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Problems with java #GeneratedValue (strategy = GenerationType.IDENTITY) using MariaDB 10.4 and eclipselink

I am developing a REST web service in Java EE I am using: Glassfish 5.0 (build 25), MariaDB 10.4 and eclipselink (JPA 2.1)
here is my code:
commande_line table
CREATE TABLE IF NOT EXISTS `cooldb`.`commande_line` (
`id` INT NOT NULL AUTO_INCREMENT,
`quantity` INT NULL,
`discount` INT NULL,
`dish` INT NOT NULL,
`commande` INT NOT NULL,
PRIMARY KEY (`id`),
UNIQUE INDEX `id_UNIQUE` (`id` ASC),
INDEX `fk_commande_line_dish1_idx` (`dish` ASC),
INDEX `fk_commande_line_commande1_idx` (`commande` ASC),
CONSTRAINT `fk_commande_line_dish1`
FOREIGN KEY (`dish`)
REFERENCES `cooldb`.`dish` (`id`)
ON DELETE CASCADE
ON UPDATE CASCADE,
CONSTRAINT `fk_commande_line_commande1`
FOREIGN KEY (`commande`)
REFERENCES `cooldb`.`commande` (`id`)
ON DELETE CASCADE
ON UPDATE CASCADE)
ENGINE = InnoDB
DEFAULT CHARACTER SET = utf8;
persistance.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.2" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_2.xsd">
<!-- Define Persistence Unit -->
<persistence-unit name="my_persistence_unit" transaction-type="JTA">
<jta-data-source>jdbc/mariadb</jta-data-source>
<class>com.yac.model.Address</class>
<class>com.yac.model.Commande</class>
<class>com.yac.model.CommandeLine</class>
<class>com.yac.model.Dish</class>
<class>com.yac.model.Dishtype</class>
<class>com.yac.model.Ingredient</class>
<class>com.yac.model.Payement</class>
<class>com.yac.model.Profil</class>
<class>com.yac.model.Restaurant</class>
<class>com.yac.model.Userapp</class>
<exclude-unlisted-classes>true</exclude-unlisted-classes>
<properties>
</properties>
</persistence-unit>
</persistence>
commandeline entity
public class CommandeLine implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Basic(optional = false)
#Column(name = "id")
private Integer id;
#Column(name = "quantity")
private Integer quantity;
#Column(name = "discount")
private Integer discount;
#JoinColumn(name = "commande", referencedColumnName = "id")
#ManyToOne(optional = false)
private Commande commande;
#JoinColumn(name = "dish", referencedColumnName = "id")
#ManyToOne(optional = false)
private Dish dish;
//Constructor
// Setter and Getter
}
commandeline web service
#Stateless
#Path("commandeline")
public class CommandeLineFacadeREST extends AbstractFacade<CommandeLine> {
#PersistenceContext(unitName = "my_persistence_unit")
private EntityManager em;
public CommandeLineFacadeREST() {
super(CommandeLine.class);
}
#POST
#Override
#Consumes(MediaType.APPLICATION_JSON)
public void create(CommandeLine entity) {
super.create(entity);
}
#Override
protected EntityManager getEntityManager() {
return em;
}
}
AbstractFacade
public abstract class AbstractFacade<T> {
private Class<T> entityClass;
public AbstractFacade(Class<T> entityClass) {
this.entityClass = entityClass;
}
protected abstract EntityManager getEntityManager();
public void create(T entity) {
getEntityManager().persist(entity);
}
}
The problem is when I test my web service with Postman and I try to insert a record with a POST request
here is what I receive as error message:
Local Exception Stack:
Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.7.0.v20170811-d680af5): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: java.sql.SQLSyntaxErrorException: (conn=158) Table 'cooldb.sequence' doesn't exist
Error Code: 1146
Call: UPDATE SEQUENCE SET SEQ_COUNT = SEQ_COUNT + ? WHERE SEQ_NAME = ?
bind => [2 parameters bound]
Query: DataModifyQuery(name="SEQ_GEN_SEQUENCE" sql="UPDATE SEQUENCE SET SEQ_COUNT = SEQ_COUNT + ? WHERE SEQ_NAME = ?") ...
I don't understand why the problem with SEQUANCE when I use #GeneratedValue (strategy = GenerationType.IDENTITY).
When I change with #GeneratedValue (strategy = GenerationType.SEQUENCE) and I create the table with the following script:
CREATE SEQUENCE SEQUANCE START WITH 1 INCREMENT BY 1;
by applying the solution shown in : Table 'customerjpa.sequence' doesn't exist JPA
but the same probleme
thank you in advance for your help.

