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https://github.com/dmarrazzo/dmn-calls-java
Calling Java from DMN
https://github.com/dmarrazzo/dmn-calls-java
Last synced: about 2 months ago
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Calling Java from DMN
- Host: GitHub
- URL: https://github.com/dmarrazzo/dmn-calls-java
- Owner: dmarrazzo
- Created: 2022-01-26T09:50:41.000Z (over 2 years ago)
- Default Branch: main
- Last Pushed: 2022-04-29T17:12:06.000Z (over 2 years ago)
- Last Synced: 2024-06-09T16:44:06.065Z (4 months ago)
- Language: HTML
- Size: 14.6 KB
- Stars: 1
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# DMN calls Java Project
This project shows how to call a Java method from a DMN decision. It relies on Kogito sitting on Quarkus, the Supersonic Subatomic Java Framework.
Blog article: https://blog.kie.org/2022/01/dmn-calls-java.html
Learn more about Kogito: https://kogito.kie.org/
Learn more about Quarkus: https://quarkus.io/ .
## Running the application in dev mode
You can run your application in dev mode that enables live coding using:
```shell script
./mvnw compile quarkus:dev
```
Probe the DMN using the Open API form: http://localhost:8080/openapi-ui-forms/index.html
> **_WARNING_**: At the first attempt you could get an error, just reload the page and it will run.
Quarkus Dev UI is reachable at http://localhost:8080/q/dev/.
## Packaging and running the application
The application can be packaged using:
```shell script
./mvnw package
```
It produces the `quarkus-run.jar` file in the `target/quarkus-app/` directory.
Be aware that it’s not an _über-jar_ as the dependencies are copied into the `target/quarkus-app/lib/` directory.
The application is now runnable using `java -jar target/quarkus-app/quarkus-run.jar`.
If you want to build an _über-jar_, execute the following command:
```shell script
./mvnw package -Dquarkus.package.type=uber-jar
```
The application, packaged as an _über-jar_, is now runnable using `java -jar target/*-runner.jar`.
## Creating a native executable
You can create a native executable using:
```shell script
./mvnw package -Pnative
```
Or, if you don't have GraalVM installed, you can run the native executable build in a container using:
```shell script
./mvnw package -Pnative -Dquarkus.native.container-build=true
```
You can then execute your native executable with: `./target/dmn-calls-java-1.0.0-SNAPSHOT-runner`
If you want to learn more about building native executables, please consult https://quarkus.io/guides/maven-tooling.
## Related Guides
- Kogito - Decisions (DMN) ([guide](https://quarkus.io/guides/kogito-dmn)): Add Kogito decision (DMN) capabilities - Include Drools DMN engine
## Provided Code
### Kogito DMN codestart
This is an example Kogito DMN Quarkus codestart, it contains a sample DMN model for REST code generation based on the model definition.
[Related guide section...](https://quarkus.io/guides/kogito-dmn)
This Kogito DMN Quarkus codestart contains a sample DMN model as described in the [Quarkus Kogito DMN guide](https://quarkus.io/guides/kogito-dmn).
The goal is to showcase automatic REST endpoint codegen, based on the content of the model.
The `pricing.dmn` DMN model calculates a base price quotation based on some criteria provided as input.
You can reference the [full guide on the Quarkus website](https://quarkus.io/guides/kogito-dmn).