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Is it possible to add aspectj code to the eclipse platform [message #1094834]

Mon, 26 August 2013 05:00

Jun Yu
Messages: 11
Registered: August 2013

Junior Member

Since the eclipse 3.x is based on OSGi framework i am wondering if I can develop the eclipse project in my eclipse 3.x and even add aspectj code to the eclipse?

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Re: Is it possible to add aspectj code to the eclipse platform [message #1095104 is a reply to message #1094834]

Mon, 26 August 2013 12:26

Andrew Eisenberg
Messages: 336
Registered: July 2009

Senior Member

Of course there is!

Take a look at Equinox Weaving: http://eclipse.org/equinox/weaving/

Since OSGi uses separate classloaders for each bundle, there needs to be a new kind of support for weaving. EW is meant for load time weaving only. If you want to do compile time weaving, then you can use a regular aspectj compiler. But this only works if you only weave into code that you produce.

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Re: Is it possible to add aspectj code to the eclipse platform [message #1095349 is a reply to message #1095104]

Mon, 26 August 2013 20:27

Jun Yu
Messages: 11
Registered: August 2013

Junior Member

thk u for answering. i have been viewed the link and i have developed some equinox aspectj projects.the question confuse me most is if the eclipse3.x source code could be import into the eclipes workspace like an standard osgi project(as the attachment)? i have tried serveal times but all failed.

Attachment: 1.png
(Size: 10.21KB, Downloaded 10 times)

[Updated on: Mon, 26 August 2013 20:43]

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Re: Is it possible to add aspectj code to the eclipse platform [message #1095424 is a reply to message #1095349]

Mon, 26 August 2013 23:22

Andrew Eisenberg
Messages: 336
Registered: July 2009

Senior Member

As of Eclipse Juno, there should be no problems importing Equinox Weaving into an Eclipse instance. However, the next version of Eclipse (to be released in June 2014( will have some incompatibilities and we will need to make some changes to EW in order to get this working.

However, as long as you are working with Juno or earlier, you should be fine.

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Re: Is it possible to add aspectj code to the eclipse platform [message #1095531 is a reply to message #1095424]

Tue, 27 August 2013 03:20

Jun Yu
Messages: 11
Registered: August 2013

Junior Member

thk u , so what i want to do is downloading the souce code of eclipse and just import into my workspace? i did import the source code of eclipse3.1.1 to the eclipse ide(3.7) which reported a lot of errors(attachment). did i misunderstand your meaning?

[Updated on: Tue, 27 August 2013 03:22]

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Re: Is it possible to add aspectj code to the eclipse platform [message #1095839 is a reply to message #1095531]

Tue, 27 August 2013 11:48

Andrew Eisenberg
Messages: 336
Registered: July 2009

Senior Member

You should not need to import anything from Eclipse 3.1.1. All you need is to have Equinox Weaving in your target platform. Read more about target platforms here: http://help.eclipse.org/indigo/index.jsp?topic=%2Forg.eclipse.pde.doc.user%2Fconcepts%2Ftarget.htm

You can add Equinox Weaving to your target platform through the AJDT update site, here: http://download.eclipse.org/tools/ajdt/43/update

There is an Equinox Weaving feature that you can use.

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Re: Is it possible to add aspectj code to the eclipse platform [message #1096172 is a reply to message #1095839]

Tue, 27 August 2013 23:30

Jun Yu
Messages: 11
Registered: August 2013

Junior Member

Ok, i got it ,thk u very much!

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Re: Is it possible to add aspectj code to the eclipse platform [message #1109837 is a reply to message #1095839]

