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r2dbc-client

(★ 344)

Reactive Relational Database Connectivity

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Download Latest Version (.zip)

- - maven-wrapper.jar
  - maven-wrapper.properties
  - MavenWrapperDownloader.java
- build.sh
- build.yml
- builder.yml
- create-release.sh
- docker-lib.sh
- Dockerfile
- release.sh
- release.yml
.gitignore
CHANGELOG
intellij-style.xml
LICENSE
mvnw
mvnw.cmd
NOTICE
pom.xml
README.md

# Installation Guide

1. Get the code

git clone https://github.com/r2dbc/r2dbc-client

Downloads the entire project code from GitHub to your computer.

cd r2dbc-client

Moves into the project folder you just downloaded.

2. Docker

Easy Recommended

Prerequisites

Git Needed to download the project code from GitHub.
Docker Desktop Needed to build and run containers. Install it and keep it running in the background.

docker build -f ci/Dockerfile -t r2dbc-client .

Builds a runnable image based on the Dockerfile.

docker run -p 8080:80 r2dbc-client

Runs the built image as an actual container.

✅ Run docker compose ps to check the containers are Up. If the README mentions a port, open http://localhost:PORT in your browser.

3. Maven (Java)

Medium

Prerequisites

Git Needed to download the project code from GitHub.
JDK (Java) Required to build and run Java projects.
Maven The build tool used for the mvn command.

mvn clean install

Installs dependencies and builds the project using Maven.

✅ A BUILD SUCCESS message means it worked. The output is created under target/.

// repository documentation

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This project is no longer being actively maintained.

# Reactive Relational Database Connectivity Client (Archived)
This project is an exploration of what a Java API for relational database access with [Reactive Streams][rs] might look like.  It uses [Project Reactor][pr].  It uses [Jdbi][jd] as an inspiration.

[jd]: http://jdbi.org
[pr]: https://projectreactor.io
[rs]: https://www.reactive-streams.org

## Examples
A quick example of configuration and execution would look like:

```java
PostgresqlConnectionConfiguration configuration = PostgresqlConnectionConfiguration.builder()
    .host("<host>")
    .database("<database>")
    .username("<username>")
    .password("<password>")
    .build();

R2dbc r2dbc = new R2dbc(new PostgresqlConnectionFactory(configuration));

r2dbc.inTransaction(handle ->
    handle.execute("INSERT INTO test VALUES ($1)", 100))

.thenMany(r2dbc.inTransaction(handle ->
        handle.select("SELECT value FROM test")
            .mapResult(result -> result.map((row, rowMetadata) -> row.get("value", Integer.class)))))

.subscribe(System.out::println);
```

## Maven
Both milestone and snapshot artifacts (library, source, and javadoc) can be found in Maven repositories.

```xml
<dependency>
  <groupId>io.r2dbc</groupId>
  <artifactId>r2dbc-client</artifactId>
  <version>0.8.0.RC1</version>
</dependency>
```

Artifacts can bound found at the following repositories.

### Repositories
```xml
<repository>
    <id>spring-snapshots</id>
    <name>Spring Snapshots</name>
    <url>https://repo.spring.io/snapshot</url>
    <snapshots>
        <enabled>true</enabled>
    </snapshots>
</repository>
```

```xml
<repository>
    <id>spring-milestones</id>
    <name>Spring Milestones</name>
    <url>https://repo.spring.io/milestone</url>
    <snapshots>
        <enabled>false</enabled>
    </snapshots>
</repository>
```

## License
This project is released under version 2.0 of the [Apache License][l].

[l]: https://www.apache.org/licenses/LICENSE-2.0