Recent questions tagged hibernate

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hibernate - java.lang.NoClassDefFoundError: javax/validation/ParameterNameProvider

I write small hibernate application and get following stacktrace: org.hibernate.cfg.beanvalidation.IntegrationException: Error ... to fix it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hibernate - How to countDistinct on multiple columns

How can I, using the JPA criteria API do the following: select count(distinct column1, column2) from table Doing ... this on two paths/columns? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hibernate - JPA and PostgreSQL with GenerationType.IDENTITY

I have a question about Postgres and GenerationType.Identity vs Sequence In this example... @Id @SequenceGenerator( ... for the feedback. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hibernate - How should EntityManager be used in a nicely decoupled service layer and data access layer?

Somewhat related to my other question Should raw Hibernate annotated POJO's be returned from the Data Access Layer, or ... .); //etc } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hibernate - FetchMode Join vs SubSelect

I have two tables Employee and Department following are the entity classes for both of them Department.java @Entity ... opt in which scenario? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hibernate - get id after save object

Because of an purpose, I need to get an id of an object right after an insertion. I can work around with ... after inserting a bag of object? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hibernate - How to use Criteria Queries in Spring Boot Data Jpa Application

I have an application that uses Spring Boot Data jpa . So far i am using a repository like this public ... cases in a Spring Boot Application See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hibernate - How to use projections and specifications with spring data jpa?

I'm not able to use Spring Data JPA projections and specifications together. I have the following setup: Entity: ... be achieved? Any ideas? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hibernate - What does relationship owner means in bidirectional relationship?

I have a simple model with a Question and Choice object. ONE Question has MANY CHOICE(S). MANY ... difference between the two implementation? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hibernate - Why use only one SessionFactory Object per application?

Why use only one SessionFactory Object per application? What are the advantages of using single session factory object per application? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hibernate - java.lang.NumberFormatException: For input string in JSP Page

Hi can someone please help why this is giving an error when trying to display the values in a JSP page. I ... .lang.Thread.run(Thread.java:619) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hibernate - Spring Data JPA - Pass column name and value as parameters

I just wanted to know how to pass column name and its value to @Query annotation in Spring Data JPA. ... Any help would be appreciated. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hibernate - JPA Uppercase table names

I have a table in Postgresql: CREATE TABLE "UTILISATEUR"( "IdUtilisateur" serial NOT NULL, "Nom" character varying(50) ... > </plugins> </build> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hibernate - @OneToOne bidirectional mapping with @JoinColumn

Let's say I have Person class Person{ @Id Integer id; @OneToOne @JoinColumn(name = "person_id") Job myJob; } and ... . What mistake am I doing ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hibernate - How to make a database listener with java?

Greetings all I want to do something like a trigger or a listener (I don't know what) that will ... I am using Spring-Hibernate-PostgreSQL See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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736 views

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hibernate - Using HQL to query on a date while ignoring the time on Oracle

I have a table (in Oracle 9 and up) where I need to find all entries for a given day using Hibernate. ... timestamp would be the data type. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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542 views

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hibernate - Multiple data source and schema creation in Spring Boot

I'm using Spring Boot. I finally managed to setup two data sources, but now I'm facing another issue. with ... jpaTransactionManager; } } M.W. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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558 views

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hibernate - How to autogenerate created or modified timestamp field?

My entity class: @Entity @Table(name = "user") public class User implements Serializable { private static final long ... How do I achieve that? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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485 views

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hibernate - MySQL throws Incorrect string value error

I'm trying to store the following tweet into a longtext column / utf8 charset / MySQL 5.5. ... (Abstra ctReturningDelegate.java:57) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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643 views

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hibernate - How to retrieve the datasource used by a persistence unit programmatically

...without actually reading and parsing the persistence.xml I can retrieve the name of the persistence unit ... .getConnection().getCatalog(); See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

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hibernate - not-null property references a null or transient value

Facing trouble in saving parent/child object with hibernate. Any idea would be highly appreciated. org.hibernate. ... = invoice; } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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516 views

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hibernate - Does Java have a using statement?

Does Java have a using statement that can be used when opening a session in hibernate? In C# it is ... of scope and closes automatically. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hibernate - Cannot use identity column key generation with <union-subclass> ( TABLE_PER_CLASS )

com.something.SuperClass: @Entity @Inheritance(strategy = InheritanceType.TABLE_PER_CLASS) public abstract class SuperClass ... strategy. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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679 views

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hibernate - How to work with PGpoint for Geolocation using PostgreSQL?

I found a lot of answers that suggest to use spatial data with Hibernate spatial data geolocation but I want to ... Thanks! have a good day. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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813 views

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hibernate - How to simulate NVL in HQL

I tried this: from Table where (:par1 is null or col1 = :par1) but it happens that from Table where ... to run on different database engines See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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973 views

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hibernate - Convert list in entity to single string column in database

I have a VARCHAR field in my database, and the value of this field is val1,val2,val3. Is it possible ... entity using comma as split delimiter? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hibernate - When to Use EntityManager.clear()?

A custom JPA mapper class has a method: removeUser() 1. execute 'DELETE' HQL query to remove user 2. call ... on when to call clear()? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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603 views

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hibernate connection pool

I can't seem to get hibernate to use c3p0 for connection pooling, it says 12:30:35,038 INFO ... session-factory> </hibernate-configuration> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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