Questions tagged [spring-data-jpa]

Spring Data - JPA is part of the Spring Data umbrella project which makes it easy to implement JPA based repositories

Spring Data JPA, part of the larger spring-data family, makes it easy to easily implement jpa based repositories. This module deals with enhanced support for jpa based data access layers. It makes it easier to build Spring-powered applications that use data access technologies.

spring-data is based on the concepts of Aggregates, Aggregate Roots and Repositories. It works best if these concepts are considered when you design your domain model. You might want to look into "Advancing Enterprise DDD" to learn what that actually means.

Please note that Spring Data doesn't try to abstract over the underlying technology. This means as a user you still have to understand it. In the case of Spring Data JPA this means you need to understand JPA in order to properly work with Spring Data JPA. This applies especially to the workings of the 1st level cache.

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Popular Questions

What is Spring Data JPA (good for)

Common questions

Are you supposed to have one repository per table in JPA?
Using generics in Spring Data JPA repositories
setMaxResults for Spring-Data-JPA annotation?
JPA Query to handle NULL parameter value and similarly How to query a column which value is null in JPA?
Controlling eager/lazy loading for queries: Hibernate Spring JPA load only specific lazy relationship
How to create a dynamic where clause as one needs for search dialogs for example: Dynamic spring data jpa repository query with arbitrary AND clauses.
Can't create custom query method in Spring Data Repository
Spring Boot, Spring Data JPA with multiple DataSources
Spring data jpa - How to combine multiple And and Or through method name
Spring Data JPA Update @Query not updating?

22458 questions

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1 answer

Filtering database rows with spring-data-jpa and spring-mvc

I have a spring-mvc project that is using spring-data-jpa for data access. I have a domain object called Travel which I want to allow the end-user to apply a number of filters to it. For that, I've implemented the following…

java spring spring-mvc spring-data spring-data-jpa

asked Nov 29 '13 at 07:45

Serafeim

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5 answers

Can't set JPA naming strategy after configuring multiple data sources (Spring 1.4.1 / Hibernate 5.x)

I am using Spring Boot 1.4.1 which uses Hibernate 5.0.11. Initially I configured a data source using application.properties like…

spring hibernate spring-boot spring-data-jpa

asked Nov 09 '16 at 14:30

Uncle Long Hair

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2 answers

Spring Boot Data JPA - Modifying update query - Refresh persistence context

I'm working with Spring Boot 1.3.0.M4 and a MySQL database. I have a problem when using modifying queries, the EntityManager contains outdated entities after the query has executed. Original JPA Repository: public interface EmailRepository extends…

spring hibernate spring-boot spring-data spring-data-jpa

asked Aug 27 '15 at 20:29

ciri-cuervo

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6 answers

JPQL Like Case Insensitive

I want to search data in User table by name case insensitive. @Repository public interface UserRepository extends JpaRepository { @Query("select u from User u where lower(u.name) like %lower(?1)%") public List…

java spring jpa spring-data-jpa jpql

asked May 12 '16 at 06:06

windupurnomo

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6 answers

How to set hibernate.format_sql in spring-boot?

I'm using spring-boot autoconfiguration for database injection, with properties defined: spring.jpa.database=POSTGRESQL spring.jpa.show-sql=true spring.jpa.hibernate.ddl-auto=update But how can I set the hibernate.format_sql=true? Is that not…

java spring spring-boot spring-data-jpa

asked Sep 08 '14 at 08:47

membersound

81,582
193
585
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4 answers

Spring Data JPA: query ManyToMany

I have entities User and Test @Entity public class User { private Long id; private String userName; } @Entity public class Test { private Long id; @ManyToMany private Set users; } I can get all tests by User…

java spring jpa spring-data spring-data-jpa

asked Oct 30 '15 at 14:35

qwe asd

1,598
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4 answers

Spring data jpa - How to combine multiple And and Or through method name

I am trying to migrate the application. I am working on from Hibernate to Spring Data Jpa. Though spring data jpa offers simple methods for query building, I am stuck up in creating query method that uses both And and Or operator. MethodName -…

java spring-data-jpa spring-data

asked Mar 04 '16 at 05:46

Preethi Ramanujam

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5 answers

Spring Data JPA - "could not initialize proxy - no Session" - With Methods marked as transactional

I have a model that has a pretty large graph of sub entities and hibernate ends up making around 9 statements to lazily fetch all of the data needed but about 4 levels deep I get a "could not initialize proxy - no Session" error and I am not sure…

java hibernate spring-boot spring-data-jpa c3p0

asked Apr 12 '16 at 20:13

douglasrlee

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2 answers

What is the difference between an Spring Entity Manager and Spring Data Repository?

I am using JPA in a website. After exploring about options for saving data, I found 2 approach. The first approach is using an implementation of javax.persistence.EntityManager. I used LocalContainerEntityManagerFactoryBean to instantiate an…

spring jpa spring-data spring-data-jpa

asked Jan 31 '13 at 08:36

zfranciscus

16,175
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3 answers

LocalDateTime to ZonedDateTime

I have Java 8 Spring web app that will support multiple regions. I need to make calendar events for a customer location. So let's say my web and Postgres server is hosted in MST timezone (but I guess it could be anywhere if we go cloud). But the…

java spring-data-jpa postgresql-9.3 java-time

asked Apr 05 '16 at 04:46

sonoerin

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1 answer

Are you supposed to have one repository per table in JPA?

Are you supposed to have one repository per table in JPA? If not, how do you resolve the generics in the repository database? For example, below is a StoreRepository. It handles CRUD operations on the Store object. If I wanted the repository to save…

java jpa spring-data-jpa spring-data

asked Jan 21 '14 at 17:37

user1099123

6,063
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11 answers

EntityNotFoundException in Hibernate Many To One mapping however data exist

I am getting javax.persistence.EntityNotFoundException error when I am trying to get User through Invoice object invoice.getUser().getId() Error is as follows javax.persistence.EntityNotFoundException: Unable to find com.indianretailshop.domain.User…

spring hibernate jpa spring-data-jpa

asked Nov 24 '12 at 06:50

Badal Singh

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6 answers

Spring Data JPA And NamedEntityGraphs

currently I am wrestling with being able to fetch only the data I need. The findAll() method needs to fetch data dependant on where its getting called. I do not want to end up writing different methods for each entity graph. Also, I would avoid…

jpa fetch spring-data-jpa entitygraph

asked Aug 11 '15 at 14:03

dendimiiii

1,659
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26

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4 answers

Spring Data JPA. How to get only a list of IDs from findAll() method

I have a very complicated model. Entity has a lot relationship and so on. I try to use Spring Data JPA and I prepared a repository. but when I invoke a method findAll() with specification for the object a have a performance issue because objects are…

spring spring-data-jpa specifications criteria-api

asked May 19 '15 at 17:00

tomasz-mer

3,753
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3 answers

org.hibernate.AnnotationException: No identifier specified for entity - even when it was

I have the following configuration:

spring hibernate spring-data spring-data-jpa

asked Mar 10 '13 at 08:33

checklist

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