config.ini setup for headless eclipse

Question

From this post, I have this error message when I tried to execute headless eclipse code.

java.lang.RuntimeException: Could not find framework
    at org.eclipse.equinox.launcher.Main.getBootPath(Main.java:978)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:557)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1386)

I googled to find this as an answer to issue: "Unable to acquire application service" error while launching Eclipse

However, I'm not exactly sure how to put the config.ini and how to put the correct content to remove the error message.

This is my directory structure, and I have Dosgi.bundles=org.eclipse.equinox.common@2:start,org.eclipse.update.configurator@3:start,org.eclipse.core.runtime@ inside the eclipse.ini file.

How do I setup the eclipse.ini file, and where the file should be located?

The jar files are in plugins directory, and runme.sh has this script:

R2_HOME=.
LIBS=plugins
JARS=.:\
$LIBS/org.eclipse.core.contenttype_3.4.100.v20110423-0524.jar:\
$LIBS/org.eclipse.core.jobs_3.5.100.v20110404.jar:\
$LIBS/org.eclipse.core.runtime_3.7.0.v20110110.jar:\
$LIBS/org.eclipse.core.runtime.compatibility.auth_3.2.200.v20110110.jar:\
$LIBS/org.eclipse.equinox.common_3.6.0.v20110523.jar:\
$LIBS/org.eclipse.equinox.app_1.3.100.v20110321.jar:\
$LIBS/org.eclipse.equinox.launcher_1.2.0.v20110502.jar:\
$LIBS/org.eclipse.equinox.preferences_3.4.1.R37x_v20110725.jar:\
$LIBS/org.eclipse.core.variables_3.2.500.v20110928-1503.jar:\
$LIBS/org.eclipse.osgi.services_3.3.0.v20110513.jar:\
$LIBS/org.eclipse.osgi.util_3.2.200.v20110110:\
$LIBS/org.eclipse.osgi_3.7.2.v20120110-1415

java -cp $JARS org.eclipse.core.launcher.Main -application headlessHello2_1.0.0.201210101509.jar

ADDED

Based on Paul's answer, I copied the config.ini file to the directory where the plugin is exported.

I also modified the script to make the -application points to the correct id.

R2_HOME=.
LIBS=plugins
JARS=.:\
$LIBS/org.eclipse.core.contenttype_3.4.100.v20110423-0524.jar:\
...
$LIBS/org.eclipse.osgi_3.7.2.v20120110-1415:\
headlessHello2_1.0.0.201210101509.jar

java -cp $JARS org.eclipse.core.launcher.Main -application headlessHello2.id2

Running this script gives me some more files in configuration directory, but I still have another error message.

org.osgi.framework.BundleException: The activator headlesshello2.Activator for bundle headlessHello2 is invalid
    at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:171)
    at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:679)
    at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
    at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:299)

What might be wrong?

Answer 1

Exporting a product (even a plugin-based product) works much better for providing what you need to get a running RCP application.

But if you've already created a launch config for your headless app, you can find out exactly what bundles you need and potentially what an config.ini file looks like by looking in <workspace>/.metadata/.plugins/org.eclipse.pde.core/<launch-config.name>. There should be a config.ini that PDE generated to launch your headless app.

I'd still recommend creating a .product file for your application and exporting that, unless you have a reason not to.