Changes:
Link to project page: http://code.google.com/p/hunspell4eclipse/
Eclipse has a built in spell checker. It’s based on word list files. It is just fine for languages that does not use pre- and postfixes extensively. But for languages like Hungarian, it is a no go. – I’ve tried to generate a word list of Hungarian words, but when I noticed that the word list reached 35 GB (not a typo!) I’ve canceled the process. – Just imagine Eclipse loading 35+ GB of dictionary…
In my search for a spell checker for Eclipse I found eSpell, but eSpell is also a word list based engine, so that is a no go too. I left with no choice but to create one. So here it is:
Immature. In beta stage. Lot to do. But it works…
I’m planning to provide content sensitive checking for Java and XML. Actually my plan is to create extension points for that purpose, to provide possibility for others to contribute too.
I hope you’ll enjoy the plug-in and that you found it worthy to comment.
You’re building a web application with some nice interface. You use JQuery and a bunch of Javascript libraries on top of it. So you download those applications and place them into your deployable package and reference them from your application.
But why do we wrestle with resources of (OSS) libraries? Downloading new versions, copying the resources to our application and deploying it again and again for each and every application.
I think W3C get that right. For example with XML Schemas: Usually XML Schema files (XSD) should be placed on some accessible URL on the Internet (or Intranet). So when you define your XML with schema definition you provide an URL which points to a resource on the Internet. Each application using the XML can fetch the Schema file and use it. Those URLs are fix URLs, does not change over time. So why don’t we do the same with Javascript files, images, etc.?
For example those popular FAMFAMFAM icons could be accessible one-by-one. Or just think of most popular JavaScript libraries like JQuery, Prototype, YUI, script.aculo.us, – you name it, – all could be accessible on a well defined URL. In that case we could access them whit a simple URL. Set up would be easy as pie…
We could provide a central repository for these resources. Something similar to Maven Repository but for other resources. It would be enough to have a unique name (as an Id).
For example I would put JQuery to a next path:
http://ossresources.org/jquery/jquery.js
Of course we need versions too. Or we could end up with non-working websites or applications from time-to-time.
My proposition would be, to extend the path from above to (kind of Maven way):
http://ossresources.org/jquery/1.3.2/jquery-1.3.2.js
Of course we could have Meta-versions too, like latest, snapshot, etc..
There are some problems with the setup from above. Lets see…
In corporate environment sometimes there are no access to the Internet, or the there are prussic proxy rules. In that case there is no access to the resources from above. – There is a same problem with XML Schemas too.
The only solution to this, is to set up a corporate repository that would proxy the resources to the Intranet. – Similar to Maven Repositories, like Artifactory or Nexus.
Okay. I’m not a lawyer but I think this is actually the bigger problem. We should find a way to distribute licences with resources too. We might put licences beside the resources, or provide a link for each resource. I just don’t know, I hope there are some folks that know the answer, and we could create a real repository…
I think this was the intention of the inventors of the web, but as usually something went wrong…
As you might know we use Maven extensively. We have a corporate Maven Repository served by JFrog’s Artifactory. We have more than 30000 artifacts in our repository, – about 35GB of backup.
We try to keep up-to-date with new Artifactory releases. Unfortunately some times upgrade is not that smooth, so we need a backup and a drop-in service in case of failure.
As most of our artifacts are just old releases, we decided to create a secondary service, which acts as a drop-in service in case Artifactory is down. The idea is simple, just create a repo1.maven.org like service, with simple HTTP. Each time upgrade is to take place, copy all the new data to that repository and switch the service to point to it. – This works in case of failure too, just copy the backup to a simple “repository”.
To create the simple repository we took our Artifactory backup, removed the Artifactory specific meta-data and copied to a directory and configured an Apache HTTPD to serve it. Unfortunately the Artifactory backup contains no maven-metadat.xml, which plays key role in resolving versions. I was sure there is a maven-metadata.xml generator somewhere on the Net. But there were none! We needed it badly, so I created one. It is a simple Perl script that runs under Linux (uses shell commands extensively). It takes care of releases, but ignores SNAPSHOTs. Afterwards I realized that we need to produce md5 and sha1 checksums to, so I’ve created another script.
I thought it would be nice to share the scripts, so I’ve created a project on Google Code under maven-scripts name.
To create maven-metadata.xml:
You will see 2 lines for each maven-metadata.xml generated: one for the metadata, the other for sha1.
If you need md5 and sha1 sums for POMs and JARs:
(Well, this could be Bash script too…)
Script could be downloaded at download page.
Please report any problem, bug, issue at projects issues page.
If you have a lots of artifacts as we have, you could lift the weight a bit from your Maven Repository creating a repository as described above and setting it as a mirrored repository.
We do that, and now:
After my last article some folks at the company I work for asked for a Apache Commons Logging version of templates, so here it is.
Just as with the last article, import this templates: clogger-templates
The mappings are (in case you would like to use with SLF4J):
| clogger | create a logger instance with imports |
| cloginfo | create log entry of info level |
| clogerror | create log entry of error level |
| clogwarn | create log entry of warn level |
| clogtrace | create log entry of trace level |
| clogdebug | create log entry of debug level |
| clogfatal | create log entry of fatal level |
Have fun.