The problem is solved using Chris comments, i just add the following line in my persistence.xml file:
<property name="eclipselink.target-database" value="MySQL"/>
Thank you very much Chris.
So my new persistence.xml file is:
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.2" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_2.xsd">
<!-- Define Persistence Unit -->
<persistence-unit name="my_persistence_unit" transaction-type="JTA">
<jta-data-source>jdbc/mariadb</jta-data-source>
<class>com.yac.model.Address</class>
<class>com.yac.model.Commande</class>
<class>com.yac.model.CommandeLine</class>
<class>com.yac.model.Dish</class>
<class>com.yac.model.Dishtype</class>
<class>com.yac.model.Ingredient</class>
<class>com.yac.model.Payement</class>
<class>com.yac.model.Profil</class>
<class>com.yac.model.Restaurant</class>
<class>com.yac.model.Userapp</class>
<exclude-unlisted-classes>true</exclude-unlisted-classes>
<properties>
<property name="eclipselink.target-database" value="MySQL"/>
</properties>
</persistence-unit>
</persistence>
I just specified the database platform in MySQL in the persistence.xml file of the moment MariaDB is based on it, because MariaDB is not mentioned in the list.
If there are other suggestions do not hesitate thank you.

Another Solution:
Add ?useMysqlMetadata=true to your JDBC URL connection as bellow:
<property name="URL" value="jdbc:mariadb://[HOST]:[PORT]/[DB NAME]?useMysqlMetadata=true"/>
that will make MariaDB use MySQL meta data and then eclipselink will detect it as MySQL.

Hibernate 4.3.6 and Glassfish 4.0 JPA 2.1 object is not an instance of declaring class

I'm using Hibernate 4.3.6 and Glassfish 4.0 for my ejb project.
My test Dao class :
#PersistenceContext
private EntityManager entityManager;
public void saveTest(){
Foo testFoo = new Foo();
testFoo.setSomething("test");
entityManager.persist(testFoo);
entityManager.flush();
}
and POJO class Foo.class:
#Entity
#Table(name = "FOO")
public class Foo implements Serializable {
private static final long serialVersionUID = 1L;
private Long id;
private String something;
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
#Column(name = "T_ID", unique = true, nullable = false, precision = 15, scale = 0)
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
#Column(name = "T_SOMETHING", length = 50)
public String getSomething() {
return something;
}
public void setSomething(String something) {
this.adi = something;
}
}
persistence.xml :
<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://xmlns.jcp.org/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence
http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd"
version="2.1">
<persistence-unit name="TestAppUnit" transaction-type="JTA">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<jta-data-source>jdbc/TestApp</jta-data-source>
<class>com.example.test.Foo</class>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
<properties>
<property name="hibernate.transaction.jta.platform"
value="org.hibernate.service.jta.platform.internal.SunOneJtaPlatform" />
<property name="hibernate.dialect" value="org.hibernate.dialect.Oracle9iDialect" />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.format_sql" value="true" />
</properties>
</persistence-unit>
</persistence>
I can list table data, get data with query and i can remove data from table. But i can't persist or merge.
Exception is:
IllegalArgumentException occurred calling getter of com.example.test.Foo.id
at org.hibernate.property.BasicPropertyAccessor$BasicGetter.get(BasicPropertyAccessor.java:192)
at org.hibernate.tuple.entity.AbstractEntityTuplizer.getIdentifier(AbstractEntityTuplizer.java:346)
at org.hibernate.persister.entity.AbstractEntityPersister.getIdentifier(AbstractEntityPersister.java:4746)
at org.hibernate.persister.entity.AbstractEntityPersister.isTransient(AbstractEntityPersister.java:4465)
at org.hibernate.engine.internal.ForeignKeys.isTransient(ForeignKeys.java:243)
at org.hibernate.event.internal.AbstractSaveEventListener.getEntityState(AbstractSaveEventListener.java:511)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:100)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90)
at org.hibernate.internal.SessionImpl.fireSaveOrUpdate(SessionImpl.java:684)
at org.hibernate.internal.SessionImpl.saveOrUpdate(SessionImpl.java:676)
at org.hibernate.internal.SessionImpl.saveOrUpdate(SessionImpl.java:671)
....
Caused by: java.lang.IllegalArgumentException: object is not an instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.hibernate.property.BasicPropertyAccessor$BasicGetter.get(BasicPropertyAccessor.java:169)
Where am I doing wrong?
This project working on Glassfish 3.1 with persistence.xml version 1.0(jpa) and without this line :
<property name="hibernate.transaction.jta.platform"
value="org.hibernate.service.jta.platform.internal.SunOneJtaPlatform" />
Thanks in advance

