org.forgerock / org.forgerock.opendj

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README-AspectJ.html

AspectJ Readme

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AspectJ^TM

Version 1.5.3 released on Wednesday Nov 22, 2006.

1 Contents of this Package

the <aspectj install dir>/bin
directory has scripts for
- ajc: the compiler for the AspectJ language
- ajbrowser: a graphical editor for
  compiling programs with ajc
  and navigating the crosscutting structure of those programs
the directory <aspectj install dir>/lib
has the AspectJ binaries,
- aspectjtools.jar: libraries for
  ajc, ajbrowser, and the Ant tasks
- aspectjrt.jar: runtime library for AspectJ programs

the directory <aspectj install dir>/doc
has examples, programming and development environment guides,
instructions for the Ant tasks, a README for 1.1 changes,
and a quick reference, all linked
from the index page.

this README-AspectJ.html, and

the LICENSE-AspectJ.html
applying to this distribution.

2 Install Procedure

The AspectJ tools ajc and ajbrowser are
Java programs that can be run indirectly from the scripts or
directly from aspectjtools.jar.
The aspectjrt.jar needs to be on the classpath
when compiling or running programs compiled
by ajc. This procedure shows ways to do that.

After finishing automatic installation, we recommend that the
following steps to complete your installation:

2.1 Add <aspectj install dir>/lib/aspectjrt.jar
to your class path

This small .jar file contains classes required to compile programs
with the ajc compiler, and to run programs compiled with the ajc
compiler. You must have these classes somewhere on your class path
when running programs compiled with ajc. For detailed instructions
please see the Configuration
Instructions at the bottom of this document.

2.2 Put the AspectJ bin directory on your PATH

Modify your PATH to include <aspectj install dir>/bin. This will make it easier to run ajc.
For detailed instructions please see the
Configuration Instructions at the
bottom of this document.

2.3 Review the documentation and examples

Development and programming guides
are available in docs,
and example programs and an Ant script are available in
examples.

If you did not use the automatic installation process, you may wish
to create short launch scripts to start ajc easily (section 3).

3. Running the Tools

If you did not use the automatic installation process or the
default launch scripts do not work on your system, you may wish to
create short launch scripts to start ajc easily.

You can also run the aspectjtools.jar directly
using java's -jar option:

C:\jdk1.3\bin\java.exe -jar D:\aspectj\lib\aspectjtools.jar %*

With no arguments or only argument list (.lst) files, this will launch
ajbrowser, the GUI structure browser; otherwise, it will
run ajc, the AspectJ compiler. This means that
if your browser is set up to run jar files, clicking a link
to lib/aspectjtools.jar will
launch ajbrowser.

You can also create scripts like those created by the installer.
These scripts use full paths that are system dependent so you will
likely have to change these.

Here's a sample launch script for WinNT and Win2K (note that this
is single line in the .bat file):

C:\jdk1.3\bin\java.exe -classpath D:\aspectj\lib\aspectjtools.jar -Xmx64M org.aspectj.tools.ajc.Main %*

Here's a sample launch script for a Unix shell (on Linux using Sun's JDK1.3):

/usr/java/jdk1.3/jre/bin/java -classpath /home/aspectj/lib/aspectjtools.jar -Xmx64M org.aspectj.tools.ajc.Main "$@"

4. Configuration Instructions

4.1 Adding `<aspectj install dir>/lib/aspectjrt.jar` to your classpath

There are several ways to add this jar file to your classpath:

copy aspectjrt.jar to the jdk/jre/lib/ext directory

add aspectjrt.jar to your CLASSPATH
environment variable (see the next section for details)

always use the "-classpath aspectjrt.jar" option when running
programs compiled with ajc

4.2 Setting the Environment Variables on Windows

The following instructions use the PATH variable as an example, but
this process is identical for the CLASSPATH variable.

You can do the variables permanently for all the shells that you
will run or temporarily only for the current shell. To change the
PATH only in the current shell, and assuming you've installed AspectJ
in C:\apps\aspectj, type:

> set PATH=%PATH%;C:\apps\aspectj\bin

Changing Environment Variables Permanently on WinNT and Win2000

open the Environment Variables dialog
- WinNT: in "Control Panels" double-click
  "System" and select the "Environment" tab
- Win2K: in "Control Panels" double-click
  "System", select the "Advanced" tab and click the
  "Environment Variables..." button

select the environment variable for editing, or add it
using the "New..." button if it does not exist

add the new entry separated from the others by a
semi-colon (;) and close the dialog

note that the change will not affect shells that were
already running

Changing Environment Variables Permanently on Win9x

open the AUTOEXEC.BAT with an editor such as NotePad

edit the PATH statement to include the new entry and save
the file, e.g.

PATH C:\WINDOWS;C:\WINDOWS\COMMAND;C:\;C:\DOS;C:\apps\aspectj\bin

note that the change will not affect shells that were
already running