I’m sure lot of Eclipse developers are happy with Log4E, but for those who does not have Log4E or do not like to “pollute” Eclipse with plugins, I wrote few templates for SLF4J logging.
Just open Preferences and navigate to Java>Editor>Templates
Eclipse Preferences
…and press Import… button. And import: slf4j-eclipe-templates (download this file first)
Hit OK. Read more…
Occasionally I use bittorent, and I really liked Azureus (or Vuze). But they switched attitude.
Azureus: A nice application, with lot a features. Built on Eclipse platform, – a model of how great is Eclipse RCP. I’ve been using it since about version 3.x, – about 2 yrs or more. It was one of my first torrent client. But things change. Licensing changed, interface changed, and now you could occasionally get an annoying pop-up calling for donation, – check Wikipedia on Vuze for details. I dislike this kind of attitude, and I started to search for a new client.
Under Ubuntu Transmssion would be a natural choice. But Transmission had a slow bootup, and freezed from time to time for a half minute or more. Then I decided to search for other free, featureful torrent client. I check wikipedia as usually, and after few hours of evaluations, I choose my new bittorent client: Deluge.
Deluge is really nice. Fancy, easy to use interface, with all the stuff I need: It has uPnP support, so no router hacking, has support for moving finished stuff to a new location, etc.. If you are also disappointed with Vuze consider Deluge!
There is only one thing I’m missing: the search. – Vuze/Azureus get that rigth, in my oppinion.
To be honest, I was hopping that Vuze will provide service-on-demand, pay-per-view (download), but that did not happened.
I was searching for a way to use Jackrabbit with Spring. There are articles about this topic, but each of them suggests using spring-modules. Now, my problem with spring-modules jcr implementation is, that they depend on non-released or obsolete 3rd party JARs, like apravez.* and jeceira. Just take a look at the pom file, and you’ll see.
On the other hand I do not feel a need for jcrTemplate, jcrCallback or any other ORM flavor helpers. I just need a nice, easy integration of Jackrabbit, where I can easily inject JCR Session into any class with spring.
The JNDI way would do, but I do not want to use JNDI, I want to configure Jackrabbit from my spring beans.
Now with those premises, I came out with a quite easy setup, that follows below.
Spring configuration:
The configuration of Jackrabbit is defined in repository.xml file, – I just took the default repository.xml, the one that is created when running TransientReposiotry for the first time. Of course for better integration and configuration define your own.
There is one more configuration point and that could be seen in the XML from above. Spring bean jcrConfiguration defines where the repository.xml configuration is and the path to repository resources, – the second argument. For test purpose I just used /tmp/repository but for production you might set it to something like: repository
Do not forget to set up spring RequestContextListener or you’ll be missing session (and request) scope in spring configurations. In web.xml just define a listener:
org.springframework.web.context.request.RequestContextListener
From code we’ll just going to use the jcrSession. Here is a small example for usage:
@Service
public class TopicService implements BeanFactoryAware {
private BeanFactory beanFactory;
public Session getJcrSession() {
Session jcrSession =
(Session) beanFactory.getBean("jcrSession");
return jcrSession;
}
@Override
public void setBeanFactory(BeanFactory beanFactory)
throws BeansException
{
this.beanFactory = beanFactory;
}
public void myFucntion() {
Session session = getJcrSession();
// here you do what you would do with JCR...
}
}
As my service is singleton I inject Spring Bean Factory with the help of org.springframework.beans.factory.BeanFactoryAware mixin, so each time I call getJcrSession() I get a JCR session bind to HTTP session.
Well, that’s it. A simple configuration, easy usage.
Yesterday Ganymede arrieved. Fresh new Eclipse 3.4 and a tons of plugins as usually.
Some nice new features, feels like a bit faster. But! P2, the new “update system”… grrr. Okay, the old one was bad, I know. But it did work. It took me usually about 30 minutes to assemble an eclipse-jee with AJDT, subversive, q4e, mylyn exts and to import some of my workspaces. Today, with Ganymede and P2 it took me about 4 hours. Ouch. And I still do not have AJDT, and no dependency viewer from q4e.
I hope this will stabilize, and that this will pay off…
We have a strange animal: A web application with really lots of jars. (Today total of 273 JARs.)
We use Maven 2, Eclipse with WTP, Tomcat, Q4E, etc.., but from these technologies only Eclipse, WTP and Tomcat are relevant for the problem I’d like to describe. Most of developer machines runs Windows XP, and some Windows 2000, and just few Linux.
As we use Maven 2, the jars came form ${user.home}/.m2/repository/ folder. We just let Q4E set up the path for our projects inside Eclipse. For some reason we stack with Q4E 0.3.0, and we tweaked the WTP Server (Tomcat) launch settings, to have all JARs included. We did not used “served modules without publishing”, nor “J2EE Module Dependencies” for few (here) non-relevant reasons.
After adding few new modules (JARs) to the webapp, for few developers the Tomcat Server just failed to start. No log, and nothing in the debug view, nor in the error view. Eclipse WTP were just waiting for Tomcat to start… forever… We were bitterly searching for solution/bug. With no luck. After adding even more JARs, even more developers were complaining: the same problem.