Spring Data JPA
JDBI
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Spring Data JPA | JDBI | |
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21 | 27 | |
2,893 | 1,899 | |
1.4% | 0.8% | |
9.1 | 9.5 | |
2 days ago | 9 days ago | |
Java | Java | |
Apache License 2.0 | Apache 2.0 license |
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Spring Data JPA
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How to Store Spring Boot Application Metrics in InfluxDB
Please note: The H2 database was chosen for simplicity. You can replace it with any other database technology and use the Spring Boot JPA to connect. The demo application will still work.
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How to write a native query in spring boot jpa(postgres) which has "where in" check on composite columns?
What you are trying to do is not supported in JPA/JPQL or Spring Data (see here) Not even all databases support that syntax as far as I'm aware. You either need to concat the columns or add functionality to do this yourself, perhaps a Hibernate UserType will work.
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What does @Transactional keep you from needing to call .save()?
There was also a discussion in the Spring Data JPA project repo surrounding the documentation as well: https://github.com/spring-projects/spring-data-jpa/issues/2055
- Multiple Datasources in an application
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The best way to use Spring Data query methods
There is a small typo on the second issue, I have tried opening a PR myself to fix it https://github.com/spring-projects/spring-data-jpa/pull/2869. I hope i haven't messed up something lol.
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Build a Simple CRUD App with Spring Boot and Vue.js
data-jpa: Spring Data JPA, makes it easy to create JPA-based repositories
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Spring Boot GraphQL API example
This repository is an example application for the Spring Boot framework that employs the Netflix DGS framework to expose a GraphQL API and that interacts with a PostgreSQL DBMS via Spring Data JPA.
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Spring Boot – Black Box Testing
I'm using Spring Data JPA as a persistence framework. Therefore, those classes are Hibernate entities.
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QueryDSL and/or CriteriaAPI with multi-Joins on properties to Sort, Filter and Paging not working
By two different former developers, one from QueryDSL and the other RSQL JPA Spec (Criteria API), both mention that it is a Java issue mentioned here (since 2015...): https://github.com/spring-projects/spring-data-jpa/issues/1115
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How do access sql through java in the real world?
If you go with hibernate note that there are a few different ways to use it. It can be used standalone and it can be used as a JPA implementation. If you use Spring and use hibernate as a JPA implementation then a popular Spring data layer abstraction is Spring Data which has JPA support with its Spring Data JPA library (https://spring.io/projects/spring-data-jpa)
JDBI
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Permazen: Language-natural persistence to KV stores
While this may work for greenfield applications, I don't see this working well for preexisting schemas. From their getting started page: "Database fields are automatically created for any abstract getter methods", which definitely scares me away since they seem to be relying on automatic field type conversions.
I prefer to manage my schemas when I can and do type and DAO conversions via mapper classes in the very simple and elegant JDBI framework where you write SQL annotations above your DAO methods https://jdbi.org/#_declarative_api
JDBI does wonders for wonky old schemas you've inherited, since joins etc work out of the box (just throw them in your annotations!) The annotations can also link to .SQL files for the big hairy queries.
All these "do magic" frameworks (hibernate being one of the first) work in the simple cases but then fall apart whenever you need to do anything complex/not-prescribed. I end up having to dig into the internals of the framework to see what's going wrong which negates their whole value add.
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Is ORM still an anti-pattern?
> I've been doing ORM on Java since Hibernate was new, and it has always sucked.
Have you ever looked at something like myBatis? In particular, the XML mappers: https://mybatis.org/mybatis-3/dynamic-sql.html
Looking back, I actually quite liked it - you had conditionals and ability to build queries dynamically (including snippets, doing loops etc.), while still writing mostly SQL with a bit of XML DSL around it, which didn't suck as much as one might imagine. The only problem was that there was still writing some boilerplate, which I wasn't the biggest fan of.
Hibernate always felt like walking across a bridge that might collapse at any moment (one eager fetch away from killing the performance, or having some obscure issue related to the entity mappings), however I liked tooling that let you point towards your database and get a local set of entities mapped automatically, even though codegen also used to have some issues occasionally (e.g. date types).
That said, there's also projects like jOOQ which had a more code centric approach, although I recall it being slightly awkward to use in practice: https://www.jooq.org/ (and the autocomplete killed the performance in some IDEs because of all the possible method signatures)
More recently, when working on a Java project, I opted for JDBI3, which felt reasonably close to what you're describing, at the expense of not being able to build dynamic queries as easily, as it was with myBatis: https://jdbi.org/
That said, with the multi-line string support we have in Java now, it was rather pleasant regardless: https://blog.kronis.dev/tutorials/2-4-pidgeot-a-system-for-m...
I don't think there's a silver bullet out there, everything from lightweight ORMs, to heavy ORMs like Hibernate, or even writing pure SQL has drawbacks. You just have to make the tradeoffs that will see you being successful in your particular project.
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Sketch of a Post-ORM
I found JDBi[1] to be a really nice balance between ORM and raw SQL. It gives me the flexibility I need but takes care of a lot of the boilerplate. It's almost like a third category.
1. http://jdbi.org
- Is it just me, or does the Spring Framework lead to hard-to-maintain code and confusion with annotations?
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Can someone tell me a good resource to learn and practice JDBC in java?
You could use something like jdbi or mybatis. It's not as ugly as raw jdbc and easier to use without all of the gunk from an ORM like hibernate.
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Which JVM Language Would You Choose for a New Server-Side Project?
We use JDBI. Very simple and lightweight. It uses an object mapper not a full fledged ORM.
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Why people don't like Java?
Alternatively there are... hybrid solutions like Kotlin's https://github.com/JetBrains/Exposed or https://jdbi.org/ that don't quite... do all the heavy lifting for querying but allow you to sorta stitch queries together manually.
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Top 5 Server-Side Frameworks for Kotlin in 2022: Micronaut
As seems that Micronaut does not include anything similar by default, we use JDBI and that SQL to retrieve one random greeting from the greetings table.
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Fiz um mapa interativo com os resultados do segundo turno do STE com postgres (+postgis) e openlayers
Ah! E sobre o que eu usei no backend, alem de postgres e fly.io, o backend eh eh Java, usando um framework chamado quarkus e jdbi pra fazer a interface com o banco.
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Is JDBC becoming a “legacy” API??
More personally, I'm not much an ORM guy. I've just never found that the benefits outweigh the costs, but that's just my opinion. That said, I don't use JDBC directly in my own projects anymore, strongly preferring to use JDBI instead. I find that it walks the line between "make using the database easier" and "get between you and the database" beautifully. But there's not a darn thing wrong with using JDBC directly.
What are some alternatives?
MyBatis - MyBatis SQL mapper framework for Java
jOOQ - jOOQ is the best way to write SQL in Java
HikariCP - 光 HikariCP・A solid, high-performance, JDBC connection pool at last.
spring-data-r2dbc - Provide support to increase developer productivity in Java when using Reactive Relational Database Connectivity. Uses familiar Spring concepts such as a DatabaseClient for core API usage and lightweight repository style data access.
sql2o - sql2o is a small library, which makes it easy to convert the result of your sql-statements into objects. No resultset hacking required. Kind of like an orm, but without the sql-generation capabilities. Supports named parameters.
Hibernate - Hibernate's core Object/Relational Mapping functionality
Querydsl - Unified Queries for Java
Apache Cayenne - Mirror of Apache Cayenne
Flyway - Flyway by Redgate • Database Migrations Made Easy.
blaze-persistence - Rich Criteria API for JPA providers
requery - requery - modern SQL based query & persistence for Java / Kotlin / Android