OsgiServiceReferenceUtils.java 文件源码

/**
 * Returns a reference to the <em>best matching</em> service for the given classes and OSGi filter.
 * 
 * @param bundleContext OSGi bundle context
 * @param classes array of fully qualified class names
 * @param filter valid OSGi filter (can be <code>null</code>)
 * @return reference to the <em>best matching</em> service
 */
public static ServiceReference getServiceReference(BundleContext bundleContext, String[] classes, String filter) {
    // use #getServiceReference(BundleContext, String, String) method to
    // speed the service lookup process by
    // giving one class as a hint to the OSGi implementation

    String clazz = (ObjectUtils.isEmpty(classes) ? null : classes[0]);

    return getServiceReference(bundleContext, clazz, OsgiFilterUtils.unifyFilter(classes, filter));
}