A: Step 1

Start Eclipse, go to the “SVN Repository Exploring” perspective and add the following SVN repository: https://dev.nightlabs.org/svn/public/cumulus4j/

A: Step 2

Check-out all projects starting on “org.cumulus4j.”.

A: Step 3 (optional)

Open a console (aka shell), go to the directory $workspace/org.cumulus4j.aggregator/ and run one of the following commands:

• MAVEN_OPTS='-Xmx256M -XX:MaxPermSize=128M -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabled' mvn clean install
• MAVEN_OPTS='-Xmx256M -XX:MaxPermSize=128M -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabled' mvn clean install -Dmaven.test.skip=true

The 2nd command skips all tests, which is faster.

Maven will automatically download all dependencies (e.g. the DataNucleus nightly builds).

Alternatively, you can run Maven within your Eclipse IDE via a right-click on the project “org.cumulus4j.aggregator” and choosing "Run as..." => "Maven install" or "Maven build...".

A: Step 4

In the Project Explorer, select all projects starting on “org.cumulus4j.”, right-click and execute "Maven" => "Enable dependency management".

A: Step 5

In your Eclipse IDE, go to "Window" => "Preferences..." => "Plug-in Development" => "Target Platform" and check (enable) the "DataNucleus" target definition. Click "OK".

B: Step 1

Follow the DataNucleus.org => Development => Building with Eclipse howto.

B: Step 2

Go to the "SVN Repository Exploring" perspective and add the following SVN repository: https://dev.nightlabs.org/svn/public/cumulus4j/

B: Step 3

Check-out all projects starting on "org.cumulus4j.".

B: Step 4 (optional)

Run the Maven build as described in "A: Step 3" above.

B: Step 5

In the Project Explorer, select all projects starting on “org.cumulus4j.”, right-click and execute "Maven" => "Enable dependency management".

Projects have error markers

If your projects are not yet compiling correctly and red error markers are shown, select all projects, right-click them and "Refresh" them. Afterwards go to the main menu "Project" => "Clean..." and clean all projects.

If you still have error markers, you could additionally try "Maven" => "Update project configuration" or "Maven" => "Update dependencies".

In some rare cases, you might even need to close and re-open all projects or restart Eclipse.

Only "Generic" available in the Eclipse extension editor

You opened your plugin.xml or MANIFEST.MF and selected the "Extensions" tab. When you right-click, the context-menu shows "New" => "Generic" instead of e.g. "New" => "store-manager" or "New" => "query". That means, your target platform misses the extension-point's schema files. If you used option "A", check in "Window" => "Preferences" => "Plug-in development" => "Target platform" via "Edit..." on the "DataNucleus" target platform, whether there is "0 plug-ins available" displayed anywhere. If so, you likely have to fix the version number.