As of Roo 1.1.0, addons are created with the addon command. This is slightly different than previous versions, where addons were created with a template argument to the project command. If you find documentation referencing this old style, it’s probably out of date.
The first thing you need to do, is checkout the Roo source code. The Git
repository is located at
are very good instructions explaining how to build Roo in the readme.txt
file at the root of the source tree. Once Roo is built, you’ll need to
create a new directory and fire up the Roo shell.
mkdir roo-addon-example cd roo-addon-example roo-dev
____ ____ ____ / __ \/ __ \/ __ \ / /_/ / / / / / / / / _, _/ /_/ / /_/ / /_/ |_|\____/\____/ 1.1.1.RELEASE [rev 3057660] roo>
With the shell running, you can create either a simple, advanced or i18n addon.
roo> addon create addon create advanced addon create i18n addon create simple
addon create simple --topLevelPackage com.example.roo.addon.example
Created /Users/marc/src/roo-addon-example/pom.xml Created /Users/marc/src/roo-addon-example/readme.txt Created /Users/marc/src/roo-addon-example/legal Created /Users/marc/src/roo-addon-example/legal/LICENSE.TXT Created SRC_MAIN_JAVA Created SRC_MAIN_RESOURCES Created SRC_TEST_JAVA Created SRC_TEST_RESOURCES Created SRC_MAIN_WEBAPP Created SRC_MAIN_RESOURCES/META-INF/spring Created SRC_MAIN_JAVA/com/example/roo/addon/example Created SRC_MAIN_JAVA/com/example/roo/addon/example/ExampleCommands.java Created SRC_MAIN_JAVA/com/example/roo/addon/example/ExampleOperations.java Created SRC_MAIN_JAVA/com/example/roo/addon/example/ExampleOperationsImpl.java Created SRC_MAIN_JAVA/com/example/roo/addon/example/ExamplePropertyName.java Created ROOT/src/main/assembly Created ROOT/src/main/assembly/assembly.xml Created SRC_MAIN_RESOURCES/com/example/roo/addon/example Created SRC_MAIN_RESOURCES/com/example/roo/addon/example/info.tagx Created SRC_MAIN_RESOURCES/com/example/roo/addon/example/show.tagx
After the addon is created, exit the roo shell, then build and install
the addon. You can package the addon from within Roo with
package, but you’ll see why we installed it shortly.
quit mvn clean install
Having installed the addon, you’re almost ready to use it. There are a
few ways to load your addon into the Roo runtime. The one I like the
best is to set up your local maven repository as an OSGI Bundle
Repository (OBR). The project created with the
addon create command is
configured to use the Maven Bundle Plugin,
which will create a
repository.xml file in your local Maven
repository. To tell Roo to use your local Maven repository as an OBR,
simply add a line to the
config.properties file as shown below, where
ROO_HOME is the Roo source directory.
// $ROO_HOME/bootstrap/src/main/conf/config.properties obr.repository.url=file:/home/whoever/.m2/repository/repository.xml
If you’ve recently built Roo from source, you may want to null out the
repository.xml file before building your addon, as it will be full of
the core Roo addons. Keep in mind that you can use
to clean your working directory if you want to pull down the latest
development changes later on. Now that Roo knows where to look for your
addon, you can start the shell back up.
If you set everything up right, your local Maven repository should now show up as an OBR, and the addon you just installed should be available within it.
roo> osgi obr url list file:/home/whoever/.m2/repository/repository.xml roo> osgi obr list com-example-roo-addon-example [com.example.roo.addon.example] (0.1.0.BUILD-SNAPSHOT)
The main advantage of this approach is that you don’t have to type the path to addons when starting them. Roo will tab-complete the addon bundle name, so you should only have to type enough to make it unique.
roo> osgi obr start --bundleSymbolicName com.example.roo.addon.example [Thread-2] [com.example.roo.addon.example ] BundleEvent INSTALLED [Thread-2] [com.example.roo.addon.example ] BundleEvent RESOLVED [Thread-2] [com.example.roo.addon.example ] BundleEvent STARTED roo> Target resource(s): ------------------- com-example-roo-addon-example (0.1.0.BUILD-SNAPSHOT) Deploying...done. [Thread-2] [com.example.roo.addon.example ] ServiceEvent REGISTERED
Your addon should now show up in the output of
roo> osgi ps ... [ 75] [Active ] [ 1] com-example-roo-addon-example (0.1.0.BUILD-SNAPSHOT) roo> say hello --name marc Welcome marc! Country of origin: None of your business! It seems you are a running JDK 1.6.0_22 You can use the default JDK logger anywhere in your add-on to send messages to the Roo shell
You can make changes to your addon and reload it without restarting the
Roo shell. To change the command output for the example addon, you can
ExampleCommands.java file, change the
then reinstall the addon.
mvn clean install
roo> osgi uninstall --bundleSymbolicName com.example.roo.addon.example [Thread-2] [com.example.roo.addon.example ] ServiceEvent UNREGISTERING [Thread-2] [com.example.roo.addon.example ] BundleEvent STOPPED [Thread-2] [com.example.roo.addon.example ] BundleEvent UNRESOLVED [Thread-2] [com.example.roo.addon.example ] BundleEvent UNINSTALLED [Thread-2] [org.apache.felix.framework ] FrameworkEvent PACKAGES REFRESHED roo> osgi obr start --bundleSymbolicName com.example.roo.addon.example [Thread-2] [com.example.roo.addon.example ] BundleEvent INSTALLED [Thread-2] [com.example.roo.addon.example ] BundleEvent RESOLVED Target resource(s): ------------------- com-example-roo-addon-example (0.1.0.BUILD-SNAPSHOT) Deploying...done. [Thread-2] [com.example.roo.addon.example ] ServiceEvent REGISTERED [Thread-2] [com.example.roo.addon.example ] BundleEvent STARTED [Thread-2] [com.example.roo.addon.example ] ServiceEvent REGISTERED roo> say hello --name marc This is my new message
One downside to the OBR approach, is that you can’t just use the
update command to reload your addon. I think this is a bug, as it works
fine if you load the addon from an explicit file system path via
start --url. Until that gets fixed, you need to uninstall and start the
addon to reload it as was shown above.
If you need to debug Roo or your own addon, you can uncomment the DEBUG line towards the end of the roo-dev script. Roo will suspend on startup until you connect to it as a remote application with your IDE of choice.
That’s all you need to know to get started. The
Spring Roo Forum
is a good place to go if you need additional information.
in particular has some useful direction. You can also build the project
documentation locally with
mvn site, but be prepared to wait a while.
The documentation will be at
It’s still in progress, but the content that’s there is good.