Two years ago I wrote a tiny little piece of software that lets you combine Spring Dynamic Modules and the Equinox Extension Registry in an easy way. Now I found the time to put this SpringExtensionFactory on Github. So if you ever wanted to use Spring Dynamic Modules to inject dependencies into your RCP view and editors - take a look, its quite simple to use... :-)
Showing posts with label Equinox. Show all posts
Showing posts with label Equinox. Show all posts
Friday, October 15, 2010
Thursday, March 25, 2010
OSGi Best and Worst Practices at EclipseCon 2010
Together with Jeff McAffer, Chris Anisczcyk and Paul VanderLei I gave a talk on OSGi Best and Worst Practices here at Eclipse 2010. Here are the slides:
Friday, March 12, 2010
Slides on OSGi Best and Worst Practices from Java-User-Group-Meeting in Karlsruhe
I gave a talk at the Java User Group Karlsruhe last week on best and worst practices using OSGi for building business applications (thanks to David for inviting me). You can get the slides from the user group or directly here:
Thanks again for joining! The room was full of people and I especially enjoyed all the great questions and discussions during and after the talk. Thanks again, it was a pleasure to be a guest at the event!
Friday, February 12, 2010
Slides on OSGi Lessons Learned from OOP-2010 Conference
A few weeks ago I gave a talk at the OOP-2010 conference in Munich about the lessons I learned from building business apps on top of OSGi during the past five years. Finally I put the slides online:
Sorry for the delay!
Monday, November 16, 2009
OSGi for Eclipse Developers Webinar
Today I gave an Eclipse webinar on "OSGi for Eclipse Developers" together with Chris Aniszczyk and Bernd Kolb. We talked about various OSGi things that might sound strange and/or unfamiliar to you if you come from the Eclipse way of developing applications. We talked about the relationship of Eclipse and OSGi, dependency management and why you should use Import-Package instead of Require-Bundle, dynamics with OSGi, services vs. extensions, versioning, some compendium services and tooling for OSGi. If you missed the live broadcast, you can watch the entire webinar from here again. Enjoy!
Friday, November 13, 2009
Slides from WJAX Talk on Building Web-Apps with OSGi
I uploaded the slides of my talk on building web applications on top of OSGi that I gave yesterday at WJAX 2009 together with Gerd Wütherich and Peter Roßbach:
The slides are German only. Sorry about that... Hope you enjoy it anyway... :-)
Wednesday, November 11, 2009
Slides from OSGi Best Practices and OSGi Performance Bloopers talks at WJAX 2009
Here are the slides of my two talks that I gave today at the WJAX conference in Munich:
- OSGi Best Practices (pdf) (together with Matthias Lübken)
- OSGi Performance Bloopers (pdf)
Wednesday, October 28, 2009
Slides from Eclipse Summit Europe 2009
Monday, October 26, 2009
Ready for Eclipse Summit Europe 2009
Tomorrow I will travel to the Eclipse Summit Europe 2009 (Ludwigsburg, Germany) to meet great people, see interesting talks and participate in two session on stage: I am happy to present together with Jeff McAffer from EclipseSource our experiences using OSGi in various settings and the "best practices" that we extracted from that. So if you are interested in avoiding the faults and mistakes I did during the past years, join our talk (OSGi Best Practices) and see me talking about my own failures... :-) Its Wednesday at 1:30pm.
In the second talk I will give a short overview of the Equinox Weaving project (formerly known as Equinox Aspects), what's new and what's coming up in the future (Equinox Weaving: Bytecode Weaving in OSGi). So if you would like to hear more about bytecode weaving classes in an OSGi environment, don't miss these 20 minutes at Wednesday at 3:30pm.
See you all in Ludwigsburg!
In the second talk I will give a short overview of the Equinox Weaving project (formerly known as Equinox Aspects), what's new and what's coming up in the future (Equinox Weaving: Bytecode Weaving in OSGi). So if you would like to hear more about bytecode weaving classes in an OSGi environment, don't miss these 20 minutes at Wednesday at 3:30pm.
See you all in Ludwigsburg!
Saturday, September 19, 2009
Eclipse 3.6 M2 is out - and includes Equinox Weaving
The second milestone of Eclipse 3.6 is available for download - and its the first milestone build that includes the Equinox Weaving feature as part of the Equinox 3.6 M2 downloads.
After graduating the Equinox Aspects work we renamed it to Equinox Weaving. The reason for this is: The design separates between the base mechanism of modifying bytecode at class loading time and the actual bytecode modification. The AspectJ-based aspect weaving for bundles is just one of many possible bytecode modifiers you can think of. Another one that we implemented (but is not yet part of the Equinox Weaving project) allows you to use Springs load-time weaving infrastructure on top of a OSGi runtime together with Spring Dynamic Modules. And the nice thing about it is: While you are free to choose whatever weaver you like, the caching mechanism of Equinox Weaving works independent from all those weavers.
