How to install the GlassFish 3 server adapter with Eclipse Helios 3.6

I get the following when I try this:

Cannot complete the install because one or more required items could not be found. Software being installed: GlassFish Java EE 5, Java EE 6 1.0.54 (com.sun.enterprise.jst.server.sunappsrv.feature.feature.group 1.0.54) Missing requirement: GlassFish Java EE 5, Java EE 6 1.0.54 (com.sun.enterprise.jst.server.sunappsrv.feature.feature.group 1.0.54) requires 'org.eclipse.platform.feature.group [3.5.0,3.6.0)' but it could not be found

Eclipse Helios 3.6 M6

With the Eclipse 3.6 M6 Java EE bundle, if you try to install the GlassFish v3 server adapter via the New Server dialog and then click on the Download Additional server adapters, Eclipse contacts remote sites but fail at showing any adapter:

This issue is actually captured by Bug 305636. Using the Update Site instead of the New Server Wizard allows to workaround the issue:

1. Install a new Eclipse Helios M6 (get the Eclipse IDE for Java EE Developers package).
2. Install the latest GlassFish server adapter, today that is 1.0.52:
   1. Open Help > Install New Software
   2. Add the GlassFish update site URL: https://ajax.dev.java.net/eclipse
   3. Install the GlassFish Java EE 5, Java EE 6 plugin
   4. Restart when prompted
3. Open the New > Server wizard and add your GlassFish v3 Java EE 6 server.

Eclipse Helios 3.6

At the time of writing this (07/26/2010), there are in theory two ways to install the GlassFish Server adapter: via the Eclipse Marketplace or via an update site.

Update: As mentioned by Thorbjørn in a comment, the adapter is now (09/24/2010) available in the Additional server adapters dialogue (the "normal way").

New Server

There are several ways to do this but one ways is to right-click in the Server view, select New > Server then click the Download additional server adapters link and select the GlassFish adapter.

Marketplace

Go to Help > Eclipse Marketplace... and search for "glassfish". Then click on the Install button of the GlassFish Java EE Application Server Plugin for Eclipse and follow the steps.

Update site

Go to Help → Install New Software, Add the following temporary¹ update site: http://download.java.net/glassfish/eclipse/helios. Be sure to uncheck Group items by category and you should see the Oracle GlassFish Server Tools as shown below:

Click on Next and follow the steps.

¹ The GlassFish plugin is being moved to the Oracle Enterprise Pack for Eclipse (OEPE) and will be available at http://download.oracle.com/otn_software/oepe/helios/wtp in the future (see Bug 312912).

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The problem mentioned above is actually not specific to the GlassFish plugin and is not platform specific. The issue is a p2 bug in Eclipse 3.6 when using a shared install (which is the root cause of the problem) as I discovered after reading this other question on SO and the Bug 322929. The problem is related to a p2 bug which is fixed in Eclipse 3.6 SR1 and after installing Eclipse 3.6 SR1 RC4, things are now indeed working as expected. Yeah!