Release Notes for JIGS version 0.3

First release of WrapCreator, an automatic wrapper tool for JIGS. The wrapper can automatically generate the code to wrap an objective-C library to Java.

Release Notes for JIGS version 0.2

Alpha support for subclassing an Objective-C class in Java. Better support for exposing Objective-C class methods to Java.

Release Notes for JIGS version 0.1

This is the first public release. While the core engine is mostly working, the high level APIs and tools are still missing. In particular, we don't have a wrapper tool yet. And, the base gnustep library has not yet been wrapped.

The core engine is organized in the following way:

• A little library (ObjcRuntimeUtilities) to programmatically add classes and methods to the objective-C runtime while it is running;
• A little library (GSJNI) of utilities to program JNI using GNUstep;
• A little class (NSJavaVirtualMachine) keeping track of the java virtual machine presently running and incidentally providing a simple API to start a java virtual machine;
• The real core engine (JIGS itself), built on top of the previous layers. Most of it is written in Objective-C, but part is in Java.

Version 0.1 contains an example of an objective-C gnustep library wrapped by hand and exposed as a Java library. Following this example, it should not be too difficult to wrap by hand simple libraries.

Tests and examples of the reverse (starting a java virtual machine in an Objective-C executable and accessing java objects from objective-C) have been written, but not included in JIGS 0.1.