Using Policy Files

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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:

<update-policy>
  <url-map pattern="com.aptana.ide.feature" url="http://hostname/update/nightly/site.xml"/>
</update-policy>

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 com.aptana.ide.*

Using the Policy File

  1. 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.