We still need to update the Equinox web to reflect the graduation and design changes of Equinox Weaving, but please feel free to take a look at it. We are happy to answer questions on the newsgroup and the mailing list.
Enjoy!
After graduating the Equinox Aspects work we renamed it to Equinox Weaving. The reason for this is: The design separates between the base mechanism of modifying bytecode at class loading time and the actual bytecode modification. The AspectJ-based aspect weaving for bundles is just one of many possible bytecode modifiers you can think of. Another one that we implemented (but is not yet part of the Equinox Weaving project) allows you to use Springs load-time weaving infrastructure on top of a OSGi runtime together with Spring Dynamic Modules. And the nice thing about it is: While you are free to choose whatever weaver you like, the caching mechanism of Equinox Weaving works independent from all those weavers.
We still need to update the Equinox web to reflect the graduation and design changes of Equinox Weaving, but please feel free to take a look at it. We are happy to answer questions on the newsgroup and the mailing list.
Enjoy!
Saturday, September 05, 2009
Eclipse Summit Europe 2009 Program Online
The technical program for Eclipse Summit Europe 2009 is now online and I am pretty happy to be part of it with two sessions:
- Equinox Aspects - Bytecode Weaving for OSGi: This is some kind of an update talk on the Equinox Aspects (or better: Equinox Weaving) project. Will give some insights what has happened and what is planned for the future.
- OSGi Best Practices: This is a joint talk with Jeff McAffer, Paul Vanderlei and Simon Archer where we will throw together our experiences from building apps on top of OSGi over the past years.
Thursday, July 02, 2009
Slides from Talk at Java-Forum-Stuttgart 2009
Today I gave a talk on building dynamic applications with OSGi at the Java-Forum-Stuttgart 2009. This was mostly the talk I gave (and prepared) together with Kai Tödter and Gerd Wütherich for previous conferences. Here are the slides:
The talk were in the main hall of the conference center and it was fun standing on that huge stage... :-) And of course I got completely confused during the talk while switching between the demo application and a slide showing a screenshot of that demo app - picking up every possible embarrassment... ;-)
The talk were in the main hall of the conference center and it was fun standing on that huge stage... :-) And of course I got completely confused during the talk while switching between the demo application and a slide showing a screenshot of that demo app - picking up every possible embarrassment... ;-)
Sunday, May 03, 2009
Equinox Aspects 1.0 M7a available for download
Because of a stupid bug in the caching area I put a fixed build of the milestone online. So if you tried M7 and observed performance problems with the caching, you should try this fixed milestone build instead from the Equinox Aspects download area.
Friday, May 01, 2009
Equinox Aspects 1.0 M7 available for download
The seventh milestone of Equinox Aspects is available for download from the Equinox Aspects download page. This milestone contains quite a large improvement for controlling the weaving of bundles. More details can be found in this comment on bug 255682. Take also a look at the New & Noteworthy list for 1.0M7 on the web to find out more.
Sunday, April 26, 2009
Load-Time Weaving for Spring-DM
Load-time weaving in an OSGi environment is different than in single-classpath-settings like you often have in Java. There you typically use a JVM agent or a specialized classloader that gets ClassFileTransformer components injected from your application. Those ClassFileTransformer components then to the real job of modifying bytecode at load-time. This is also used in the Spring framework to enable aspect weaving or JPA bytecode enhancements.
This gets different when you are working in an OSGi environment. Within OSGi you no longer have a single classpath application, you cannot (or at least should not) create specialized classloaders for yourself to do the magic, maybe the weaving should happen specifically for each bundle or the woven code gets additional dependencies woven into it. Using Spring in an OSGi environment doesn't make things easier. You can use Spring Dynamic Modules to implement really cool OSGi applications, but your Spring load-time weaving support remains broken to some degree (see all the related questions in the Spring-DM forum).
I often thought about using Equinox Aspects to solve these problems. Since Equinox Aspects is not tightly bound to AspectJ weaving only, you could re-use the base infrastructure to hook any kind of bytecode modifier into the Equinox runtime - and reuse the caching of Equinox Aspects at the same time.
Now I have a first sketch implemented that bridges between Spring-LTW and Equinox Aspects. The EquinoxAspectsLoadTimeWeaver class implements the LoadTimeWeaver interface of Spring and can therefore be used in your spring context as the load-time weaver component:
If you define this load-time weaver your bundle need to define an Import-Package on "org.eclipse.equinox.weaving.springweaver", of course.
