About Grape JDK

Grape JDK is a subproject under GraphScope, presenting an efficient java SDK for GraphScope analytical engine: GRAPE. Grape JDK wrap the core c++ implemented APIs in Java interfaces, which guides Java programmers to implement a PIE algorithm from scratch. It also provides efficient implementation for cross-language communication by leveraging Alibaba fastFFI. See grape-jdk README for more information.

Project Structure

Grape JDK has three subprojects

  • grape-jdk: Defines the interfaces you need to write you own java app.

  • grape-runtime: Contains the implementation for the interfaces defines in grape-jdk. You never need it if you are just want to write a java app.

  • grape-demo: Having no idea how to implement your algorithm to fit Grape PIE programming model? Take a look at the provided sample apps, hopefully you will be inspired!

Building from source

You need fastFFI installed in your local repository before building grape-jdk.

git clone https://github.com/alibaba/fastFFI.git
cd fastFFI
mvn clean install -DskipTests -Dmaven.antrun.skip=true

Although Grape JDk only support clone & and building from source at the moment, we plans to distribute it through maven remote repository in near feature.

To only build grape-jdk

cd GraphScope/analytical_engine/java/grape-jdk
mvn clean install

If you want to build from parent project without building libgrape-jni.so

cd GraphScope/analytical_engine/java/
mvn clean install -Dmaven.antrun.skip=true

You can turn on the jni library building by remove the mvn option -Dmaven.antrun.skip=true. But you cannot expect a successful building if your develop environment doesn’t satisfy the following requirements.

  • GraphScope-GAE installed

  • libgrape-lite installed

  • mac/linux platform