JDBI
Flyway
Our great sponsors
JDBI | Flyway | |
---|---|---|
27 | 79 | |
1,892 | 7,728 | |
1.0% | 1.1% | |
9.5 | 7.2 | |
5 days ago | 15 days ago | |
Java | Java | |
Apache 2.0 license | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
JDBI
-
Permazen: Language-natural persistence to KV stores
Someone else mentioned jOOQ, but personally I also rather enjoyed JDBI3: https://jdbi.org/#_introduction_to_jdbi_3
It addresses the issues with using JDBC directly (not nice ergonomics), while still letting you work with SQL directly without too many abstractions in the middle. In combination with Dropwizard, it was pretty pleasant: https://www.dropwizard.io/en/stable/manual/jdbi3.html
Other than that, I actually liked using myBatis with XML mappers: https://mybatis.org/mybatis-3/sqlmap-xml.html and their dynamic functionality: https://mybatis.org/mybatis-3/dynamic-sql.html
It might sound a bit of crazy on the surface, but their DSL actually made sense and was intertwined with the SQL you wrote, a bit like templating that you might use for front end stuff, except that directly for your database queries. It was great for adding complex WHERE parts for specific filters or re-using parts of queries.
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.
-
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.
-
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.
- Is it just me, or does the Spring Framework lead to hard-to-maintain code and confusion with annotations?
-
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.
-
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.
-
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.
-
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.
-
What are some more options or good practices for dynamic SQL query building?
I really like JDBI. It’s thin enough that it lets you do anything SQL can do, but opinionated enough to provide a sane, sturdy, structured approach to working with a database.
Flyway
-
PostgreSQL Is Enough
There is a bit of tooling needed but is already around. For Java for example I had very good experience with a combination of flyway [1] for migrations, testcontainers [2] for making integration tests as easy as unit tests and querydsl [3] for a query and mapping layer.
[1] https://github.com/flyway/flyway
[2] https://java.testcontainers.org/modules/databases/postgres/
-
CI/CD for Databricks
If you're looking for tools, like https://www.liquibase.com/ or https://flywaydb.org/, which are database-state-based schema migration toolkits - it might be relatively straightforward to build similar ones using Databricks SQL drivers.
-
Working with jOOQ and Flyway using Testcontainers
Honestly I kind of wish there was a Lukas Eder database migration library. Call it whatever jooq-migration. At least I would have more insight of what is going on (<-- seriously look at the commit history).
-
Strategy to run database scripts on Kubernetes
This is a 4th option, which should play nice with ArgoCD. The following example runs flyway as a k8s job. The desired migration changes are recorded as files within the chart. This helm chart can be integrated with your application (Using hooks to determine when the migration job is run) or run manually.
-
How do your teams run DB migrations?
By using an opinionated framework within the app/service (like Flyway, Migrate, Diesel, etc). Schema migrations happen on app/service start-up.
-
Version control for database used by C# app
Flyway
-
Using Flyway for Database Setup
The grown-up way of creating a database schema is migrations, and no-one ever got fired for choosing Flyway (https://flywaydb.org/), so that's what we'll investigate today. By the end we are able to create the same schema as Exposed was creating, and then, as a second migration, add some constraints to the items table to reflect the reality of our data. And the transition from Exposed to jOOQ is complete!
-
How to run DB migrations in CICD Pipeline
We use https://flywaydb.org/. You can do the migration before or during service start-up. We do it during.
-
🏅 Http4k: Top 5 Server-Side Frameworks for Kotlin in 2022
We just create the greetings table if it does not exist (instead of any database migration library like flyway)
-
How to people organize their Repos?
Also, from the "DevOps" point of view, this totally depends on what you want to achieve. If is a project that has changes on the database (new views, new tables...) on a regular basis I would consider using https://flywaydb.org/ in the pipeline.
What are some alternatives?
alembic - A database migrations tool for SQLAlchemy.
jOOQ - jOOQ is the best way to write SQL in Java
Spring Data JPA - Simplifies the development of creating a JPA-based data access layer.
HikariCP - 光 HikariCP・A solid, high-performance, JDBC connection pool at last.
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.
Querydsl - Unified Queries for Java
roundhouse - RoundhousE is a Database Migration Utility for .NET using sql files and versioning based on source control
H2 - H2 is an embeddable RDBMS written in Java.
dbmate - :rocket: A lightweight, framework-agnostic database migration tool.
Hibernate - Hibernate's core Object/Relational Mapping functionality
Apache Hive - Apache Hive