbstractFlushingEventListener - Dirty checking collections
2350 [http-nio-8080-exec-4] DEBUG org.hibernate.event.internal.AbstractFlushingEventListener - Flushed: 0 insertions, 0 updates, 0 deletions to 1 objects
2350 [http-nio-8080-exec-4] DEBUG org.hibernate.event.internal.AbstractFlushingEventListener - Flushed: 0 (re)creations, 0 updates, 0 removals to 0 collections
2350 [http-nio-8080-exec-4] DEBUG org.hibernate.internal.util.EntityPrinter - Listing entities:
2350 [http-nio-8080-exec-4] DEBUG org.hibernate.internal.util.EntityPrinter - com.Neo4jRestAPI.Person{firstname=Anna, gender=female, relationship_type=null, dob=10-10-1990, middlename=J, id=57, relationship=null, lastname=Smith}
2350 [http-nio-8080-exec-4] DEBUG org.apache.http.impl.conn.PoolingClientConnectionManager - Connection request: [route: {}->http://localhost:7474][total kept alive: 1; route allocated: 2 of 10; total allocated: 2 of 10]
2350 [http-nio-8080-exec-4] DEBUG org.apache.http.impl.conn.PoolingClientConnectionManager - Connection leased: [id: 1][route: {}->http://localhost:7474][total kept alive: 0; route allocated: 2 of 10; total allocated: 2 of 10]
2350 [http-nio-8080-exec-4] DEBUG org.apache.http.impl.client.DefaultHttpClient - Stale connection check
2352 [http-nio-8080-exec-4] DEBUG org.apache.http.client.protocol.RequestAddCookies - CookieSpec selected: best-match
2352 [http-nio-8080-exec-4] DEBUG org.apache.http.client.protocol.RequestAuthCache - Auth cache not set in the context
2352 [http-nio-8080-exec-4] DEBUG org.apache.http.client.protocol.RequestProxyAuthentication - Proxy auth state: UNCHALLENGED
2352 [http-nio-8080-exec-4] DEBUG org.apache.http.impl.client.DefaultHttpClient - Attempt 1 to execute request
2352 [http-nio-8080-exec-4] DEBUG org.apache.http.impl.conn.DefaultClientConnection - Sending request: POST /db/data/transaction/54/commit HTTP/1.1
2352 [http-nio-8080-exec-4] DEBUG org.apache.http.wire - >> "POST /db/data/transaction/54/commit HTTP/1.1[\r][\n]"
2352 [http-nio-8080-exec-4] DEBUG org.apache.http.wire - >> "Accept: application/json[\r][\n]"
2352 [http-nio-8080-exec-4] DEBUG org.apache.http.wire - >> "Accept-Encoding: gzip, deflate[\r][\n]"
2352 [http-nio-8080-exec-4] DEBUG org.apache.http.wire - >> "Authorization: Basic bmVvNGo6Z2VuaXZpdHk=[\r][\n]"
2352 [http-nio-8080-exec-4] DEBUG org.apache.http.wire - >> "X-Stream: true[\r][\n]"
2352 [http-nio-8080-exec-4] DEBUG org.apache.http.wire - >> "Content-Length: 0[\r][\n]"
2352 [http-nio-8080-exec-4] DEBUG org.apache.http.wire - >> "Host: localhost:7474[\r][\n]"
2352 [http-nio-8080-exec-4] DEBUG org.apache.http.wire - >> "Connection: Keep-Alive[\r][\n]"
2352 [http-nio-8080-exec-4] DEBUG org.apache.http.wire - >> "[\r][\n]"
2352 [http-nio-8080-exec-4] DEBUG org.apache.http.headers - >> POST /db/data/transaction/54/commit HTTP/1.1
2352 [http-nio-8080-exec-4] DEBUG org.apache.http.headers - >> Accept: application/json
2352 [http-nio-8080-exec-4] DEBUG org.apache.http.headers - >> Accept-Encoding: gzip, deflate
2352 [http-nio-8080-exec-4] DEBUG org.apache.http.headers - >> Authorization: Basic bmVvNGo6Z2VuaXZpdHk=
2352 [http-nio-8080-exec-4] DEBUG org.apache.http.headers - >> X-Stream: true
2352 [http-nio-8080-exec-4] DEBUG org.apache.http.headers - >> Content-Length: 0
2352 [http-nio-8080-exec-4] DEBUG org.apache.http.headers - >> Host: localhost:7474
2352 [http-nio-8080-exec-4] DEBUG org.apache.http.headers - >> Connection: Keep-Alive