I found it. Maybe others they encounter this problem. I wanted to share the solution.
The problem caused from Hibernate and "#PersistenceContext" annotation.
I change to Hibernate version to 4.3.5 and problem solved. Hibernate 4.3.6 and 4.3.7 has same problem. It's caused by different classloaders. Ejb Classloader and web app Classloader is different.

Entity Class is a non Entity?

I got the following Error:
[class model.VerkaufterArtikel] uses a non-entity [class model.Verkauf] as target entity in the relationship attribute [field verkauf].
But the class is listed in the persistence.xml. And I tried also to not exlude unlisted classes.
I'm using EclipseLink as JPA Implementation.
I tried to exlude the relation but then I was not able to persist Verkauf. The other classes are working correctly.
The situation is: I have a sale(Verkauf) wich contains sold items(VerkaufteArtikel).
model.Verkauf:
package model;
#Entity
#Table(name = "verkauf")
#NamedQuery(name = "Verkauf.findAll", query = "SELECT v FROM Verkauf v")
public class Verkauf implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private int id;
private int verkID;
private int gegeben;
#OneToMany(mappedBy="verkauf")
private List<VerkaufterArtikel> verkaufArtikels = new ArrayList<VerkaufterArtikel>();
model.VerkaufterArtikel:
#Entity
#Table(name="verkauf_artikel")
#NamedQuery(name="VerkaufArtikel.findAll", query="SELECT v FROM VerkaufterArtikel v")
public class VerkaufterArtikel implements Serializable {
private static final long serialVersionUID = 1L;
#Id
private int id;
private float anz;
private int artID;
private int preispro;
#ManyToOne
#JoinColumn(name="verkaufID")
private Verkauf verkauf;
My persistence XML:
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.1"
xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
<persistence-unit name="dbm" transaction-type="RESOURCE_LOCAL">
<!-- <exclude-unlisted-classes>false</exclude-unlisted-classes>-->
<class>model.Artikel</class>
<class>model.ArtikelInWarenkorb</class>
<class>model.VerkaufterArtikel</class>
<class>model.Verkaeufer</class>
<class>model.Verkauf</class>
<properties>
<property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/mdb" />
<property name="javax.persistence.jdbc.user" value="user" />
<property name="javax.persistence.jdbc.password" value="password" />
<property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver" />
<property name="eclipselink.allow-zero-id" value="true" />
</properties>
</persistence-unit>
</persistence>
And the Tables:
CREATE TABLE `verkauf_artikel` (
`id` INT(11) NOT NULL AUTO_INCREMENT,
`verkaufID` INT(11) NULL DEFAULT NULL,
`artID` INT(11) NULL DEFAULT NULL,
`anz` FLOAT NULL DEFAULT NULL,
`preispro` INT(11) NULL DEFAULT NULL,
PRIMARY KEY (`id`),
CREATE TABLE `verkauf` (
id` INT(11) NOT NULL AUTO_INCREMENT,
`verkID` INT(11) NULL DEFAULT '0',
`zeit` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
`gegeben` INT(11) NOT NULL DEFAULT '0',
PRIMARY KEY (`id`)
)
COLLATE='latin1_swedish_ci'
ENGINE=InnoDB;
Thank you!

