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ANNOUNCE: JIGS Version 0.7.0.
From: |
Adam Fedor |
Subject: |
ANNOUNCE: JIGS Version 0.7.0. |
Date: |
Fri, 06 Oct 2000 10:13:45 -0600 |
This is the announcement of JIGS Version 0.7.0.
What is JIGS ?
==============
JIGS is a free (LGPL) Java Interface for GNUstep; it can automatically
wrap Objective-C libraries based on GNUstep making them accessible
directly to the Java programmer as if they were Java libraries. As a
side effect, the whole engine can be used in the reverse way: JIGS
provides a high level API to allow Objective-C programmers to start
java virtual machines inside GNUstep Objective-C code and access
transparently java objects in the java virtual machine as if they were
objective-C objects.
Authors
=======
JIGS was brought to you by Nicola Pero <nicola@brainstorm.co.uk>.
Brainstorm Computer Solutions (http://www.brainstorm.co.uk) funded the
development of JIGS.
Maintainers
===========
JIGS is currently maintained by Nicola Pero <nicola@brainstorm.co.uk>.
Release Notes for JIGS version 0.7
==================================
This release adds support for morphing of selectors. This improvement
required extensive additions to the JIGS core engine and to the
WrapCreator tool.
Release Notes for JIGS version 0.6
==================================
This release supports building wrappers of debugging libraries, and
keeping and running them on the same system as wrappers of
not-debugging libraries.
Release Notes for JIGS version 0.5
==================================
This release includes a first very partial and experimental wrapper of
the gnustep gui library; WrapCreator supports prerequisite libraries;
bug fixes.
Release Notes for JIGS version 0.4
==================================
This release includes a first partial wrapper of the gnustep base
library; the WrapCreator tool has been modified to parse the header
file only once, so it is now much faster. Many bug fixes too.
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.
Software Needed to Use JIGS
===========================
To use the JIGS, you need:
* A version of the Objective-C runtime library compiled as a shared
library (and working with GNUstep). Please refer to the INSTALL
file for more information on how to compile and install it. This is
needed only to load objective-C libraries into a running java
virtual machine, while you don't need it to start a java virtual
machine inside an already running objective-C app or tool. Please
note that there are no examples yet of doing the latter in JIGS
though, so if you want to play comfortably, getting a shared
Objective-C runtime library is recommended.
* GNUstep make package and base library.
* A java development environment supporting JNI 1.2.
Special Thanks
==============
To Richard Frith-Macdonald <richard@brainstorm.co.uk> for countless
discussions and help during development of JIGS 0.1.
Obtaining JIGS
==============
JIGS is available at http://www.gnustep.it/jigs/Download/
New releases and snapshots can usually be found on the JIGS homepage,
http://www.gnustep.it/jigs/.
You may always get the latest version of JIGS from the GNUstep CVS -
the module is called 'java'.
Bug Reports
===========
The best way to submit bug reports and fixes is to email them to
<bug-gnustep@gnu.org>.
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