Proof Of Concept

Add JAVA SDK for GraphAr with FastFFI:

Map C++ InfoVersion to Java:

• static InfoVersion create(int version)
• int version()
• boolean checkType(@CXXReference StdString typeStr)
• @CXXReference StdVector userDefineTypes()

---

Require cmake 3.1, LLVM 11 and JDK 8.

1. Build and install fastFFI

   git clone https://github.com/alibaba/fastffi
   export LLVM11_HOME=<path-to-LLVM11-home>    # Ubuntu default: /usr/lib/llvm-11
   cd fastffi
   mvn clean install

2. Install gar library as GraphAr/cpp/README.rst teaches.

3. Clone this repository and test

   git clone https://github.com/Thespica/ffi-test.git
   cd ffi-test
   export LLVM11_HOME=<path-to-LLVM11-home>
   mvn clean test

   test successes info:

   [INFO] --- maven-surefire-plugin:3.0.0-M5:test (default-test) @ ffi-test ---
   [INFO] 
   [INFO] -------------------------------------------------------
   [INFO]  T E S T S
   [INFO] -------------------------------------------------------
   [INFO] Running com.alibaba.graphar.utils.InfoVersionTest
   [INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.329 s - in com.alibaba.graphar.utils.InfoVers
   ionTest
   [INFO]
   [INFO] Results:
   [INFO]
   [INFO] BUILD SUCCESS
   [INFO] ------------------------------------------------------------------------
   [INFO] Total time:  16.396 s
   [INFO] Finished at: 2023-06-18T12:16:28+08:00
   [INFO] ------------------------------------------------------------------------