com.liferay.osgi.service.tracker.collections.internal.ServiceTrackerUtil Maven / Gradle / Ivy
/**
* Copyright (c) 2000-present Liferay, Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*/
package com.liferay.osgi.service.tracker.collections.internal;
import org.osgi.framework.BundleContext;
import org.osgi.framework.Filter;
import org.osgi.framework.InvalidSyntaxException;
import org.osgi.util.tracker.ServiceTracker;
import org.osgi.util.tracker.ServiceTrackerCustomizer;
/**
* @author Carlos Sierra Andrés
*/
public class ServiceTrackerUtil {
public static ServiceTracker createServiceTracker(
BundleContext bundleContext, Class clazz, String filterString,
ServiceTrackerCustomizer serviceTrackerCustomizer) {
if (filterString != null) {
if (clazz != null) {
filterString =
"(&" + filterString + "(objectClass=" + clazz.getName() +
"))";
}
try {
Filter filter = bundleContext.createFilter(filterString);
return new ServiceTracker<>(
bundleContext, filter, serviceTrackerCustomizer);
}
catch (InvalidSyntaxException ise) {
throwException(ise);
return null;
}
}
if (clazz != null) {
return new ServiceTracker<>(
bundleContext, clazz, serviceTrackerCustomizer);
}
throw new IllegalArgumentException(
"Filter string and class are both null");
}
public static T throwException(Throwable throwable) {
return ServiceTrackerUtil._throwException(
throwable);
}
private static T _throwException(
Throwable throwable)
throws E {
throw (E)throwable;
}
}