Sun, 15 September 2013 23:04

Jun Yu
Messages: 11
Registered: August 2013

Junior Member

Hi,since last time I got instruction from u ,i have successfully weaving my aspect code to the eclipse platform by EW. However, it seems that not every bundle could be added aop code. I am confused. I successfully added aspect to the org.eclipse.ui.workbench and org.eclipse.core.databinding.observable, so it should be success on all the bundles, should not it? Here is my failed case:
I was try to add aop to the org.eclipse.equinox.app and my aspect project is like this

package org.eclipse.equinox.app.aspect.aspect;

public aspect MyAspect {
	before() :execution( synchronized void org.eclipse.equinox.internal.app.EclipseAppHandle.setAppStatus(int)){
		System.out.print("Hello");
	}
}

and my MANIFEST.MF

Manifest-Version: 1.0
Bundle-ManifestVersion: 2
Bundle-Name: Aspect
Bundle-SymbolicName: org.eclipse.equinox.app.aspect
Bundle-Version: 1.0.0.qualifier
Bundle-Activator: org.eclipse.equinox.app.aspect.activator.Activator
Bundle-ActivationPolicy: lazy
Bundle-RequiredExecutionEnvironment: JavaSE-1.7
Import-Package: org.eclipse.equinox.app;version="1.1.0",
 org.osgi.framework;version="1.3.0"
Require-Bundle: org.aspectj.runtime
Export-Package: org.eclipse.equinox.app.aspect.aspect
Eclipse-SupplementBundle: org.eclipse.equinox.app

and my attempts to add aop to the org.eclipse.equinox.launcher and the org.eclipse.osgi were also failed.
Is my aspect code have some problems or not every bundles of eclipse platform can be add aop code?

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Re: Is it possible to add aspectj code to the eclipse platform [message #1109858 is a reply to message #1109837]

Sun, 15 September 2013 23:52

Andrew Eisenberg
Messages: 336
Registered: July 2009

Senior Member

Your problem is with bootstrapping. There are a few bundles that need to be loaded before EW can be loaded. org.eclipse.osgi and org.eclipse.equinox.launcher are two of them. There aren't many others, but I think there are a few. You can minimize the number of unweavable bundles by ensuring the start level for org.eclipse.equinox.weaving.aspectj is set to level 1.

But, unfortunately, there is no way of getting around not being able to weave into these very early starting bundles. You can try going for compile time weaving.

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Re: Is it possible to add aspectj code to the eclipse platform [message #1109897 is a reply to message #1095839]

Mon, 16 September 2013 01:15

Jun Yu
Messages: 11
Registered: August 2013

Junior Member

package org.eclipse.equinox.app.aspect.aspect;

public aspect MyAspect {
	before() :execution( synchronized void org.eclipse.equinox.internal.app.EclipseAppHandle.setAppStatus(int)){
		System.out.print("Hello");
	}
}

and my MANIFEST.MF

Manifest-Version: 1.0
Bundle-ManifestVersion: 2
Bundle-Name: Aspect
Bundle-SymbolicName: org.eclipse.equinox.app.aspect
Bundle-Version: 1.0.0.qualifier
Bundle-Activator: org.eclipse.equinox.app.aspect.activator.Activator
Bundle-ActivationPolicy: lazy
Bundle-RequiredExecutionEnvironment: JavaSE-1.7
Import-Package: org.eclipse.equinox.app;version="1.1.0",
 org.osgi.framework;version="1.3.0"
Require-Bundle: org.aspectj.runtime
Export-Package: org.eclipse.equinox.app.aspect.aspect
Eclipse-SupplementBundle: org.eclipse.equinox.app

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Re: Is it possible to add aspectj code to the eclipse platform [message #1109898 is a reply to message #1095839]

Mon, 16 September 2013 01:15

Jun Yu
Messages: 11
Registered: August 2013

Junior Member

No Message Body

[Updated on: Mon, 16 September 2013 01:20]

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Re: Is it possible to add aspectj code to the eclipse platform [message #1109902 is a reply to message #1109858]

Mon, 16 September 2013 01:19

Jun Yu
Messages: 11
Registered: August 2013

Junior Member

OK, i once thought about that but i am not sure . Thanks Andrew! Smile

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Re: Is it possible to add aspectj code to the eclipse platform [message #1110121 is a reply to message #1109858]

Mon, 16 September 2013 07:59

Jun Yu
Messages: 11
Registered: August 2013

Junior Member

By the way, for my current work i have to understand the relationship between each plugin of eclipse platform. i have started to read the source code of eclipse platform, but a lot of time would be taken, so i wonder if there is somewhere introduce the functions of each bundle of eclipse platform or not so that i can focus on my job directly.

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