Getting Started Developing Jetspeed
Introduction
This section is for developers who want to work on Jetspeed 2 itself, not necessarily for portlet developers.
Setting up a development environment
There are many different ways to set up a development environment that will enable you to effectively develop Jetspeed 2. This example uses Eclipse, Tomcat 5, and MySQL.
Prerequisites
Download and install these packages:
Setting up Eclipse
- Dowload Eclipse from eclipse.org. Any Latest Release version from 3.0 onward will probably be OK. If you have problems with any of the plugins, make sure they support the version of Eclipse you downloaded.
2. Install Eclipse plugins:
At a minumum you will need to install the Mevenide and Checkstyle plugins. Mevenide is used for working with Mavenized projects. Checkstyle is a Java programming style enforcer.
The easiest way to install plugins is through the Eclipse Update Manager. Choose Help > Software Updates > Find and Install. In the next dialog, choose "Seach for new features to install" and then "Add Update Site".
Name: Mevenide
Update Manager URL: http://mevenide.codehaus.org/release/eclipse/update/site.xml
If you see a java.lang.NoSuch'*_MethodError error with Mevenide during launch, use the following URL for the Update Manager
http://mevenide.codehaus.org/update/3.0/site.xml
Unfortunately, installing the Checkstyle plugin is a manual process. Start by downloading the plugin from the Checkstyle plugin site. Next, unzip the download and copy the directory to your eclipse/plugins directory. Restart Eclipse if it's running.
You may also want to try Veloeclipse, a plugin for editing Velocity templates. It's available through the Eclipse Update Manager. Use the steps described above for Mevenide, but use the following values.
Name: Veloeclipse
Update Manager URL: http://propsorter.sourceforge.net/veloeclipse
Some developers also use XMLBuddy.
The Sysdeo Tomcat plugin is also handy for controlling Tomcat from Eclipse http://www.sysdeo.com/eclipse/tomcatPlugin.html. This is a manual install.
There are more Eclipse plugins available at http://www.eclipse-plugins.info/._*
Note on the Eclipse workspace:* If you are using Windows, set your Eclipse workspace (in the annoying window that opens up every time you launch Eclipse until you finally notice the checkbox) such that the directory path does not contain any spaces. You will have trouble building if the path to your workspace contains spaces._
Setting up Tomcat
Download and install Tomcat from http://jakarta.apache.org/tomcat/.
Tomcat 4 and 5 are both supported. Versions of Tomcat older than 5.0.28 require a JAASRealm patch that will be automatically applied by Maven during the build. Refer to http://issues.apache.org/jira/browse/JS2-55 for more information. Otherwise, Tomcat 4 or 5 are equally good choices.
Checking out Jetspeed
The first thing you need to do is add a CVS respository:*
Window* >* Open Perspective* >* CVS Repository Exploring*
Make sure the "CVS Repositories" tab is selected and right-click (Control-click on the Mac) that pane. Choose* New* >* Repository Location...* in the context menu. Alternatively, you can click the "Add CVS Repository" button to the right of the tabs.
Enter the following information in the Add CVS Repository dialog:
Host: cvs.apache.org
Repository path: /home/cvspublic
User: anoncvs
Leave Password empty.
The connection type is pserver, using the default port.
You can then drill down to the jakarta-jetspeed-2 module from HEAD.
Right-click (control-click on the Mac) on the jakarta-jetspeed-2 module and choose* Check Out As...* from the context menu.
Select "Check out as a project in the workspace" and click the Finish button.
Now switch from the CVS perspective to the Java perspective (Window >* Open Perspective*; you may need to choose* Other...* and select Java from the resulting dialog).
Presto! You have a checkout of jakarta-jetspeed-2. You'll probably get a ton of errors. Luckily they're all variations on the same theme: Unbound classpath variable: MAVEN_REPO/blah/blah/blah.
Before we go any further, make sure that the Maven settings are correct in Eclipse. Open the Eclipse Preferences dialog and select the* Maven* >* Locations*. In the author's experience on Mac OS X, it was neccessary to enter the Java Home path as a URL:
file:/System/Library/Frameworks/JavaVM.framework/Versions/1.4.2/Home
Maven Home will probably be something like:
/usr/local/maven-1.0
Maven Local Home:
/your/home/.maven
Maven Local Repository:
/your/home/.maven/repository
OK – now we're ready to fix those MAVEN_REPO errors. In the Preferences window, click* Java* >* Build Path* >* Classpath Variables*. Click the "New..." button and enter the following:
Name: MAVEN_REPO
Path: the path to your Maven Local Repositry, i.e. /your/home/.maven/repository
Click* OK* until you've saved your preferences and the Prefences window is closed.
The build errors should disappear. Right-click (control-click) the project name "jakarta-jetspeed-2" and choose* Maven* >* Run Maven..._' . In the text field to the left of the "Choose..." button, enter allClean allBuild and click "Run".
That's it, you're building Jetspeed! Any build problems from here on are left as an exercise to the reader. 