On Thu, 4 Oct 2001, Deacon Marcus wrote: > Date: Thu, 4 Oct 2001 01:50:53 +0200 > From: Deacon Marcus <[EMAIL PROTECTED]> > Reply-To: [EMAIL PROTECTED] > To: [EMAIL PROTECTED] > Subject: [half-off-topic] Java Compilers > > Hi, > First, I'm sorry for being off-topic, but I have no idea where it would be > on-topic, so I write it here. Besides, at least some of you will be > interested. > I'm starting another project - run-time compiled java, which I would like to > develop into stable beta and then donate to ASF. > > There would be two classes, CompileUnit and CompileContext. > First, you create a CompileContext, initialize it with working dir and > classpath, then you create CompileUnit, initialize it with CompileContext > and a .java file. Then, you can call .prepare() or .compile() to compile the > file, and .newInstance() to create an instance or .getClass() to get Class. > Or you could use Class.forName(), since in most cases CompileContext's > classpath would be active classpath. > I'm sure you see the similarity to .JSP now. > While it may seem basic, having API for this wouldn't hurt. > Possible scenario: > Supponse, there's some kind of mail server with *extremely* complicated > rule-set in form of 200kb+ xml. Why not take it, convert it into .java > implementing some interface, convert it to java source with hundreds if not > more ifs and cases, and load it as compiled code. > What I need: since JDK 1.4b2, tools.jar just isn't what it used to be... so > I need some kind of 100% java java compiler. And, I have no idea where to > search for one. Of course, there's dozens, but it must be both stable and > compatible with JDK 1.1 - 1.4. >
A conversation on a semi-related topic is currently running on the [EMAIL PROTECTED] list, about the potential contribution of the "bcel" library to Jakarta. It would be quite interesting if BCEL and/or your code could be used to create the generated classes for JSP pages without going through a Java compiler. > Greetings, deacon Marcus > > p.s. Is it ok for me to use org.apache.jjc (or org.apache. whatever) before > I officialy donate it, assuming I won't be distributing it before donating > anyway? It would *not* be wise to use org.apache under false pretenses. Even though you don't *intend* to distribute, it's difficult to move forward on an idea like this without showing it to some people. Also, there's no guarantee that Apache will accept it anyway -- especially if there is not already a development community built up around it. Craig
