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Heads up on Filters in p2 api [message #603385]

Fri, 12 March 2010 13:10

Thomas Hallgren

Messages: 3240
Registered: July 2009

Senior Member

The p2 API for IInstallableUnit.getFilter() and IRequirement.getFilter() has changed in the last milestone. I think this
has some impact on the aggregator code.

The new API returns an IMatchExpression that will be evaluated against a context IU. This IU holds the properties that
prior to this change was passed in a Dictionary when evaluating the OSGi filter. Here's some sample code that tests a
filter:

HashMap<String, String> env = new HashMap<String, String>();
env.put("osgi.os", "linux");
env.put("osgi.ws", "gtk");
env.put("osgi.arch", "x86");
IInstallableUnit envIU = InstallableUnit.contextIU(env);

if(requirement.getFilter().isMatch(envIU)) {
// The filter matches the environment
}

HTH,
- thomas

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