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Using Policy Files

Revision as of 21:41, 5 March 2007 by (Talk | contribs) (add category tags)

Policy files allow a user to configure which version of a feature to update to when checking for updates.

Creating the Policy File

A sample policy file is shown below:

  <url-map pattern="" url="http://hostname/update/nightly/site.xml"/>

In this example, we save this to an XML file named "policy.xml". This is then placed next to the corresponding update site.xml. This effectively says "when I see feature with id x, instead go to update site y rather than the default". You can also use wildcards, such as* if you have multiple features with the same prefix.

Using the Policy File

  1. In Eclipse, navigate to Window > Preferences > Install/Update, and paste in the URL to the policy file (such as http://hostname/update/nightly/policy.xml).
  2. Select "OK"
  3. The next time you search for updates, it should use the new URL specified in the policy file.

An additional thought is to provide a preference page to allow the end user to choose which "release stream" they wish to subscribe to. In this case, there is a radio button that might specify "stable", "rc" and "nightly". Selecting one of these radio buttons would automatically set the policy file behind the scenes.

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