I think your #ManyToOneMapping is not correct, it should look like this:
#ManyToOne
#JoinColumn(name="verkID")
private Verkauf verkauf;

I finally found the reason for this error.
I had a getSum() method at the bottom of the class. I removed the method and everything is working fine now!
public int getSum() {
return (int) getVerkaufArtikels()
.stream()
.mapToDouble(acc -> ((double) acc.getPreispro() * acc.getAnz()))
.sum();
}

cannot accept a NULL value on #ID #generatedvalue JPA entity

I am trying to make a add to wish list feature for my app but I keep getting this error:
Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: java.sql.SQLIntegrityConstraintViolationException: Column 'WISH_ID' cannot accept a NULL value.
Error Code: -1
Call: INSERT INTO WISHLIST (BOOK_TITLE, CUSTOMER_ID) VALUES (?, ?)
bind => [2 parameters bound]
Query: InsertObjectQuery(dukesbookstore.entity.Wishlist[ wishId=null ])
ENTITY class:
#Entity
#Table(name = "WISHLIST")
#XmlRootElement
#NamedQueries(
{
#NamedQuery(name = "Wishlist.findByCustomerId", query = "SELECT w FROM Wishlist w WHERE w.customerId = :customerId"),
})
public class Wishlist implements Serializable
{
private static final long serialVersionUID = 1L;
#Id #GeneratedValue(strategy=GenerationType.IDENTITY)
#Column(name = "WISH_ID")
private Integer wishId;
#Column(name = "CUSTOMER_ID")
private Integer customerId;
#Size(max = 35)
#Column(name = "BOOK_TITLE")
private String bookTitle;
public Wishlist()
{
}
public Integer getCustomerId()
{
return customerId;
}
public void setCustomerId(Integer customerId)
{
this.customerId = customerId;
}
public String getBookTitle()
{
return bookTitle;
}
public void setBookTitle(String bookTitle)
{
this.bookTitle = bookTitle;
}
}
and this is the code for creating a new wish:
public void createWishlist(String title,int cust_id)
{
Wishlist newWish = new Wishlist();
newWish.setBookTitle(title);
newWish.setCustomerId(cust_id);
em.persist(newWish);
}
I tried to look at other similar problems but they involves hibernate which i am not using. I have also tried various generation strategy such as AUTO,SEQUENCE,TABLE but all failed. I also have another entity named customer which is exactly same but it works fine though its created from a form.
Changing to AUTO generates this error:
Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: java.sql.SQLSyntaxErrorException: Table/View 'SEQUENCE' does not exist.
Error Code: -1
Call: UPDATE SEQUENCE SET SEQ_COUNT = SEQ_COUNT + ? WHERE SEQ_NAME = ?
bind => [2 parameters bound]
Query: DataModifyQuery(name="SEQUENCE" sql="UPDATE SEQUENCE SET SEQ_COUNT = SEQ_COUNT + ? WHERE SEQ_NAME = ?")
root cause
java.sql.SQLSyntaxErrorException: Table/View 'SEQUENCE' does not exist.
root cause
org.apache.derby.client.am.SqlException: Table/View 'SEQUENCE' does not exist.
Persistence.xml incase relevant
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" 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">
<persistence-unit name="myStorePU" transaction-type="JTA">
<jta-data-source>mydb</jta-data-source>
<class>myStore.entity.Book</class>
<class>myStore.entity.Customer</class>
<class>myStore.entity.Wishlist</class>
<properties>
<property name="javax.persistence.jdbc.user" value="APP"/>
<property name="javax.persistence.jdbc.password" value="APP"/>
<property name="eclipselink.logging.level" value="FINE"/>
</properties>
</persistence-unit>

