openjpa

Websphere can't find my Hibernate-managed EntityManager

别等时光非礼了梦想. 提交于 2019-12-06 13:09:42
I'm using Hibernate 3.4 on Websphere 7, with Spring 2.5.6 On startup, my application seems to have problems with Hibernate vs. OpenJPA: 10/02/12 10:41:50:448 GMT] 00000010 LocalEntityMa I org.springframework.orm.jpa.LocalEntityManagerFactoryBean createNativeEntityManagerFactory Building JPA EntityManagerFactory for persistence unit 'mypu' [10/02/12 10:41:50:495 GMT] 00000010 SystemErr R WARNING: Found unrecognized persistence provider "org.hibernate.ejb.HibernatePersistence" in place of OpenJPA provider. This provider's properties will not be used. ... and then a lovely stack trace caused by:

configure openjpa on to spring boot

北城余情 提交于 2019-12-06 12:24:13
Im trying to change the default JPA implementation of Hibernate to OpenJPA on Spring boot. Ive searched on google but there is not much on how to configure openJPA to Spring boot. Any advice would be helpful. Thanks @Configuration public class OpenJPAConfig extends JpaBaseConfiguration { protected OpenJPAConfig(DataSource dataSource, JpaProperties properties, ObjectProvider<JtaTransactionManager> jtaTransactionManager, ObjectProvider<TransactionManagerCustomizers> transactionManagerCustomizers) { super(dataSource, properties, jtaTransactionManager, transactionManagerCustomizers); } @Override

Primary Key (ID) not retrieved (?) from database using OpenJPA

自古美人都是妖i 提交于 2019-12-06 10:17:33
This is a simple program to write to and read from a mysql database. When I enter the test data, all of it is visible in the mySQL client. Yet, when I use OpenJPA to retrieve the same data, all the ids appear "0", but the names are correct. What might be the cause for IDs to get lost during the transaction? POJO Class import java.io.Serializable; import javax.persistence.*; @Entity (name="People") public class People implements Serializable{ /** * */ private static final long serialVersionUID = 801578124126646759L; @Id private int id; @Column(length=32) private String name; public People(int

JPA Not Eagerly Loading Everything

谁说胖子不能爱 提交于 2019-12-06 08:20:47
问题 I am having a problem leveraging JPA 1.0 via OpenJPA implementation. My data model consists of a Trip which has a OneToMany relationship with Leg and a OneToMany relationship with Passenger. Leg and Passenger have an assocation in PassengerLeg. This is mapped as bidirectional OneToMany/ManyToOne. So essentially I have a diamond in my data model. If a trip has 2 legs and 3 passengers, there will be 6 passengerLegs. For various use cases I have needs to go each direction from each entity. Right

I can't start jboss with a JPA issue

瘦欲@ 提交于 2019-12-06 06:39:05
I am migrating from WAS8.5.5 to JBoss EAP6.4. I got an error message as Caused by: org.jboss.modules.ModuleNotFoundException: openjpa:main I created directory as C:\Applications\jboss64\jboss-eap-6.4\modules\system\layers\base\org\apache\openjpa\main I put the openjpa-2.4.1.jar and serp-1.13.1.jar into it along with the module.xml. <?xml version="1.0" encoding="UTF-8"?> <module xmlns="urn:jboss:module:1.1" name="org.apache.openjpa"> <resources> <resource-root path="openjpa-2.4.1.jar"/> <resource-root path="serp-1.13.1.jar"/> <!-- Insert resources here --> </resources> <dependencies> <module

Does OpenJPA have any support for batch insert?

China☆狼群 提交于 2019-12-06 06:19:42
Does OpenJPA have any support for batch insert similar to Hibernate ? I haven't found it in the docs, but I'm hoping I missed it. I know JPA doesn't support it in general . Short answer, yes. Longer answer, take the link to Hibernate documentation and replace the Session with a JPA EntityManager. EntityManager em = emf.createEntityManager(); Transaction tx = em.getTransaction(); tx.begin(); for ( int i=0; i<100000; i++ ) { Customer customer = new Customer(.....); em.persist(customer); if ( i % 20 == 0 ) { //20, same as the JDBC batch size //flush a batch of inserts and release memory: em.flush

Exception regarding runtime optimization using openJPA MySQL

这一生的挚爱 提交于 2019-12-06 06:11:08
问题 There must be a bunch of questions regarding this, and I have read a few, but the answer still eludes me. I am new to JPA and I am just trying to test a simple application to see if I can configure the thing properly. It is a stand alone application meaning it will not be run with a web server or anything. The entity class looks like: @Entity public class Person{ @Id private String userID = null; @Transient private UserState userState = null; private String email = null; private String name =

The type of field isn't supported by declared persistence strategy “OneToMany”

我只是一个虾纸丫 提交于 2019-12-06 02:52:18
问题 We are new to JPA and trying to setup a very simple one to many relationship where a pojo called Message can have a list of integer group id's defined by a join table called GROUP_ASSOC . Here is the DDL: CREATE TABLE "APP"."MESSAGE" ( "MESSAGE_ID" INTEGER NOT NULL GENERATED ALWAYS AS IDENTITY (START WITH 1, INCREMENT BY 1) ); ALTER TABLE "APP"."MESSAGE" ADD CONSTRAINT "MESSAGE_PK" PRIMARY KEY ("MESSAGE_ID"); CREATE TABLE "APP"."GROUP_ASSOC" ( "GROUP_ID" INTEGER NOT NULL, "MESSAGE_ID" INTEGER

how to make openjpa 2.2.0 not persist foreign key

↘锁芯ラ 提交于 2019-12-06 02:47:54
I have two tables.. Asset table ASSET_ID SYSIBM INTEGER 4 0 No USER_ID SYSIBM INTEGER 4 0 No ASSET_TYPE_ID SYSIBM SMALLINT 2 0 No ACCESSIBILITY_ID SYSIBM SMALLINT 2 0 Yes DOWNLOAD_TYPE_ID SYSIBM SMALLINT 2 0 No ASSET_STATUS_ID SYSIBM SMALLINT 2 0 No ASSET_MARKETING_ID SYSIBM SMALLINT 2 0 Yes ASSET_PI_SPI_ID SYSIBM SMALLINT 2 0 Yes and the Accesibility table ACCESSIBILITY_ID SYSIBM SMALLINT 2 0 No ACCESSIBILITY_DESC SYSIBM VARCHAR 50 0 No i have two beans, Asset Bean @Column(name="ASSET_ID") @GeneratedValue(strategy=GenerationType.IDENTITY) private int assetId; @Column(name="DATE_CREATED")

How to deal with locks (JPA)?

ε祈祈猫儿з 提交于 2019-12-05 23:28:04
问题 According to the Java Persistent/Locking wikibooks*, the best way to deal with locks is to report the Optimistic Lock Error/Exception to the user. The problem is that it's not scalable. Suppose that I have many users who are likely to cause a lock with the same action. The user does not care about the lock error message. In a nutshell : The best way is to disable all locks ? The best way is to report to the user the error lock message ? But the user must retry his action until it will work !