https://github.com/querydsl/querydsl
Unified Queries for Java
https://github.com/querydsl/querydsl
Last synced: 6 days ago
JSON representation
Unified Queries for Java
- Host: GitHub
- URL: https://github.com/querydsl/querydsl
- Owner: querydsl
- License: apache-2.0
- Created: 2011-08-05T06:46:32.000Z (over 13 years ago)
- Default Branch: master
- Last Pushed: 2025-03-31T11:36:59.000Z (14 days ago)
- Last Synced: 2025-03-31T13:06:13.430Z (14 days ago)
- Language: Java
- Homepage: https://querydsl.com
- Size: 49.3 MB
- Stars: 4,840
- Watchers: 156
- Forks: 880
- Open Issues: 108
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE.txt
Awesome Lists containing this project
- awesome-java - QueryDSL
README
## Querydsl
Querydsl is a framework which enables the construction of type-safe SQL-like queries for multiple backends including JPA, MongoDB and SQL in Java.
Instead of writing queries as inline strings or externalizing them into XML files they are constructed via a fluent API.
[](https://querydsl.github.io/)
[](https://github.com/querydsl/querydsl/actions)
[](https://coveralls.io/github/querydsl/querydsl?branch=master)
[](https://stackoverflow.com/questions/tagged/querydsl)
[](https://maven-badges.herokuapp.com/maven-central/com.querydsl/querydsl-core/)
**Getting started**
Use these tutorials to get started
* [Querying JPA](http://www.querydsl.com/static/querydsl/latest/reference/html/ch02.html#jpa_integration)
* [Querying SQL](http://www.querydsl.com/static/querydsl/latest/reference/html/ch02s03.html)
* [Querying Mongodb](http://www.querydsl.com/static/querydsl/latest/reference/html/ch02s07.html)
* [Querying Lucene](http://www.querydsl.com/static/querydsl/latest/reference/html/ch02s05.html)
* [Querying Collections](http://www.querydsl.com/static/querydsl/latest/reference/html/ch02s08.html)
* [Querydsl Spatial](http://www.querydsl.com/static/querydsl/latest/reference/html/ch02s04.html)
* [Querying JDO](http://www.querydsl.com/static/querydsl/latest/reference/html/ch02s02.html)
**Examples**
[Querydsl example projects](https://github.com/querydsl/querydsl/tree/master/querydsl-examples)
**Support**
Free support is provided in the [Discussion Section](https://github.com/querydsl/querydsl/discussions) and on [StackOverflow](http://stackoverflow.com/questions/tagged/querydsl).
Please do not post questions as issue. Such issues will be closed immediately.
**How to build**
Querydsl provides releases via public Maven repositories, but you can also build the sources yourself like this
```BASH
$ mvn -Pquickbuild,{projectname} clean install
```
Where projectname is one of the Maven profiles (e.g. `jpa`, `sql`, `mongodb`, etc. or `all`)
For more information visit the project homepage at https://querydsl.github.io.
**Docker Compose setup**
For running tests, a Docker Compose setup is provided. It comes with the following databases:
* Oracle Express Edition 11g
* PostgreSQL 9.1.10
* MySQL 5.5.34
* Cubrid 9.2
You will need to install [Docker] and [docker-compose].
To launch the database containers:
```BASH
$ docker-compose up -d
```
All of the databases' default ports are forwarded to the host machine.
**How to contribute**
GitHub pull requests are the way to contribute to Querydsl.
If you are unsure about the details of a contribution, ask on the Querydsl Google Group or create a ticket on GitHub.
[Docker]: https://www.docker.com/products/docker-desktop
[docker-compose]: https://docs.docker.com/compose/
### Slack
If you want to join Slack workspace for Querydsl contributors join by following [this link](https://join.slack.com/t/querydsl/shared_invite/zt-r7ufzz6q-zxIHgpOSSMFvoU3YU4SclQ).