Finally it is working now,
firstly, i had to delete the table that I created from netbeans db creation tool, which had a creation code like this, as seen by using "grab structure"
create table "APP".WISHLIST
(
WISH_ID NUMERIC(5) not null primary key,
CUSTOMER_ID NUMERIC(5),
BOOK_TITLE VARCHAR(100)
)
secondly, I added this code into my persistence.xml file
<property name="eclipselink.ddl-generation" value="create-tables"/>
This solved the problem as it created the table by it self, which have different creation code, as seen from its grab structure from auto creation:
create table "APP".WISHLIST
(
WISH_ID INTEGER default GENERATED_BY_DEFAULT not null primary key,
CUSTOMER_ID NUMERIC(5),
BOOK_TITLE VARCHAR(100)
)
So, basically should let netbeans create the table itself from entity but i was using "Create entity from table" features, for that i had to create the tables first in netbeans gui.
Thank you #Geziefer for all the help, I learned quite a bit from your help too.

This might be a "Non nullable attributes" in JPA single-table-inheritance problem. It might help and doesn't hurt to specify
#JoinTable(name = "[some join table name]",
joinColumns = {#JoinColumn(name = "[some ID column name]")},
inverseJoinColumns = {#JoinColumn(name = "[some different ID column name]")})

OpenJPA HSQLdb - how to handle IDs

I'm having trouble handling IDs of my databse tables using OpenJPA and HSQLdb. I created an Abstract class where I handle annotations and stuff to remap into the DB:
// Property accessors
#Id
#Column(name = "IDTESTOBJEKT", unique = true, nullable = false)
public Integer getIdtestobjekt() {
return this.idtestobjekt;
}
public void setIdtestobjekt(Integer idtestobjekt) {
this.idtestobjekt = idtestobjekt;
}
It's as a Facade used to create Testobjekts.
Testobjekt test_obj = new Testobjekt();
test_obj.setEigentuemerin("helge");
// test_obj.setIdtestobjekt(1);
EntityManagerHelper.beginTransaction();
TestobjektDAO test_dao = new TestobjektDAO();
test_dao.save(test_obj);
EntityManagerHelper.commit();
List<Testobjekt> foo;
foo = test_dao.findByEigentuemerin("helge");
Testobjekt from_db = foo.get(0);
System.out.println(from_db.getEigentuemerin());
Nevertheless what I set ... 1, nothing... I get errors.
Like:
Field "model_layer.AbstractTestobjekt.idtestobjekt" of "model_layer.Testobjekt#3209fa8f" can not be set to "null" value.
I want the ORM layer to handle that ID stuff without bothering me. My experience with Hibernate is that is handles that stuff quite well... but OpenJPA seems to be cumbersome here. I assume my annotations are wrong or something but I'm having trouble tracking this multi-layered issue down.
I configured OpenJPA in the persistence.xml:
<persistence-unit name="HSQLdb_mvn_openJPA_autoTablesPU"
transaction-type="RESOURCE_LOCAL">
<provider>
org.apache.openjpa.persistence.PersistenceProviderImpl
</provider>
<class>model_layer.Testobjekt</class>
<class>model_layer.AbstractTestobjekt</class>
<properties>
<property name="openjpa.ConnectionDriverName"
value="org.hsqldb.jdbc.JDBCDriver" />
<property name="openjpa.ConnectionURL"
value="jdbc:hsqldb:hsql://localhost:9001/mydb" />
<property name="openjpa.ConnectionUserName" value="SA" />
<property name="openjpa.jdbc.SynchronizeMappings"
value="buildSchema(ForeignKeys=true)" />
</properties>
</persistence-unit>
How do I handle an automated ID strategy with OpenJPA?
Thanks,
wishi

How do I handle an automated ID strategy with OpenJPA?
Use the #GeneratedValue annotation (and I suggest using the default GenerationType.AUTO strategy which indicates that the persistence provider should pick an appropriate strategy for the particular database):
#Id
#GeneratedValue
#Column(name = "IDTESTOBJEKT", unique = true, nullable = false)
public Integer getIdtestobjekt() {
return this.idtestobjekt;
}