To use this kind of load-time weaver definition to need to add "org.eclipse.equinox.weaving.hook" (from Equinox Aspects) to your target platform as well as "org.eclipse.equinox.weaving.springweaver":
When you launch your OSGi runtime you need to set the system property: (osgi.framework.extensions=org.eclipse.equinox.weaving.hook) and start the springweaver bundle right at startup. You can do this by adding it to the config.ini file (org.eclipse.equinox.weaving.springweaver@4:start). This is basically the same when using Equinox Aspects, except that you no longer start org.eclipse.equinox.weaving.aspectj but instead the springweaver bundle.
There are still some issues that need to be solved (see this comment in the spring forum for details), but I hope to can try it out and tell me what works fine and what needs some more work.
Feedback always welcome! Enjoy!
This gets different when you are working in an OSGi environment. Within OSGi you no longer have a single classpath application, you cannot (or at least should not) create specialized classloaders for yourself to do the magic, maybe the weaving should happen specifically for each bundle or the woven code gets additional dependencies woven into it. Using Spring in an OSGi environment doesn't make things easier. You can use Spring Dynamic Modules to implement really cool OSGi applications, but your Spring load-time weaving support remains broken to some degree (see all the related questions in the Spring-DM forum).
I often thought about using Equinox Aspects to solve these problems. Since Equinox Aspects is not tightly bound to AspectJ weaving only, you could re-use the base infrastructure to hook any kind of bytecode modifier into the Equinox runtime - and reuse the caching of Equinox Aspects at the same time.
Now I have a first sketch implemented that bridges between Spring-LTW and Equinox Aspects. The EquinoxAspectsLoadTimeWeaver class implements the LoadTimeWeaver interface of Spring and can therefore be used in your spring context as the load-time weaver component:
<context:spring-configured>
<context:annotation-config>
<context:load-time-weaver
class="org.eclipse.equinox.weaving.springweaver.EquinoxAspectsLoadTimeWeaver"/>
If you define this load-time weaver your bundle need to define an Import-Package on "org.eclipse.equinox.weaving.springweaver", of course.
To use this kind of load-time weaver definition to need to add "org.eclipse.equinox.weaving.hook" (from Equinox Aspects) to your target platform as well as "org.eclipse.equinox.weaving.springweaver":
When you launch your OSGi runtime you need to set the system property: (osgi.framework.extensions=org.eclipse.equinox.weaving.hook) and start the springweaver bundle right at startup. You can do this by adding it to the config.ini file (org.eclipse.equinox.weaving.springweaver@4:start). This is basically the same when using Equinox Aspects, except that you no longer start org.eclipse.equinox.weaving.aspectj but instead the springweaver bundle.
There are still some issues that need to be solved (see this comment in the spring forum for details), but I hope to can try it out and tell me what works fine and what needs some more work.
Feedback always welcome! Enjoy!
Friday, April 24, 2009
JAX 2009: Lessons Learned from 5 Years of Building Enterprise OSGi Applications
Yesterday I gave a talk at JAX 2009 about my experiences from using OSGi for enterprise application development over the past 5 years. I tried to sum up my experiences and most of all the mistakes I made during the past years using OSGi. If you are interested, take a look at the slides:
Enjoy - and try to not make the same mistakes than I... ;-)
Enjoy - and try to not make the same mistakes than I... ;-)
Wednesday, April 22, 2009
JAX 2009: What's Possible for Web-Apps and OSGi
Today I gave a presentation together with Gerd Wütherich and Peter Roßbach about the difficulties and options you have if you want to adopt OSGi for building web applications. The room was pretty crowded (more than 220 people) and I enjoyed the talk a lot. If you would like to take a look at the slides, you can find them here (unfortunately in German):
Enjoy!
Enjoy!
Tuesday, April 21, 2009
JAX 2009: What's New in Equinox Aspects
Today I gave an updated version of my EclipseCon short talk on What's New In Equinox Aspects at the Eclipse Forum Europe 2009, here in Mainz. Here are the slides:
Enjoy!
Enjoy!
Thursday, April 16, 2009
Next version of Scala IDE for Eclipse uses Equinox Aspects
Today Miles Sabin posted details on the upcoming 2.7.4 release of the Scala IDE for Eclipse. I am pretty excited about the fact that it uses Equinox Aspects to implement deeper integration with JDT. It uses the same aspect bundle as AJDT called JDT weaving. Andrew Eisenberg gave a great talk on JDT weaving at EclipseCon 2009. Take a look at the slides if you would like to read more about JDT weaving using Equinox Aspects.
Wednesday, March 25, 2009
EclipseCon 2009: OSGi for Eclipse Developers
It was fun giving the talk on "OSGi for Eclipse Developers" at EclipseCon 2009 together with Chris Aniszczyk and Bernd Kolb. At the end we had plenty of time for some interesting questions. Luckily we had BJ Hargrave and Peter Kriens sitting in the first row to answer the really hard ones... :-)
Here are the slides of the talk:
Here are the slides of the talk:
Subscribe to:
Posts (Atom)