2354 [http-nio-8080-exec-4] DEBUG org.apache.http.wire - << "HTTP/1.1 404 Not Found[\r][\n]"
2354 [http-nio-8080-exec-4] DEBUG org.apache.http.wire - << "Date: Tue, 03 Oct 2017 09:01:10 GMT[\r][\n]"
2354 [http-nio-8080-exec-4] DEBUG org.apache.http.wire - << "Content-Type: application/json[\r][\n]"
2354 [http-nio-8080-exec-4] DEBUG org.apache.http.wire - << "Access-Control-Allow-Origin: *[\r][\n]"
2354 [http-nio-8080-exec-4] DEBUG org.apache.http.wire - << "Content-Length: 178[\r][\n]"
2354 [http-nio-8080-exec-4] DEBUG org.apache.http.wire - << "Server: Jetty(9.2.z-SNAPSHOT)[\r][\n]"
2354 [http-nio-8080-exec-4] DEBUG org.apache.http.wire - << "[\r][\n]"
2354 [http-nio-8080-exec-4] DEBUG org.apache.http.impl.conn.DefaultClientConnection - Receiving response: HTTP/1.1 404 Not Found
2354 [http-nio-8080-exec-4] DEBUG org.apache.http.headers - << HTTP/1.1 404 Not Found
2354 [http-nio-8080-exec-4] DEBUG org.apache.http.headers - << Date: Tue, 03 Oct 2017 09:01:10 GMT
2354 [http-nio-8080-exec-4] DEBUG org.apache.http.headers - << Content-Type: application/json
2354 [http-nio-8080-exec-4] DEBUG org.apache.http.headers - << Access-Control-Allow-Origin: *
2354 [http-nio-8080-exec-4] DEBUG org.apache.http.headers - << Content-Length: 178
2354 [http-nio-8080-exec-4] DEBUG org.apache.http.headers - << Server: Jetty(9.2.z-SNAPSHOT)
2354 [http-nio-8080-exec-4] DEBUG org.apache.http.impl.client.DefaultHttpClient - Connection can be kept alive indefinitely
2354 [http-nio-8080-exec-4] DEBUG org.apache.http.wire - << "{"results":[],"errors":[{"code":"Neo.ClientError.Transaction.TransactionNotFound","message":"Unrecognized transaction id. Transaction may have timed out and been rolled back."}]}"
2354 [http-nio-8080-exec-4] DEBUG org.apache.http.impl.conn.PoolingClientConnectionManager - Connection [id: 1][route: {}->http://localhost:7474] can be kept alive indefinitely
2354 [http-nio-8080-exec-4] DEBUG org.apache.http.impl.conn.PoolingClientConnectionManager - Connection released: [id: 1][route: {}->http://localhost:7474][total kept alive: 1; route allocated: 2 of 10; total allocated: 2 of 10]
2355 [http-nio-8080-exec-4] DEBUG org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl - Initiating JDBC connection release from afterTransaction
18718 [Finalizer] DEBUG org.apache.http.wire - << "{"password_change_required":false,"password_change":"http://localhost:7474/user/neo4j/password","username":"neo4j"}"
18719 [Finalizer] DEBUG org.apache.http.impl.conn.PoolingClientConnectionManager - Connection [id: 0][route: {}->http://localhost:7474] can be kept alive indefinitely
18719 [Finalizer] DEBUG org.apache.http.impl.conn.PoolingClientConnectionManager - Connection released: [id: 0][route: {}->http://localhost:7474][total kept alive: 2; route allocated: 2 of 10; total allocated: 2 of 10]
Also, another thing that I noticed is that when I send the JSON for the first time, I get the log like above after I send it for the second time, every line gets printed twice when I send it for the third time, every line gets printed 3 times, and so on...
I am not sure what is causing that but it might be the cause of the problem
I was able to solve my problem by changing from tomcat 8.5 to wildfly 9. I am still not sure what was the problem with tomcat though, since all the other operations worked fine, just the insertion of people was causing problems.