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From "Herko ter Horst (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FELIX-4029) Improve use of BundleContext.getServiceReferences() API in ServiceTracker
Date Mon, 22 Apr 2013 14:59:17 GMT
Herko ter Horst created FELIX-4029:
--------------------------------------

             Summary: Improve use of BundleContext.getServiceReferences() API in ServiceTracker
                 Key: FELIX-4029
                 URL: https://issues.apache.org/jira/browse/FELIX-4029
             Project: Felix
          Issue Type: Improvement
          Components: Dependency Manager
    Affects Versions: dependencymanager-3.1.0
            Reporter: Herko ter Horst


The org.apache.felix.dm.tracker.ServiceTracker implementation currently does not take full
advantage of the BundleContext.getServiceReferences() API when retrieving initial service
references on "open".

The getServiceReferences() method accepts a class name and a filter. The ServiceTracker accepts
either one (but not both). However, it transforms the class name into a filter and calls getServiceReferences()
with only the filter.

This prevents BundleContext implementations from taking advantage of the class name parameter.
At least one implementation (Equinox) indexes service references by their service interface.
The fact that the class name is not available leads to reduced performance in this case.

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