Recent questions tagged JPA

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jpa - Cannot inject RESOURCE_LOCAL container managed EntityManager using @PersistenceContext

I am using JBoss AS 7.1.1 and able to configure a new JTA datasource and wire it to my EJB ... use RESOURCE_LOCAL PU with @PersistenceContext? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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889 views

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jpa - eclipselink connection pooling

If connection pooling is not defined in the persistence.xml for eclipse link, what is the default behavior? Will ... pool with some defaults? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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487 views

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jpa - Criteria API: Fetch of a list returns repeated main entity

I have the following Entities; Ticket contains a set of 0,N WorkOrder: @Entity public class Ticket { ... ... a fetch requires a DISTINCT command See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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643 views

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jpa - Why @OneToOne is allowing duplicate associations?

I have User and Address classes as follows: class User { ... ... @OneToOne( cascade=CascadeType.ALL) ... true" condition..right? -Siva See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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625 views

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jpa 2.0 - Subquery in From claus in JPA2 Criteria

I have a data model where an account can have multiple users: class Account { Long id; } class User { Long ... my query using JPA2 Criteria API? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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545 views

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jpa - Mapping value in junction table to Entity

I have a USER table and a COURSE table. A USER can have many COURSES, and a COURSE many USERS. The ... so the junction table is nonnegotiable. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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494 views

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jpa - Choosing between java.util.Date or java.sql.Date

Should I use java.util.Date or java.sql.Date? I have a VisualFox database and I have retrieved the ... many methods declared as deprecated. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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584 views

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jpa - Java Hibernate with Persistence Question---if FetchType is not defined, what is the default method?

I am new to Hibernate and JPA. I wrote some functions, initially, I set fetch = FetchType.LAZY in the ... { this.invoiceList = invoiceList; } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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893 views

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jpa 2.0 - Triggers versus JPA Event

I'm doing a Web application using Spring 3.1.0.RELEASE, JSF 2.x, JPA 2 with Hibernate Provider, MySql 5.1 ... and the MySql's triggers ? Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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jpa - org.hibernate.MappingException: Could not determine type for: java.util.Set, at table: USERS, for columns: [org.hibernate.mapping.Column(invoices)]

I have a problem that Hibernate is unable to determine the type for Set at the table USERS. I ... = invoiceItemsDetails; } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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425 views

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jpa with https request multithreading spring

I'm working with spring JPA and HTTP post request, fetching the data row by row then post the data ... findby and http post with multithreading See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.0k views

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jpa - How to filter child entities collections with predicate?

I have an entity service on which I need to filter a collection of child entity, based on a list of id's. My ... ! Thanks a lot for your help! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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585 views

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jpa - OpenJPA - lazy fetching does not work

I have a specific problem with an unit test using embedded OpenEJB container. I have a bi-directional relation ... externally via a getter. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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593 views

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jpa 2.0 - Does JPA have something like hibernates '@GenericGenerator' for generating custom ids?

I'm trying to create a custom way of computing and passing unique id's that follow my own pattern. Hibernate has ... 2 ? Thanks for your time. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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603 views

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jpa - JPQL, How to NOT select something

I have a pretty simple SQL I need to perform. I have a ProcessUser, Role and a ProcessUserRole table. A straight ... not in ( 'sysadmin' ) ) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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962 views

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jpa - @NamedQuery override findAll in Spring Data Rest JpaRepository

Is there a way to override the findAll query executed by Spring Data Rest? I need a way of filtering the results ... apply it to the result set. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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414 views

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jpa - Prevent Hibernate from deleting orphaned entities while merging an entity having entity associations with orphanRemoval set to true

Taking a very simple example of one-to-many relationship (country -> state). Country (inverse side) : ... () and EntityManager#find(). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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597 views

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jpa 2.0 - Many to Many hibernate inverse side ignored

Hi am reading the hibernate documentation. http://docs.jboss.org/hibernate/annotations/3.5/reference/en/html/entity ... does this mean? Example? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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729 views

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jpa - Bean Validation constraint(s) violated while executing Automatic Bean Validation on callback event:'prePersist'

I would like to store birthdate so I chose date at MySQL, when I create my entities based in my database, it turns out ... password + "]"); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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635 views

1 answer

jpa - Hibernate EntityManager: remove referenced entity not working

I'm currenetly trying hard to delete an entity, that is involved in various relations (Only @ManyToOne) - However ... unlinked entity - no luck. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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613 views

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jpa 2.0 - How to create a composite primary key which contains a @ManyToOne attribute as an @EmbeddedId in JPA?

I'm asking and answering my own question, but i'm not assuming i have the best answer. If you have a ... but is handled as an @EmbeddedId? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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540 views

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jpa - Does Guice Persist provide transaction scoped or application managed EntityManager?

We use Guice Persist to inject EntityManager in our project. E.g. public class MyDao{ @Inject EntityManager ... managed entity managers)? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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790 views

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jpa - Change default sort order for Spring Data findAll() method

I'm using Spring Data JPA and I wonder if it is possible to change the default sort order for a entity ... the Spring Data findAll() method? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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659 views

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jpa 2.0 - FetchMode in JPA 2 CriteriaQuery

I'm currently in the process of switching from Hibernate to pure JPA 2 (which by the way turned out to be much ... way to do this with JPA 2? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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528 views

1 answer

jpa - Eclipselink 2.5 Metamodel Generation using Maven

I would like to know how to generate static metamodels using Maven and Eclipselink 2.5. It worked fine by adding this ... there help me? =) B.R See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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515 views

1 answer

jpa - a new object was found through a relationship that was not marked cascade PERSIST

In trying to get a @OneToMany relationship between Article and HeaderField I probably have the mapping not quite ... trace what's happening. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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459 views

1 answer

jpa - EJB 3 or Hibernate 3

Regarding a Java EE Web application which is going to be served by a full Java EE Application server e.g. ... 3 or Hibernate 3 And why? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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843 views

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jpa - @Transient annotation, @org.springframework.data.annotation.Transient annotation, transient keyword and password storing

Currently I'm learning the Spring framework, mainly focusing on it's Security Module. I've watched some guides ... guidance and help in advance! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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